transfercolor via lab converter now implemented by tensorflow-cpu, which is x2 faster than skimage.

We cannot use GPU for lab converter in converter multiprocesses, because almost all VRAM ate by model process, so even 300Mb free VRAM not enough for tensorflow lab converter.
Removed skimage dependency.
Refactorings.

gpufmkmgr/gpufmkmgr.py

@@ -5,6 +5,8 @@ import contextlib
 from utils import std_utils
 from .pynvml import *
 
+
+        
 dlib_module = None
 def import_dlib(device_idx):
     global dlib_module
@@ -22,18 +24,26 @@ keras_module = None
 keras_contrib_module = None
 keras_vggface_module = None
 
+def set_prefer_GPUConfig(gpu_config):
+    global prefer_GPUConfig
+    prefer_GPUConfig = gpu_config
+    
 def get_tf_session():
     global tf_session
     return tf_session
 
-#allow_growth=False for keras model
+def import_tf( gpu_config = None ):
-#allow_growth=True for tf only model
+    global prefer_GPUConfig
-def import_tf( device_idxs_list, allow_growth ):
     global tf_module
     global tf_session
     
+    if gpu_config is None:
+        gpu_config = prefer_GPUConfig
+    else:
+        prefer_GPUConfig = gpu_config
+        
     if tf_module is not None:
-        raise Exception ('Multiple import of tf is not allowed, reorganize your program.')
+        return tf_module
 
     if 'TF_SUPPRESS_STD' in os.environ.keys() and os.environ['TF_SUPPRESS_STD'] == '1':
         suppressor = std_utils.suppress_stdout_stderr().__enter__()
@@ -48,14 +58,18 @@ def import_tf( device_idxs_list, allow_growth ):
     import tensorflow as tf
     tf_module = tf
     
-    visible_device_list = ''
+    if gpu_config.cpu_only:
-    for idx in device_idxs_list: visible_device_list += str(idx) + ','
+        config = tf_module.ConfigProto( device_count = {'GPU': 0} )
-    visible_device_list = visible_device_list[:-1]
+    else:    
+        config = tf_module.ConfigProto()
+        visible_device_list = ''
+        for idx in gpu_config.gpu_idxs: visible_device_list += str(idx) + ','
+        visible_device_list = visible_device_list[:-1]
+        config.gpu_options.visible_device_list=visible_device_list
+        config.gpu_options.force_gpu_compatible = True
+        
+    config.gpu_options.allow_growth = gpu_config.allow_growth
     
-    config = tf_module.ConfigProto()
-    config.gpu_options.allow_growth = allow_growth
-    config.gpu_options.visible_device_list=visible_device_list
-    config.gpu_options.force_gpu_compatible = True
     tf_session = tf_module.Session(config=config)
         
     if suppressor is not None:  
@@ -71,11 +85,15 @@ def finalize_tf():
     tf_session = None
     tf_module = None
 
+def get_keras():
+    global keras_module
+    return keras_module
+    
 def import_keras():
     global keras_module
     
     if keras_module is not None:
-        raise Exception ('Multiple import of keras is not allowed, reorganize your program.')
+        return keras_module
         
