import multiprocessing import operator from functools import partial import numpy as np from core import mathlib from core.interact import interact as io from core.leras import nn from facelib import FaceType from models import ModelBase from samplelib import * class SAEHDModel(ModelBase): #override def on_initialize_options(self): device_config = nn.getCurrentDeviceConfig() lowest_vram = 2 if len(device_config.devices) != 0: lowest_vram = device_config.devices.get_worst_device().total_mem_gb if lowest_vram >= 4: suggest_batch_size = 8 else: suggest_batch_size = 4 yn_str = {True:'y',False:'n'} default_resolution = self.options['resolution'] = self.load_or_def_option('resolution', 128) default_face_type = self.options['face_type'] = self.load_or_def_option('face_type', 'f') default_models_opt_on_gpu = self.options['models_opt_on_gpu'] = self.load_or_def_option('models_opt_on_gpu', True) default_archi = self.options['archi'] = self.load_or_def_option('archi', 'df') default_ae_dims = self.options['ae_dims'] = self.load_or_def_option('ae_dims', 256) default_e_dims = self.options['e_dims'] = self.load_or_def_option('e_dims', 64) default_d_dims = self.options['d_dims'] = self.options.get('d_dims', None) default_d_mask_dims = self.options['d_mask_dims'] = self.options.get('d_mask_dims', None) default_masked_training = self.options['masked_training'] = self.load_or_def_option('masked_training', True) default_learn_mask = self.options['learn_mask'] = self.load_or_def_option('learn_mask', True) default_eyes_prio = self.options['eyes_prio'] = self.load_or_def_option('eyes_prio', False) default_lr_dropout = self.options['lr_dropout'] = self.load_or_def_option('lr_dropout', False) default_random_warp = self.options['random_warp'] = self.load_or_def_option('random_warp', True) default_gan_power = self.options['gan_power'] = self.load_or_def_option('gan_power', 0.0) default_true_face_power = self.options['true_face_power'] = self.load_or_def_option('true_face_power', 0.0) default_face_style_power = self.options['face_style_power'] = self.load_or_def_option('face_style_power', 0.0) default_bg_style_power = self.options['bg_style_power'] = self.load_or_def_option('bg_style_power', 0.0) default_ct_mode = self.options['ct_mode'] = self.load_or_def_option('ct_mode', 'none') default_clipgrad = self.options['clipgrad'] = self.load_or_def_option('clipgrad', False) default_pretrain = self.options['pretrain'] = self.load_or_def_option('pretrain', False) ask_override = self.ask_override() if self.is_first_run() or ask_override: self.ask_autobackup_hour() self.ask_write_preview_history() self.ask_target_iter() self.ask_random_flip() self.ask_batch_size(suggest_batch_size) if self.is_first_run(): resolution = io.input_int("Resolution", default_resolution, add_info="64-256", help_message="More resolution requires more VRAM and time to train. Value will be adjusted to multiple of 16.") resolution = np.clip ( (resolution // 16) * 16, 64, 256) self.options['resolution'] = resolution self.options['face_type'] = io.input_str ("Face type", default_face_type, ['h','mf','f','wf'], help_message="Half / mid face / full face / whole face. Half face has better resolution, but covers less area of cheeks. Mid face is 30% wider than half face. 'Whole face' covers full area of face include forehead, but requires manual merge in Adobe After Effects.").lower() self.options['archi'] = io.input_str ("AE architecture", default_archi, ['dfhd','liaehd','df','liae'], help_message="'df' keeps faces more natural. 'liae' can fix overly different face shapes. 'hd' is heavyweight version for the best quality.").lower() default_d_dims = 48 if self.options['archi'] == 'dfhd' else 64 default_d_dims = self.options['d_dims'] = self.load_or_def_option('d_dims', default_d_dims) default_d_mask_dims = default_d_dims // 3 default_d_mask_dims += default_d_mask_dims % 2 default_d_mask_dims = self.options['d_mask_dims'] = self.load_or_def_option('d_mask_dims', default_d_mask_dims) if self.is_first_run(): self.options['ae_dims'] = np.clip ( io.input_int("AutoEncoder dimensions", default_ae_dims, add_info="32-1024", help_message="All face information will packed to AE dims. If amount of AE dims are not enough, then for example closed eyes will not be recognized. More dims are better, but require more VRAM. You can fine-tune model size to fit your GPU." ), 32, 1024 ) e_dims = np.clip ( io.input_int("Encoder dimensions", default_e_dims, add_info="16-256", help_message="More dims help to recognize more facial features and achieve sharper result, but require more VRAM. You can fine-tune model size to fit your GPU." ), 16, 256 ) self.options['e_dims'] = e_dims + e_dims % 2 d_dims = np.clip ( io.input_int("Decoder dimensions", default_d_dims, add_info="16-256", help_message="More dims help to recognize more facial features and achieve sharper result, but require more VRAM. You can fine-tune model size to fit your GPU." ), 16, 256 ) self.options['d_dims'] = d_dims + d_dims % 2 d_mask_dims = np.clip ( io.input_int("Decoder mask dimensions", default_d_mask_dims, add_info="16-256", help_message="Typical