error UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

最近在研究tensorflow的工程，遇到一些小白鼠错误，记录一下。

问题：error UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

解决：

def _process_image(filename, coder):
with tf.gfile.FastGFile(filename, 'r') as f:
image_data = f.read()

# image_data = image_data.rstrip("\n").decode("utf-16")
# image_data = image_data.split("\r\n")
image = coder.decode_png(image_data)

修改为：
def _process_image(filename, coder):
with tf.gfile.FastGFile(filename, 'rb') as f:
image_data = f.read()

# image_data = image_data.rstrip("\n").decode("utf-16")
# image_data = image_data.split("\r\n")
image = coder.decode_png(image_data)