def write_output_files( sino_down , angles_down , args , pathin , filename ):
nang_down = sino_down.shape[0]
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
extension = filename[len(filename)-4:]
name_base = filename[:len(filename)-4] + '_'
fileout = name_base + 'ang'
if nang_down < 10:
string_nang = '000' + str( nang_down )
elif nang_down < 100:
string_nang = '00' + str( nang_down )
elif nang_down < 1000:
string_nang = '0' + str( nang_down )
else:
string_nang = str( nang_down )
fileout += string_nang + extension
io.writeImage( pathout + fileout , sino_down )
print('\nWritten downsampled sinogram:\n', pathout + fileout)
fileout = name_base + string_nang + '_angle_list.txt'
np.savetxt( pathout + fileout , angles_down , delimiter='\n' )
print('\nWritten corresponding list of angles:\n', pathout + fileout)
def write_reconstruction(reco, pathin, args):
## Get output directory
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if os.path.exists(pathout) is False:
print("\nOutput directory ", pathout, " does not exist ---> created!")
os.makedirs(pathout)
print("\n\nOutput directory:\n", pathout)
## Save output file
filename = args.sino
extension = filename[len(filename) - 4 :]
filename = filename[: len(filename) - 4]
if args.full_output is True:
filename += "_b" + str(args.base_size) + "_d" + str(args.down_size)
filename += "_" + args.filt
filename += "_fhbp_rec" + extension
filename = pathout + filename
io.writeImage(filename, reco)
def main():
print('\n')
print('##############################################')
print('##############################################')
print('#### ####')
print('#### DOWNSAMPLE SINOGRAM ####')
print('#### ####')
print('##############################################')
print('##############################################')
print('\n')
## Get input arguments
args = getArgs()
## Read input sinogram
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
filename = args.sino
sino = io.readImage( pathin + filename )
nang , npix = sino.shape
print('\nInput path:\n', pathin)
print('\nInput sinogram:\n', filename)
print('Sinogram size: ', nang,' ang X ', npix,' pixels')
## Get input sinogram
factor = int( args.factor )
print('\nDownsampling factor: ', factor)
## Downsample in pixels
sino_down = sino[:,::factor]
if args.plot is True:
sino_list = [ sino , sino_down ]
title_list = [ 'Original sinogram' , 'Undersampled sinogram' ]
dis.plot_multi( sino_list , title_list )
## Write image
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
fileout = filename[:len(filename)-4] + '_downsampl' + str( factor ) + '.DMP'
io.writeImage( pathout + fileout , sino_down )
print('\n')
def write_sinogram( sino , pathin , angles , args ):
nang = len( angles )
## Get output directory
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if os.path.exists( pathout ) is False:
print('\nOutput directory ', pathout,' does not exist ---> created!')
os.makedirs( pathout )
print('\n\nOutput directory:\n', pathout)
## Save output file
filename = args.image
extension = filename[len(filename)-4:]
filename = filename[:len(filename)-4]
nang = args.nang
if nang < 10:
str_nang = '000' + str( nang )
elif nang < 100:
str_nang = '00' + str( nang )
elif nang < 1000:
str_nang = '0' + str( nang )
else:
str_nang = str( nang )
filename += '_ang' + str_nang
if args.full_output is True:
filename += '_b' + str( args.base_size ) + '_d' + str( args.down_size )
filename += '_fhbp_sino' + extension
filename = pathout + filename
io.writeImage( filename , sino )
## Save list of projection angles
if args.list_ang is True:
listang = filename[:len(filename)-4]
listang += '_ang' + str( nang ) + '_list.txt'
print('\nWriting list of projection angles:\n', listang)
fd = open( listang , 'w' )
for i in range( len( angles ) ):
fd.write('%.8f\n' % angles[i] )
fd.close()
def save_sinogram( sinogram , angles , args ):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
if args.sino is None:
filename = args.image
extension = filename[len(filename)-4:]
filename = filename[:len(filename)-4]
nang = args.nang
if nang < 10:
str_nang = '000' + str( nang )
elif nang < 100:
str_nang = '00' + str( nang )
elif nang < 1000:
str_nang = '0' + str( nang )
else:
str_nang = str( nang )
if args.geometry != '1':
filename += '_ang' + str_nang + '_radon_' + args.interp + '_polar_sino'
else:
filename += '_ang' + str_nang + '_radon_' + args.interp + '_pseudo_sino'
filename = pathout + filename + extension
else:
filename = pathout + args.sino
io.writeImage( filename , sinogram )
if args.list_ang is True:
listang = filename[:len(filename)-4]
if args.geometry != '1':
listang += '_ang' + str( args.nang ) + '_list.txt'
else:
listang += '_ang' + str( args.nang ) + '_pseudopol_list.txt'
print('\nWriting list of projection angles:\n', listang)
fd = open( listang , 'w' )
for i in range( len( angles ) ):
fd.write('%.8f\n' % angles[i] )
fd.close()
def saveReco( reco , args ):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.reco is None:
filename = args.sino
filename = filename[:len(filename)-4]
filename += '_iradon_' + args.interp + '_rec.DMP'
filename = pathout + filename
else:
filename = pathout + args.reco
io.writeImage( filename , reco )
def saveReco(reco, args):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.reco is None:
filename = args.sino
filename = filename[:len(filename) - 4]
filename += '_iradon_' + args.interp + '_rec.DMP'
filename = pathout + filename
else:
filename = pathout + args.reco
io.writeImage(filename, reco)
def main():
x = io.readImage( sys.argv[1] )
M = int( sys.argv[2] )
dis.plot( x , 'Input image' )
N , p = x.shape
d = N;
angles = np.arange( M )/myfloat( M ) * 180.0
angles = np.fft.fftshift( angles )
A = paralleltomo( angles , N , p , d )
#dis.plot( A.todense() , 'Matrix A' )
sinogram = A.dot( x.reshape(-1) )
sinogram = sinogram.reshape( M , N )
dis.plot( sinogram , 'Output sinogram' )
io.writeImage( sys.argv[1][:len(sys.argv[1])-4] + 'sino_par_tomo.DMP' ,
sinogram )
def save_reco(reco, args):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.reco is None:
filename = args.sino
filename = filename[:len(filename) - 4]
filename += '_pyfbp' + '_reco.DMP'
filename = pathout + filename
else:
filename = pathout + args.reco
io.writeImage(filename, reco)
def save_sinogram(sinogram, angles, args):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if pathout[len(pathout) - 1] != '/':
pathout += '/'
if args.sino is None:
filename = args.image
extension = filename[len(filename) - 4:]
filename = filename[:len(filename) - 4]
nang = args.nang
if nang < 10:
str_nang = '000' + str(nang)
elif nang < 100:
str_nang = '00' + str(nang)
elif nang < 1000:
str_nang = '0' + str(nang)
else:
str_nang = str(nang)
if args.geometry != '1':
filename += '_ang' + str_nang + '_radon_' + args.interp + '_polar_sino'
else:
filename += '_ang' + str_nang + '_radon_' + args.interp + '_pseudo_sino'
filename = pathout + filename + extension
else:
filename = pathout + args.sino
io.writeImage(filename, sinogram)
if args.list_ang is True:
listang = filename[:len(filename) - 4]
if args.geometry != '1':
listang += '_ang' + str(args.nang) + '_list.txt'
else:
listang += '_ang' + str(args.nang) + '_pseudopol_list.txt'
print('\nWriting list of projection angles:\n', listang)
fd = open(listang, 'w')
for i in range(len(angles)):
fd.write('%.8f\n' % angles[i])
fd.close()
def save_reco(reco, args):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.reco is None:
filename = args.sino
filename = filename[:len(filename) - 4]
filename += '_ang' + str( args.nang ) + '_fbp_bspline' + \
str( args.bspline_degree ) + \
'_' + args.filt + '_rec.DMP'
filename = pathout + filename
else:
filename = pathout + args.reco
io.writeImage(filename, reco)
def saveReco( reco , args ):
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
if args.reco is None:
filename = args.sino
filename = filename[:len(filename)-4]
filename += '_rec_isart.DMP'
filename = pathout + filename
else:
filename = pathout + args.reco
io.writeImage( filename , reco )
def saveReco( reco , pathin , args ):
## Get output directory
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if os.path.exists( pathout ) is False:
print('\nOutput directory ', pathout,' does not exist ---> created!')
