fix spade typo (#3365)

PaddleCV/PaddleGAN/trainer/SPADE.py

@@ -23,6 +23,8 @@ import time
 import network.vgg as vgg
 import pickle as pkl
 import numpy as np
+
+
 class GTrainer():
     def __init__(self, input_label, input_img, input_ins, cfg, step_per_epoch):
         self.cfg = cfg
@@ -43,8 +45,10 @@ class GTrainer():
                 self.pred_fake = []
                 self.pred_real = []
                 for p in pred:
-                    self.pred_fake.append([tensor[:tensor.shape[0] // 2] for tensor in p])
-                    self.pred_real.append([tensor[tensor.shape[0] // 2:] for tensor in p])
+                    self.pred_fake.append(
+                        [tensor[:tensor.shape[0] // 2] for tensor in p])
+                    self.pred_real.append(
+                        [tensor[tensor.shape[0] // 2:] for tensor in p])
             else:
                 self.pred_fake = pred[:pred.shape[0] // 2]
                 self.pred_real = pred[pred.shape[0] // 2:]
@@ -67,20 +71,26 @@ class GTrainer():
             for i in range(num_D):
                 num_intermediate_outputs = len(self.pred_fake[i]) - 1
                 for j in range(num_intermediate_outputs):
-                    self.gan_feat_loss = fluid.layers.reduce_mean(fluid.layers.abs(fluid.layers.elementwise_sub(
-                        x=self.pred_fake[i][j], y=self.pred_real[i][j]))) * cfg.lambda_feat / num_D
+                    self.gan_feat_loss = fluid.layers.reduce_mean(
+                        fluid.layers.abs(
+                            fluid.layers.elementwise_sub(
+                                x=self.pred_fake[i][j], y=self.pred_real[i][
+                                    j]))) * cfg.lambda_feat / num_D
             self.gan_feat_loss.persistable = True
             ########VGG Feat loss
-            weights = [1.0/32, 1.0/16, 1.0/8, 1.0/4, 1.0]
+            weights = [1.0 / 32, 1.0 / 16, 1.0 / 8, 1.0 / 4, 1.0]
             self.vgg = vgg.VGG19()
             fake_vgg = self.vgg.net(self.fake_B)
             real_vgg = self.vgg.net(input_img)
             self.vgg_loss = 0.0
             for i in range(len(fake_vgg)):
-                self.vgg_loss += weights[i] * fluid.layers.reduce_mean(fluid.layers.abs(fluid.layers.elementwise_sub(
+                self.vgg_loss += weights[i] * fluid.layers.reduce_mean(
+                    fluid.layers.abs(
+                        fluid.layers.elementwise_sub(
                             x=fake_vgg[i], y=real_vgg[i])))
             self.vgg_loss.persistable = True
-            self.g_loss = (self.gan_loss + self.gan_feat_loss + self.vgg_loss)/3 
+            self.g_loss = (
+                self.gan_loss + self.gan_feat_loss + self.vgg_loss) / 3
             lr = cfg.learning_rate
             vars = []
             for var in self.program.list_vars():
@@ -109,7 +119,8 @@ class GTrainer():
 
 
 class DTrainer():
-    def __init__(self, input_label, input_img, input_ins, fake_B, cfg, step_per_epoch):
+    def __init__(self, input_label, input_img, input_ins, fake_B, cfg,
+                 step_per_epoch):
         self.program = fluid.default_main_program().clone()
         lr = cfg.learning_rate
         with fluid.program_guard(self.program):
@@ -125,8 +136,10 @@ class DTrainer():
                 self.pred_fake = []
                 self.pred_real = []
                 for p in pred:
-                    self.pred_fake.append([tensor[:tensor.shape[0] // 2] for tensor in p])
-                    self.pred_real.append([tensor[tensor.shape[0] // 2:] for tensor in p])
+                    self.pred_fake.append(
+                        [tensor[:tensor.shape[0] // 2] for tensor in p])
+                    self.pred_real.append(
+                        [tensor[tensor.shape[0] // 2:] for tensor in p])
             else:
                 self.pred_fake = pred[:pred.shape[0] // 2]
                 self.pred_real = pred[pred.shape[0] // 2:]
@@ -134,20 +147,28 @@ class DTrainer():
             #####gan loss
             self.gan_loss_fake = 0
             for pred_i in self.pred_fake:
-                zeros = fluid.layers.fill_constant_batch_size_like(input=pred_i[-1],shape=pred_i[-1].shape,value=0,dtype='float32')
+                zeros = fluid.layers.fill_constant_batch_size_like(
+                    input=pred_i[-1],
+                    shape=pred_i[-1].shape,
+                    value=0,
+                    dtype='float32')
                 if isinstance(pred_i, list):
                     pred_i = pred_i[-1]
-                minval = fluid.layers.elementwise_min(-1 * pred_i-1, zeros)
+                minval = fluid.layers.elementwise_min(-1 * pred_i - 1, zeros)
                 loss_i = -1 * fluid.layers.reduce_mean(minval)
                 self.gan_loss_fake += loss_i
             self.gan_loss_fake /= len(self.pred_fake)
 
