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io.py
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io.py
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import os, datetime, gc, warnings, glob
from natsort import natsorted
import numpy as np
import cv2
import tifffile
from . import utils, plot, transforms
try:
from PyQt5 import QtGui, QtCore, Qt, QtWidgets
GUI = True
except:
GUI = False
try:
import matplotlib.pyplot as plt
MATPLOTLIB = True
except:
MATPLOTLIB = False
print('matplotlib not installed')
try:
from google.cloud import storage
SERVER_UPLOAD = True
except:
SERVER_UPLOAD = False
def outlines_to_text(base, outlines):
with open(base + '_cp_outlines.txt', 'w') as f:
for o in outlines:
xy = list(o.flatten())
xy_str = ','.join(map(str, xy))
f.write(xy_str)
f.write('\n')
def imread(filename):
ext = os.path.splitext(filename)[-1]
if ext== '.tif' or ext=='tiff':
img = tifffile.imread(filename)
return img
else:
try:
img = cv2.imread(filename, -1)#cv2.LOAD_IMAGE_ANYDEPTH)
if img.ndim > 2:
img = img[..., [2,1,0]]
return img
except Exception as e:
print('ERROR: could not read file, %s'%e)
return None
def imsave(filename, arr):
ext = os.path.splitext(filename)[-1]
if ext== '.tif' or ext=='tiff':
tifffile.imsave(filename, arr)
else:
cv2.imwrite(filename, arr)
def get_image_files(folder, mask_filter, imf=None):
mask_filters = ['_cp_masks', '_cp_output', '_flows', mask_filter]
image_names = []
if imf is None:
imf = ''
image_names.extend(glob.glob(folder + '/*%s.png'%imf))
image_names.extend(glob.glob(folder + '/*%s.jpg'%imf))
image_names.extend(glob.glob(folder + '/*%s.jpeg'%imf))
image_names.extend(glob.glob(folder + '/*%s.tif'%imf))
image_names.extend(glob.glob(folder + '/*%s.tiff'%imf))
image_names = natsorted(image_names)
imn = []
for im in image_names:
imfile = os.path.splitext(im)[0]
igood = all([(len(imfile) > len(mask_filter) and imfile[-len(mask_filter):] != mask_filter) or len(imfile) < len(mask_filter)
for mask_filter in mask_filters])
if len(imf)>0:
igood &= imfile[-len(imf):]==imf
if igood:
imn.append(im)
image_names = imn
return image_names
def get_label_files(image_names, mask_filter, imf=None):
nimg = len(image_names)
label_names0 = [os.path.splitext(image_names[n])[0] for n in range(nimg)]
if imf is not None and len(imf) > 0:
label_names = [label_names0[n][:-len(imf)] for n in range(nimg)]
else:
label_names = label_names0
# check for flows
if os.path.exists(label_names0[0] + '_flows.tif'):
flow_names = [label_names0[n] + '_flows.tif' for n in range(nimg)]
else:
flow_names = [label_names[n] + '_flows.tif' for n in range(nimg)]
if not all([os.path.exists(flow) for flow in flow_names]):
flow_names = None
# check for masks
if os.path.exists(label_names[0] + mask_filter + '.tif'):
label_names = [label_names[n] + mask_filter + '.tif' for n in range(nimg)]
elif os.path.exists(label_names[0] + mask_filter + '.png'):
label_names = [label_names[n] + mask_filter + '.png' for n in range(nimg)]
else:
raise ValueError('labels not provided with correct --mask_filter')
if not all([os.path.exists(label) for label in label_names]):
raise ValueError('labels not provided for all images in train and/or test set')
return label_names, flow_names
def load_train_test_data(train_dir, test_dir=None, image_filter=None, mask_filter='_masks', unet=False):
image_names = get_image_files(train_dir, mask_filter, imf=image_filter)
nimg = len(image_names)
images = [imread(image_names[n]) for n in range(nimg)]
# training data
label_names, flow_names = get_label_files(image_names, mask_filter, imf=image_filter)
