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need help creating a 2D matrix of an image

Asked by Rao on 30 Jul 2012

i have an ycbcr image and i want to get the cb cr planes in a single 2d matrix .

Y=ycbcr(:,:,1);
Cb=ycbcr(:,:,2);
Cr=ycbcr(:,:,3);

by this im getting three 1d matrices but i want to get the color information i.e cbcr planes in a single 2d matrix.

1 Comment

Walter Roberson on 30 Jul 2012

Please show us the output of

size(ycbcr)
Rao

3 Answers

Answer by Image Analyst on 30 Jul 2012

That doesn't make sense to me. You have everything you need. For a given pixel at a given (row, column) you have all three component's values. What is this other thing you're trying to derive, why do you want it, and why would it be more useful than the 3D color image?

1 Comment

Yash on 30 Jul 2012

its 3 D info

Image Analyst
Answer by gargoyle on 2 Aug 2012

now im not sure, but i think this is what you want:

Y=zeros(size(ycbcr(:,:,1))); %
Y=ycbcr(:,:,1);
Cb=zeros(size(ycbcr(:,:,2))); 
Cb=ycbcr(:,:,2);
Cr=zeros(size(ycbcr(:,:,3))); 
Cr=ycbcr(:,:,3);

i've made 3 different empty mattrix assignments just to be explicit all the 3rd dimensions should have the same row,col size.

0 Comments

gargoyle
Answer by faraz.a on 25 May 2013

I want to find matrix of 0's and 1's (for white and black pixels) for a given binary image

1 Comment

Image Analyst on 25 May 2013

Please start your own thread rather than adding on to all these other threads, and post your image and state what you want the binary image to represent.

faraz.a

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