os.makedirs( pathout )
print('\nOutput directory:\n', pathout)
## Save output file
filename = args.sino
filename = filename[:len(filename)-4]
filename += '_est_rec.DMP'
filename = pathout + filename
io.writeImage( filename , reco )
def saveSino( sino , angles , args ):
## Save sinogram
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.sino is None:
filename = args.image
filename = filename[:len(filename)-4]
if args.nang < 10:
str_ang = '000' + str( args.nang )
elif args.nang < 100:
str_ang = '00' + str( args.nang )
elif args.nang < 1000:
str_ang = '0' + str( args.nang )
filename += '_ang' + str_ang + '_radon_kb_r' \
+ str( args.kb_radius ) + '_deg' \
+ str( args.kb_degree )
if args.geometry == '0':
filename += '_polar'
elif args.geometry == '1':
filename += '_pseudo'
else:
filename += '_text'
aux = filename
filename += '_sin.DMP'
filename = pathout + filename
else:
filename = pathout + args.sino
io.writeImage( filename , sino )
## Save list of projection angles
if args.listang is True:
fileang = aux + '_list_angles.txt'
np.savetxt( pathout + fileang , angles , fmt='%.10f', delimiter='\n' )
def main():
sino = io.readImage( sys.argv[1] )
ctr = np.float32( sys.argv[2] )
dis.plot( sino , 'Input sinogram' )
sino_new = proc.sino_correct_rot_axis( sino , ctr )
'''
nang , npix = sino.shape
sino_out = sino.copy()
x = np.arange( npix )
x_out = x - shift
for i in range( nang ):
s = InterpolatedUnivariateSpline( x , sino[i,:] )
sino_out[i,:] = s( x_out )
'''
dis.plot( sino_new , 'Output sinogram' )
filename = sys.argv[1][:len(sys.argv[1])-4] + '_interp.DMP'
io.writeImage( filename , sino_new )
def main():
filename = sys.argv[1]
image = io.readImage( filename )
limits = sys.argv[2]
if len( limits.split(':') ) == 4:
x1 = int( limits.split(':')[0] )
x2 = int( limits.split(':')[1] )
y1 = int( limits.split(':')[2] )
y2 = int( limits.split(':')[3] )
image_out = image[x1:x2,y1:y2]
elif len( limits.split(':') ) == 3:
x1 = int( limits.split(':')[0] )
y1 = int( limits.split(':')[1] )
w = int( limits.split(':')[2] )
image_out = image[x1:x1+w,y1:y1+w]
fileout = filename[:len(filename)-4] + '.crop.DMP'
io.writeImage( fileout, image_out )
def main():
sino = io.readImage(sys.argv[1])
ctr = np.float32(sys.argv[2])
dis.plot(sino, 'Input sinogram')
sino_new = proc.sino_correct_rot_axis(sino, ctr)
'''
nang , npix = sino.shape
sino_out = sino.copy()
x = np.arange( npix )
x_out = x - shift
for i in range( nang ):
s = InterpolatedUnivariateSpline( x , sino[i,:] )
sino_out[i,:] = s( x_out )
'''
dis.plot(sino_new, 'Output sinogram')
filename = sys.argv[1][:len(sys.argv[1]) - 4] + '_interp.DMP'
io.writeImage(filename, sino_new)
def saveSino( sino , angles , args ):
## Save sinogram
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.sino is None:
filename = args.image
filename = filename[:len(filename)-4]
if args.nang < 10:
str_ang = '000' + str( args.nang )
elif args.nang < 100:
str_ang = '00' + str( args.nang )
elif args.nang < 1000:
str_ang = '0' + str( args.nang )
filename += '_ang' + str_ang + '_radon_' + args.interp
if args.geometry == '0':
filename += '_polar'
elif args.geometry == '1':
filename += '_pseudo'
else:
filename += '_text'
aux = filename
filename += '_sin.DMP'
filename = pathout + filename
else:
filename = pathout + args.sino
io.writeImage( filename , sino )
## Save list of projection angles
if args.listang is True:
fileang = aux + '_list_angles.txt'
np.savetxt( pathout + fileang , angles , fmt='%.10f', delimiter='\n' )
def save_sino( sino , angles , args ):
## Save sinogram
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.sino is None:
filename = args.image
filename = filename[:len(filename)-4]
if args.nang < 10:
str_ang = '000' + str( args.nang )
elif args.nang < 100:
str_ang = '00' + str( args.nang )
elif args.nang < 1000:
str_ang = '0' + str( args.nang )
else:
str_ang = str( args.nang )
filename += '_ang' + str_ang + '_radon_bspline_deg' \
+ str( args.bspline_degree )
if args.geometry == '0':
filename += '_polar'
elif args.geometry == '1':
filename += '_pseudo'
else:
filename += '_text'
aux = filename
filename += '_sino.DMP'
filename = pathout + filename
else:
filename = pathout + args.sino
io.writeImage( filename , sino )
def save_sino(sino, angles, args):
## Save sinogram
if args.pathout is None:
pathout = args.pathin
else:
pathout = args.pathout
if args.sino is None:
filename = args.image
filename = filename[:len(filename) - 4]
if args.nang < 10:
str_ang = '000' + str(args.nang)
elif args.nang < 100:
str_ang = '00' + str(args.nang)
elif args.nang < 1000:
str_ang = '0' + str(args.nang)
else:
str_ang = str(args.nang)
filename += '_ang' + str_ang + '_radon_bspline_deg' \
+ str( args.bspline_degree )
if args.geometry == '0':
filename += '_polar'
elif args.geometry == '1':
filename += '_pseudo'
else:
filename += '_text'
aux = filename
filename += '_sino.DMP'
filename = pathout + filename
else:
filename = pathout + args.sino
io.writeImage(filename, sino)
def main():
print('')
print('############################################')
print('############################################')
print('#### ####')
print('#### PROGRESSIVE DILATION OF AN IMAGE ####')
print('#### ####')
print('############################################')
print('############################################')
## Get input arguments
args = getArgs()
## Get input path
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
print('\nInput path:\n', pathin)
## Get output path
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nOutput path:\n', pathout)
## Read input image
image = io.readImage( pathin + args.input )
filein = args.input
nrows , ncols = image.shape
## Open log file
logfile = args.log
flog = open( pathout + logfile , 'w' )
print('\nInput path:\n', pathin)
print('\nOutput path:\n', pathout)
print('\nInput image:\n', pathin + args.input)
print('Image size: ', nrows,' X ', ncols)
print('\nLog file:\n', pathout + logfile)
flog.write('######## CREATE DILATED VERSIONS OF AN IMAGE ########')
today = datetime.datetime.now()
flog.write('\nCalculation performed on the ' + str(today))
flog.write('\nInput image:\n' + pathin + args.input )
flog.write('Image size: ' + str( nrows ) + ' X ' + str( ncols ) )
## Allocate memory for array hosting the dilated images
image_dil = np.zeros( ( nrows , ncols ) , dtype=myFloat )
## Get dilation factors
dilate_factors = args.dilate_factors
dilate_factors = np.array( dilate_factors.split(':') ).astype( int )
nimg = len( dilate_factors )
print('\nNumber of dilated images to create: ', nimg)
print('\nDilation factors: ', dilate_factors)
print('\n')
flog.write('\nNumber of dilated images to create: ' + str( nimg ) + '\n')
flog.write('\nDilation factors: ' + str( dilate_factors ) + '\n')
print('Original image')
meanSI , gsiIndex = complx_indeces( image )
ind1 = round( meanSI , 4 )
ind2 = round( gsiIndex , 4 )
if args.plot:
plot_image( image , 'Input image' , [ ind1 , ind2 ] )
## Create dilated version of the original image
for im in dilate_factors:
print('Dilation of size: ', im,' X ', im)
flog.write('\nDilation of size ' + str( im ) + ' X ' + str( im ) )
## Dilation
image_dil[:,:] = ndimage.grey_dilation( image , size=( im , im ) )
## Calculate image complexity index based on spatial information (SI)
## and gradient sparsity index
meanSI , gsiIndex = complx_indeces( image_dil )
ind1 = round( meanSI , 4 )
ind2 = round( gsiIndex , 4 )
print('meanSI ', meanSI,' gsiIndex = ', gsiIndex)
flog.write('\nmeanSI ' + str( meanSI ) + ' gsiIndex = ' + str( gsiIndex ) )
## Plot result
if args.plot:
plot_image( image_dil , 'Dilation ' + str( im ) , [ ind1 , ind2 ] )
## Write image
filename = pathout + filein[:len(filein)-4]
if im < 10:
filename += '.dil0' + str(im) + '.DMP'
else:
filename += '.dil' + str(im) + '.DMP'
io.writeImage( filename , image_dil )
print('Writing:\n', filename)
print('\n')
flog.write('\n\n')
flog.close()
def main():
print('\n')
print('#########################################################')
print('#########################################################')
print('### ###')
print('### ANALYTICAL RADON TRANSFORM OF SHEPP-LOGAN ###')
print('### ###')
