def read_compressed_eigerdata(mask,
filename,
beg,
end,
bad_pixel_threshold=1e15,
hot_pixel_threshold=2**30,
bad_pixel_low_threshold=0,
bad_frame_list=None,
with_pickle=False,
direct_load_data=False,
data_path=None,
images_per_file=100):
'''
Read already compress eiger data
Return
mask
avg_img
imsum
bad_frame_list
'''
#should use try and except instead of with_pickle in the future!
CAL = False
if not with_pickle:
CAL = True
else:
try:
mask, avg_img, imgsum, bad_frame_list_ = pkl.load(
open(filename + '.pkl', 'rb'))
except:
CAL = True
if CAL:
FD = Multifile(filename, beg, end)
imgsum = np.zeros(FD.end - FD.beg, dtype=np.float)
avg_img = np.zeros([FD.md['ncols'], FD.md['nrows']], dtype=np.float)
imgsum, bad_frame_list_ = get_each_frame_intensityc(
FD,
sampling=1,
bad_pixel_threshold=bad_pixel_threshold,
bad_pixel_low_threshold=bad_pixel_low_threshold,
hot_pixel_threshold=hot_pixel_threshold,
plot_=False,
bad_frame_list=bad_frame_list)
avg_img = get_avg_imgc(FD,
beg=None,
end=None,
sampling=1,
plot_=False,
bad_frame_list=bad_frame_list_)
FD.FID.close()
return mask, avg_img, imgsum, bad_frame_list_
def _get_mean_intensity_one_q(FD, sampling, labels):
mi = np.zeros(int((FD.end - FD.beg) / sampling))
n = 0
qind, pixelist = roi.extract_label_indices(labels)
# iterate over the images to compute multi-tau correlation
fra_pix = np.zeros_like(pixelist, dtype=np.float64)
timg = np.zeros(FD.md['ncols'] * FD.md['nrows'], dtype=np.int32)
timg[pixelist] = np.arange(1, len(pixelist) + 1)
for i in range(FD.beg, FD.end, sampling):
(p, v) = FD.rdrawframe(i)
w = np.where(timg[p])[0]
pxlist = timg[p[w]] - 1
mi[n] = np.bincount(qind[pxlist], weights=v[w], minlength=2)[1:]
n += 1
return mi
def get_time_edge_avg_img(FD, frame_edge, show_progress=True):
'''YG Dev Nov 14, 2017@CHX
Get averaged img by giving FD and frame edges
Parameters
----------
FD: Multifile class
compressed file
frame_edge: np.array, can be created by create_time_slice( Nimg, slice_num= 3,
slice_width= 1, edges = None )
e.g., np.array([[ 5, 6],
[2502, 2503],
[4999, 5000]])
Return:
array: (N of frame_edge, averaged image) , i.e., d[0] gives the first averaged image
'''
Nt = len(frame_edge)
d = np.zeros(Nt, dtype=object)
for i in range(Nt):
t1, t2 = frame_edge[i]
d[i] = get_avg_imgc(FD,
beg=t1,
end=t2,
sampling=1,
plot_=False,
show_progress=show_progress)
return d
def get_bin_frame(self):
FD = self.FD
self.frames = np.zeros(
[FD.md['ncols'], FD.md['nrows'],
len(self.time_edge)])
for n in tqdm(range(len(self.time_edge))):
#print (n)
t1, t2 = self.time_edge[n]
#print( t1, t2)
self.frames[:, :, n] = get_avg_imgc(FD,
beg=t1,
end=t2,
sampling=1,
plot_=False,
show_progress=False)
def cal_waterfallc(FD,
labeled_array,
qindex=1,
bin_waterfall=False,
waterfall_roi_size=None,
save=False,
*argv,
**kwargs):
"""Compute the mean intensity for each ROI in the compressed file (FD)
Parameters
----------
FD: Multifile class
compressed file
labeled_array : array
labeled array; 0 is background.
Each ROI is represented by a nonzero integer. It is not required that
the ROI labels are contiguous
qindex : int, qindex=1, give the first ring in SAXS geometry. NOTE: qindex=0 is non-photon pixels.
