TF之data_format：data_format中的NHWC&NCHW简介、转换的详细攻略

NHWC&NCHW简介

NHWC & NCHW是两种参数呈现的表达方式。在如何表示一组彩色图片的问题上，不同的DL框架有不同的表达。

NHWC&NCHW转换

1、NHWC →  NCHW

import tensorflow as tf

x = tf.reshape(tf.range(24), [1, 3, 4, 2])

out = tf.transpose(x, [0, 3, 1, 2])

print(x.shape)

print(out.shape)

(1, 3, 4, 2)

(1, 2, 3, 4)

2、NCHW → NHWC

import tensorflow as tf

x = tf.reshape(tf.range(24), [1, 2, 3, 4])

out = tf.transpose(x, [0, 2, 3, 1])

print(x.shape)

print(out.shape)

(1, 2, 3, 4)

(1, 3, 4, 2)