     sess = get_tf_session()
     if sess is None:
@@ -242,3 +260,47 @@ def getDeviceName (idx):
         result = nvmlDeviceGetName(nvmlDeviceGetHandleByIndex(idx)).decode()
     nvmlShutdown()
     return result
+    
+    
+class GPUConfig():    
+    force_best_gpu_idx = -1
+    multi_gpu = False
+    force_gpu_idxs = None
+    choose_worst_gpu = False
+    gpu_idxs = []
+    gpu_total_vram_gb = 0
+    allow_growth = True
+    cpu_only = False
+    
+    def __init__ (self, force_best_gpu_idx = -1, 
+                        multi_gpu = False, 
+                        force_gpu_idxs = None, 
+                        choose_worst_gpu = False,
+                        allow_growth = True,
+                        cpu_only = False,
+                        **in_options):
+                        
+        if cpu_only:
+            self.cpu_only = cpu_only
+        else:
+            self.force_best_gpu_idx = force_best_gpu_idx
+            self.multi_gpu = multi_gpu
+            self.force_gpu_idxs = force_gpu_idxs
+            self.choose_worst_gpu = choose_worst_gpu        
+            self.allow_growth = allow_growth
+      
+            gpu_idx = force_best_gpu_idx if (force_best_gpu_idx >= 0 and isValidDeviceIdx(force_best_gpu_idx)) else getBestDeviceIdx() if not choose_worst_gpu else getWorstDeviceIdx()
+
+            if force_gpu_idxs is not None:
+                self.gpu_idxs = [ int(x) for x in force_gpu_idxs.split(',') ]
+            else:
+                if self.multi_gpu:
+                    self.gpu_idxs = getDeviceIdxsEqualModel( gpu_idx )
+                    if len(self.gpu_idxs) <= 1:
+                        self.multi_gpu = False
+                else:
+                    self.gpu_idxs = [gpu_idx]
+            
+            self.gpu_total_vram_gb = getDeviceVRAMTotalGb ( self.gpu_idxs[0] )
+        
+prefer_GPUConfig = GPUConfig()

mainscripts/Converter.py

@@ -64,14 +64,14 @@ from utils.SubprocessorBase import SubprocessorBase
 class ConvertSubprocessor(SubprocessorBase):
 
     #override
-    def __init__(self, converter, input_path_image_paths, output_path, alignments, debug): 
+    def __init__(self, converter, input_path_image_paths, output_path, alignments, debug = False, **in_options): 
         super().__init__('Converter')    
         self.converter = converter
         self.input_path_image_paths = input_path_image_paths
         self.output_path = output_path
         self.alignments = alignments
         self.debug = debug
-        
+        self.in_options = in_options
         self.input_data = self.input_path_image_paths
         self.files_processed = 0
         self.faces_processed = 0
@@ -79,13 +79,18 @@ class ConvertSubprocessor(SubprocessorBase):
     #override
     def process_info_generator(self):
         r = [0] if self.debug else range(multiprocessing.cpu_count())
+        
+        
+
         for i in r:
             yield 'CPU%d' % (i), {}, {'device_idx': i,
                                       'device_name': 'CPU%d' % (i), 
                                       'converter' : self.converter, 
                                       'output_dir' : str(self.output_path), 
                                       'alignments' : self.alignments,
-                                      'debug': self.debug }
+                                      'debug': self.debug,
+                                      'in_options': self.in_options
+                                      }
      
     #override
     def get_no_process_started_message(self):
@@ -118,6 +123,12 @@ class ConvertSubprocessor(SubprocessorBase):
         self.output_path = Path(client_dict['output_dir']) if 'output_dir' in client_dict.keys() else None        
         self.alignments  = client_dict['alignments']
         self.debug       = client_dict['debug']
+        
+        import gpufmkmgr                
+        #model process ate all GPU mem,
+        #so we cannot use GPU for any TF operations in converter processes (for example image_utils.TFLabConverter) 
+        gpufmkmgr.set_prefer_GPUConfig ( gpufmkmgr.GPUConfig (cpu_only=True) )
+        
         return None
 
     #override
@@ -211,7 +222,6 @@ def main (input_dir, output_dir, aligned_dir, model_dir, model_name, **in_option
         model_sq = multiprocessing.Queue()
         model_cq = multiprocessing.Queue()
         model_lock = multiprocessing.Lock()
-        
         model_p = multiprocessing.Process(target=model_process, args=(model_name, model_dir, in_options, model_sq, model_cq))
         model_p.start()
         
@@ -242,12 +252,13 @@ def main (input_dir, output_dir, aligned_dir, model_dir, model_name, **in_option
 
                 alignments[ source_filename_stem ].append ( np.array(d['source_landmarks']) )
         