mask dimensions = decoder dimensions / 3. If you manually cut out obstacles from the dst mask, you can increase this parameter to achieve better quality." ), 16, 256 ) self.options['d_mask_dims'] = d_mask_dims + d_mask_dims % 2 if self.is_first_run() or ask_override: if self.options['face_type'] == 'wf': self.options['masked_training'] = io.input_bool ("Masked training", default_masked_training, help_message="This option is available only for 'whole_face' type. Masked training clips training area to full_face mask, thus network will train the faces properly. When the face is trained enough, disable this option to train all area of the frame. Merge with 'raw-rgb' mode, then use Adobe After Effects to manually mask and compose whole face include forehead.") self.options['learn_mask'] = io.input_bool ("Learn mask", default_learn_mask, help_message="Learning mask will produce a smooth mask in the merger. Also it works as guide for neural network to recognize face directions.") self.options['eyes_prio'] = io.input_bool ("Eyes priority", default_eyes_prio, help_message='Helps to fix eye problems during training like "alien eyes" and wrong eyes direction ( especially on HD architectures ) by forcing the neural network to train eyes with higher priority. before/after https://i.imgur.com/YQHOuSR.jpg ') if self.is_first_run() or ask_override: if len(device_config.devices) == 1: self.options['models_opt_on_gpu'] = io.input_bool ("Place models and optimizer on GPU", default_models_opt_on_gpu, help_message="When you train on one GPU, by default model and optimizer weights are placed on GPU to accelerate the process. You can place they on CPU to free up extra VRAM, thus set bigger dimensions.") self.options['lr_dropout'] = io.input_bool ("Use learning rate dropout", default_lr_dropout, help_message="When the face is trained enough, you can enable this option to get extra sharpness for less amount of iterations.") self.options['random_warp'] = io.input_bool ("Enable random warp of samples", default_random_warp, help_message="Random warp is required to generalize facial expressions of both faces. When the face is trained enough, you can disable it to get extra sharpness for less amount of iterations.") self.options['gan_power'] = np.clip ( io.input_number ("GAN power", default_gan_power, add_info="0.0 .. 10.0", help_message="Train the network in Generative Adversarial manner. Accelerates the speed of training. Forces the neural network to learn small details of the face. You can enable/disable this option at any time. Typical value is 1.0"), 0.0, 10.0 ) if 'df' in self.options['archi']: self.options['true_face_power'] = np.clip ( io.input_number ("'True face' power.", default_true_face_power, add_info="0.0000 .. 1.0", help_message="Experimental option. Discriminates result face to be more like src face. Higher value - stronger discrimination. Typical value is 0.01 . Comparison - https://i.imgur.com/czScS9q.png"), 0.0, 1.0 ) else: self.options['true_face_power'] = 0.0 if self.options['face_type'] != 'wf': self.options['face_style_power'] = np.clip ( io.input_number("Face style power", default_face_style_power, add_info="0.0..100.0", help_message="Learn to transfer face style details such as light and color conditions. Warning: Enable it only after 10k iters, when predicted face is clear enough to start learn style. Start from 0.001 value and check history changes. Enabling this option increases the chance of model collapse."), 0.0, 100.0 ) self.options['bg_style_power'] = np.clip ( io.input_number("Background style power", default_bg_style_power, add_info="0.0..100.0", help_message="Learn to transfer background around face. This can make face more like dst. Enabling this option increases the chance of model collapse. Typical value is 2.0"), 0.0, 100.0 ) self.options['ct_mode'] = io.input_str (f"Color transfer for src faceset", default_ct_mode, ['none','rct','lct','mkl','idt','sot'], help_message="Change color distribution of src samples close to dst samples. Try all modes to find the best.") self.options['clipgrad'] = io.input_bool ("Enable gradient clipping", default_clipgrad, help_message="Gradient clipping reduces chance of model collapse, sacrificing speed of training.") self.options['pretrain'] = io.input_bool ("Enable pretraining mode", default_pretrain, help_message="Pretrain the model with large amount of various faces. After that, model can be used to train the fakes more quickly.") if self.options['pretrain'] and self.get_pretraining_data_path() is None: raise Exception("pretraining_data_path is not defined") self.pretrain_just_disabled = (default_pretrain == True and self.options['pretrain'] == False) #override def on_initialize(self): device_config = nn.getCurrentDeviceConfig() self.model_data_format = "NCHW" if len(device_config.devices) != 0 and not self.is_debug() else "NHWC" nn.initialize(data_format=self.model_data_format) tf = nn.tf conv_kernel_initializer = nn.initializers.ca() class Downscale(nn.ModelBase): def __init__(self, in_ch, out_ch, kernel_size=5, dilations=1, subpixel=True, use_activator=True, *kwargs ): self.in_ch = in_ch self.out_ch = out_ch self.kernel_size = kernel_size self.dilations = dilations self.subpixel = subpixel self.use_activator = use_activator super().