print('#########################################################')
print('#########################################################')
print('\n')
## Get arguments
args = getArgs()
## Get number of pixels
npix = args.npix
nang = args.nang
print('\nNumber of pixels: ', npix)
print('Number of views: ', nang)
## Create look-up-table of Shepp-Logan ellipses or read specifics from file
if args.filein is None:
LUT = lut_shepp_logan(npix, nang)
print('\nCreated LUT for Shepp-Logan phantom')
else:
lut_file = np.loadtxt(args.filein)
LUT = lut_generic_phantom(lut_file, npix, nang)
if args.filein.find('/') == -1:
name = args.filein.split('.')[0]
else:
tokens = args.filein.split('/')
name = tokens[len(tokens) - 1].split('.')[0]
print('\nReading LUT for phantom from file:\n', args.filein)
print('Label selected for the putput files: ', name)
## Create Shepp-Logan phantom
phantom = create_phantom(LUT, npix)
## Write phantom
path = args.path
if path[len(path) - 1] != '/':
path += '/'
if args.filein is None:
filename = path + 'shepp_logan_pix'
else:
filename = path + name + '_pix'
if npix < 10:
common = '000' + str(npix)
elif npix < 100:
common = '00' + str(npix)
elif npix < 1000:
common = '0' + str(npix)
else:
common = str(npix)
filename += common + args.file_format
io.writeImage(filename, phantom)
print('\nWriting sinogram in:\n', filename)
## Plot phantom
if args.plot is True:
dis.plot(phantom, 'Shepp-Logan phantom npix=' + str(npix))
## Compute analitically radon transform of the phantom
if args.nang is not None:
print('\nCalculating analytical radon transform of the phantom ....')
sinogram = radon_transform_analytical(phantom, LUT, npix, nang)
sinogram[:, :] = sinogram[:, ::-1]
sinogram[:, :] = np.roll(sinogram, 1, axis=1)
## Plot Shepp-Logan phantom
if args.plot is True:
dis.plot(
sinogram,
'Sinogram ' + str(nang) + ' nang X ' + str(npix) + ' npix')
## Write sinogram
if args.filein is None:
filename = path + 'shepp_logan_pix' + common + '_ang'
else:
filename = path + name + '_pix' + common + '_ang'
if nang < 10:
filename += '000' + str(nang) + '_rt_anal_sino' + '.DMP'
elif nang < 100:
filename += '00' + str(nang) + '_rt_anal_sino' + '.DMP'
elif nang < 1000:
filename += '0' + str(nang) + '_rt_anal_sino' + '.DMP'
else:
filename += str(nang) + '_rt_anal_sino' + args.file_format
io.writeImage(filename, sinogram)
print('\nWriting sinogram in:\n', filename)
print('\n\n')
def main():
print('\n')
print('##############################################')
print('##############################################')
print('#### ####')
print('#### DOWNSAMPLE SINOGRAM ####')
print('#### ####')
print('##############################################')
print('##############################################')
print('\n')
## Get input arguments
args = getArgs()
## Read input sinogram
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
filename = args.sino
sino = io.readImage( pathin + filename )
nang , npix = sino.shape
print('\nInput path:\n', pathin)
print('\nInput sinogram:\n', filename)
print('Sinogram size: ', nang,' ang X ', npix,' pixels')
## Calculate downsampling factors
factors = calc_downsampl_factors( nang )
nfact = len( factors )
print('\nNumber of downsampling factors: ', nfact)
## Get projection geometry
## 1) Case of equiangular projections distributed in [0,180)
if args.geometry == '0':
angles = np.arange( nang )
angles = ( angles * 180.0 )/myFloat( nang )
print('\nDealing with equally angularly spaced projections in [0,180)')
## 2) Case of equally sloped projections distributed in [0,180)
elif args.geometry == '1':
angles = create_pseudo_polar_angles( nang ) * 180.0 / np.pi
print('\nDealing with equally sloped projections in [0,180)')
## 3) Case of list of projection angles in degrees
else:
geometryfile = pathin + args.geometry
angles = np.fromfile( geometryfile , sep="\t" )
nang = len( angles )
print('\nReading list of projection angles: ', geometryfile)
## Additional label for output downsampled sinogram
label_base = '.angle_downsampl.'
## Get output directory
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nOutput directory:\n', pathout)
## Loop on each downsampling factor
for i in range( nfact ):
## Create downsampled version of the original sinogram
print('\n########################################')
print('\nDownsampling with factor: ', factors[i])
sino_down , anglist_new , nang_new = discard_proj( sino , angles , factors[i] )
## Naming conventions for ordering purpose
if nang_new < 100:
label_add = '00' + str( nang_new )
elif nang_new < 1000:
label_add = '0'+str( nang_new )
else:
label_add = str( nang_new )
## Create name for the output sinogram and the corresponding
## list of projection angles
filename_out = filename + label_base + label_add + '.sin.DMP'
fileang = filename + label_base + label_add + '.txt'
print('\nCreating files:\n', filename_out,'\n', fileang)
## Save downsampled sinogram
io.writeImage( pathout + filename_out , sino_down )
## Save list of projection angles
fw = open( pathout + fileang , 'w' )
for i in range( nang_new ):
fw.write("%.4f\n" % anglist_new[i] )
fw.close()
print('\n')
def main():
print('\n')
print('################################################')
print('################################################')
print('############ ############')
print('############ MY IMAGE TRANSFORM ############')
print('############ ############')
print('################################################')
print('################################################')
print('\n')
## Get arguments
args = getArgs()
## Get input path
pathin = args.pathin
if pathin[len(pathin) - 1] != '/':
pathin += '/'
print('\nInput path:\n', pathin)
## Get output path
if args.pathout is None:
pathout = pathin
flag_rename = 1
else:
pathout = args.pathout
if pathout == pathin:
flag_rename = 1
else:
flag_rename = 0
if pathout[len(pathout) - 1] != '/':
pathout += '/'
print('\nOutput path:\n', pathout)
## Get single input image and apply array of actions
if args.input is not (None):
fileinput = args.input
flag_single = 1
## Get group of images and apply array of actions
elif args.label is not (None):
curr_dir = os.getcwd()
os.chdir(pathin)
label = args.label
fileinput = sorted(glob.glob('*' + label + '*'))
flag_single = 0
os.chdir(curr_dir)
## Get list of actions to be performed
if args.action is not (None):
actionArray = getListOfActions(args.action)
## Loop on all the listed actions and the listed inputs
if flag_single:
print('\nReading image: ', fileinput)
imageArray = io.readImage(pathin + fileinput)
for action in actionArray:
if action == 'rc':
print('Applying clockwise rotation of 90 degrees')
imageArray = rotate90Clockwise(imageArray)
if action == 'ra':
print('Applying counter-clockwise rotation of 90 degrees')
imageArray = rotate90Counterclockwise(imageArray)
if action == 'fv':
print('Applying vertical flip')
imageArray = flipVertically(imageArray)
if action == 'fh':
print('Applying horizontal flip')
imageArray = flipHorizontally(imageArray)
if action == 'tr':
print('Applying transpose')
imageArray = transposeImage(imageArray)
if flag_rename and args.overwrite is False:
newFileName = createOutputName(fileinput, action)
else:
newFileName = fileinput
print('Output file = ', newFileName)
io.writeImage(pathout + newFileName, imageArray)
else:
for index in range(len(fileinput)):
print('Reading image: ', fileinput[index])
imageArray = io.readImage(pathin + fileinput[index])
for action in actionArray:
if action == 'rc':
print('Applying clockwise rotation of 90 degrees')
imageArray = rotate90Clockwise(imageArray)
if action == 'ra':
print(
'Applying counter-clockwise rotation of 90 degrees'
)
imageArray = rotate90Counterclockwise(imageArray)
if action == 'fv':
print('Applying vertical flip')
imageArray = flipVertically(imageArray)
if action == 'fh':
print('Applying horizontal flip')
imageArray = flipHorizontally(imageArray)
if action == 'tr':
print('Applying transpose')
imageArray = transposeImage(imageArray)
if flag_rename and args.overwrite is False:
newFileName = createOutputName(fileinput[index],
action)
else:
newFileName = fileinput[index]
print('Output file = ', newFileName)
io.writeImage(pathout + newFileName, imageArray)