The ROI's to use.
bin_waterfall: if True, will bin the waterfall along y-axis
waterfall_roi_size: the size of waterfall roi, (x-size, y-size), if bin, will bin along y
save: save the waterfall
Returns
-------
waterfall : array
The mean intensity of each ROI for all `images`
Dimensions:
len(mean_intensity) == len(index)
len(mean_intensity[0]) == len(images)
index : list
The labels for each element of the `mean_intensity` list
"""
sampling = 1
labeled_array_ = np.array(labeled_array == qindex, dtype=np.int64)
qind, pixelist = roi.extract_label_indices(labeled_array_)
if labeled_array_.shape != (FD.md['ncols'], FD.md['nrows']):
raise ValueError(
" `image` shape (%d, %d) in FD is not equal to the labeled_array shape (%d, %d)"
% (FD.md['ncols'], FD.md['nrows'], labeled_array_.shape[0],
labeled_array_.shape[1]))
# pre-allocate an array for performance
# might be able to use list comprehension to make this faster
watf = np.zeros([int((FD.end - FD.beg) / sampling), len(qind)])
#fra_pix = np.zeros_like( pixelist, dtype=np.float64)
timg = np.zeros(FD.md['ncols'] * FD.md['nrows'], dtype=np.int32)
timg[pixelist] = np.arange(1, len(pixelist) + 1)
#maxqind = max(qind)
norm = np.bincount(qind)[1:]
n = 0
#for i in tqdm(range( FD.beg , FD.end )):
for i in tqdm(range(FD.beg, FD.end, sampling),
desc='Get waterfall for q index=%s' % qindex):
(p, v) = FD.rdrawframe(i)
w = np.where(timg[p])[0]
pxlist = timg[p[w]] - 1
watf[n][pxlist] = v[w]
n += 1
if bin_waterfall:
watf_ = watf.copy()
watf = np.zeros([watf_.shape[0], waterfall_roi_size[0]])
for i in range(waterfall_roi_size[1]):
watf += watf_[:, waterfall_roi_size[0] * i:waterfall_roi_size[0] *
(i + 1)]
watf /= waterfall_roi_size[0]
if save:
path = kwargs['path']
uid = kwargs['uid']
np.save(path + '%s_waterfall' % uid, watf)
return watf
def mean_intensityc(FD, labeled_array, sampling=1, index=None):
"""Compute the mean intensity for each ROI in the compressed file (FD)
Parameters
----------
FD: Multifile class
compressed file
labeled_array : array
labeled array; 0 is background.
Each ROI is represented by a nonzero integer. It is not required that
the ROI labels are contiguous
index : int, list, optional
The ROI's to use. If None, this function will extract averages for all
ROIs
Returns
-------
mean_intensity : array
The mean intensity of each ROI for all `images`
Dimensions:
len(mean_intensity) == len(index)
len(mean_intensity[0]) == len(images)
index : list
The labels for each element of the `mean_intensity` list
"""
qind, pixelist = roi.extract_label_indices(labeled_array)
if labeled_array.shape != (FD.md['ncols'], FD.md['nrows']):
raise ValueError(
" `image` shape (%d, %d) in FD is not equal to the labeled_array shape (%d, %d)"
% (FD.md['ncols'], FD.md['nrows'], labeled_array.shape[0],
labeled_array.shape[1]))
# handle various input for `index`
if index is None:
index = list(np.unique(labeled_array))
index.remove(0)
else:
try:
len(index)
except TypeError:
index = [index]
index = np.array(index)
#print ('here')
good_ind = np.zeros(max(qind), dtype=np.int32)
good_ind[index - 1] = np.arange(len(index)) + 1
w = np.where(good_ind[qind - 1])[0]
qind = good_ind[qind[w] - 1]
pixelist = pixelist[w]
# pre-allocate an array for performance
# might be able to use list comprehension to make this faster
mean_intensity = np.zeros([int((FD.end - FD.beg) / sampling), len(index)])
#fra_pix = np.zeros_like( pixelist, dtype=np.float64)
timg = np.zeros(FD.md['ncols'] * FD.md['nrows'], dtype=np.int32)
timg[pixelist] = np.arange(1, len(pixelist) + 1)
#maxqind = max(qind)
norm = np.bincount(qind)[1:]
n = 0
#for i in tqdm(range( FD.beg , FD.end )):
