mirror of
https://github.com/iperov/DeepFaceLab.git
synced 2025-07-06 13:02:15 -07:00
205 lines
No EOL
9.2 KiB
Python
205 lines
No EOL
9.2 KiB
Python
import numpy as np
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from nnlib import nnlib
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from models import ModelBase
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from facelib import FaceType
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from samples import *
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from interact import interact as io
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class Model(ModelBase):
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#override
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def onInitializeOptions(self, is_first_run, ask_override):
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if is_first_run:
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self.options['lighter_ae'] = io.input_bool ("Use lightweight autoencoder? (y/n, ?:help skip:n) : ", False, help_message="Lightweight autoencoder is faster, requires less VRAM, sacrificing overall quality. If your GPU VRAM <= 4, you should to choose this option.")
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else:
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default_lighter_ae = self.options.get('created_vram_gb', 99) <= 4 #temporally support old models, deprecate in future
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if 'created_vram_gb' in self.options.keys():
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self.options.pop ('created_vram_gb')
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self.options['lighter_ae'] = self.options.get('lighter_ae', default_lighter_ae)
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if is_first_run or ask_override:
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def_pixel_loss = self.options.get('pixel_loss', False)
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self.options['pixel_loss'] = io.input_bool ("Use pixel loss? (y/n, ?:help skip: n/default ) : ", def_pixel_loss, help_message="Default DSSIM loss good for initial understanding structure of faces. Use pixel loss after 20k iters to enhance fine details and decrease face jitter.")
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else:
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self.options['pixel_loss'] = self.options.get('pixel_loss', False)
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#override
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def onInitialize(self):
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exec(nnlib.import_all(), locals(), globals())
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self.set_vram_batch_requirements( {1.5:4} )
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bgr_shape, mask_shape, self.encoder, self.decoder_src, self.decoder_dst = self.Build(self.options['lighter_ae'])
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if not self.is_first_run():
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weights_to_load = [ [self.encoder , 'encoder.h5'],
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[self.decoder_src, 'decoder_src.h5'],
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[self.decoder_dst, 'decoder_dst.h5']
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]
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self.load_weights_safe(weights_to_load)
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input_src_bgr = Input(bgr_shape)
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input_src_mask = Input(mask_shape)
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input_dst_bgr = Input(bgr_shape)
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input_dst_mask = Input(mask_shape)
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rec_src_bgr, rec_src_mask = self.decoder_src( self.encoder(input_src_bgr) )
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rec_dst_bgr, rec_dst_mask = self.decoder_dst( self.encoder(input_dst_bgr) )
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self.ae = Model([input_src_bgr,input_src_mask,input_dst_bgr,input_dst_mask], [rec_src_bgr, rec_src_mask, rec_dst_bgr, rec_dst_mask] )
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self.ae.compile(optimizer=Adam(lr=5e-5, beta_1=0.5, beta_2=0.999), loss=[ DSSIMMSEMaskLoss(input_src_mask, is_mse=self.options['pixel_loss']), 'mae', DSSIMMSEMaskLoss(input_dst_mask, is_mse=self.options['pixel_loss']), 'mae' ] )
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self.src_view = K.function([input_src_bgr],[rec_src_bgr, rec_src_mask])
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self.dst_view = K.function([input_dst_bgr],[rec_dst_bgr, rec_dst_mask])
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if self.is_training_mode:
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f = SampleProcessor.TypeFlags
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self.set_training_data_generators ([
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SampleGeneratorFace(self.training_data_src_path, sort_by_yaw_target_samples_path=self.training_data_dst_path if self.sort_by_yaw else None,
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debug=self.is_debug(), batch_size=self.batch_size,
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sample_process_options=SampleProcessor.Options(random_flip=self.random_flip, scale_range=np.array([-0.05, 0.05])+self.src_scale_mod / 100.0 ),
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output_sample_types=[ [f.WARPED_TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_BGR, 64],
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[f.TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_BGR, 64],
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[f.TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_M | f.FACE_MASK_FULL, 64] ] ),
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SampleGeneratorFace(self.training_data_dst_path, debug=self.is_debug(), batch_size=self.batch_size,
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sample_process_options=SampleProcessor.Options(random_flip=self.random_flip),
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output_sample_types=[ [f.WARPED_TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_BGR, 64],
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[f.TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_BGR, 64],
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[f.TRANSFORMED | f.FACE_ALIGN_HALF | f.MODE_M | f.FACE_MASK_FULL, 64] ] )
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])
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#override
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def onSave(self):
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self.save_weights_safe( [[self.encoder, 'encoder.h5'],
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[self.decoder_src, 'decoder_src.h5'],
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[self.decoder_dst, 'decoder_dst.h5']] )
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#override
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def onTrainOneIter(self, sample, generators_list):
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warped_src, target_src, target_src_full_mask = sample[0]
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warped_dst, target_dst, target_dst_full_mask = sample[1]
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total, loss_src_bgr, loss_src_mask, loss_dst_bgr, loss_dst_mask = self.ae.train_on_batch( [warped_src, target_src_full_mask, warped_dst, target_dst_full_mask], [target_src, target_src_full_mask, target_dst, target_dst_full_mask] )