print('\n')
## Change dynamic range of grey levels
elif args.dynRange is not (None):
dynRange = args.dynRange
[minValue, maxValue] = [
myFloat(dynRange.split(':')[0]),
myFloat(dynRange.split(':')[1])
]
print('Selected dynamic range interval: [', minValue, ',', maxValue,
']')
# loop on all the listed actions and the listed inputs
if flag_single:
print('\nReading image: ', fileinput)
imageArray = io.readImage(pathin + fileinput)
print('Changing dynamic range')
imageArray = changeDynamicRange(imageArray, minValue, maxValue)
if flag_rename and args.overwrite is False:
newFileName = createOutputName(fileinput, 'dr')
else:
newFileName = fileinput
io.writeImage(pathout + newfileName, imageArray)
else:
for index in range(len(fileinput)):
print('\nReading image: ', fileinput[index])
imageArray = io.readImage(pathin + fileinput[index])
print('Changing dynamic range')
imageArray = changeDynamicRange(imageArray, minValue, maxValue)
if flag_rename and args.overwrite:
newFileName = createOutputName(fileinput[index], 'dr')
else:
newFileName = fileinput[index]
io.writeImage(pathout + newFileName, imageArray)
print('\n')
## Change dynamic range of grey levels
elif args.crop is not (None):
roiEdges = args.crop
if roiEdges.find(':') == -1:
roiEdges = int(roiEdges)
flag_square = 1
print('\nCrop center square of side: ', roiEdges)
else:
roiEdges = roiEdges.split(':')
flag_square = 0
if len(roiEdges) == 4:
edge1 = np.array([int(roiEdges[0]), int(roiEdges[1])])
edge2 = np.array([int(roiEdges[2]), int(roiEdges[3])])
elif len(roiEdges) == 3:
edge1 = np.array([int(roiEdges[0]), int(roiEdges[1])])
width_x = int(roiEdges[2])
width_y = int(roiEdges[3])
edge2 = np.array([edge1[0] + width_x, edge1[1] + width_y])
print('\nEdges of the ROI to crop: edge1 = ( ', edge1[0], ' , ',
edge1[1], ') edge2 = ( ', edge2[0], ' , ', edge2[1], ' )')
## Loop on all the listed actions and the listed inputs
if flag_single:
print('\nReading image: ', fileinput)
imageArray = io.readImage(pathin + fileinput)
if flag_square:
nrows, ncols = imageArray.shape
edge1 = np.array([
int((nrows - roiEdges) * 0.5),
int((nrows - roiEdges) * 0.5)
],
dtype=int)
edge2 = np.array([edge1[0] + roiEdges, edge1[0] + roiEdges],
dtype=int)
print('\nCropping selected ROI')
imageArray = cropROI(imageArray, edge1, edge2)
plt.imshow(imageArray, cmap=cm.Greys_r)
plt.show()
if flag_rename and args.overwrite is False:
newFileName = createOutputName(fileinput[index], 'cr')
else:
newFileName = fileinput[index]
io.writeImage(pathout + newFileName, imageArray)
else:
for index in range(len(fileinput)):
print('\nReading image: ', fileinput[index])
imageArray = io.readImage(pathin + fileinput[index])
if flag_square:
nrows, ncols = imageArray.shape
edge1 = np.array([
int((nrows - roiEdges) * 0.5),
int((nrows - roiEdges) * 0.5)
],
dtype=int)
edge2 = np.array(
[edge1[0] + roiEdges, edge1[0] + roiEdges], dtype=int)
print('\nCropping selecting ROI')
imageArray = cropROI(imageArray, edge1, edge2)
if flag_rename and args.overwrite is False:
newFileName = createOutputName(fileinput[index], 'cr')
else:
newFileName = fileinput[index]
io.writeImage(pathout + newFileName, imageArray)
print('\n')
print('\n')
print('################################################')
print('################################################')
print('############ ############')
print('############ MY IMAGE TRANSFORM ############')
print('############ ############')
print('################################################')
print('################################################')
print('\n')
def write_output_file( array , mode , args ):
## Get path
path = args.path
if path[len(path)-1] != '/':
path += '/'
## Get degree
deg = args.degree
str_deg = '_deg' + str( deg )
## String for number of pixels
npix = args.npix
if npix < 10:
common = '000' + str( npix )
elif npix < 100:
common = '00' + str( npix )
elif npix < 1000:
common = '0' + str( npix )
else:
common = str( npix )
## Save phantom
if mode == 'image':
if args.fileout is None:
filename = path + 'radial_phantom'
else:
name = args.fileout
filename = path + name + '_pix'
filename += common + str_deg + args.file_format
io.writeImage( filename , array )
print('\nWriting sinogram in:\n', filename)
## Save sinogram
elif mode == 'sinogram':
nang = args.nang
if args.fileout is None:
filename = path + 'radial_phantom' + common + '_ang'
else:
name = args.fileout
filename = path + name + '_pix' + common + '_ang'
string = '_rt_anal_sino'
if args.dpc is True:
string += '_dpc'
if nang < 10:
filename += '000' + str( nang )
elif nang < 100:
filename += '00' + str( nang )
elif nang < 1000:
filename += '0' + str( nang )
else:
filename += str( nang )
filename += string + str_deg + args.file_format
io.writeImage( filename , array )
print('\nWriting sinogram in:\n', filename)
def main():
print('\nCREATE PHANTOM WITH DIFFERENT CNR\n')
## Get input arguments
args = getArgs()
## Get input and output path
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nInput path:\n', pathin)
print('\nOutput path:\n', pathout)
## Get single image
filein = args.filein
img = io.readImage( pathin + filein ).astype( myfloat )
shape = np.array( img.shape )
print('\nReading image:\n', filein)
if len( shape ) == 2:
dim = 2
nrows , ncols = shape
print('Image size: ', nrows,' X ', ncols)
if args.plot is True:
dis.plot( img , 'Input image' )
else:
dim = 3
nz , nrows , ncols = shape
print('Image size: ', nz , ' X ' , nrows,' X ', ncols)
if args.plot is True:
dis.plot( img[0,:,:] , 'Input image' )
## Get list of CNR
cnr_str = args.cnr
if cnr_str.find( ':' ) == -1:
cnr = cnr_str
n_cnr = 1
print( 'Selected 1 factor: ' , cnr )
else:
cnr_str = np.array( cnr_str.split( ':' ) ).astype( myfloat )
cnr = np.linspace( cnr_str[0] , cnr_str[1] , np.int( cnr_str[2] ) )
n_cnr = len( cnr )
print( 'Selected 1 factor: ' , cnr )
print( '\n' )
## Loop on each CNR value
img_cnr = img.copy()
for i in range( n_cnr ):
img_cnr[:] = img
img_cnr *= cnr[i]
if n_cnr < 10:
n_str = 'cnr' + str( i )
elif n_cnr < 100:
if i < 10:
n_str = 'cnr0' + str( i )
else:
n_str = 'cnr' + str( i )
fileout = filein[:len(filein)-4] + '_' + n_str + '.DMP'
io.writeImage( pathout + fileout , img_cnr )
print( 'Created phantom factor: ' , cnr[i] , '\n', pathout + fileout)
print('\n\n')
def main():
print('\n')
print('#########################################################')
print('#########################################################')
print('### ###')
print('### ANALYTICAL RADON TRANSFORM OF SHEPP-LOGAN ###')
print('### ###')
print('#########################################################')
print('#########################################################')
print('\n')
## Get arguments
args = getArgs()
## Get number of pixels
npix = args.npix
nang = args.nang
print('\nNumber of pixels: ', npix)
print('Number of views: ', nang)
## Create look-up-table of Shepp-Logan ellipses or read specifics from file
if args.filein is None:
LUT = lut_shepp_logan( npix , nang )
print('\nCreated LUT for Shepp-Logan phantom')
else:
lut_file = np.loadtxt( args.filein )
LUT = lut_generic_phantom( lut_file , npix , nang )
if args.filein.find( '/' ) == -1:
name = args.filein.split( '.' )[0]
else:
tokens = args.filein.split( '/' )
name = tokens[len(tokens)-1].split('.')[0]
print('\nReading LUT for phantom from file:\n', args.filein)
print('Label selected for the putput files: ', name)
## Create Shepp-Logan phantom
phantom = create_phantom( LUT , npix )
## Write phantom
path = args.path
if path[len(path)-1] != '/':
path += '/'
if args.filein is None:
filename = path + 'shepp_logan_pix'
else:
filename = path + name + '_pix'
if npix < 10:
common = '000' + str( npix )
elif npix < 100:
common = '00' + str( npix )
elif npix < 1000:
common = '0' + str( npix )
else:
common = str( npix )
filename += common + args.file_format
io.writeImage( filename , phantom )
print('\nWriting sinogram in:\n', filename)
## Plot phantom
if args.plot is True:
dis.plot( phantom , 'Shepp-Logan phantom npix=' + str( npix ) )
## Compute analitically radon transform of the phantom
if args.nang is not None:
print('\nCalculating analytical radon transform of the phantom ....')
