How do I delete the last dimension of a 256*256*3 matrix?

24 次查看（过去 30 天）
Diptayan Dasgupta
Diptayan Dasgupta 2021-5-12
回答： Daniel Pollard 2021-5-12
I want to get rid of the "*3" part. That's the code I used. The image shouldn't be a multidimentional array.
Ii=imread('1 A.png');% 256*256 pixels 8bit
figure; imshow(Ii);
title('Object pattern')
axis off
Ii=double(Ii);
PH=rand([256,256]);
Ii=Ii.*exp(2i*pi*PH); % add a random phase on the object
M=512;
I=zeros(512);

请先登录，再回答此问题。

采纳的回答

Daniel Pollard
Daniel Pollard 2021-5-12
Is Ii your 256x256x3 array? An image of 256x256 pixels will have 256x256x3 elements because of the red, green and blue elements.
To remove that third dimension, you could extract only one of the layers;
Ii = Ii(:,:,1);
You could average over the layers;
Ii = sum(Ii, 3)./3;
These options will result in Ii having size 256x256, removing the third dimension, but will also remove information that may be useful.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Segmentation and Analysis 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by