i want to create a block of size W * W is centered at pixel (i; j) in the image.

hi friends i am having a problem and like to solve it step by step

i want to create a block of size W*W and then make it centered at pixel(i,j) of an image. this is the first step i want to do now..

any links , code , tutorials will make me happy and appreciate your answer,

plz help me guys

Answer 1

[Image Analyst]

windowHalfWidth = floor(W/2);
oneBlock = grayImage(i-windowHalfWidth : i+windowHalfWidth, j-windowHalfWidth : j+windowHalfWidth);

For blocks covering the entire image, see the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F

[chitresh]

input = imread('grayimage');

[r,c] = size(input);

then what is the w if i apply what u told me