sinogram = radon_transform_analytical( phantom , LUT , npix , nang )
sinogram[:,:] = sinogram[:,::-1]
sinogram[:,:] = np.roll( sinogram , 1 , axis=1 )
## Plot Shepp-Logan phantom
if args.plot is True:
dis.plot( sinogram , 'Sinogram ' + str( nang ) + ' nang X ' + str( npix ) + ' npix' )
## Write sinogram
if args.filein is None:
filename = path + 'shepp_logan_pix' + common + '_ang'
else:
filename = path + name + '_pix' + common + '_ang'
if nang < 10:
filename += '000' + str( nang ) + '_rt_anal_sino' + '.DMP'
elif nang < 100:
filename += '00' + str( nang ) + '_rt_anal_sino' + '.DMP'
elif nang < 1000:
filename += '0' + str( nang ) + '_rt_anal_sino' + '.DMP'
else:
filename += str( nang ) + '_rt_anal_sino' + args.file_format
io.writeImage( filename , sinogram )
print('\nWriting sinogram in:\n', filename)
print('\n\n')
def write_output_file(array, mode, args):
## Get path
path = args.path
if path[len(path) - 1] != '/':
path += '/'
## Get degree
deg = args.degree
str_deg = '_deg' + str(deg)
## String for number of pixels
npix = args.npix
if npix < 10:
common = '000' + str(npix)
elif npix < 100:
common = '00' + str(npix)
elif npix < 1000:
common = '0' + str(npix)
else:
common = str(npix)
## Save phantom
if mode == 'image':
if args.fileout is None:
filename = path + 'radial_phantom'
else:
name = args.fileout
filename = path + name + '_pix'
filename += common + str_deg + args.file_format
io.writeImage(filename, array)
print('\nWriting sinogram in:\n', filename)
## Save sinogram
elif mode == 'sinogram':
nang = args.nang
if args.fileout is None:
filename = path + 'radial_phantom' + common + '_ang'
else:
name = args.fileout
filename = path + name + '_pix' + common + '_ang'
string = '_rt_anal_sino'
if args.dpc is True:
string += '_dpc'
if nang < 10:
filename += '000' + str(nang)
elif nang < 100:
filename += '00' + str(nang)
elif nang < 1000:
filename += '0' + str(nang)
else:
filename += str(nang)
filename += string + str_deg + args.file_format
io.writeImage(filename, array)
print('\nWriting sinogram in:\n', filename)
def main():
print('\nADD GAUSSIAN NOISE TO IMAGES\n')
## Get input arguments
args = getArgs()
## Get input and output path
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nInput path:\n', pathin)
print('\nOutput path:\n', pathout)
## Get single image
if args.image is not None:
## Reading image
filein = args.image
imagein = io.readImage( pathin + filein ).astype( myfloat )
shape = np.array( imagein.shape )
print('\nReading image:\n', filein)
if len( shape ) == 2:
dim = 2
nrows , ncols = shape
print('Image size: ', nrows,' X ', ncols)
if args.plot is True:
dis.plot( imagein , 'Input image' )
else:
dim = 3
nz , nrows , ncols = shape
print('Image size: ', nz , ' X ' , nrows,' X ', ncols)
if args.plot is True:
dis.plot( imagein[0,:,:] , 'Input image' )
## Compute standard deviation of the image
## and, subsequently, the gaussian sigmas
sigma = 0.5 * np.max( imagein )
sigma_list = args.sigma_list
sigma_list = np.array( sigma_list.split(':') , dtype=myfloat )
nimg = len( sigma_list )
sigma_arr = sigma * sigma_list / 100.0
print('\nSigma of the input image: ', sigma)
print('Sigma percentages: ', sigma_list)
print('\nNoise sigma values: ')
pp.printArray( sigma_arr , 4 , 'r' )
## Loop on each gaussian sigma
for im in range( nimg ):
## Add noise
if args.noise == 'gaussian':
image_noisy = add_gaussian_noise( imagein , sigma_arr[im] )
label = 'gauss'
elif args.noise == 'poisson':
image_noisy = add_poisson_noise( imagein , sigma_arr[im] )
label = 'poiss'
## Check noisy image
if args.plot is True:
if dim == 2:
if args.noise == 'gaussian':
dis.plot( image_noisy , 'Gaussian noisy image -- sigma: ' + str( sigma_list[im] ) )
elif args.noise == 'poisson':
dis.plot( image_noisy , 'Poisson noisy image -- sigma: ' + str( sigma_list[im] ) )
else:
if args.noise == 'gaussian':
dis.plot( image_noisy[0,:,:] , 'Gaussian noisy image -- sigma: ' + str( sigma_list[im] ) )
elif args.noise == 'poisson':
dis.plot( image_noisy[0,:,:] , 'Poisson noisy image -- sigma: ' + str( sigma_list[im] ) )
## Write noisy image to file
extension = filein[len(filein)-4:]
fileout = filein[:len(filein)-4] + '_' + label
if sigma_list[im] < 1:
fileout += '000' + str( int( sigma_list[im] * 10 ) ) + extension
elif sigma_list[im] < 10:
fileout += '00' + str( int( sigma_list[im] * 10 ) ) + extension
elif sigma_list[im] < 100:
fileout += '0' + str( int( sigma_list[im] * 10 ) ) + extension
else:
fileout += str( int( sigma_list[im] * 10 ) ) + extension
io.writeImage( pathout + fileout , image_noisy )
## Get bunch of input images
elif args.label is not None:
curr_dir = os.getcwd()
## Reading images
os.chdir( pathin )
files = sorted( glob.glob( '*' + args.label + '*' ) )
os.chdir( curr_dir )
num_im_input = len( files )
for i in range( num_im_input ):
imagein = io.readImage( pathin + files[i] ).astype( myfloat )
nrows , ncols = imagein.shape
print('\nReading image:\n', files[i])
print('Image size: ', nrows,' X ', ncols)
## Compute standard deviation of the image
## and, subsequently, the gaussian sigmas
sigma = np.mean( imagein )
sigma_list = args.sigma_list
sigma_list = np.array( sigma_list.split(':') , dtype=myfloat )
nimg = len( sigma_list )
sigma_arr = sigma * sigma_list / 100.0
print('\nSigma of the input image: ', sigma)
print('Sigma percentages: ', sigma_list)
print('Gaussian sigma values: ', sigma_arr)
## Loop on each gaussian sigma
for im in range( nimg ):
## Add noise
if args.noise == 'gaussian':
image_noisy = add_gaussian_noise( imagein , sigma_arr[im] )
label = 'gauss'
elif args.noise == 'poisson':
image_noisy = add_poisson_noise( imagein , sigma_arr[im] )
label = 'poiss'
## Write noisy image to file
extension = files[i][len(files[i])-4:]
fileout = files[i][:len(files[i])-4] + '_noise_' + label
if sigma_list[im] < 1:
fileout += '000' + str( int( sigma_list[im] * 10 ) ) + extension
elif sigma_list[im] < 10:
fileout += '00' + str( int( sigma_list[im] * 10 ) ) + '0' + extension
elif sigma_list[im] < 100:
fileout += '0' + str( int( sigma_list[im] * 10 ) ) + '0' + extension
else:
fileout += str( int( sigma_list[im] * 10 ) ) + '0' + extension
io.writeImage( pathout + fileout , image_noisy )
print('\n\n')
def main():
print('\n')
print('#######################################')
print('#######################################')
print('### ###')
print('### STRUCTURAL SIMILARITY INDEX ###')
print('### ###')
print('#######################################')
print('#######################################')
print('\n')
## Get input arguments
args = getArgs()
## Get oracle image
currDir = os.getcwd()
image1 = io.readImage( args.image1 )
image1 = image1.astype( myfloat )
print('\nReading reference image:\n', args.image1)
print('Image shape: ', image1.shape)
image_list = []
results = []
## CASE OF SINGLE IMAGE TO ANALYZE
if args.image2 is not None:
if args.image2.find( ':' ) == -1:
image_list.append( args.image2 )
image2 = io.readImage( args.image2 ) # image2 --> image to analyze
image2 = image2.astype(myfloat)
num_img = 1
print('\nReading image to analyze:\n', args.image2)
print('Image shape: ', image2.shape)
## Get time in which the prgram starts to run
time1 = time.time()
## Scale image to analyze with respect to the reference one
if args.scaling is True:
print('\nPerforming linear regression ....')