for i in tqdm(range(FD.beg, FD.end, sampling),
desc='Get ROI intensity of each frame'):
(p, v) = FD.rdrawframe(i)
w = np.where(timg[p])[0]
pxlist = timg[p[w]] - 1
mean_intensity[n] = np.bincount(qind[pxlist],
weights=v[w],
minlength=len(index) + 1)[1:]
n += 1
mean_intensity /= norm
return mean_intensity, index
def _readImage(self):
(p, v) = self._readImageRaw()
img = np.zeros((self.md['ncols'], self.md['nrows']))
np.put(np.ravel(img), p, v)
return (img)
def init_compress_eigerdata(images,
mask,
md,
filename,
bad_pixel_threshold=1e15,
hot_pixel_threshold=2**30,
bad_pixel_low_threshold=0,
nobytes=4,
bins=1,
with_pickle=True):
'''
Compress the eiger data
Create a new mask by remove hot_pixel
Do image average
Do each image sum
Find badframe_list for where image sum above bad_pixel_threshold
Generate a compressed data with filename
if bins!=1, will bin the images with bin number as bins
Header contains 1024 bytes ['Magic value', 'beam_center_x', 'beam_center_y', 'count_time', 'detector_distance',
'frame_time', 'incident_wavelength', 'x_pixel_size', 'y_pixel_size',
bytes per pixel (either 2 or 4 (Default)),
Nrows, Ncols, Rows_Begin, Rows_End, Cols_Begin, Cols_End ]
Return
mask
avg_img
imsum
bad_frame_list
'''
fp = open(filename, 'wb')
#Make Header 1024 bytes
#md = images.md
if bins != 1:
nobytes = 8
Header = struct.pack('@16s8d7I916x', b'Version-COMP0001',
md['beam_center_x'], md['beam_center_y'],
md['count_time'], md['detector_distance'],
md['frame_time'], md['incident_wavelength'],
md['x_pixel_size'], md['y_pixel_size'], nobytes,
md['pixel_mask'].shape[1], md['pixel_mask'].shape[0],
0, md['pixel_mask'].shape[1], 0,
md['pixel_mask'].shape[0])
fp.write(Header)
Nimg_ = len(images)
avg_img = np.zeros_like(images[0], dtype=np.float)
Nopix = float(avg_img.size)
n = 0
good_count = 0
frac = 0.0
if nobytes == 2:
dtype = np.int16
elif nobytes == 4:
dtype = np.int32
elif nobytes == 8:
dtype = np.float64
else:
print(
"Wrong type of nobytes, only support 2 [np.int16] or 4 [np.int32]")
dtype = np.int32
Nimg = Nimg_ // bins
time_edge = np.array(
create_time_slice(N=Nimg_, slice_num=Nimg, slice_width=bins))
imgsum = np.zeros(Nimg)
if bins != 1:
print('The frames will be binned by %s' % bins)
for n in tqdm(range(Nimg)):
t1, t2 = time_edge[n]
img = np.average(images[t1:t2], axis=0)
mask &= img < hot_pixel_threshold
p = np.where((np.ravel(img) > 0)
& np.ravel(mask))[0] #don't use masked data
v = np.ravel(np.array(img, dtype=dtype))[p]
dlen = len(p)
imgsum[n] = v.sum()
if (imgsum[n] > bad_pixel_threshold) or (imgsum[n] <=
bad_pixel_low_threshold):
#if imgsum[n] >=bad_pixel_threshold :
dlen = 0
fp.write(struct.pack('@I', dlen))
else:
np.ravel(avg_img)[p] += v
good_count += 1
frac += dlen / Nopix
#s_fmt ='@I{}i{}{}'.format( dlen,dlen,'ih'[nobytes==2])
fp.write(struct.pack('@I', dlen))
fp.write(struct.pack('@{}i'.format(dlen), *p))
if bins == 1:
fp.write(
struct.pack('@{}{}'.format(dlen, 'ih'[nobytes == 2]), *v))
else:
fp.write(
struct.pack('@{}{}'.format(dlen, 'dd'[nobytes == 2]), *v))
#n +=1
fp.close()
frac /= good_count
print("The fraction of pixel occupied by photon is %6.3f%% " %
(100 * frac))
avg_img /= good_count
bad_frame_list = np.where((np.array(imgsum) > bad_pixel_threshold) | (
np.array(imgsum) <= bad_pixel_low_threshold))[0]
#bad_frame_list1 = np.where( np.array(imgsum) > bad_pixel_threshold )[0]
#bad_frame_list2 = np.where( np.array(imgsum) < bad_pixel_low_threshold )[0]
#bad_frame_list = np.unique( np.concatenate( [bad_frame_list1, bad_frame_list2]) )
if len(bad_frame_list):
print('Bad frame list are: %s' % bad_frame_list)
else:
print('No bad frames are involved.')