nimg = len(image_names)
labels = [imread(label_names[n]) for n in range(nimg)]
if flow_names is not None and not unet:
for n in range(nimg):
flows = imread(flow_names[n])
if flows.shape[0]<4:
labels[n] = np.concatenate((labels[n][np.newaxis,:,:], flows), axis=0)
else:
labels[n] = flows
# testing data
test_images, test_labels, image_names_test = None, None, None
if test_dir is not None:
image_names_test = get_image_files(test_dir, mask_filter, imf=image_filter)
label_names_test, flow_names_test = get_label_files(image_names_test, mask_filter, imf=image_filter)
nimg = len(image_names_test)
test_images = [imread(image_names_test[n]) for n in range(nimg)]
test_labels = [imread(label_names_test[n]) for n in range(nimg)]
if flow_names_test is not None and not unet:
for n in range(nimg):
flows = imread(flow_names_test[n])
if flows.shape[0]<4:
test_labels[n] = np.concatenate((test_labels[n][np.newaxis,:,:], flows), axis=0)
else:
test_labels[n] = flows
return images, labels, image_names, test_images, test_labels, image_names_test
def masks_flows_to_seg(images, masks, flows, diams, file_names, channels=None):
""" save output of model eval to be loaded in GUI
can be list output (run on multiple images) or single output (run on single image)
saved to file_names[k]+'_seg.npy'
Parameters
-------------
images: (list of) 2D or 3D arrays
images input into cellpose
masks: (list of) 2D arrays, int
masks output from Cellpose.eval, where 0=NO masks; 1,2,...=mask labels
flows: (list of) list of ND arrays
flows output from Cellpose.eval
diams: float array
diameters used to run Cellpose
file_names: (list of) str
names of files of images
channels: list of int (optional, default None)
channels used to run Cellpose
"""
if channels is None:
channels = [0,0]
if isinstance(masks, list):
for k, [image, mask, flow, diam, file_name] in enumerate(zip(images, masks, flows, diams, file_names)):
channels_img = channels
if channels_img is not None and len(channels) > 2:
channels_img = channels[k]
masks_flows_to_seg(image, mask, flow, diam, file_name, channels_img)
return
if len(channels)==1:
channels = channels[0]
flowi = []
if flows[0].ndim==3:
flowi.append(flows[0][np.newaxis,...])
else:
flowi.append(flows[0])
if flows[0].ndim==3:
flowi.append((np.clip(transforms.normalize99(flows[2]),0,1) * 255).astype(np.uint8)[np.newaxis,...])
flowi.append(np.zeros(flows[0].shape, dtype=np.uint8))
flowi[-1] = flowi[-1][np.newaxis,...]
else:
flowi.append((np.clip(transforms.normalize99(flows[2]),0,1) * 255).astype(np.uint8))
flowi.append((flows[1][0]/10 * 127 + 127).astype(np.uint8))
if len(flows)>2:
flowi.append(flows[3])
flowi.append(np.concatenate((flows[1], flows[2][np.newaxis,...]), axis=0))
outlines = masks * utils.masks_to_outlines(masks)
base = os.path.splitext(file_names)[0]
if masks.ndim==3:
np.save(base+ '_seg.npy',
{'outlines': outlines.astype(np.uint16) if outlines.max()<2**16-1 else outlines.astype(np.uint32),
'masks': masks.astype(np.uint16) if outlines.max()<2**16-1 else masks.astype(np.uint32),
'chan_choose': channels,
'img': images,
'ismanual': np.zeros(masks.max(), np.bool),
'filename': file_names,
'flows': flowi,
'est_diam': diams})
else:
if images.shape[0]<8:
np.transpose(images, (1,2,0))
np.save(base+ '_seg.npy',
{'outlines': outlines.astype(np.uint16) if outlines.max()<2**16-1 else outlines.astype(np.uint32),
'masks': masks.astype(np.uint16) if masks.max()<2**16-1 else masks.astype(np.uint32),
'chan_choose': channels,