+        
         files_processed, faces_processed = ConvertSubprocessor ( 
                     converter              = converter.copy_and_set_predictor( model_process_predictor(model_sq,model_cq,model_lock) ), 
                     input_path_image_paths = Path_utils.get_image_paths(input_path), 
                     output_path            = output_path,
                     alignments             = alignments,  
-                    debug                  = debug ).process()
+                    **in_options ).process()
                               
         model_sq.put ( {'op':'close'} )
         model_p.join()

mainscripts/Extractor.py

@@ -241,7 +241,9 @@ class ExtractSubprocessor(SubprocessorBase):
         if self.type == 'rects':
             if self.detector is not None:
                 if self.detector == 'mt':
-                    self.tf = gpufmkmgr.import_tf ([self.device_idx], allow_growth=True)
+                
+                    self.gpu_config = gpufmkmgr.GPUConfig ( force_best_gpu_idx=self.device_idx, allow_growth=True)                
+                    self.tf = gpufmkmgr.import_tf ( self.gpu_config )
                     self.tf_session = gpufmkmgr.get_tf_session()
                     self.keras = gpufmkmgr.import_keras()
                     self.e = facelib.MTCExtractor(self.keras, self.tf, self.tf_session)                            
@@ -251,7 +253,8 @@ class ExtractSubprocessor(SubprocessorBase):
                 self.e.__enter__()
 
         elif self.type == 'landmarks':
-            self.tf = gpufmkmgr.import_tf([self.device_idx], allow_growth=True)
+            self.gpu_config = gpufmkmgr.GPUConfig ( force_best_gpu_idx=self.device_idx, allow_growth=True)                
+            self.tf = gpufmkmgr.import_tf ( self.gpu_config )
             self.tf_session = gpufmkmgr.get_tf_session()
             self.keras = gpufmkmgr.import_keras()
             self.e = facelib.LandmarksExtractor(self.keras)

models/ConverterMasked.py

@@ -39,6 +39,7 @@ class ConverterMasked(ConverterBase):
         self.blur_mask_modifier = blur_mask_modifier
         self.output_face_scale = np.clip(1.0 + output_face_scale_modifier*0.01, 0.5, 1.0)
         self.transfercolor = transfercolor      
+        self.TFLabConverter = None
         self.final_image_color_degrade_power = np.clip (final_image_color_degrade_power, 0, 100)
         self.alpha = alpha
         
@@ -199,14 +200,14 @@ class ConverterMasked(ConverterBase):
                 new_out = cv2.warpAffine( new_out_face_bgr, face_mat, img_size, img_bgr.copy(), cv2.WARP_INVERSE_MAP | cv2.INTER_LANCZOS4, cv2.BORDER_TRANSPARENT )
                 out_img =  np.clip( img_bgr*(1-img_mask_blurry_aaa) + (new_out*img_mask_blurry_aaa) , 0, 1.0 )
                 
-            if self.transfercolor:                                          #making transfer color from original DST image to fake
+            if self.transfercolor:  
-                from skimage import io, color
+                if self.TFLabConverter is None:
-                lab_clr = color.rgb2lab(img_bgr)                            #original DST, converting RGB to LAB color space
+                    self.TFLabConverter = image_utils.TFLabConverter() 
-                lab_bw = color.rgb2lab(out_img)                             #fake, converting RGB to LAB color space
+                    
-                tmp_channel, a_channel, b_channel = cv2.split(lab_clr)      #taking color channel A and B from original dst image
+                img_lab_l, img_lab_a, img_lab_b = np.split ( self.TFLabConverter.bgr2lab (img_bgr), 3, axis=-1 )
-                l_channel, tmp2_channel, tmp3_channel = cv2.split(lab_bw)   #taking lightness channel L from merged fake
+                out_img_lab_l, out_img_lab_a, out_img_lab_b = np.split ( self.TFLabConverter.bgr2lab (out_img), 3, axis=-1 )      
-                img_LAB = cv2.merge((l_channel,a_channel, b_channel))       #merging light and color
+                
-                out_img = color.lab2rgb(img_LAB)                            #converting LAB to RGB 
+                out_img = self.TFLabConverter.lab2bgr ( np.concatenate([out_img_lab_l, img_lab_a, img_lab_b], axis=-1) )
  