if with_pickle:
pkl.dump([mask, avg_img, imgsum, bad_frame_list],
open(filename + '.pkl', 'wb'))
return mask, avg_img, imgsum, bad_frame_list
def segment_compress_eigerdata(images,
mask,
md,
filename,
bad_pixel_threshold=1e15,
hot_pixel_threshold=2**30,
bad_pixel_low_threshold=0,
nobytes=4,
bins=1,
N1=None,
N2=None,
dtypes='images',
reverse=True):
'''
Create a compressed eiger data without header, this function is for parallel compress
for parallel compress don't pass any non-scalar parameters
'''
if dtypes == 'uid':
uid = md['uid'] #images
detector = get_detector(db[uid])
images = load_data(uid, detector, reverse=reverse)[N1:N2]
print(N1, N2)
Nimg_ = len(images)
M, N = images[0].shape
avg_img = np.zeros([M, N], dtype=np.float)
Nopix = float(avg_img.size)
n = 0
good_count = 0
#frac = 0.0
if nobytes == 2:
dtype = np.int16
elif nobytes == 4:
dtype = np.int32
elif nobytes == 8:
dtype = np.float64
else:
print(
"Wrong type of nobytes, only support 2 [np.int16] or 4 [np.int32]")
dtype = np.int32
#Nimg = Nimg_//bins
Nimg = int(np.ceil(Nimg_ / bins))
time_edge = np.array(
create_time_slice(N=Nimg_, slice_num=Nimg, slice_width=bins))
#print( time_edge, Nimg_, Nimg, bins, N1, N2 )
imgsum = np.zeros(Nimg)
if bins != 1:
print('The frames will be binned by %s' % bins)
fp = open(filename, 'wb')
for n in range(Nimg):
t1, t2 = time_edge[n]
if bins != 1:
img = np.array(np.average(images[t1:t2], axis=0),
dtype=np.float64) #dtype=np.int32)
else:
img = np.array(images[t1], dtype=np.int32)
mask &= img < hot_pixel_threshold
p = np.where(
(np.ravel(img) > 0) * np.ravel(mask))[0] #don't use masked data
v = np.ravel(np.array(img, dtype=dtype))[p]
dlen = len(p)
imgsum[n] = v.sum()
if (dlen == 0) or (imgsum[n] > bad_pixel_threshold) or (
imgsum[n] <= bad_pixel_low_threshold):
dlen = 0
fp.write(struct.pack('@I', dlen))
else:
np.ravel(avg_img)[p] += v
good_count += 1
fp.write(struct.pack('@I', dlen))
fp.write(struct.pack('@{}i'.format(dlen), *p))
if bins == 1:
fp.write(
struct.pack('@{}{}'.format(dlen, 'ih'[nobytes == 2]), *v))
else:
fp.write(
struct.pack('@{}{}'.format(dlen, 'dd'[nobytes == 2]),
*v)) #n +=1
del p, v, img
fp.flush()
fp.close()
avg_img /= good_count
bad_frame_list = (np.array(imgsum) > bad_pixel_threshold) | (
np.array(imgsum) <= bad_pixel_low_threshold)
sys.stdout.write('#')
sys.stdout.flush()
#del images, mask, avg_img, imgsum, bad_frame_list
#print( 'Should release memory here')
return mask, avg_img, imgsum, bad_frame_list
def para_compress_eigerdata(images,
mask,
md,
filename,
num_sub=100,
bad_pixel_threshold=1e15,
hot_pixel_threshold=2**30,
bad_pixel_low_threshold=0,
nobytes=4,
bins=1,
dtypes='uid',
reverse=True,
num_max_para_process=500,
cpu_core_number=72,
with_pickle=True):
if dtypes == 'uid':
uid = md['uid'] #images
detector = get_detector(db[uid])
images_ = load_data(uid, detector, reverse=reverse)[:100]
N = len(images_)
else:
N = len(images)
#print( N)
N = int(np.ceil(N / bins))
Nf = int(np.ceil(N / num_sub))
if Nf > cpu_core_number:
print(
"The process number is larger than %s (XF11ID server core number)"
% cpu_core_number)
num_sub_old = num_sub
num_sub = int(np.ceil(N / cpu_core_number))
Nf = int(np.ceil(N / num_sub))
