从Matlab转换为repmat的python [英] conversion from matlab to python of repmat

问题描述

我想将给定的matlab代码转换为python

I want to convert the given matlab code to python

img_o = repmat(fill_value, osize);

这里fill_value是一个1x1x3矩阵和osize=[320 320] 输出矩阵为320x320x3

here fill_value is a 1x1x3 matrix and osize=[320 320] output matrix is 320x320x3

我尝试过

img_o = tile(fill_value, osize)

其中

fill_value = numpy.array([[[0, 0, 0]]])
osize=[320,320]

在这里，我得到的是1x320x960而不是320x320x3 matrix的矩阵 请帮助解决

here i am getting a matrix of 1x320x960 instead of 320x320x3 matrix please help to solve

推荐答案

Numpy进行了一些非直觉的工作，它们被非直觉地称为广播".这就是您需要的(只是尺寸向量上的一个更明确的维度):

Numpy does some nonintuitive stuff that it nonintuitively calls "broadcasting". Here's what you need (just one more explicit dimension on your size vector):

>>> osize = (320, 320, 1)
>>> img_o = numpy.tile(fill_value, osize)
>>> img_o.shape
(320, 320, 3)

这篇关于从Matlab转换为repmat的python的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！