             if self.final_image_color_degrade_power != 0:
                 if debug:
@@ -235,3 +236,4 @@ class ConverterMasked(ConverterBase):
             
         return debugs if debug else out_img     
 
+        

models/ModelBase.py

@@ -20,10 +20,6 @@ class ModelBase(object):
     #DONT OVERRIDE
     def __init__(self, model_path, training_data_src_path=None, training_data_dst_path=None,
                         batch_size=0,
-                        multi_gpu = False,
-                        choose_worst_gpu = False,
-                        force_best_gpu_idx = -1,
-                        force_gpu_idxs = None,
                         write_preview_history = False,
                         debug = False, **in_options
                 ):
@@ -70,37 +66,23 @@ class ModelBase(object):
                     for filename in Path_utils.get_image_paths(self.preview_history_path):
                         Path(filename).unlink()    
 
-        self.multi_gpu = multi_gpu
                         
-        gpu_idx = force_best_gpu_idx if (force_best_gpu_idx >= 0 and gpufmkmgr.isValidDeviceIdx(force_best_gpu_idx)) else gpufmkmgr.getBestDeviceIdx() if not choose_worst_gpu else gpufmkmgr.getWorstDeviceIdx()
+        self.gpu_config = gpufmkmgr.GPUConfig(allow_growth=False, **in_options)
-        gpu_total_vram_gb = gpufmkmgr.getDeviceVRAMTotalGb (gpu_idx)
+        self.gpu_total_vram_gb = self.gpu_config.gpu_total_vram_gb
-        is_gpu_low_mem = (gpu_total_vram_gb < 4)
-        
-        self.gpu_total_vram_gb = gpu_total_vram_gb
 
         if self.epoch == 0: 
             #first run         
-            self.options['created_vram_gb'] = gpu_total_vram_gb
+            self.options['created_vram_gb'] = self.gpu_total_vram_gb
-            self.created_vram_gb = gpu_total_vram_gb
+            self.created_vram_gb = self.gpu_total_vram_gb
         else: 
             #not first run        
             if 'created_vram_gb' in self.options.keys():
                 self.created_vram_gb = self.options['created_vram_gb']
             else:
-                self.options['created_vram_gb'] = gpu_total_vram_gb
+                self.options['created_vram_gb'] = self.gpu_total_vram_gb
-                self.created_vram_gb = gpu_total_vram_gb
+                self.created_vram_gb = self.gpu_total_vram_gb
             
-        if force_gpu_idxs is not None:
+        self.tf = gpufmkmgr.import_tf( self.gpu_config )
-            self.gpu_idxs = [ int(x) for x in force_gpu_idxs.split(',') ]
-        else:
-            if self.multi_gpu:
-                self.gpu_idxs = gpufmkmgr.getDeviceIdxsEqualModel( gpu_idx )
-                if len(self.gpu_idxs) <= 1:
-                    self.multi_gpu = False
-            else:
-                self.gpu_idxs = [gpu_idx]
-        
-        self.tf = gpufmkmgr.import_tf(self.gpu_idxs,allow_growth=False)
         self.tf_sess = gpufmkmgr.get_tf_session()
         self.keras = gpufmkmgr.import_keras()
         self.keras_contrib = gpufmkmgr.import_keras_contrib()
@@ -131,12 +113,12 @@ class ModelBase(object):
         print ("==")
         print ("== Options:")
         print ("== |== batch_size : %s " % (self.batch_size) )
-        print ("== |== multi_gpu : %s " % (self.multi_gpu) )
+        print ("== |== multi_gpu : %s " % (self.gpu_config.multi_gpu) )
         for key in self.options.keys():
             print ("== |== %s : %s" % (key, self.options[key]) )        
         