'ismanual': np.zeros(masks.max(), np.bool),
'filename': file_names,
'flows': flowi,
'est_diam': diams})
def save_to_png(images, masks, flows, file_names):
""" deprecated (runs io.save_masks with png=True)
does not work for 3D images
"""
save_masks(images, masks, flows, file_names, png=True)
def save_masks(images, masks, flows, file_names, png=True, tif=False):
""" save masks + nicely plotted segmentation image to png and/or tiff
if png, masks[k] for images[k] are saved to file_names[k]+'_cp_masks.png'
if tif, masks[k] for images[k] are saved to file_names[k]+'_cp_masks.tif'
if png and matplotlib installed, full segmentation figure is saved to file_names[k]+'_cp.png'
only tif option works for 3D data
Parameters
-------------
images: (list of) 2D, 3D or 4D arrays
images input into cellpose
masks: (list of) 2D arrays, int
masks output from Cellpose.eval, where 0=NO masks; 1,2,...=mask labels
flows: (list of) list of ND arrays
flows output from Cellpose.eval
file_names: (list of) str
names of files of images
"""
if isinstance(masks, list):
for image, mask, flow, file_name in zip(images, masks, flows, file_names):
save_masks(image, mask, flow, file_name, png=png, tif=tif)
return
if masks.ndim > 2 and not tif:
raise ValueError('cannot save 3D outputs as PNG, use tif option instead')
base = os.path.splitext(file_names)[0]
exts = []
if masks.ndim > 2 or masks.max()>2**16-1:
png = False
tif = True
if png:
exts.append('.png')
if tif:
exts.append('.tif')
# convert to uint16 if possible so can save as PNG if needed
masks = masks.astype(np.uint16) if masks.max()<2**16-1 else masks.astype(np.uint32)
# save masks
with warnings.catch_warnings():
warnings.simplefilter("ignore")
for ext in exts:
imsave(base + '_cp_masks' + ext, masks)
if png and MATPLOTLIB and not min(images.shape) > 3:
img = images.copy()
if img.ndim<3:
img = img[:,:,np.newaxis]
elif img.shape[0]<8:
np.transpose(img, (1,2,0))
fig = plt.figure(figsize=(12,3))
# can save images (set save_dir=None if not)
plot.show_segmentation(fig, img, masks, flows[0])
fig.savefig(base + '_cp_output.png', dpi=300)
plt.close(fig)
if masks.ndim < 3:
outlines = utils.outlines_list(masks)
outlines_to_text(base, outlines)
def save_server(parent=None, filename=None):
""" Uploads a *_seg.npy file to the bucket.
Parameters
----------------
parent: PyQt.MainWindow (optional, default None)
GUI window to grab file info from
filename: str (optional, default None)
if no GUI, send this file to server
"""
if parent is not None:
q = QtGui.QMessageBox.question(
parent,
"Send to server",
"Are you sure? Only send complete and fully manually segmented data.\n (do not send partially automated segmentations)",
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No
)
if q != QtGui.QMessageBox.Yes:
return
else:
filename = parent.filename
if filename is not None:
os.environ['GOOGLE_APPLICATION_CREDENTIALS'] = os.path.join(os.path.dirname(os.path.realpath(__file__)),
'key/cellpose-data-writer.json')
bucket_name = 'cellpose_data'
base = os.path.splitext(filename)[0]
source_file_name = base + '_seg.npy'
print(source_file_name)
time = datetime.datetime.now().strftime("%Y_%m_%d_%H_%M_%S.%f")
filestring = time + '.npy'
print(filestring)
destination_blob_name = filestring
storage_client = storage.Client()
bucket = storage_client.bucket(bucket_name)
blob = bucket.blob(destination_blob_name)
blob.upload_from_filename(source_file_name)
print(
"File {} uploaded to {}.".format(
source_file_name, destination_blob_name
)
)
def _load_image(parent, filename=None):
