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

조회 수: 43 (최근 30일)
Diptayan Dasgupta
Diptayan Dasgupta 2021년 5월 12일
답변: Daniel Pollard 2021년 5월 12일
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);

채택된 답변

Daniel Pollard
Daniel Pollard 2021년 5월 12일
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.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Images에 대해 자세히 알아보기

Community Treasure Hunt

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

Start Hunting!

Translated by