Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

To resolve issues starting MATLAB on Mac OS X 10.10 (Yosemite) visit: http://www.mathworks.com/matlabcentral/answers/159016

How to partition an image

Asked by Algorithms Analyst on 29 Jan 2013

Hi all

I am working on some algorithm to implement it and in one stage I have been confused.Lets say that I have an image 512x512.

I want to make image partitioned in nxn squarre like regions that are overlapped with the same gap g for both image.So n=12 and g=3.

Thanks in Advance

0 Comments

Algorithms Analyst

Products

No products are associated with this question.

1 Answer

Answer by Image Analyst on 29 Jan 2013
Accepted answer

Use blockproc() with the BorderSize option.

32 Comments

Algorithms Analyst on 6 Feb 2013

thankyou very much.....just for my exploration I want it...thanks alot..

Walter Roberson on 6 Feb 2013

The 1028 is due to there being partial block 2 pixels wide. mod(512,6) = 2. That block gets extended by the overlap, 3 pixels before and 3 after, to become a total of 8 pixel. 85 full blocks of 12, plus the partial 8, gives 1028. The 85 is floor(512/6). You need to take this partial block into account unless you request padding of the blocks out to full width.

Algorithms Analyst on 6 Feb 2013

I am not clear in that point kindly explain it plz with some piece of code.Thanks.I further quantize the colors by using the K-means algorithm with K=16 as described in paper..

Image Analyst

Contact us