""" load image with filename; if None, open QFileDialog """
if filename is None:
name = QtGui.QFileDialog.getOpenFileName(
parent, "Load image"
)
filename = name[0]
manual_file = os.path.splitext(filename)[0]+'_seg.npy'
if os.path.isfile(manual_file):
print(manual_file)
_load_seg(parent, manual_file, image=imread(filename), image_file=filename)
return
elif os.path.isfile(os.path.splitext(filename)[0]+'_manual.npy'):
manual_file = os.path.splitext(filename)[0]+'_manual.npy'
_load_seg(parent, manual_file, image=imread(filename), image_file=filename)
return
try:
image = imread(filename)
image.shape
parent.loaded = True
except:
print('images not compatible')
if parent.loaded:
parent.reset()
parent.filename = filename
print(filename)
filename = os.path.split(parent.filename)[-1]
_initialize_images(parent, image, resize=parent.resize, X2=0)
parent.clear_all()
parent.loaded = True
parent.enable_buttons()
parent.threshslider.setEnabled(False)
parent.probslider.setEnabled(False)
def _initialize_images(parent, image, resize, X2):
""" format image for GUI """
parent.onechan=False
if image.ndim > 3:
# make tiff Z x channels x W x H
if image.shape[0]<4:
# tiff is channels x Z x W x H
image = np.transpose(image, (1,0,2,3))
elif image.shape[-1]<4:
# tiff is Z x W x H x channels
image = np.transpose(image, (0,3,1,2))
# fill in with blank channels to make 3 channels
if image.shape[1] < 3:
shape = image.shape
image = np.concatenate((image,
np.zeros((shape[0], 3-shape[1], shape[2], shape[3]), dtype=np.uint8)), axis=1)
if 3-shape[1]>1:
parent.onechan=True
image = np.transpose(image, (0,2,3,1))
elif image.ndim==3:
if image.shape[0] < 5:
image = np.transpose(image, (1,2,0))
if image.shape[-1] < 3:
shape = image.shape
image = np.concatenate((image,
np.zeros((shape[0], shape[1], 3-shape[2]),
dtype=type(image[0,0,0]))), axis=-1)
if 3-shape[2]>1:
parent.onechan=True
image = image[np.newaxis,...]
elif image.shape[-1]<5 and image.shape[-1]>2:
image = image[:,:,:3]
image = image[np.newaxis,...]
else:
image = image[np.newaxis,...]
parent.stack = image
parent.NZ = len(parent.stack)
parent.scroll.setMaximum(parent.NZ-1)
if parent.stack.max()>255 or parent.stack.min()<0.0 or parent.stack.max()<=50.0:
parent.stack = parent.stack.astype(np.float32)
parent.stack -= parent.stack.min()
parent.stack /= parent.stack.max()
parent.stack *= 255
del image
gc.collect()
parent.stack = list(parent.stack)
for k,img in enumerate(parent.stack):
# if grayscale make 3D
if resize != -1:
img = transforms._image_resizer(img, resize=resize, to_uint8=False)
if img.ndim==2:
img = np.tile(img[:,:,np.newaxis], (1,1,3))
parent.onechan=True
if X2!=0:
img = transforms._X2zoom(img, X2=X2)
parent.stack[k] = img
parent.imask=0
print(parent.NZ, parent.stack[0].shape)
parent.Ly, parent.Lx = img.shape[0], img.shape[1]
parent.stack = np.array(parent.stack)
parent.layers = 0*np.ones((parent.NZ,parent.Ly,parent.Lx,4), np.uint8)
if parent.autobtn.isChecked() or len(parent.saturation)!=parent.NZ:
parent.compute_saturation()
parent.compute_scale()
parent.currentZ = int(np.floor(parent.NZ/2))
parent.scroll.setValue(parent.currentZ)
parent.zpos.setText(str(parent.currentZ))
def _load_seg(parent, filename=None, image=None, image_file=None):
""" load *_seg.npy with filename; if None, open QFileDialog """
if filename is None:
name = QtGui.QFileDialog.getOpenFileName(
parent, "Load labelled data", filter="*.npy"
)
filename = name[0]
try:
dat = np.load(filename, allow_pickle=True).item()
dat['outlines']
parent.loaded = True
except:
parent.loaded = False