         print ("== Running on:")
-        for idx in self.gpu_idxs:
+        for idx in self.gpu_config.gpu_idxs:
             print ("== |== [%d : %s]" % (idx, gpufmkmgr.getDeviceName(idx)) )
  
         if self.gpu_total_vram_gb == 2:
@@ -188,18 +170,18 @@ class ModelBase(object):
         return ConverterBase(self, **in_options) 
      
     def to_multi_gpu_model_if_possible (self, models_list):
-        if len(self.gpu_idxs) > 1:
+        if len(self.gpu_config.gpu_idxs) > 1:
             #make batch_size to divide on GPU count without remainder
-            self.batch_size = int( self.batch_size / len(self.gpu_idxs) )
+            self.batch_size = int( self.batch_size / len(self.gpu_config.gpu_idxs) )
             if self.batch_size == 0:
                 self.batch_size = 1                
-            self.batch_size *= len(self.gpu_idxs)
+            self.batch_size *= len(self.gpu_config.gpu_idxs)
             
             result = []
             for model in models_list:
                 for i in range( len(model.output_names) ):
                     model.output_names = 'output_%d' % (i)                 
-                result += [ self.keras.utils.multi_gpu_model( model, self.gpu_idxs ) ]    
+                result += [ self.keras.utils.multi_gpu_model( model, self.gpu_config.gpu_idxs ) ]    
                 
             return result                
         else:

requirements-gpu-cuda9-cudnn7.txt

@@ -8,4 +8,3 @@ scikit-image
 dlib==19.10.0
 tqdm
 git+https://www.github.com/keras-team/keras-contrib.git
-skimage

utils/image_utils.py

@@ -273,3 +273,106 @@ def reduce_colors (img_bgr, n_colors):
     img_bgr = cv2.cvtColor( np.array(img_rgb_p, dtype=np.float32) / 255.0, cv2.COLOR_RGB2BGR )
     
