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https://github.com/qurator-spk/sbb_pixelwise_segmentation.git
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transformer patch size is dynamic now.
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3 changed files with 75 additions and 30 deletions
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@ -1,42 +1,44 @@
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{
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"backbone_type" : "nontransformer",
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"task": "classification",
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"backbone_type" : "transformer",
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"task": "binarization",
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"n_classes" : 2,
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"n_epochs" : 20,
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"input_height" : 448,
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"input_width" : 448,
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"n_epochs" : 1,
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"input_height" : 224,
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"input_width" : 672,
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"weight_decay" : 1e-6,
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"n_batch" : 6,
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"n_batch" : 1,
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"learning_rate": 1e-4,
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"f1_threshold_classification": 0.8,
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"patches" : true,
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"pretraining" : true,
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"augmentation" : false,
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"flip_aug" : false,
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"blur_aug" : false,
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"scaling" : true,
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"degrading": false,
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"brightening": false,
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"binarization" : false,
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"scaling_bluring" : false,
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"scaling_binarization" : false,
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"scaling_flip" : false,
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"rotation": false,
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"rotation_not_90": false,
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"transformer_num_patches_xy": [28, 28],
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"transformer_patchsize": 1,
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"transformer_num_patches_xy": [7, 7],
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"transformer_patchsize_x": 3,
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"transformer_patchsize_y": 1,
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"transformer_projection_dim": 192,
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"blur_k" : ["blur","guass","median"],
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"scales" : [0.6, 0.7, 0.8, 0.9, 1.1, 1.2, 1.4],
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"brightness" : [1.3, 1.5, 1.7, 2],
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"degrade_scales" : [0.2, 0.4],
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"flip_index" : [0, 1, -1],
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"thetha" : [10, -10],
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"classification_classes_name" : {"0":"apple", "1":"orange"},
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"continue_training": false,
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"index_start" : 0,
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"dir_of_start_model" : " ",
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"weighted_loss": false,
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"is_loss_soft_dice": false,
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"data_is_provided": false,
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"dir_train": "./train",
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"dir_eval": "./eval",
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"dir_output": "./output"
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"dir_train": "/home/vahid/Documents/test/training_data_sample_binarization",
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"dir_eval": "/home/vahid/Documents/test/eval",
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"dir_output": "/home/vahid/Documents/test/out"
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}
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47
models.py
47
models.py
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@ -6,25 +6,49 @@ from tensorflow.keras import layers
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from tensorflow.keras.regularizers import l2
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mlp_head_units = [2048, 1024]
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projection_dim = 64
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#projection_dim = 64
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transformer_layers = 8
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num_heads = 4
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resnet50_Weights_path = './pretrained_model/resnet50_weights_tf_dim_ordering_tf_kernels_notop.h5'
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IMAGE_ORDERING = 'channels_last'
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MERGE_AXIS = -1
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transformer_units = [
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projection_dim * 2,
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projection_dim,
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] # Size of the transformer layers
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def mlp(x, hidden_units, dropout_rate):
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for units in hidden_units:
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x = layers.Dense(units, activation=tf.nn.gelu)(x)
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x = layers.Dropout(dropout_rate)(x)
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return x
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class Patches(layers.Layer):
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def __init__(self, patch_size_x, patch_size_y):#__init__(self, **kwargs):#:__init__(self, patch_size):#__init__(self, **kwargs):
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super(Patches, self).__init__()
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self.patch_size_x = patch_size_x
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self.patch_size_y = patch_size_y
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def call(self, images):
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#print(tf.shape(images)[1],'images')
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#print(self.patch_size,'self.patch_size')
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batch_size = tf.shape(images)[0]
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patches = tf.image.extract_patches(
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images=images,
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sizes=[1, self.patch_size_y, self.patch_size_x, 1],
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strides=[1, self.patch_size_y, self.patch_size_x, 1],
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rates=[1, 1, 1, 1],
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padding="VALID",
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)
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patch_dims = patches.shape[-1]
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patches = tf.reshape(patches, [batch_size, -1, patch_dims])
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return patches
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def get_config(self):
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config = super().get_config().copy()
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config.update({
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'patch_size_x': self.patch_size_x,
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'patch_size_y': self.patch_size_y,
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})
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return config
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class Patches_old(layers.Layer):
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def __init__(self, patch_size):#__init__(self, **kwargs):#:__init__(self, patch_size):#__init__(self, **kwargs):
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super(Patches, self).__init__()
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self.patch_size = patch_size
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@ -369,8 +393,13 @@ def resnet50_unet(n_classes, input_height=224, input_width=224, task="segmentati
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return model
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def vit_resnet50_unet(n_classes, patch_size, num_patches, input_height=224, input_width=224, task="segmentation", weight_decay=1e-6, pretraining=False):
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def vit_resnet50_unet(n_classes, patch_size_x, patch_size_y, num_patches, projection_dim = 64, input_height=224, input_width=224, task="segmentation", weight_decay=1e-6, pretraining=False):
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inputs = layers.Input(shape=(input_height, input_width, 3))
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transformer_units = [
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projection_dim * 2,
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projection_dim,
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] # Size of the transformer layers
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IMAGE_ORDERING = 'channels_last'
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bn_axis=3
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@ -414,7 +443,7 @@ def vit_resnet50_unet(n_classes, patch_size, num_patches, input_height=224, inpu
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#patch_size_y = input_height / x.shape[1]
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#patch_size_x = input_width / x.shape[2]
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#patch_size = patch_size_x * patch_size_y
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patches = Patches(patch_size)(x)
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patches = Patches(patch_size_x, patch_size_y)(x)
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# Encode patches.