print('not NPY')
return
parent.reset()
if image is None:
found_image = False
if 'filename' in dat:
parent.filename = dat['filename']
if os.path.isfile(parent.filename):
parent.filename = dat['filename']
found_image = True
else:
imgname = os.path.split(parent.filename)[1]
root = os.path.split(filename)[0]
parent.filename = root+'/'+imgname
if os.path.isfile(parent.filename):
found_image = True
if found_image:
try:
image = imread(parent.filename)
except:
parent.loaded = False
found_image = False
print('ERROR: cannot find image file, loading from npy')
if not found_image:
parent.filename = filename[:-11]
if 'img' in dat:
image = dat['img']
else:
print('ERROR: no image file found and no image in npy')
return
else:
parent.filename = image_file
print(parent.filename)
if 'X2' in dat:
parent.X2 = dat['X2']
else:
parent.X2 = 0
if 'resize' in dat:
parent.resize = dat['resize']
elif 'img' in dat:
if max(image.shape) > max(dat['img'].shape):
parent.resize = max(dat['img'].shape)
else:
parent.resize = -1
_initialize_images(parent, image, resize=parent.resize, X2=parent.X2)
if 'chan_choose' in dat:
parent.ChannelChoose[0].setCurrentIndex(dat['chan_choose'][0])
parent.ChannelChoose[1].setCurrentIndex(dat['chan_choose'][1])
if 'outlines' in dat:
if isinstance(dat['outlines'], list):
# old way of saving files
dat['outlines'] = dat['outlines'][::-1]
for k, outline in enumerate(dat['outlines']):
if 'colors' in dat:
color = dat['colors'][k]
else:
col_rand = np.random.randint(1000)
color = parent.colormap[col_rand,:3]
median = parent.add_mask(points=outline, color=color)
if median is not None:
parent.cellcolors.append(color)
parent.ncells+=1
else:
if dat['masks'].ndim==2:
dat['masks'] = dat['masks'][np.newaxis,:,:]
dat['outlines'] = dat['outlines'][np.newaxis,:,:]
if dat['masks'].min()==-1:
dat['masks'] += 1
dat['outlines'] += 1
if 'colors' in dat:
colors = dat['colors']
else:
col_rand = np.random.randint(0, 1000, (dat['masks'].max(),))
colors = parent.colormap[col_rand,:3]
parent.cellpix = dat['masks']
parent.outpix = dat['outlines']
parent.cellcolors.extend(colors)
parent.ncells = parent.cellpix.max()
parent.draw_masks()
if 'est_diam' in dat:
parent.Diameter.setText('%0.1f'%dat['est_diam'])
parent.diameter = dat['est_diam']
parent.compute_scale()
if parent.masksOn or parent.outlinesOn and not (parent.masksOn and parent.outlinesOn):
parent.redraw_masks(masks=parent.masksOn, outlines=parent.outlinesOn)
if 'zdraw' in dat:
parent.zdraw = dat['zdraw']
else:
parent.zdraw = [None for n in range(parent.ncells)]
parent.loaded = True
print('%d masks found'%(parent.ncells))
else:
parent.clear_all()
parent.ismanual = np.zeros(parent.ncells, np.bool)
if 'ismanual' in dat:
if len(dat['ismanual']) == parent.ncells:
parent.ismanual = dat['ismanual']
if 'current_channel' in dat:
parent.color = (dat['current_channel']+2)%5
parent.RGBDropDown.setCurrentIndex(parent.color)
if 'flows' in dat:
parent.flows = dat['flows']
try:
print(parent.flows[0].shape)
if parent.NZ==1:
parent.threshslider.setEnabled(True)
parent.probslider.setEnabled(True)
else:
parent.threshslider.setEnabled(False)
parent.probslider.setEnabled(False)
except:
try:
if len(parent.flows[0])>0:
parent.flows = parent.flows[0]
except:
parent.flows = [[],[],[],[],[[]]]
parent.threshslider.setEnabled(False)
parent.probslider.setEnabled(False)
parent.enable_buttons()
del dat
gc.collect()
def _load_masks(parent, filename=None):
""" load zeros-based masks (0=no cell, 1=cell 1, ...) """
if filename is None:
name = QtGui.QFileDialog.getOpenFileName(
