how to make two matrices multiplicable in matlab

1 次查看（过去 30 天）

Muneef 2016-2-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/268465-how-to-make-two-matrices-multiplicable-in-matlab

评论： Walter Roberson 2016-2-16

let say i have an image of some dimension and a 3x3 matrix which i want to multiply with all its pixels but how can i achieve it. Rows and cols are not equal?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Star Strider 2016-2-16

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/268465-how-to-make-two-matrices-multiplicable-in-matlab#answer_210058

在 MATLAB Online 中打开

You can see if the convn function does what you want. For this, your image has to be in double-precision, so use the double function on it first.

Esample:

Img = randi([0  255], 40, 50, 3);
K33 = rand(3);
Out = convn( Img, K33, 'same');
figure(1)
subplot(1,2,1)
imshow(uint8(Img))
subplot(1,2,2)
imshow(uint8(Out))