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encoded_patches = PatchEncoder(num_patches, projection_dim)(patches)
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@ -434,7 +463,7 @@ def vit_resnet50_unet(n_classes, patch_size, num_patches, input_height=224, inpu
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# Skip connection 2.
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encoded_patches = layers.Add()([x3, x2])
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encoded_patches = tf.reshape(encoded_patches, [-1, x.shape[1], x.shape[2], 64])
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encoded_patches = tf.reshape(encoded_patches, [-1, x.shape[1], x.shape[2] , int( projection_dim / (patch_size_x * patch_size_y) )])
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v1024_2048 = Conv2D( 1024 , (1, 1), padding='same', data_format=IMAGE_ORDERING,kernel_regularizer=l2(weight_decay))(encoded_patches)
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v1024_2048 = (BatchNormalization(axis=bn_axis))(v1024_2048)
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30
train.py
30
train.py
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@ -70,8 +70,10 @@ def config_params():
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brightness = None # Brighten image for augmentation.
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flip_index = None # Flip image for augmentation.
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continue_training = False # Set to true if you would like to continue training an already trained a model.
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transformer_patchsize = None # Patch size of vision transformer patches.
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transformer_patchsize_x = None # Patch size of vision transformer patches.
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transformer_patchsize_y = None
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transformer_num_patches_xy = None # Number of patches for vision transformer.
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transformer_projection_dim = 64 # Transformer projection dimension
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index_start = 0 # Index of model to continue training from. E.g. if you trained for 3 epochs and last index is 2, to continue from model_1.h5, set "index_start" to 3 to start naming model with index 3.
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dir_of_start_model = '' # Directory containing pretrained encoder to continue training the model.
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is_loss_soft_dice = False # Use soft dice as loss function. When set to true, "weighted_loss" must be false.
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@ -92,7 +94,7 @@ def run(_config, n_classes, n_epochs, input_height,
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brightening, binarization, blur_k, scales, degrade_scales,
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brightness, dir_train, data_is_provided, scaling_bluring,
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scaling_brightness, scaling_binarization, rotation, rotation_not_90,
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thetha, scaling_flip, continue_training, transformer_patchsize,
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thetha, scaling_flip, continue_training, transformer_projection_dim, transformer_patchsize_x, transformer_patchsize_y,
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transformer_num_patches_xy, backbone_type, flip_index, dir_eval, dir_output,
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pretraining, learning_rate, task, f1_threshold_classification, classification_classes_name):
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@ -212,15 +214,27 @@ def run(_config, n_classes, n_epochs, input_height,
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if backbone_type=='nontransformer':
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model = resnet50_unet(n_classes, input_height, input_width, task, weight_decay, pretraining)
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elif backbone_type=='transformer':
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num_patches = transformer_num_patches_xy[0]*transformer_num_patches_xy[1]
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num_patches_x = transformer_num_patches_xy[0]
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num_patches_y = transformer_num_patches_xy[1]
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num_patches = num_patches_x * num_patches_y
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if not (num_patches == (input_width / 32) * (input_height / 32)):
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print("Error: transformer num patches error. Parameter transformer_num_patches_xy should be set to (input_width/32) = {} and (input_height/32) = {}".format(int(input_width / 32), int(input_height / 32)) )
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##if not (num_patches == (input_width / 32) * (input_height / 32)):
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##print("Error: transformer num patches error. Parameter transformer_num_patches_xy should be set to (input_width/32) = {} and (input_height/32) = {}".format(int(input_width / 32), int(input_height / 32)) )
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##sys.exit(1)
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#if not (transformer_patchsize == 1):
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#print("Error: transformer patchsize error. Parameter transformer_patchsizeshould set to 1" )
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#sys.exit(1)
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if (input_height != (num_patches_y * transformer_patchsize_y * 32) ):
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print("Error: transformer_patchsize_y or transformer_num_patches_xy height value error . input_height should be equal to ( transformer_num_patches_xy height value * transformer_patchsize_y * 32)")
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sys.exit(1)
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if not (transformer_patchsize == 1):
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print("Error: transformer patchsize error. Parameter transformer_patchsizeshould set to 1" )
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if (input_width != (num_patches_x * transformer_patchsize_x * 32) ):
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print("Error: transformer_patchsize_x or transformer_num_patches_xy width value error . input_width should be equal to ( transformer_num_patches_xy width value * transformer_patchsize_x * 32)")
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sys.exit(1)
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model = vit_resnet50_unet(n_classes, transformer_patchsize, num_patches, input_height, input_width, task, weight_decay, pretraining)
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if (transformer_projection_dim % (transformer_patchsize_y * transformer_patchsize_x)) != 0:
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print("Error: transformer_projection_dim error. The remainder when parameter transformer_projection_dim is divided by (transformer_patchsize_y*transformer_patchsize_x) should be zero")
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sys.exit(1)
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model = vit_resnet50_unet(n_classes, transformer_patchsize_x, transformer_patchsize_y, num_patches, transformer_projection_dim, input_height, input_width, task, weight_decay, pretraining)
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#if you want to see the model structure just uncomment model summary.
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#model.summary()
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