placing 3 image pixels in an array from a large image vector

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Avinash Bhatt
Avinash Bhatt 2019-5-16
编辑： KSSV 2019-5-16
I have a 256X256 image array, I am placing a 3X3 window over it and scanning for uncorrupted pixels. Suppose I got 3 pixels which are uncorrupted which I want to put in a vector form for ex-
I got 3 uncorrupted pixels in Matlab which are
I(i,j)= 49
I(i,j)= 36
I(i,j)= 109
I want to put them in this form :
Z=[49 36 109];
Please provide the matlab code for doing this

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KSSV
KSSV 2019-5-16
编辑：KSSV 2019-5-16
YOu know ths sub-indices (i,j) for the required pixels. Get the index for it and arrange in a vector.
idx = sub2ind(size(I),i,j) ; % I should be a 2D matrix
Z = I(idx) ;

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