# MAIN PARAMETER BLOCK imagefile = "tvmin"+str(scalefactor)+"_lam1e-4_" phantomfile = "structureWalnut.npy" lam = 1.e-4 itermax = 10001 imagedumpset=[100,1000] nviews = [4,8,12,16,18,19,20,21,22,24,28,32,36,40,50,100] # end of MAIN PARAMETER BLOCK if using_CUDA: tomo.set_GPU_dev(0) print "GPU = ",tomo.get_GPU_dev() def gradim(image): '''Compute gradient of an image for the TV norm. ''' xgrad = image.mat.copy() ygrad = image.mat.copy() temp = image.mat xgrad[:-1,:] = temp[1:,:] - temp[:-1,:] ygrad[:,:-1] = temp[:,1:] - temp[:,:-1] xgrad[-1,:] = -1.0* temp[-1,:] ygrad[:,-1] = -1.0* temp[:,-1] return xgrad,ygrad
# MAIN PARAMETER BLOCK imagefile = "l1min"+str(scalefactor)+"_lam1e-4_" phantomfile = "structureWalnut.npy" lam = 1.e-4 itermax = 100001 imagedumpset=[100,1000,10000] nviews = [10,18,19,20,21,22,24,26,28,30,40,60] # end of MAIN PARAMETER BLOCK if using_CUDA: tomo.set_GPU_dev(0) print "GPU = ",tomo.get_GPU_dev() # Image parameters # numbers of pixels in each dimension of the image array nx0 = 1024/scalefactor ny0 = 1024/scalefactor # physical lengths of image array xlen0 = 2.0 ylen0 = 2.0 # physical corner of image array x00 = -1. y00 = -1. # for the present theoretical studies physical dimension has little meaning
phshepp = generate_shepp_logan_HC() # print '''This program is designed to run in an ipython shell with matplotlib. From terminal command line run: ipython --pylab From within the ipython shell execute: run testCUDA.py ''' print tomo.get_GPU_dev() tomo.set_GPU_dev(0) print 'GPU dev now: ',tomo.get_GPU_dev() #image parameters nx0=1024 ny0=1024 xlen0=2.0 ylen0=2.0 x00=-1.0 y00=-1.0 # scan configuration parameters srad = 4.
from phantoms_tomo2D import generate_shepp_logan_HC phshepp = generate_shepp_logan_HC() # print '''This program is designed to run in an ipython shell with matplotlib. From terminal command line run: ipython --pylab From within the ipython shell execute: run testCUDA.py ''' print tomo.get_GPU_dev() tomo.set_GPU_dev(0) print 'GPU dev now: ', tomo.get_GPU_dev() #image parameters nx0 = 1024 ny0 = 1024 xlen0 = 2.0 ylen0 = 2.0 x00 = -1.0 y00 = -1.0 # scan configuration parameters srad = 4. sd = 8.