__init__(*kwargs) def on_build(self, *args, **kwargs ): self.conv1 = nn.Conv2D( self.in_ch, self.out_ch // (4 if self.subpixel else 1), kernel_size=self.kernel_size, strides=1 if self.subpixel else 2, padding='SAME', dilations=self.dilations, kernel_initializer=conv_kernel_initializer) def forward(self, x): x = self.conv1(x) if self.subpixel: x = nn.tf_space_to_depth(x, 2) if self.use_activator: x = tf.nn.leaky_relu(x, 0.1) return x def get_out_ch(self): return (self.out_ch // 4) * 4 class DownscaleBlock(nn.ModelBase): def on_build(self, in_ch, ch, n_downscales, kernel_size, dilations=1, subpixel=True): self.downs = [] last_ch = in_ch for i in range(n_downscales): cur_ch = ch*( min(2**i, 8) ) self.downs.append ( Downscale(last_ch, cur_ch, kernel_size=kernel_size, dilations=dilations, subpixel=subpixel) ) last_ch = self.downs[-1].get_out_ch() def forward(self, inp): x = inp for down in self.downs: x = down(x) return x class Upscale(nn.ModelBase): def on_build(self, in_ch, out_ch, kernel_size=3 ): self.conv1 = nn.Conv2D( in_ch, out_ch*4, kernel_size=kernel_size, padding='SAME', kernel_initializer=conv_kernel_initializer) def forward(self, x): x = self.conv1(x) x = tf.nn.leaky_relu(x, 0.1) x = nn.tf_depth_to_space(x, 2) return x class ResidualBlock(nn.ModelBase): def on_build(self, ch, kernel_size=3 ): self.conv1 = nn.Conv2D( ch, ch, kernel_size=kernel_size, padding='SAME', kernel_initializer=conv_kernel_initializer) self.conv2 = nn.Conv2D( ch, ch, kernel_size=kernel_size, padding='SAME', kernel_initializer=conv_kernel_initializer) def forward(self, inp): x = self.conv1(inp) x = tf.nn.leaky_relu(x, 0.2) x = self.conv2(x) x = tf.nn.leaky_relu(inp + x, 0.2) return x class UpdownResidualBlock(nn.ModelBase): def on_build(self, ch, inner_ch, kernel_size=3 ): self.up = Upscale (ch, inner_ch, kernel_size=kernel_size) self.res = ResidualBlock (inner_ch, kernel_size=kernel_size) self.down = Downscale (inner_ch, ch, kernel_size=kernel_size, use_activator=False) def forward(self, inp): x = self.up(inp) x = upx = self.res(x) x = self.down(x) x = x + inp x = tf.nn.leaky_relu(x, 0.2) return x, upx class Encoder(nn.ModelBase): def on_build(self, in_ch, e_ch, is_hd): self.is_hd=is_hd if self.is_hd: self.down1 = DownscaleBlock(in_ch, e_ch*2, n_downscales=4, kernel_size=3, dilations=1) self.down2 = DownscaleBlock(in_ch, e_ch*2, n_downscales=4, kernel_size=5, dilations=1) self.down3 = DownscaleBlock(in_ch, e_ch//2, n_downscales=4, kernel_size=5, dilations=2) self.down4 = DownscaleBlock(in_ch, e_ch//2, n_downscales=4, kernel_size=7, dilations=2) else: self.down1 = DownscaleBlock(in_ch, e_ch, n_downscales=4, kernel_size=5, dilations=1, subpixel=False) def forward(self, inp): if self.is_hd: x = tf.concat([ nn.tf_flatten(self.down1(inp)), nn.tf_flatten(self.down2(inp)), nn.tf_flatten(self.down3(inp)), nn.tf_flatten(self.down4(inp)) ], -1 ) else: x = nn.tf_flatten(self.down1(inp)) return x class Inter(nn.ModelBase): def __init__(self, in_ch, lowest_dense_res, ae_ch, ae_out_ch, **kwargs): self.in_ch, self.lowest_dense_res, self.ae_ch, self.ae_out_ch = in_ch, lowest_dense_res, ae_ch, ae_out_ch super().__init__(**kwargs) def on_build(self): in_ch, lowest_dense_res, ae_ch, ae_out_ch = self.in_ch, self.lowest_dense_res, self.ae_ch, self.ae_out_ch self.dense1 = nn.Dense( in_ch, ae_ch ) self.dense2 = nn.Dense( ae_ch, lowest_dense_res * lowest_dense_res * ae_out_ch ) self.upscale1 = Upscale(ae_out_ch, ae_out_ch) def forward(self, inp): x = self.dense1(inp) x = self.dense2(x) x = nn.tf_reshape_4D (x, lowest_dense_res, lowest_dense_res, self.ae_out_ch) x = self.upscale1(x) return x def get_out_ch(self): return self.ae_out_ch class Decoder(nn.ModelBase): def on_build(self, in_ch, d_ch, d_mask_ch, is_hd ): self.is_hd = is_hd self.upscale0 = Upscale(in_ch, d_ch*8, kernel_size=3) self.upscale1 = Upscale(d_ch*8, d_ch*4, kernel_size=3) self.upscale2 = Upscale(d_ch*4, d_ch*2, kernel_size=3) if is_hd: self.res0 = UpdownResidualBlock(in_ch, d_ch*8, kernel_size=3) self.res1 = UpdownResidualBlock(d_ch*8, d_ch*4, kernel_size=3) self.res2 = UpdownResidualBlock(d_ch*4, d_ch*2, kernel_size=3) self.res3 = UpdownResidualBlock(d_ch*2, d_ch, kernel_size=3) else: self.res0 = ResidualBlock(d_ch*8, kernel_size=3) self.res1 = ResidualBlock(d_ch*4, kernel_size=3) self.res2 = ResidualBlock(d_ch*2, kernel_size=3) self.out_conv = nn.Conv2D( d_ch*2, 3, kernel_size=1, padding='SAME', kernel_initializer=conv_kernel_initializer) self.upscalem0 = Upscale(in_ch, d_mask_ch*8, kernel_size=3) self.upscalem1 = Upscale(d_mask_ch*8, d_mask_ch*4, kernel_size=3) self.upscalem2 = Upscale(d_mask_ch*4, d_mask_ch*2, kernel_size=3) self.out_convm = nn.Conv2D( d_mask_ch*2, 1, kernel_size=1, padding='SAME', kernel_initializer=conv_kernel_initializer) def get_weights_ex(self, include_mask): # Call internal get_weights in order to initialize inner logic self.get_weights() weights = self.upscale0.get_weights() + self.upscale1.get_weights() + self.upscale2.get_weights() \ + self.res0.get_weights() + self.res1.get_weights() + self.res2.get_weights() + self.out_conv.get_weights() if self.is_hd: weights += self.res3.get_weights() if include_mask: weights += self.upscalem0.get_weights() + self.upscalem1.get_weights() + self.upscalem2.get_weights() \ + self.out_convm.get_weights() return weights def forward(self, inp): z = inp if self.is_hd: x, upx = self.res0(z) x = self.upscale0(x) x = tf.nn.leaky_relu(x + upx, 0.2) x, upx = self.res1(x) x = self.upscale1(x) x = tf.nn.leaky_relu(x + upx, 0.2) x, upx = self.res2(x) x = self.upscale2(x) x = tf.nn.leaky_relu(x + upx, 0.2) x, upx = self.res3(x) else: x = self.upscale0(z) x = self.res0(x) x = self.upscale1(x) x = self.res1(x) x = self.upscale2(x) x = self.res2(x) m = self.upscalem0(z) m = self.upscalem1(m) m = self.upscalem2(m) return tf.nn.sigmoid(self.out_conv(x)), \ tf.nn.sigmoid(self.out_convm(m)) class CodeDiscriminator(nn.ModelBase): def on_build(self, in_ch, code_res, ch=256): n_downscales = 1 + code_res // 8 self.convs = [] prev_ch = in_ch for i in range(n_downscales): cur_ch = ch * min( (2**i), 8 ) self.convs.append ( nn.Conv2D( prev_ch, cur_ch, kernel_size=4 if i == 0 else 3, strides=2, padding='SAME', kernel_initializer=conv_kernel_initializer) ) prev_ch = cur_ch self.out_conv = nn.Conv2D( prev_ch, 1, kernel_size=1, padding='VALID', kernel_initializer=conv_kernel_initializer) def forward(self, x): for conv in self.convs: x = tf.nn.leaky_relu( conv(x), 0.1 ) return self.out_conv(x) device_config = nn.getCurrentDeviceConfig() devices = device_config.devices self.resolution = resolution = self.options['resolution'] learn_mask = self.options['learn_mask'] eyes_prio = self.options['eyes_prio'] archi = self.options['archi'] ae_dims = self.options['ae_dims'] e_dims = self.options['e_dims'] d_dims = self.options['d_dims'] d_mask_dims = self.options['d_mask_dims'] self.pretrain = self.options['pretrain'] if self.pretrain_just_disabled: self.set_iter(0) self.gan_power = gan_power = self.options['gan_power'] if not self.pretrain else 0.0 masked_training = self.options['masked_training'] models_opt_on_gpu = False if len(devices) == 0 else True if len(devices) > 1 else self.options['models_opt_on_gpu'] models_opt_device = '/GPU:0' if models_opt_on_gpu and self.is_training else '/CPU:0' optimizer_vars_on_cpu = models_opt_device=='/CPU:0' input_ch = 3 output_ch = 3 bgr_shape = nn.get4Dshape(resolution,resolution,input_ch) mask_shape = nn.get4Dshape(resolution,resolution,1) lowest_dense_res = resolution // 16 self.model_filename_list = [] with tf.device ('/CPU:0'): #Place holders on CPU self.warped_src = tf.placeholder (nn.tf_floatx, bgr_shape) self.warped_dst = tf.placeholder (nn.tf_floatx, bgr_shape) self.target_src = tf.placeholder (nn.tf_floatx, bgr_shape) self.target_dst = tf.placeholder (nn.tf_floatx, bgr_shape) self.target_srcm_all = tf.placeholder (nn.tf_floatx, mask_shape) self.target_dstm_all = tf.placeholder (nn.tf_floatx, mask_shape) # Initializing model classes with tf.device (models_opt_device): if 'df' in archi: self.encoder = Encoder(in_ch=input_ch, e_ch=e_dims, is_hd='hd' in archi, name='encoder') encoder_out_ch = self.encoder.compute_output_channels ( (nn.tf_floatx, bgr_shape)) self.inter = Inter (in_ch=encoder_out_ch, lowest_dense_res=lowest_dense_res, ae_ch=ae_dims, ae_out_ch=ae_dims, name='inter') inter_out_ch = self.inter.compute_output_channels ( (nn.tf_floatx, (None,encoder_out_ch))) self.decoder_src = Decoder(in_ch=inter_out_ch, d_ch=d_dims, d_mask_ch=d_mask_dims, is_hd='hd' in archi, name='decoder_src') self.decoder_dst = Decoder(in_ch=inter_out_ch, d_ch=d_dims, d_mask_ch=d_mask_dims, is_hd='hd' in archi, name='decoder_dst') self.model_filename_list += [ [self.encoder, 'encoder.npy' ], [self.inter, 'inter.npy' ], [self.decoder_src, 'decoder_src.npy'], [self.decoder_dst, 'decoder_dst.npy'] ] if self.is_training: if self.options['true_face_power'] != 0: self.code_discriminator = CodeDiscriminator(ae_dims, code_res=lowest_dense_res*2, name='dis' ) self.model_filename_list += [ [self.code_discriminator, 'code_discriminator.npy'] ] elif 'liae' in archi: self.encoder = Encoder(in_ch=input_ch, e_ch=e_dims, is_hd='hd' in archi, name='encoder') encoder_out_ch = self.encoder.compute_output_channels ( (nn.tf_floatx, bgr_shape)) self.inter_AB = Inter(in_ch=encoder_out_ch, lowest_dense_res=lowest_dense_res, ae_ch=ae_dims, ae_out_ch=ae_dims*2, name='inter_AB') self.inter_B = Inter(in_ch=encoder_out_ch, lowest_dense_res=lowest_dense_res, ae_ch=ae_dims, ae_out_ch=ae_dims*2, name='inter_B') inter_AB_out_ch = self.inter_AB.compute_output_channels ( (nn.tf_floatx, (None,encoder_out_ch))) inter_B_out_ch = self.inter_B.compute_output_channels ( (nn.tf_floatx, (None,encoder_out_ch))) inters_out_ch = inter_AB_out_ch+inter_B_out_ch self.decoder = Decoder(in_ch=inters_out_ch, d_ch=d_dims, d_mask_ch=d_mask_dims, is_hd='hd' in archi, name='decoder') self.model_filename_list += [ [self.encoder, 'encoder.npy'], [self.inter_AB, 'inter_AB.npy'], [self.inter_B , 