how to strengthen the image ?

1 view (last 30 days)
kalaivaani on 5 Feb 2014
Commented: kalaivaani on 6 Feb 2014
In a work that explained as "Image strengthening is done by setting pixel to 1 if five or more pixels in its 3-by-3 neighbourhood are 1's; otherwise, set the pixel to 0." I can't understand it how can i code this whether there is a command for this

Accepted Answer

Jan on 5 Feb 2014
Edited: Jan on 5 Feb 2014
I gather you are working with single channel black and white images, i.e. pixel values are either 0 or 1. In that case, what you describe could be coded as follows:
A = round( randn(100,100) ); % example b/w image
A_s = filter2( ones(3,3), A );
A_s = A_s >= 5;

More Answers (0)


Find more on Images in Help Center and File Exchange


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!