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return ( ('loss_src', loss_src_bgr), ('loss_dst', loss_dst_bgr) )
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#override
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def onGetPreview(self, sample):
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test_A = sample[0][1][0:4] #first 4 samples
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test_A_m = sample[0][2][0:4]
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test_B = sample[1][1][0:4]
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test_B_m = sample[1][2][0:4]
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AA, mAA = self.src_view([test_A])
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AB, mAB = self.src_view([test_B])
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BB, mBB = self.dst_view([test_B])
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mAA = np.repeat ( mAA, (3,), -1)
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mAB = np.repeat ( mAB, (3,), -1)
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mBB = np.repeat ( mBB, (3,), -1)
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st = []
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for i in range(0, len(test_A)):
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st.append ( np.concatenate ( (
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test_A[i,:,:,0:3],
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AA[i],
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#mAA[i],
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test_B[i,:,:,0:3],
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BB[i],
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#mBB[i],
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AB[i],
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#mAB[i]
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), axis=1) )
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return [ ('H64', np.concatenate ( st, axis=0 ) ) ]
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def predictor_func (self, face):
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face_64_bgr = face[...,0:3]
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face_64_mask = np.expand_dims(face[...,3],-1)
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x, mx = self.src_view ( [ np.expand_dims(face_64_bgr,0) ] )
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x, mx = x[0], mx[0]
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return np.concatenate ( (x,mx), -1 )
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#override
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def get_converter(self):
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from converters import ConverterMasked
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return ConverterMasked(self.predictor_func,
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predictor_input_size=64,
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output_size=64,
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face_type=FaceType.HALF,
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base_erode_mask_modifier=100,
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base_blur_mask_modifier=100)
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def Build(self, lighter_ae):
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exec(nnlib.code_import_all, locals(), globals())
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bgr_shape = (64, 64, 3)
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mask_shape = (64, 64, 1)
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def downscale (dim):
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def func(x):
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return LeakyReLU(0.1)(Conv2D(dim, 5, strides=2, padding='same')(x))
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return func
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def upscale (dim):
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def func(x):
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return PixelShuffler()(LeakyReLU(0.1)(Conv2D(dim * 4, 3, strides=1, padding='same')(x)))
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return func
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def Encoder(input_shape):
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input_layer = Input(input_shape)
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x = input_layer
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if not lighter_ae:
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x = downscale(128)(x)
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x = downscale(256)(x)
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x = downscale(512)(x)
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x = downscale(1024)(x)
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x = Dense(1024)(Flatten()(x))
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x = Dense(4 * 4 * 1024)(x)
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x = Reshape((4, 4, 1024))(x)
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x = upscale(512)(x)
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else:
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x = downscale(128)(x)
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x = downscale(256)(x)
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x = downscale(512)(x)
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x = downscale(768)(x)
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x = Dense(512)(Flatten()(x))
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x = Dense(4 * 4 * 512)(x)
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x = Reshape((4, 4, 512))(x)
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x = upscale(256)(x)
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return Model(input_layer, x)
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def Decoder():
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if not lighter_ae:
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input_ = Input(shape=(8, 8, 512))
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x = input_
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x = upscale(512)(x)
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x = upscale(256)(x)
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x = upscale(128)(x)
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else:
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input_ = Input(shape=(8, 8, 256))
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x = input_
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x = upscale(256)(x)
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x = upscale(128)(x)
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x = upscale(64)(x)
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y = input_ #mask decoder
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y = upscale(256)(y)
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y = upscale(128)(y)
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y = upscale(64)(y)
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x = Conv2D(3, kernel_size=5, padding='same', activation='sigmoid')(x)
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y = Conv2D(1, kernel_size=5, padding='same', activation='sigmoid')(y)
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return Model(input_, [x,y])
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return bgr_shape, mask_shape, Encoder(bgr_shape), Decoder(), Decoder() |