'inter_B.npy'], [self.decoder , 'decoder.npy'] ] if self.is_training: if gan_power != 0: self.D_src = nn.PatchDiscriminator(patch_size=resolution//16, in_ch=output_ch, base_ch=512, name="D_src") self.D_dst = nn.PatchDiscriminator(patch_size=resolution//16, in_ch=output_ch, base_ch=512, name="D_dst") self.model_filename_list += [ [self.D_src, 'D_src.npy'] ] self.model_filename_list += [ [self.D_dst, 'D_dst.npy'] ] # Initialize optimizers lr=5e-5 lr_dropout = 0.3 if self.options['lr_dropout'] else 1.0 clipnorm = 1.0 if self.options['clipgrad'] else 0.0 self.src_dst_opt = nn.TFRMSpropOptimizer(lr=lr, lr_dropout=lr_dropout, clipnorm=clipnorm, name='src_dst_opt') self.model_filename_list += [ (self.src_dst_opt, 'src_dst_opt.npy') ] if 'df' in archi: self.src_dst_all_trainable_weights = self.encoder.get_weights() + self.inter.get_weights() + self.decoder_src.get_weights() + self.decoder_dst.get_weights() self.src_dst_trainable_weights = self.encoder.get_weights() + self.inter.get_weights() + self.decoder_src.get_weights_ex(learn_mask) + self.decoder_dst.get_weights_ex(learn_mask) elif 'liae' in archi: self.src_dst_all_trainable_weights = self.encoder.get_weights() + self.inter_AB.get_weights() + self.inter_B.get_weights() + self.decoder.get_weights() self.src_dst_trainable_weights = self.encoder.get_weights() + self.inter_AB.get_weights() + self.inter_B.get_weights() + self.decoder.get_weights_ex(learn_mask) self.src_dst_opt.initialize_variables (self.src_dst_all_trainable_weights, vars_on_cpu=optimizer_vars_on_cpu) if self.options['true_face_power'] != 0: self.D_code_opt = nn.TFRMSpropOptimizer(lr=lr, lr_dropout=lr_dropout, clipnorm=clipnorm, name='D_code_opt') self.D_code_opt.initialize_variables ( self.code_discriminator.get_weights(), vars_on_cpu=optimizer_vars_on_cpu) self.model_filename_list += [ (self.D_code_opt, 'D_code_opt.npy') ] if gan_power != 0: self.D_src_dst_opt = nn.TFRMSpropOptimizer(lr=lr, lr_dropout=lr_dropout, clipnorm=clipnorm, name='D_src_dst_opt') self.D_src_dst_opt.initialize_variables ( self.D_src.get_weights()+self.D_dst.get_weights(), vars_on_cpu=optimizer_vars_on_cpu) self.model_filename_list += [ (self.D_src_dst_opt, 'D_src_dst_opt.npy') ] if self.is_training: # Adjust batch size for multiple GPU gpu_count = max(1, len(devices) ) bs_per_gpu = max(1, self.get_batch_size() // gpu_count) self.set_batch_size( gpu_count*bs_per_gpu) # Compute losses per GPU gpu_pred_src_src_list = [] gpu_pred_dst_dst_list = [] gpu_pred_src_dst_list = [] gpu_pred_src_srcm_list = [] gpu_pred_dst_dstm_list = [] gpu_pred_src_dstm_list = [] gpu_src_losses = [] gpu_dst_losses = [] gpu_G_loss_gvs = [] gpu_D_code_loss_gvs = [] gpu_D_src_dst_loss_gvs = [] for gpu_id in range(gpu_count): with tf.device( f'/GPU:{gpu_id}' if len(devices) != 0 else f'/CPU:0' ): with tf.device(f'/CPU:0'): # slice on CPU, otherwise all batch data will be transfered to GPU first batch_slice = slice( gpu_id*bs_per_gpu, (gpu_id+1)*bs_per_gpu ) gpu_warped_src = self.warped_src [batch_slice,:,:,:] gpu_warped_dst = self.warped_dst [batch_slice,:,:,:] gpu_target_src = self.target_src [batch_slice,:,:,:] gpu_target_dst = self.target_dst [batch_slice,:,:,:] gpu_target_srcm_all = self.target_srcm_all[batch_slice,:,:,:] gpu_target_dstm_all = self.target_dstm_all[batch_slice,:,:,:] # process model tensors if 'df' in archi: gpu_src_code = self.inter(self.encoder(gpu_warped_src)) gpu_dst_code = self.inter(self.encoder(gpu_warped_dst)) gpu_pred_src_src, gpu_pred_src_srcm = self.decoder_src(gpu_src_code) gpu_pred_dst_dst, gpu_pred_dst_dstm = self.decoder_dst(gpu_dst_code) gpu_pred_src_dst, gpu_pred_src_dstm = self.decoder_src(gpu_dst_code) elif 'liae' in archi: gpu_src_code = self.encoder (gpu_warped_src) gpu_src_inter_AB_code = self.inter_AB (gpu_src_code) gpu_src_code = tf.concat([gpu_src_inter_AB_code,gpu_src_inter_AB_code], nn.conv2d_ch_axis ) gpu_dst_code = self.encoder (gpu_warped_dst) gpu_dst_inter_B_code = self.inter_B (gpu_dst_code) gpu_dst_inter_AB_code = self.inter_AB (gpu_dst_code) gpu_dst_code = tf.concat([gpu_dst_inter_B_code,gpu_dst_inter_AB_code], nn.conv2d_ch_axis ) gpu_src_dst_code = tf.concat([gpu_dst_inter_AB_code,gpu_dst_inter_AB_code], nn.conv2d_ch_axis ) gpu_pred_src_src, gpu_pred_src_srcm = self.decoder(gpu_src_code) gpu_pred_dst_dst, gpu_pred_dst_dstm = self.decoder(gpu_dst_code) gpu_pred_src_dst, gpu_pred_src_dstm = self.decoder(gpu_src_dst_code) gpu_pred_src_src_list.append(gpu_pred_src_src) gpu_pred_dst_dst_list.append(gpu_pred_dst_dst) gpu_pred_src_dst_list.append(gpu_pred_src_dst) gpu_pred_src_srcm_list.append(gpu_pred_src_srcm) gpu_pred_dst_dstm_list.append(gpu_pred_dst_dstm) gpu_pred_src_dstm_list.append(gpu_pred_src_dstm) # unpack masks from one combined mask gpu_target_srcm = tf.clip_by_value (gpu_target_srcm_all, 0, 1) gpu_target_dstm = tf.clip_by_value (gpu_target_dstm_all, 0, 1) gpu_target_srcm_eyes = tf.clip_by_value (gpu_target_srcm_all-1, 0, 1) gpu_target_dstm_eyes = tf.clip_by_value (gpu_target_dstm_all-1, 0, 1) gpu_target_srcm_blur = nn.tf_gaussian_blur(gpu_target_srcm, max(1, resolution // 32) ) gpu_target_dstm_blur = nn.tf_gaussian_blur(gpu_target_dstm, max(1, resolution // 32) ) gpu_target_dst_masked = gpu_target_dst*gpu_target_dstm_blur gpu_target_dst_anti_masked = gpu_target_dst*(1.0 - gpu_target_dstm_blur) gpu_target_src_masked_opt = gpu_target_src*gpu_target_srcm_blur if masked_training else gpu_target_src gpu_target_dst_masked_opt = gpu_target_dst_masked if masked_training else gpu_target_dst gpu_pred_src_src_masked_opt = gpu_pred_src_src*gpu_target_srcm_blur if masked_training else gpu_pred_src_src gpu_pred_dst_dst_masked_opt = gpu_pred_dst_dst*gpu_target_dstm_blur if masked_training else gpu_pred_dst_dst gpu_psd_target_dst_masked = gpu_pred_src_dst*gpu_target_dstm_blur gpu_psd_target_dst_anti_masked = gpu_pred_src_dst*(1.0 - gpu_target_dstm_blur) gpu_src_loss = tf.reduce_mean ( 10*nn.tf_dssim(gpu_target_src_masked_opt, gpu_pred_src_src_masked_opt, max_val=1.0, filter_size=int(resolution/11.6)), axis=[1]) gpu_src_loss += tf.reduce_mean ( 10*tf.square ( gpu_target_src_masked_opt - gpu_pred_src_src_masked_opt ), axis=[1,2,3]) if eyes_prio: gpu_src_loss += tf.reduce_mean ( 300*tf.abs ( gpu_target_src*gpu_target_srcm_eyes - gpu_pred_src_src*gpu_target_srcm_eyes ), axis=[1,2,3]) if learn_mask: gpu_src_loss += tf.reduce_mean ( 10*tf.square( gpu_target_srcm - gpu_pred_src_srcm ),axis=[1,2,3] ) face_style_power = self.options['face_style_power'] / 100.0 if face_style_power != 0 and not self.pretrain: gpu_src_loss += nn.tf_style_loss(gpu_psd_target_dst_masked, gpu_target_dst_masked, gaussian_blur_radius=resolution//16, loss_weight=10000*face_style_power) bg_style_power = self.options['bg_style_power'] / 100.0 if bg_style_power != 0 and not self.pretrain: gpu_src_loss += tf.reduce_mean( (10*bg_style_power)*nn.tf_dssim(gpu_psd_target_dst_anti_masked, gpu_target_dst_anti_masked, max_val=1.0, filter_size=int(resolution/11.6)), axis=[1]) gpu_src_loss += tf.reduce_mean( (10*bg_style_power)*tf.square( gpu_psd_target_dst_anti_masked - gpu_target_dst_anti_masked), axis=[1,2,3] ) gpu_dst_loss = tf.reduce_mean ( 10*nn.tf_dssim(gpu_target_dst_masked_opt, gpu_pred_dst_dst_masked_opt, max_val=1.0, filter_size=int(resolution/11.6) ), axis=[1]) gpu_dst_loss += tf.reduce_mean ( 10*tf.square( gpu_target_dst_masked_opt- gpu_pred_dst_dst_masked_opt ), axis=[1,2,3]) if eyes_prio: gpu_dst_loss += tf.reduce_mean ( 300*tf.abs ( gpu_target_dst*gpu_target_dstm_eyes - gpu_pred_dst_dst*gpu_target_dstm_eyes ), axis=[1,2,3]) if learn_mask: gpu_dst_loss += tf.reduce_mean ( 10*tf.square( gpu_target_dstm - gpu_pred_dst_dstm ),axis=[1,2,3] ) gpu_src_losses += [gpu_src_loss] gpu_dst_losses += [gpu_dst_loss] gpu_G_loss = gpu_src_loss + gpu_dst_loss def DLoss(labels,logits): return tf.reduce_mean( tf.nn.sigmoid_cross_entropy_with_logits(labels=labels, logits=logits), axis=[1,2,3]) if self.options['true_face_power'] != 0: gpu_src_code_d = self.code_discriminator( gpu_src_code ) gpu_src_code_d_ones = tf.ones_like (gpu_src_code_d) gpu_src_code_d_zeros = tf.zeros_like(gpu_src_code_d) gpu_dst_code_d = self.code_discriminator( gpu_dst_code ) gpu_dst_code_d_ones = tf.ones_like(gpu_dst_code_d) gpu_G_loss += self.options['true_face_power']*DLoss(gpu_src_code_d_ones, gpu_src_code_d) gpu_D_code_loss = (DLoss(gpu_src_code_d_ones , gpu_dst_code_d) + \ DLoss(gpu_src_code_d_zeros, gpu_src_code_d) ) * 0.5 gpu_D_code_loss_gvs += [ nn.tf_gradients (gpu_D_code_loss, self.code_discriminator.get_weights() ) ] if gan_power != 0: gpu_pred_src_src_d = self.D_src(gpu_pred_src_src_masked_opt) gpu_pred_src_src_d_ones = tf.ones_like (gpu_pred_src_src_d) gpu_pred_src_src_d_zeros = tf.zeros_like(gpu_pred_src_src_d) gpu_target_src_d = self.D_src(gpu_target_src_masked_opt) gpu_target_src_d_ones = tf.ones_like(gpu_target_src_d) gpu_pred_dst_dst_d = self.D_dst(gpu_pred_dst_dst_masked_opt) gpu_pred_dst_dst_d_ones = tf.ones_like (gpu_pred_dst_dst_d) gpu_pred_dst_dst_d_zeros = tf.zeros_like(gpu_pred_dst_dst_d) gpu_target_dst_d = self.D_dst(gpu_target_dst_masked_opt) gpu_target_dst_d_ones = tf.ones_like(gpu_target_dst_d) gpu_D_src_dst_loss = (DLoss(gpu_target_src_d_ones , gpu_target_src_d) + \ DLoss(gpu_pred_src_src_d_zeros, gpu_pred_src_src_d) ) * 0.5 + \ (DLoss(gpu_target_dst_d_ones , gpu_target_dst_d) + \ DLoss(gpu_pred_dst_dst_d_zeros, gpu_pred_dst_dst_d) ) * 0.5 gpu_D_src_dst_loss_gvs += [ nn.tf_gradients (gpu_D_src_dst_loss, self.D_src.get_weights()+self.D_dst.get_weights() ) ] gpu_G_loss += gan_power*(DLoss(gpu_pred_src_src_d_ones, gpu_pred_src_src_d) + DLoss(gpu_pred_dst_dst_d_ones, gpu_pred_dst_dst_d)) gpu_G_loss_gvs += [ nn.tf_gradients ( gpu_G_loss, self.src_dst_trainable_weights ) ] # Average losses and gradients, and create optimizer update ops with tf.device (models_opt_device): pred_src_src = nn.tf_concat(gpu_pred_src_src_list, 0) pred_dst_dst = nn.tf_concat(gpu_pred_dst_dst_list, 0) pred_src_dst = nn.tf_concat(gpu_pred_src_dst_list, 0) pred_src_srcm = nn.tf_concat(gpu_pred_src_srcm_list, 0) pred_dst_dstm = nn.tf_concat(gpu_pred_dst_dstm_list, 0) pred_src_dstm = nn.tf_concat(gpu_pred_src_dstm_list, 0) src_loss = nn.tf_average_tensor_list(gpu_src_losses) dst_loss = nn.tf_average_tensor_list(gpu_dst_losses) src_dst_loss_gv_op = self.src_dst_opt.get_update_op (nn.tf_average_gv_list (gpu_G_loss_gvs)) if self.options['true_face_power'] != 0: D_loss_gv_op = self.D_code_opt.get_update_op (nn.tf_average_gv_list(gpu_D_code_loss_gvs)) if gan_power != 0: src_D_src_dst_loss_gv_op = self.D_src_dst_opt.get_update_op (nn.tf_average_gv_list(gpu_D_src_dst_loss_gvs) ) # Initializing training and view functions def src_dst_train(warped_src, target_src, target_srcm_all, \ warped_dst, target_dst, target_dstm_all): s, d, _ = nn.tf_sess.run ( [ src_loss, dst_loss, src_dst_loss_gv_op], feed_dict={self.warped_src :warped_src, self.target_src :target_src, self.target_srcm_all:target_srcm_all, self.warped_dst :warped_dst, self.target_dst :target_dst, self.target_dstm_all:target_dstm_all, }) return s, d self.src_dst_train = src_dst_train if self.options['true_face_power'] != 0: def D_train(warped_src, warped_dst): nn.tf_sess.run ([D_loss_gv_op], feed_dict={self.warped_src: warped_src, self.warped_dst: warped_dst}) self.D_train = D_train if gan_power != 0: def D_src_dst_train(warped_src, target_src, target_srcm_all, \ warped_dst, target_dst, target_dstm_all): nn.tf_sess.run ([src_D_src_dst_loss_gv_op], feed_dict={self.warped_src :warped_src, self.target_src :target_src, self.target_srcm_all:target_srcm_all, self.warped_dst :warped_dst, self.target_dst :target_dst, self.target_dstm_all:target_dstm_all}) self.D_src_dst_train = D_src_dst_train if learn_mask: def AE_view(warped_src, warped_dst): return nn.tf_sess.run ( [pred_src_src, pred_dst_dst, pred_dst_dstm, pred_src_dst, pred_src_dstm], feed_dict={self.warped_src:warped_src, self.warped_dst:warped_dst}) else: def AE_view(warped_src, warped_dst): return nn.tf_sess.run ( [pred_src_src, pred_dst_dst, pred_src_dst], feed_dict={self.warped_src:warped_src, self.warped_dst:warped_dst}) self.AE_view = AE_view else: # Initializing merge function with tf.device( f'/GPU:0' if len(devices) != 0 else f'/CPU:0'): if 'df' in archi: gpu_dst_code = self.inter(self.encoder(self.warped_dst)) gpu_pred_src_dst, gpu_pred_src_dstm = self.decoder_src(gpu_dst_code) _, gpu_pred_dst_dstm = self.decoder_dst(gpu_dst_code) elif 'liae' in archi: gpu_dst_code = self.encoder (self.warped_dst) gpu_dst_inter_B_code = self.inter_B (gpu_dst_code) gpu_dst_inter_AB_code = self.inter_AB (gpu_dst_code) gpu_dst_code = tf.concat([gpu_dst_inter_B_code,gpu_dst_inter_AB_code], nn.conv2d_ch_axis) gpu_src_dst_code = tf.concat([gpu_dst_inter_AB_code,gpu_dst_inter_AB_code], nn.conv2d_ch_axis) gpu_pred_src_dst, gpu_pred_src_dstm = self.decoder(gpu_src_dst_code) _, gpu_pred_dst_dstm = self.decoder(gpu_dst_code) if learn_mask: def AE_merge( warped_dst): return nn.tf_sess.run ( [gpu_pred_src_dst, gpu_pred_dst_dstm, gpu_pred_src_dstm], feed_dict={self.warped_dst:warped_dst}) else: def AE_merge( warped_dst): return nn.tf_sess.run ( [gpu_pred_src_dst], feed_dict={self.warped_dst:warped_dst}) self.AE_merge = AE_merge # Loading/initializing all models/optimizers weights for model, filename in io.progress_bar_generator(self.model_filename_list, "Initializing models"): if self.pretrain_just_disabled: do_init = False if 'df' in archi: if model == self.inter: do_init = True elif 'liae' in archi: if model == self.inter_AB: do_init = True else: do_init = self.is_first_run() if not do_init: do_init = not model.load_weights( self.get_strpath_storage_for_file(filename) ) if do_init: model.init_weights() # initializing sample generators if self.is_training: t = SampleProcessor.Types if self.options['face_type'] == 'h': face_type = t.FACE_TYPE_HALF elif self.options['face_type'] == 'mf': face_type = t.FACE_TYPE_MID_FULL elif self.options['face_type'] == 'f': face_type = t.FACE_TYPE_FULL elif self.options['face_type'] == 'wf': face_type = t.FACE_TYPE_WHOLE_FACE training_data_src_path = self.training_data_src_path if not self.pretrain else self.get_pretraining_data_path() training_data_dst_path = self.training_data_dst_path if not self.pretrain else self.get_pretraining_data_path() random_ct_samples_path=training_data_dst_path if self.options['ct_mode'] != 'none' and not self.pretrain else None t_img_warped = t.IMG_WARPED_TRANSFORMED if self.options['random_warp'] else t.IMG_TRANSFORMED cpu_count = min(multiprocessing.cpu_count(), 8) src_generators_count = cpu_count // 2 dst_generators_count = cpu_count // 2 if self.options['ct_mode'] != 'none': src_generators_count = int(src_generators_count * 1.5) self.set_training_data_generators ([ SampleGeneratorFace(training_data_src_path, random_ct_samples_path=random_ct_samples_path, debug=self.is_debug(), batch_size=self.get_batch_size(), sample_process_options=SampleProcessor.Options(random_flip=self.random_flip), output_sample_types = [ {'types' : (t_img_warped, face_type, t.MODE_BGR), 'data_format':nn.data_format, 'resolution': resolution, 'ct_mode': self.options['ct_mode'] }, {'types' : (t.IMG_TRANSFORMED, face_type, t.MODE_BGR), 'data_format':nn.data_format, 'resolution': resolution, 'ct_mode': self.options['ct_mode'] }, {'types' : (t.IMG_TRANSFORMED, face_type, t.MODE_FACE_MASK_ALL_EYES_HULL), 