image2 = proc.linear_regression( image1 , image2 )
## Register images
if args.register is True:
print('\nPerforming registration of the image to analize ....')
image2 = proc.image_registration( image2 , image1 , 'ssd' )
## Crop resolution circle of the images
if args.resol_circle is True:
print('\nSelecting the resolution circle')
image1 = proc.select_resol_square( image1 )
image2 = proc.select_resol_square( image2 )
## Crop images if enabled
if args.roi is not None:
roi = args.roi
if roi.find( ':' ) != -1:
roi = roi.split(',')
p0 = [int(roi[0].split(':')[1]),int(roi[0].split(':')[0])]
p1 = [int(roi[1].split(':')[1]),int(roi[1].split(':')[0])]
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
else:
print('\nUsing pixels specified in file:\n', roi)
pixels = np.loadtxt( roi )
pixels = pixels.astype( int )
p0 = np.array([pixels[0,0],pixels[0,1]])
p1 = np.array([pixels[len(pixels)-1,0],pixels[len(pixels)-1,1]])
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
## Compute the gradient of the images, if enabled
if args.gradient is True:
image1 = compute_gradient_image( image1 )
image2 = compute_gradient_image( image2 )
## Check whether the 2 images have the same shape
if image1.shape != image2.shape:
sys.error('\nERROR: The input images have different shapes!\n')
## Plot to check whether the images have the same orientation
if args.plot is True:
print('\nPlotting images to check orientation ....')
img_list = [ image1 , image2 ]
title_list = [ 'Oracle image' , 'Image to analyze' ]
dis.plot_multi( img_list , title_list , 'Check plot' )
## Get window size
window_size = args.window
print('\nSize of the computation window: ', window_size)
if window_size % 2 != 0:
window_size += 1
print('Window size is even: window size changed to ', window_size)
## Get sigma of the gaussian kernel
sigma = SIGMA
print('Sigma of the gaussian kernel: ', sigma)
## Calculate map of SSIM values
map_ssim , MSSIM = compute_map_ssim( image1 , image2 , window_size , sigma )
results.append( MSSIM )
if args.plot is True:
print('\nPlotting images + map of ssim ....')
img_list = [ image1 , image2 , map_ssim ]
title_list = [ 'Oracle image' , 'Image to analyze' , 'Map of SSIM' ]
dis.plot_multi( img_list , title_list , 'Images and map of SSIM' , colorbar=True )
## Save SSIM map
filename = args.image2[:len(args.image2)-4] + '_ssim_map.png'
io.writeImage( filename , map_ssim )
## CASE OF MULTIPLE SPECIFIC IMAGES
else:
image_list = args.image2.split(':')
img_list = [ ]
title_list = [ ]
num_img = len( image_list )
for im in range( num_img ):
img_file = image_list[im]
image1 = io.readImage( args.image1 )
image2 = io.readImage( img_file ) # image2 --> image to analyze
image2 = image2.astype(myfloat)
print('\nReading image to analyze:\n', args.image2)
print('Image shape: ', image2.shape)
## Get time in which the prgram starts to run
time1 = time.time()
## Scale image to analyze with respect to the reference one
if args.scaling is True:
print('\nPerforming linear regression ....')
image2 = proc.linear_regression( image1 , image2 )
## Register images
if args.register is True:
print('\nPerforming registration of the image to analize ....')
image2 = proc.image_registration( image2 , image1 , 'ssd' )
## Crop resolution circle of the images
if args.resol_circle is True:
print('\nSelecting the resolution circle')
image1 = proc.select_resol_square( image1 )
image2 = proc.select_resol_square( image2 )
## Crop images if enabled
if args.roi is not None:
roi = args.roi
if args.roi.find(',') != -1:
roi = roi.split(',')
p0 = [int(roi[0].split(':')[1]),int(roi[0].split(':')[0])]
p1 = [int(roi[1].split(':')[1]),int(roi[1].split(':')[0])]
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
else:
print('\nUsing pixels specified in file:\n', roi)
pixels = np.loadtxt( roi )
pixels = pixels.astype( int )
p0 = np.array([pixels[0,0],pixels[0,1]])
p1 = np.array([pixels[len(pixels)-1,0],pixels[len(pixels)-1,1]])
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
## Compute the gradient of the images, if enabled
if args.gradient is True:
image1 = compute_gradient_image( image1 )
image2 = compute_gradient_image( image2 )
## Check whether the 2 images have the same shape
if image1.shape != image2.shape:
sys.exit('\nERROR: The input images have different shapes!\n')
## Plot to check whether the images have the same orientation
if args.plot is True:
print('\nPlotting images to check orientation ....')
img_list2 = [ image1 , image2 ]
title_list2 = [ 'Oracle image' , 'Image to analyze' ]
dis.plot_multi( img_list2 , title_list2 , 'Check plot' )
## Get window size
window_size = args.window
print('\nSize of the computation window: ', window_size)
if window_size % 2 != 0:
window_size += 1
print('Window size is even: window size changed to ', window_size)
## Get sigma of the gaussian kernel
sigma = SIGMA
print('Sigma of the gaussian kernel: ', sigma)
## Calculate map of SSIM values
map_ssim , MSSIM = compute_map_ssim( image1 , image2 , window_size , sigma )
results.append( MSSIM )
map_ssim[ map_ssim < 0 ] = 0.0
if args.plot is True:
img_list.append( map_ssim )
title_list.append( 'SSIM map n.' + str( im + 1 ) )
## Save SSIM map
filename = img_file[:len(img_file)-4] + '_ssim_map.png'
io.writeImage( filename , map_ssim )
if args.plot is True:
print('\nPlotting images + map of ssim ....')
dis.plot( img_list[0] )
dis.plot( img_list[1] )
dis.plot_multi_colorbar( img_list , title_list , 'Maps of SSIM' )
## CASE OF BUNCH OF IMAGES TO ANALYZE
else:
os.chdir(args.path)
image_list = sorted( glob.glob('*') )
num_images = len( image_list )
img_list.append( image1 )
title_list.append('Oracle image')
## Get time in which the prgram starts to run
time1 = time.time()
## Loop on all the images to analyze
for i in range( num_img ):
image1 = io.readImage( args.image1 )
image2 = io.readImage( image_list[i] )
image2 = image2.astype(myfloat)
print('\n\n\nIMAGE TO ANALYZE NUMBER: ', i)
print('\nReading image to analyze:\n', fileIn[i])
print('Image shape: ', image2.shape)
## Scale image to analyze with respect to the reference one
if args.scaling is True:
print('\nPerforming linear regression ....')