     return img_bgr
+    
+    
+class TFLabConverter():
+
+
+
+    def __init__(self,):
+        import gpufmkmgr
+        
+        self.tf_module = gpufmkmgr.import_tf()
+        self.tf_session = gpufmkmgr.get_tf_session()
+        
+        self.bgr_input_tensor = self.tf_module.placeholder("float", [None, None, 3])
+        self.lab_input_tensor = self.tf_module.placeholder("float", [None, None, 3])
+        
+        self.lab_output_tensor = self.rgb_to_lab(self.tf_module, self.bgr_input_tensor)        
+        self.bgr_output_tensor = self.lab_to_rgb(self.tf_module, self.lab_input_tensor)
+        
+        
+    def bgr2lab(self, bgr):    
+        return self.tf_session.run(self.lab_output_tensor, feed_dict={self.bgr_input_tensor: bgr})
+        
+    def lab2bgr(self, lab):    
+        return self.tf_session.run(self.bgr_output_tensor, feed_dict={self.lab_input_tensor: lab})    
+        
+    def rgb_to_lab(self, tf, rgb_input):
+        with tf.name_scope("rgb_to_lab"):
+            srgb_pixels = tf.reshape(rgb_input, [-1, 3])
+
+            with tf.name_scope("srgb_to_xyz"):
+                linear_mask = tf.cast(srgb_pixels <= 0.04045, dtype=tf.float32)
+                exponential_mask = tf.cast(srgb_pixels > 0.04045, dtype=tf.float32)
+                rgb_pixels = (srgb_pixels / 12.92 * linear_mask) + (((srgb_pixels + 0.055) / 1.055) ** 2.4) * exponential_mask
+                rgb_to_xyz = tf.constant([
+                    #    X        Y          Z
+                    [0.412453, 0.212671, 0.019334], # R
+                    [0.357580, 0.715160, 0.119193], # G
+                    [0.180423, 0.072169, 0.950227], # B
+                ])
+                xyz_pixels = tf.matmul(rgb_pixels, rgb_to_xyz)
+
+            # https://en.wikipedia.org/wiki/Lab_color_space#CIELAB-CIEXYZ_conversions
+            with tf.name_scope("xyz_to_cielab"):
+                # convert to fx = f(X/Xn), fy = f(Y/Yn), fz = f(Z/Zn)
+
+                # normalize for D65 white point
+                xyz_normalized_pixels = tf.multiply(xyz_pixels, [1/0.950456, 1.0, 1/1.088754])
+
+                epsilon = 6/29
+                linear_mask = tf.cast(xyz_normalized_pixels <= (epsilon**3), dtype=tf.float32)
+                exponential_mask = tf.cast(xyz_normalized_pixels > (epsilon**3), dtype=tf.float32)
+                fxfyfz_pixels = (xyz_normalized_pixels / (3 * epsilon**2) + 4/29) * linear_mask + (xyz_normalized_pixels ** (1/3)) * exponential_mask
+
+                # convert to lab
+                fxfyfz_to_lab = tf.constant([
+                    #  l       a       b
+                    [  0.0,  500.0,    0.0], # fx
+                    [116.0, -500.0,  200.0], # fy
+                    [  0.0,    0.0, -200.0], # fz
+                ])
+                lab_pixels = tf.matmul(fxfyfz_pixels, fxfyfz_to_lab) + tf.constant([-16.0, 0.0, 0.0])
+
+            return tf.reshape(lab_pixels, tf.shape(rgb_input))
+        
+    def lab_to_rgb(self, tf, lab):
+        with tf.name_scope("lab_to_rgb"):
+            lab_pixels = tf.reshape(lab, [-1, 3])
+
+            # https://en.wikipedia.org/wiki/Lab_color_space#CIELAB-CIEXYZ_conversions
+            with tf.name_scope("cielab_to_xyz"):
+                # convert to fxfyfz
+                lab_to_fxfyfz = tf.constant([
+                    #   fx      fy        fz
+                    [1/116.0, 1/116.0,  1/116.0], # l
+                    [1/500.0,     0.0,      0.0], # a
+                    [    0.0,     0.0, -1/200.0], # b
+                ])
+                fxfyfz_pixels = tf.matmul(lab_pixels + tf.constant([16.0, 0.0, 0.0]), lab_to_fxfyfz)
+
+                # convert to xyz
+                epsilon = 6/29
+                linear_mask = tf.cast(fxfyfz_pixels <= epsilon, dtype=tf.float32)
+                exponential_mask = tf.cast(fxfyfz_pixels > epsilon, dtype=tf.float32)
+                xyz_pixels = (3 * epsilon**2 * (fxfyfz_pixels - 4/29)) * linear_mask + (fxfyfz_pixels ** 3) * exponential_mask
+
+                # denormalize for D65 white point
+                xyz_pixels = tf.multiply(xyz_pixels, [0.950456, 1.0, 1.088754])
+
+            with tf.name_scope("xyz_to_srgb"):
+                xyz_to_rgb = tf.constant([
+                    #     r           g          b
+                    [ 3.2404542, -0.9692660,  0.0556434], # x
+                    [-1.5371385,  1.8760108, -0.2040259], # y
+                    [-0.4985314,  0.0415560,  1.0572252], # z
+                ])
+                rgb_pixels = tf.matmul(xyz_pixels, xyz_to_rgb)
+                # avoid a slightly negative number messing up the conversion
+                rgb_pixels = tf.clip_by_value(rgb_pixels, 0.0, 1.0)
+                linear_mask = tf.cast(rgb_pixels <= 0.0031308, dtype=tf.float32)
+                exponential_mask = tf.cast(rgb_pixels > 0.0031308, dtype=tf.float32)
+                srgb_pixels = (rgb_pixels * 12.92 * linear_mask) + ((rgb_pixels ** (1/2.4) * 1.055) - 0.055) * exponential_mask
+
+            return tf.reshape(srgb_pixels, tf.shape(lab))