'data_format':nn.data_format, 'resolution': resolution }, ], generators_count=src_generators_count ), SampleGeneratorFace(training_data_dst_path, debug=self.is_debug(), batch_size=self.get_batch_size(), sample_process_options=SampleProcessor.Options(random_flip=self.random_flip), output_sample_types = [ {'types' : (t_img_warped, face_type, t.MODE_BGR), 'data_format':nn.data_format, 'resolution': resolution}, {'types' : (t.IMG_TRANSFORMED, face_type, t.MODE_BGR), 'data_format':nn.data_format, 'resolution': resolution}, {'types' : (t.IMG_TRANSFORMED, face_type, t.MODE_FACE_MASK_ALL_EYES_HULL), 'data_format':nn.data_format, 'resolution': resolution}, ], generators_count=dst_generators_count ) ]) self.last_src_samples_loss = [] self.last_dst_samples_loss = [] if self.pretrain_just_disabled: self.update_sample_for_preview(force_new=True) #override def get_model_filename_list(self): return self.model_filename_list #override def onSave(self): for model, filename in io.progress_bar_generator(self.get_model_filename_list(), "Saving", leave=False): model.save_weights ( self.get_strpath_storage_for_file(filename) ) #override def onTrainOneIter(self): bs = self.get_batch_size() ( (warped_src, target_src, target_srcm_all), \ (warped_dst, target_dst, target_dstm_all) ) = self.generate_next_samples() src_loss, dst_loss = self.src_dst_train (warped_src, target_src, target_srcm_all, warped_dst, target_dst, target_dstm_all) for i in range(bs): self.last_src_samples_loss.append ( (target_src[i], target_srcm_all[i], src_loss[i] ) ) self.last_dst_samples_loss.append ( (target_dst[i], target_dstm_all[i], dst_loss[i] ) ) if len(self.last_src_samples_loss) >= bs*16: src_samples_loss = sorted(self.last_src_samples_loss, key=operator.itemgetter(2), reverse=True) dst_samples_loss = sorted(self.last_dst_samples_loss, key=operator.itemgetter(2), reverse=True) target_src = np.stack( [ x[0] for x in src_samples_loss[:bs] ] ) target_srcm_all = np.stack( [ x[1] for x in src_samples_loss[:bs] ] ) target_dst = np.stack( [ x[0] for x in dst_samples_loss[:bs] ] ) target_dstm_all = np.stack( [ x[1] for x in dst_samples_loss[:bs] ] ) src_loss, dst_loss = self.src_dst_train (target_src, target_src, target_srcm_all, target_dst, target_dst, target_dstm_all) self.last_src_samples_loss = [] self.last_dst_samples_loss = [] if self.options['true_face_power'] != 0 and not self.pretrain: self.D_train (warped_src, warped_dst) if self.gan_power != 0: self.D_src_dst_train (warped_src, target_src, target_srcm_all, warped_dst, target_dst, target_dstm_all) return ( ('src_loss', np.mean(src_loss) ), ('dst_loss', np.mean(dst_loss) ), ) #override def onGetPreview(self, samples): ( (warped_src, target_src, target_srcm_all,), (warped_dst, target_dst, target_dstm_all,) ) = samples if self.options['learn_mask']: S, D, SS, DD, DDM, SD, SDM = [ np.clip( nn.to_data_format(x,"NHWC", self.model_data_format), 0.0, 1.0) for x in ([target_src,target_dst] + self.AE_view (target_src, target_dst) ) ] DDM, SDM, = [ np.repeat (x, (3,), -1) for x in [DDM, SDM] ] else: S, D, SS, DD, SD, = [ np.clip( nn.to_data_format(x,"NHWC", self.model_data_format) , 0.0, 1.0) for x in ([target_src,target_dst] + self.AE_view (target_src, target_dst) ) ] target_srcm_all, target_dstm_all = [ nn.to_data_format(x,"NHWC", self.model_data_format) for x in ([target_srcm_all, target_dstm_all] )] target_srcm = np.clip(target_srcm_all, 0, 1) target_dstm = np.clip(target_dstm_all, 0, 1) n_samples = min(4, self.get_batch_size(), 800 // self.resolution ) result = [] st = [] for i in range(n_samples): ar = S[i], SS[i], D[i], DD[i], SD[i] st.append ( np.concatenate ( ar, axis=1) ) result += [ ('SAEHD', np.concatenate (st, axis=0 )), ] if self.options['learn_mask']: st_m = [] for i in range(n_samples): ar = S[i]*target_srcm[i], SS[i], D[i]*target_dstm[i], DD[i]*DDM[i], SD[i]*(DDM[i]*SDM[i]) st_m.append ( np.concatenate ( ar, axis=1) ) result += [ ('SAEHD masked', np.concatenate (st_m, axis=0 )), ] return result def predictor_func (self, face=None): face = nn.to_data_format(face[None,...], self.model_data_format, "NHWC") if self.options['learn_mask']: bgr, mask_dst_dstm, mask_src_dstm = [ nn.to_data_format(x,"NHWC", self.model_data_format).astype(np.float32) for x in self.AE_merge (face) ] mask = mask_dst_dstm[0] * mask_src_dstm[0] return bgr[0], mask[...,0] else: bgr, = [ nn.to_data_format(x,"NHWC", self.model_data_format).astype(np.float32) for x in self.AE_merge (face) ] return bgr[0] #override def get_MergerConfig(self): if self.options['face_type'] == 'h': face_type = FaceType.HALF elif self.options['face_type'] == 'mf': face_type = FaceType.MID_FULL elif self.options['face_type'] == 'f': face_type = FaceType.FULL elif self.options['face_type'] == 'wf': face_type = FaceType.WHOLE_FACE import merger return self.predictor_func, (self.options['resolution'], self.options['resolution'], 3), merger.MergerConfigMasked(face_type=face_type, default_mode = 'overlay' if self.options['ct_mode'] != 'none' or self.options['face_style_power'] or self.options['bg_style_power'] else 'seamless', ) Model = SAEHDModel