parent, "Load masks (PNG or TIFF)"
)
filename = name[0]
masks = imread(filename)
outlines = None
if masks.ndim>3:
# Z x nchannels x Ly x Lx
if masks.shape[-1]>5:
parent.flows = list(np.transpose(masks[:,:,:,2:], (3,0,1,2)))
outlines = masks[...,1]
masks = masks[...,0]
else:
parent.flows = list(np.transpose(masks[:,:,:,1:], (3,0,1,2)))
masks = masks[...,0]
elif masks.ndim==3:
if masks.shape[-1]<5:
masks = masks[np.newaxis,:,:,0]
elif masks.ndim<3:
masks = masks[np.newaxis,:,:]
# masks should be Z x Ly x Lx
if masks.shape[0]!=parent.NZ:
print('ERROR: masks are not same depth (number of planes) as image stack')
return
print('%d masks found'%(len(np.unique(masks))-1))
_masks_to_gui(parent, masks, outlines)
parent.update_plot()
def _masks_to_gui(parent, masks, outlines=None):
""" masks loaded into GUI """
# get unique values
shape = masks.shape
_, masks = np.unique(masks, return_inverse=True)
masks = np.reshape(masks, shape)
masks = masks.astype(np.uint16) if masks.max()<2**16-1 else masks.astype(np.uint32)
parent.cellpix = masks
# get outlines
if outlines is None:
parent.outpix = np.zeros_like(masks)
for z in range(parent.NZ):
outlines = utils.masks_to_outlines(masks[z])
parent.outpix[z] = outlines * masks[z]
if z%50==0:
print('plane %d outlines processed'%z)
else:
parent.outpix = outlines
shape = parent.outpix.shape
_,parent.outpix = np.unique(parent.outpix, return_inverse=True)
parent.outpix = np.reshape(parent.outpix, shape)
parent.ncells = parent.cellpix.max()
colors = parent.colormap[np.random.randint(0,1000,size=parent.ncells), :3]
parent.cellcolors = list(np.concatenate((np.array([[255,255,255]]), colors), axis=0).astype(np.uint8))
parent.draw_masks()
if parent.ncells>0:
parent.toggle_mask_ops()
parent.ismanual = np.zeros(parent.ncells, np.bool)
parent.zdraw = list(-1*np.ones(parent.ncells, np.int16))
parent.update_plot()
def _save_png(parent):
""" save masks to png or tiff (if 3D) """
filename = parent.filename
base = os.path.splitext(filename)[0]
if parent.NZ==1:
print('saving 2D masks to png')
imsave(base + '_cp_masks.png', parent.cellpix[0])
else:
print('saving 3D masks to tiff')
imsave(base + '_cp_masks.tif', parent.cellpix)
def _save_outlines(parent):
filename = parent.filename
base = os.path.splitext(filename)[0]
if parent.NZ==1:
print('saving 2D outlines to text file, see docs for info to load into ImageJ')
outlines = utils.outlines_list(parent.cellpix[0])
outlines_to_text(base, outlines)
else:
print('ERROR: cannot save 3D outlines')
def _save_sets(parent):
""" save masks to *_seg.npy """
filename = parent.filename
base = os.path.splitext(filename)[0]
if parent.NZ > 1 and parent.is_stack:
np.save(base + '_seg.npy',
{'outlines': parent.outpix,
'colors': parent.cellcolors[1:],
'masks': parent.cellpix,
'current_channel': (parent.color-2)%5,
'filename': parent.filename,
'flows': parent.flows,
'zdraw': parent.zdraw})
else:
image = parent.chanchoose(parent.stack[parent.currentZ].copy())
if image.ndim < 4:
image = image[np.newaxis,...]
np.save(base + '_seg.npy',
{'outlines': parent.outpix.squeeze(),
'colors': parent.cellcolors[1:],
'masks': parent.cellpix.squeeze(),
'chan_choose': [parent.ChannelChoose[0].currentIndex(),
parent.ChannelChoose[1].currentIndex()],
'img': image.squeeze(),
'ismanual': parent.ismanual,
'X2': parent.X2,
'filename': parent.filename,
'flows': parent.flows})
#print(parent.point_sets)
print('--- %d ROIs saved chan1 %s, chan2 %s'%(parent.ncells,
parent.ChannelChoose[0].currentText(),
parent.ChannelChoose[1].currentText()))