image2 = proc.linear_regression( image1 , image2 )
## Register images
if args.register is True:
print('\nPerforming registration of the image to analize ....')
image2 = proc.image_registration( image2 , image1 , 'ssd' )
## Crop resolution circle of the images
if args.resol_circle is True:
print('\nSelecting the resolution circle')
image1 = proc.select_resol_square( image1 )
image2 = proc.select_resol_square( image2 )
## Crop images if enabled
if args.roi is not None:
roi = args.roi
if args.roi.find(',') != -1:
roi = roi.split(',')
p0 = [int(roi[0].split(':')[1]),int(roi[0].split(':')[0])]
p1 = [int(roi[1].split(':')[1]),int(roi[1].split(':')[0])]
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
else:
print('\nUsing pixels specified in file:\n', roi)
pixels = np.loadtxt( roi )
pixels = pixels.astype( int )
p0 = np.array([pixels[0,0],pixels[0,1]])
p1 = np.array([pixels[len(pixels)-1,0],pixels[len(pixels)-1,1]])
print('Cropping rectangular ROI with vertices: ( ', \
p0[0],' , ', p0[1], ') ( ', p1[0],' , ',p1[1], ')')
image1 = proc.crop_image( image1 , p0 , p1 )
image2 = proc.crop_image( image2 , p0 , p1 )
## Compute the gradient of the images, if enabled
if args.gradient is True:
image1 = compute_gradient_image( image1 )
image2 = compute_gradient_image( image2 )
## Check whether the 2 images have the same shape
if image1.shape != image2.shape and args.roi is None:
sys.error('\nERROR: The input images have different shapes!\n')
## Plot to check whether the images have the same orientation
if args.plot is True:
print('\nPlotting images to check orientation ....')
img_list = [ image1 , image2 ]
title_list = [ 'Oracle image' , 'Image to analyze' ]
dis.plot_multi( img_list , title_list , 'Check plot' )
## Get window size
window_size = args.window
print('\nSize of the computation window: ', window_size)
if window_size % 2 != 0:
window_size += 1
print('Window size is even: window size changed to ', window_size)
## Get sigma of the gaussian kernel
sigma = SIGMA
print('Sigma of the gaussian kernel: ', sigma)
## Calculate map of SSIM values
map_ssim,MSSIM = compute_map_ssim( image1 , image2 , window_size , sigma )
results.append( MSSIM )
## Diplay map of SSIM
if args.plot is True:
fig = plt.figure()
plt.title('Map of SSIM indeces')
plt.imshow(map_ssim,cmap = cm.Greys_r)
plt.colorbar()
plt.show()
## Save SSIM map
filename = image_list[i][:len(image_list[i])-4] + '_ssim_map.png'
io.writeImage( filename , map_ssim )
os.chdir(currDir)
## Summary print of the results
print('\n\nSUMMARY OF THE RESULTS:\n')
print('\nReference image:\n', args.image1)
for i in range( num_img ):
print('\nTest image number ', i,'\n', image_list[i])
print('SSIM = ' , results[i])
## Get time elapsed for the run of the program
time2 = time.time() - time1
print('\n\nTime elapsed for the calculation: ', time2)
## Write log file
write_log_file( args , image_list , results )
print('\n\n')
def main():
print('\nADD GAUSSIAN BLURRING TO IMAGES\n')
## Get input arguments
args = getArgs()
## Get input and output path
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nInput path:\n', pathin)
print('\nOutput path:\n', pathout)
## Get single image
if args.image is not None:
## Reading image
filein = args.image
imagein = io.readImage( pathin + filein )
nrows , ncols = imagein.shape
print('\nReading image:\n', filein)
print('Image size: ', nrows,' X ', ncols)
## Check plot
if args.plot is True:
dis.plot( imagein , 'Input image' )
## Allocate memory for the noisy temporary image
image_noisy = np.zeros( ( nrows, ncols ) , dtype=myfloat )
## Compute standard deviation of the image
## and, subsequently, the gaussian sigmas
sigma = np.mean( imagein )
sigma_list = args.sigma_list
sigma_list = np.array( sigma_list.split(':') , dtype=myfloat )
nimg = len( sigma_list )
sigma_arr = sigma * sigma_list / 100.0
print('\nSigma of the input image: ', sigma)
print('Sigma percentages: ', sigma_list)
print('\nGaussian sigma values: ')
pp.printArray( sigma_arr , 4 , 'r' )
## Loop on each gaussian sigma
for im in range( nimg ):
## Add gaussian noise
image_noisy[:,:] = add_gaussian_blurring( imagein , sigma_arr[im] )
## Check noisy image
if args.plot is True:
dis.plot( image_noisy , 'Noisy image -- sigma: ' + str( sigma_list[im] ) )
## Write noisy image to file
fileout = filein[:len(filein)-4] + '_blur'
if sigma_list[im] < 10:
fileout += '00' + str( int( sigma_list[im] ) ) + '.DMP'
elif sigma_list[im] < 100:
fileout += '0' + str( int( sigma_list[im] ) ) + '.DMP'
else:
fileout += str( int( sigma_list[im] ) ) + '.DMP'
io.writeImage( pathout + fileout , image_noisy )
## Get bunch of input images
elif args.label is not None:
curr_dir = os.getcwd()
## Reading images
os.chdir( pathin )
files = sorted( glob.glob( '*' + args.label + '*' ) )
os.chdir( curr_dir )
num_im_input = len( files )
for i in range( num_im_input ):
imagein = io.readImage( pathin + files[i] )
nrows , ncols = imagein.shape
print('\nReading image:\n', files[i])
print('Image size: ', nrows,' X ', ncols)
## Compute standard deviation of the image
## and, subsequently, the gaussian sigmas
sigma = np.mean( imagein )
sigma_list = args.sigma_list
sigma_list = np.array( sigma_list.split(':') , dtype=myfloat )
nimg = len( sigma_list )
sigma_arr = sigma * sigma_list / 100.0
print('\nSigma of the input image: ', sigma)
print('Sigma percentages: ', sigma_list)
print('\nGaussian sigma values: ')
pp.printArray( sigma_arr , 4 , 'r' )
## Loop on each gaussian sigma
for im in range( nimg ):
## Add gaussian noise
image_noisy = add_gaussian_blurring( imagein , sigma_arr[im] )
## Write noisy image to file
fileout = files[i][:len(files[i])-4] + '_blur'
if sigma_list[im] < 10:
fileout += '00' + str( int( sigma_list[im] ) ) + '.DMP'
elif sigma_list[im] < 100:
fileout += '0' + str( int( sigma_list[im] ) ) + '.DMP'
else:
fileout += str( int( sigma_list[im] ) ) + '.DMP'
io.writeImage( pathout + fileout , image_noisy )
print('\n\n')
def create_dataset( args ):
## Get input image
image_ref = io.readImage( args.inputs )
npix = image_ref.shape[0]
## Create impulsed image
nimp = int( np.floor( npix / nimp_factor ) )
c = npix * 0.5
ind_imp = np.zeros( ( nimp , 2 ) , dtype=int )
i = 0
print('\nSelecting impulse locations ...')
while i < nimp:
x = int( np.round( np.random.rand() * npix ) )
y = int( np.round( np.random.rand() * npix ) )
dist1 = np.ceil( np.sqrt( ( x - c )**2 + ( y - c )**2 ) )
if dist1 < c:
if i != 0:
for j in range( i + 1 ):
x0 = ind_imp[j,0]; y0 = ind_imp[j,1]
dist2 = np.ceil( np.sqrt( ( x - x0 )**2 + ( y - y0 )**2 ) )
if dist2 <= r:
break
elif dist2 > r and j < i:
continue
elif dist2 > r and j == i:
ind_imp[i,0] = x; ind_imp[i,1] = y
i += 1
else:
ind_imp[i,0] = x; ind_imp[i,1] = y
i += 1
print('... locations selected!')