             self.gan_loss_real = 0
             for pred_i in self.pred_real:
-                zeros = fluid.layers.fill_constant_batch_size_like(input=pred_i[-1],shape=pred_i[-1].shape,value=0,dtype='float32')
+                zeros = fluid.layers.fill_constant_batch_size_like(
+                    input=pred_i[-1],
+                    shape=pred_i[-1].shape,
+                    value=0,
+                    dtype='float32')
                 if isinstance(pred_i, list):
                     pred_i = pred_i[-1]
-                minval = fluid.layers.elementwise_min(pred_i-1, zeros)
+                minval = fluid.layers.elementwise_min(pred_i - 1, zeros)
                 loss_i = -1 * fluid.layers.reduce_mean(minval)
                 self.gan_loss_real += loss_i
             self.gan_loss_real /= len(self.pred_real)
@@ -188,8 +209,7 @@ class SPADE(object):
             '--vgg19_pretrain',
             type=str,
             default="./VGG19_pretrained",
-            help="VGG19 pretrained model for vgg loss"
-        )
+            help="VGG19 pretrained model for vgg loss")
         parser.add_argument(
             '--crop_width',
             type=int,
@@ -216,10 +236,7 @@ class SPADE(object):
             default=4,
             help="num of discriminator layers for SPADE")
         parser.add_argument(
-            '--label_nc',
-            type=int,
-            default=36,
-            help="label numbers of SPADE")
+            '--label_nc', type=int, default=36, help="label numbers of SPADE")
         parser.add_argument(
             '--ngf',
             type=int,
@@ -245,7 +262,11 @@ class SPADE(object):
             type=float,
             default=10,
             help="weight term of vgg loss")
-        parser.add_argument('--no_instance', type=bool, default=False, help="Whether to use instance label.")
+        parser.add_argument(
+            '--no_instance',
+            type=bool,
+            default=False,
+            help="Whether to use instance label.")
 
         return parser
 
@@ -261,7 +282,9 @@ class SPADE(object):
 
     def build_model(self):
         data_shape = [-1, 3, self.cfg.crop_height, self.cfg.crop_width]
-        label_shape = [-1, self.cfg.label_nc, self.cfg.crop_height, self.cfg.crop_width]
+        label_shape = [
+            -1, self.cfg.label_nc, self.cfg.crop_height, self.cfg.crop_width
+        ]
         edge_shape = [-1, 1, self.cfg.crop_height, self.cfg.crop_width]
 
         input_A = fluid.layers.data(
@@ -273,7 +296,8 @@ class SPADE(object):
         input_fake = fluid.layers.data(
             name='input_fake', shape=data_shape, dtype='float32')
 
-        gen_trainer = GTrainer(input_A, input_B, input_C, self.cfg, self.batch_num)
+        gen_trainer = GTrainer(input_A, input_B, input_C, self.cfg,
+                               self.batch_num)
         dis_trainer = DTrainer(input_A, input_B, input_C, input_fake, self.cfg,
                                self.batch_num)
         py_reader = fluid.io.PyReader(
@@ -290,7 +314,8 @@ class SPADE(object):
         place = fluid.CUDAPlace(0) if self.cfg.use_gpu else fluid.CPUPlace()
         exe = fluid.Executor(place)
         exe.run(fluid.default_startup_program())
-        gen_trainer.vgg.load_vars(exe, gen_trainer.program, self.cfg.vgg19_pretrain)
+        gen_trainer.vgg.load_vars(exe, gen_trainer.program,
+                                  self.cfg.vgg19_pretrain)
 
         if self.cfg.init_model:
             utility.init_checkpoints(self.cfg, exe, gen_trainer, "net_G")
@@ -315,7 +340,8 @@ class SPADE(object):
         for epoch_id in range(self.cfg.epoch):
             batch_id = 0
             for tensor in py_reader():
-                data_A, data_B, data_C = tensor[0]['input_A'], tensor[0]['input_B'], tensor[0]['input_C']
+                data_A, data_B, data_C = tensor[0]['input_A'], tensor[0][
+                    'input_B'], tensor[0]['input_C']
                 tensor_A = fluid.LoDTensor()
                 tensor_B = fluid.LoDTensor()
                 tensor_C = fluid.LoDTensor()
@@ -327,18 +353,20 @@ class SPADE(object):
                 g_loss_gan, g_loss_vgg, g_loss_feat, fake_B_tmp = exe.run(
                     gen_trainer_program,
                     fetch_list=[
-                        gen_trainer.gan_loss, gen_trainer.vgg_loss, gen_trainer.gan_feat_loss,
-                        gen_trainer.fake_B
+                        gen_trainer.gan_loss, gen_trainer.vgg_loss,
+                        gen_trainer.gan_feat_loss, gen_trainer.fake_B
                     ],
-                    feed={"input_label": tensor_A,
+                    feed={
+                        "input_label": tensor_A,
                         "input_img": tensor_B,
-                          "input_ins": tensor_C})
+                        "input_ins": tensor_C
+                    })
 
                 # optimize the discriminator network
-                d_loss_real, d_loss_fake = exe.run(dis_trainer_program,
+                d_loss_real, d_loss_fake = exe.run(
+                    dis_trainer_program,
                     fetch_list=[
-                                                       dis_trainer.gan_loss_real,
-                                                       dis_trainer.gan_loss_fake
+                        dis_trainer.gan_loss_real, dis_trainer.gan_loss_fake
                     ],
                     feed={
                         "input_label": tensor_A,
@@ -355,7 +383,8 @@ class SPADE(object):
                          d_loss_real: {}; d_loss_fake: {}; \n\
                          Batch_time_cost: {:.2f}"
                           .format(epoch_id, batch_id, g_loss_gan[0], g_loss_vgg[
-                              0], g_loss_feat[0], d_loss_real[0], d_loss_fake[0], batch_time))
+                              0], g_loss_feat[0], d_loss_real[0], d_loss_fake[
+                                  0], batch_time))
 
                 sys.stdout.flush()
                 batch_id += 1