baran
Posts:
6
Registered:
4/30/12
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Re: DIVIDING AN IMAGE INTO SUB BLOCKS
Posted:
May 2, 2012 3:02 AM
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ImageAnalyst <imageanalyst@mailinator.com> wrote in message <0bc34147-dd8c-44bb-ad0a-aacfefac0ebf@g27g2000yqa.googlegroups.com>...
> On Feb 10, 12:44 pm, "sanyukta " <sanyuktacheti...@gmail.com> wrote:
> > Thanks..I have used mat2cell function and got a total of p=25 blocks.So each block has q=100x100 elements.Next,I want to concatenate all the elements of the block to give a vector to represent one block resulting in a matrix x=[x1,x2,....xp]of size qxp.How to do?
>
> ----------------------------------------------------------------------------------------------
> If I understand you correctly you want to take one particular block
> and concatenate all the elements of that block go give a 1D vector.
> To do that you just do:
>
> m = rand(500,500); % Sample data 500x500
> divisions = [100 100 100 100 100];
> % Chop up into 100x100 cells.
> mCell = mat2cell(m, divisions, divisions)
> % Pull out one particular cell - it will be a 100x100 array.
> thisBlock = mCell{2,4}; % Or whatever indexes you want.
> % Concatenate into vector 10000 elements long.
> columnVector = thisBlock(:);
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how it is possible to find out in the image which blocks are similar to each other? if one block is copied and pasted in another place in same image.
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