影象

# Randomly crop a [height, width] section of the image.
distorted_image = tf.random_crop(reshaped_image, [height, width, 3])

# Randomly flip the image horizontally.  隨機翻轉圖片，50%的圖片被左右翻轉
distorted_image = tf.image.random_flip_left_right(distorted_image)

# Because these operations are not commutative, consider randomizing
 
# the order their operation.   
# change brightness and contrast ,both changed in the same picture
distorted_image = tf.image.random_brightness(distorted_image,max_delta=63)    
distorted_image = tf.image.random_contrast(distorted_image,lower=0.2, upper=1.8)