print("The sub compressed file number was changed from %s to %s" %
(num_sub_old, num_sub))
create_compress_header(md, filename + '-header', nobytes, bins)
#print( 'done for header here')
results = para_segment_compress_eigerdata(
images=images,
mask=mask,
md=md,
filename=filename,
num_sub=num_sub,
bad_pixel_threshold=bad_pixel_threshold,
hot_pixel_threshold=hot_pixel_threshold,
bad_pixel_low_threshold=bad_pixel_low_threshold,
nobytes=nobytes,
bins=bins,
dtypes=dtypes,
num_max_para_process=num_max_para_process)
res_ = np.array([results[k].get() for k in list(sorted(results.keys()))])
imgsum = np.zeros(N)
bad_frame_list = np.zeros(N, dtype=bool)
good_count = 1
for i in range(Nf):
mask_, avg_img_, imgsum_, bad_frame_list_ = res_[i]
imgsum[i * num_sub:(i + 1) * num_sub] = imgsum_
bad_frame_list[i * num_sub:(i + 1) * num_sub] = bad_frame_list_
if i == 0:
mask = mask_
avg_img = np.zeros_like(avg_img_)
else:
mask *= mask_
if not np.sum(np.isnan(avg_img_)):
avg_img += avg_img_
good_count += 1
bad_frame_list = np.where(bad_frame_list)[0]
avg_img /= good_count
if len(bad_frame_list):
print('Bad frame list are: %s' % bad_frame_list)
else:
print('No bad frames are involved.')
print('Combining the seperated compressed files together...')
combine_compressed(filename, Nf, del_old=True)
del results
del res_
if with_pickle:
pkl.dump([mask, avg_img, imgsum, bad_frame_list],
open(filename + '.pkl', 'wb'))
return mask, avg_img, imgsum, bad_frame_list
def get_each_frame_intensityc(FD,
sampling=1,
bad_pixel_threshold=1e10,
bad_pixel_low_threshold=0,
hot_pixel_threshold=2**30,
plot_=False,
bad_frame_list=None,
save=False,
*argv,
**kwargs):
'''Get the total intensity of each frame by sampling every N frames
Also get bad_frame_list by check whether above bad_pixel_threshold
Usuage:
imgsum, bad_frame_list = get_each_frame_intensity(good_series ,sampling = 1000,
bad_pixel_threshold=1e10, plot_ = True)
'''
#print ( argv, kwargs )
#mask &= img < hot_pixel_threshold
imgsum = np.zeros(int((FD.end - FD.beg) / sampling))
n = 0
for i in tqdm(range(FD.beg, FD.end, sampling),
desc='Get each frame intensity'):
(p, v) = FD.rdrawframe(i)
if len(p) > 0:
imgsum[n] = np.sum(v)
n += 1
if plot_:
uid = 'uid'
if 'uid' in kwargs.keys():
uid = kwargs['uid']
fig, ax = plt.subplots()
ax.plot(imgsum, 'bo')
ax.set_title('uid= %s--imgsum' % uid)
ax.set_xlabel('Frame_bin_%s' % sampling)
ax.set_ylabel('Total_Intensity')
if save:
#dt =datetime.now()
#CurTime = '%s%02d%02d-%02d%02d-' % (dt.year, dt.month, dt.day,dt.hour,dt.minute)
path = kwargs['path']
if 'uid' in kwargs:
uid = kwargs['uid']
else:
uid = 'uid'
#fp = path + "uid= %s--Waterfall-"%uid + CurTime + '.png'
fp = path + "uid=%s--imgsum-" % uid + '.png'
fig.savefig(fp, dpi=fig.dpi)
plt.show()
bad_frame_list_ = np.where((np.array(imgsum) > bad_pixel_threshold) | (
np.array(imgsum) <= bad_pixel_low_threshold))[0] + FD.beg
if bad_frame_list is not None:
bad_frame_list = np.unique(
np.concatenate([bad_frame_list, bad_frame_list_]))
else:
bad_frame_list = bad_frame_list_
if len(bad_frame_list):
print('Bad frame list length is: %s' % len(bad_frame_list))
else:
print('No bad frames are involved.')
