系统信息 Colab tensorflow 2.2.0
描述当前的行为：当我尝试解决我自己的数据问题时遇到了这个错误，即多标签语义分割。
下面是代码
import tensorflow as tf
import tensorflow.keras.backend as K
IMG_WIDTH = 512
IMG_HEIGHT = 512
IMG_CHANNELS = 3
# batch_shape=(512,512,3)
# inputs = Input(batch_shape=(4, 512, 512, 3))
#Build the model
inputs = tf.keras.layers.Input((IMG_HEIGHT, IMG_WIDTH, IMG_CHANNELS))
#s = tf.keras.layers.Lambda(lambda x: x / 255)(inputs)
#Contraction path
c1 = tf.keras.layers.Conv2D(16, (3, 3), activation='relu', kernel_initializer='he_normal', padding='same')(inputs)
c1 = tf.keras.layers.Dropout(0.1)(c1)
c1 = tf.keras.layers.Conv2D(16, (3, 3), activation='relu', kernel_initializer='he_normal', padding='same')(c1)
p1 = tf.keras.layers.MaxPooling2D((2, 2))(c1)
c2 = tf.keras.layers.Conv2D(32, (3, 3), activation='relu', kernel_initializer='he_normal', padding='same')(p1) …