neighbour pixel operation

sir i have a white and black (binary)image of size (1024X768).i need image to be scanned from left to right, up and down and the scan area is 3X3.if one of 8-neighbour pixel is white (255).then center point should becomes white (255). sir please help in coding

Answer 1

[Walter Roberson]

blkproc or blockproc. Once you are within an individual 3x3 block, say B, then B(2,2) = max(B(2,2),255 * any(B(:)==255))

[javeed miyandad]

i= binary image blkproc(I,[3 3]; B(2,2) = max(B(2,2),255 * any(B(:)==255)); i am not geting sir plz help me

Answer 2

[javeed miyandad]

i= binary image blkproc(I,[3 3]; B(2,2) = max(B(2,2),255 * any(B(:)==255)); i am not geting sir plz help me