return imgsum, bad_frame_list
def mean_intensityc(FD,
labeled_array,
sampling=1,
index=None,
multi_cor=False):
"""Compute the mean intensity for each ROI in the compressed file (FD), support parallel computation
Parameters
----------
FD: Multifile class
compressed file
labeled_array : array
labeled array; 0 is background.
Each ROI is represented by a nonzero integer. It is not required that
the ROI labels are contiguous
index : int, list, optional
The ROI's to use. If None, this function will extract averages for all
ROIs
Returns
-------
mean_intensity : array
The mean intensity of each ROI for all `images`
Dimensions:
len(mean_intensity) == len(index)
len(mean_intensity[0]) == len(images)
index : list
The labels for each element of the `mean_intensity` list
"""
qind, pixelist = roi.extract_label_indices(labeled_array)
sx, sy = (FD.rdframe(FD.beg)).shape
if labeled_array.shape != (sx, sy):
raise ValueError(
" `image` shape (%d, %d) in FD is not equal to the labeled_array shape (%d, %d)"
% (sx, sy, labeled_array.shape[0], labeled_array.shape[1]))
# handle various input for `index`
if index is None:
index = list(np.unique(labeled_array))
index.remove(0)
else:
try:
len(index)
except TypeError:
index = [index]
index = np.array(index)
#print ('here')
good_ind = np.zeros(max(qind), dtype=np.int32)
good_ind[index - 1] = np.arange(len(index)) + 1
w = np.where(good_ind[qind - 1])[0]
qind = good_ind[qind[w] - 1]
pixelist = pixelist[w]
# pre-allocate an array for performance
# might be able to use list comprehension to make this faster
mean_intensity = np.zeros([int((FD.end - FD.beg) / sampling), len(index)])
#fra_pix = np.zeros_like( pixelist, dtype=np.float64)
timg = np.zeros(FD.md['ncols'] * FD.md['nrows'], dtype=np.int32)
timg[pixelist] = np.arange(1, len(pixelist) + 1)
#maxqind = max(qind)
norm = np.bincount(qind)[1:]
n = 0
#for i in tqdm(range( FD.beg , FD.end )):
if not multi_cor:
for i in tqdm(range(FD.beg, FD.end, sampling),
desc='Get ROI intensity of each frame'):
(p, v) = FD.rdrawframe(i)
w = np.where(timg[p])[0]
pxlist = timg[p[w]] - 1
mean_intensity[n] = np.bincount(qind[pxlist],
weights=v[w],
minlength=len(index) + 1)[1:]
n += 1
else:
ring_masks = [
np.array(labeled_array == i, dtype=np.int64)
for i in np.unique(labeled_array)[1:]
]
inputs = range(len(ring_masks))
go_through_FD(FD)
pool = Pool(processes=len(inputs))
print('Starting assign the tasks...')
results = {}
for i in tqdm(inputs):
results[i] = apply_async(pool, _get_mean_intensity_one_q,
(FD, sampling, ring_masks[i]))
pool.close()
print('Starting running the tasks...')
res = [results[k].get() for k in tqdm(list(sorted(results.keys())))]
#return res
for i in inputs:
mean_intensity[:, i] = res[i]
print('ROI mean_intensit calculation is DONE!')
del results
del res
mean_intensity /= norm
return mean_intensity, index