print('\nImpulse locations:')
pp.printArray2D( ind_imp )
image_imp = image_ref.copy()
imp_factor = args.imp_factor
for i in range( len( ind_imp ) ):
x0 = ind_imp[i][0]; y0 = ind_imp[i][1]
image_imp[x0,y0] += image_imp[x0,y0] * imp_factor
## Create sinograms
nang = int( np.ceil( npix * np.pi * 0.5 ) )
angles = myfloat( np.arange( nang ) / myfloat( nang ) * 180.0 )
image_ref = myfloat( image_ref ); image_imp = myfloat( image_imp )
sino_ref = grid.forwproj( image_ref , angles )
sino_imp = grid.forwproj( image_imp , angles )
## Check plots
if args.plot is True:
image_list = [ image_ref , image_imp ]
title_list = [ 'Reference image' , 'Impulsed image' ]
dis.plot_multi( image_list , title_list )
image_list = [ sino_ref , sino_imp ]
title_list = [ 'Sinogram of reference image' , 'Sinogram of impulsed image' ]
dis.plot_multi( image_list , title_list )
## Write output files
namebase = args.inputs
if namebase.find( '/' ) != -1:
namebase = namebase.split( '/' )
filename = namebase[len(namebase)-1]
filename = filename[:len(filename)-4]
for i in range( len(namebase)-1 ):
if i == 0:
pathout = '/' + namebase[i]
else:
pathout += namebase[i] + '/'
else:
filename = namebase
filename = filename[:len(filename)-4]
pathout = './'
print('\nWriting output files ...')
fileout = pathout + filename + '_lir.DMP'
io.writeImage( fileout , image_imp )
print( fileout )
fileout = pathout + filename + '_sin.DMP'
io.writeImage( fileout , sino_ref )
print( fileout )
fileout = pathout + filename + '_lir_sin.DMP'
io.writeImage( fileout , sino_imp )
print( fileout )
fileout = pathout + filename + '_lir.txt'
np.savetxt( fileout , ind_imp , newline= '\n' )
print( fileout )
print('\n')
def main():
print('\nRESCALE IMAGE\n')
## Get input arguments
args = getArgs()
## Get input and output path
pathin = args.pathin
if pathin[len(pathin)-1] != '/':
pathin += '/'
if args.pathout is None:
pathout = pathin
else:
pathout = args.pathout
if pathout[len(pathout)-1] != '/':
pathout += '/'
print('\nInput path:\n', pathin)
print('\nOutput path:\n', pathout)
## Get single image
if args.image is not None:
## Reading image
filein = args.image
imagein = io.readImage( pathin + filein )
nrows , ncols = imagein.shape[0] , imagein.shape[1]
print('\nReading image:', filein)
print('Image size: ', nrows,' X ', ncols)
## Check plot
if args.plot is True:
dis.plot( imagein , 'Input image' )
## Make image square
if args.square is True:
if nrows < ncols:
imagein = imagein[:,:nrows]
else:
imagein = imagein[:ncols,:]
## Rescaled image
if args.rescale is not None:
rescale = args.rescale
nrows_new = int( nrows * rescale )
ncols_new = int( ncols * rescale )
else:
nrows_new = ncols_new = args.npix
rescale = nrows_new / myfloat( nrows )
image_rescale = rescale_image( imagein , rescale )
print('\nRescaled factor: ', rescale)
print('Rescaled-image size: ', image_rescale.shape)
## Check plot
if args.plot is True:
dis.plot( image_rescale , 'Rescaled image -- factor = '
+ str( rescale ) )
## Write noisy image to file
fileout = filein[:len(filein)-4] + '_pix'
if nrows_new < 100:
fileout += '00' + str( nrows_new ) + '.DMP'
elif nrows_new < 1000:
fileout += '0' + str( nrows_new ) + '.DMP'
else:
fileout += str( nrows_new ) + '.DMP'
io.writeImage( pathout + fileout , image_rescale )
print('\nWriting rescaled image:', fileout)
## Get bunch of input images
elif args.label is not None:
curr_dir = os.getcwd()
## Reading images
os.chdir( pathin )
files = sorted( glob.glob( '*' + args.label + '*' ) )
os.chdir( curr_dir )
num_im_input = len( files )
for i in range( num_im_input ):
imagein = io.readImage( pathin + files[i] )
nrows , ncols = imagein.shape[0] , imagein.shape[1]
print('\nReading image:\n', files[i])
print('\nImage size: ', nrows,' X ', ncols)
## Make image square
if args.square is True:
if nrows < ncols:
imagein = imagein[:,:nrows]
else:
imagein = imagein[:ncols,:]
## Rescaled image
if args.rescale is not None:
rescale = args.rescale
nrows_new = int( nrows * rescale )
ncols_new = int( ncols * rescale )
else:
nrows_new = ncols_new = args.npix
rescale = nrows_new / myfloat( nrows )
image_rescale = rescale_image( imagein , rescale )
print('\nRescaled factor: ', rescale)
print('Rescaled-image size: ', image_rescale.shape)
## Write noisy image to file
fileout = files[i][:len(files[i])-4] + '_pix'
if nrows_new < 100:
fileout += '00' + str( nrows_new ) + '.DMP'
elif nrows_new < 1000:
fileout += '0' + str( nrows_new ) + '.DMP'
else:
fileout += str( nrows_new ) + '.DMP'
io.writeImage( pathout + fileout , image_rescale )
print('\nWriting rescaled image:', fileout)
print('\n\n')
def compute_lir( args ):
## Get input images
inputs = args.inputs
file1 , file2 , file3 = inputs.split( ':' )
rec_ref = io.readImage( file1 )
rec_imp = io.readImage( file2 )
imp_pos = np.loadtxt( file3 ).astype( int )
npix = rec_ref.shape[0]
nimp = imp_pos.shape[0]
## Display input images
if args.plot is True:
image_imp = np.zeros( ( npix , npix ) )
image_list = [ rec_ref , rec_imp ]
title_list = [ 'Reference reconstruction' ,
'Impulsed reconstruction' ]
dis.plot_multi( image_list , title_list )
## Compute image difference
rec_diff = rec_imp - rec_ref
## Resize image
zoom_factor = args.zoom
rec_diff = zoom( rec_diff , zoom_factor )
if args.plot is True:
dis.plot( rec_diff , 'Difference image x' + str( zoom_factor ), ')')
## Compute FWHM for each impulse and get an average of them
fwhm = np.zeros( nimp , dtype=myfloat )
denom = zoom_factor
for i in range( nimp ):
x0 = int( zoom_factor * imp_pos[i,0] ); y0 = int( zoom_factor * imp_pos[i,1] )
square = rec_diff[x0-r:x0+r,y0-r:y0+r]
hh = np.max( square ) * 0.5
aux = np.argwhere( square >= hh )
fwhm[i] = np.sqrt( len( aux ) ) / denom
FWHM = np.sum( fwhm ) / myfloat( nimp )
print('\nFWHM values:\n')
pp.printArray( fwhm )
print('\nFWHM average: ', FWHM)
print('\n')
## Write log file of the results
namebase = file1
pathout = None
if namebase.find( '/' ) != -1:
namebase = namebase.split( '/' )
filename = namebase[len(namebase)-1]
filename = filename[:len(filename)-4]
for i in range( len(namebase)-1 ):
if i == 0:
pathout = '/' + namebase[i]
else:
pathout += namebase[i] + '/'
else:
filename = namebase
filename = filename[:len(filename)-4]
pathout = './'
print('\nWriting files ...')
fileout = pathout + filename + '_lir_diff.DMP'
io.writeImage( fileout , rec_diff )
print( fileout )
fileout = pathout + filename + '_lir_analysis.txt'
fp = open( fileout , 'w' )
fp.write('\n')
fp.write('\n###########################################')
fp.write('\n###########################################')
fp.write('\n### ###')
fp.write('\n### LOCAL IMPULSE RESPONSE ANALYSIS ###')
fp.write('\n### ###')
fp.write('\n###########################################')
fp.write('\n###########################################')
fp.write('\n')
today = datetime.datetime.now()
fp.write('\nLIR calculation performed on the ' + str( today ))
fp.write('\n\nNumbers of impulses: ' + str( nimp ))
fp.write('\n\nAverage FWHM: ' + str( FWHM ))
print( fileout )
print( '\n' )