MATLAB: Problem in thresholding an image

Question

Hi all

I am facing problem in thresholding an image such that in image 1 belongs to background and 0 belongs to foreground pixel.I have computed thresholded now i wan to satify the foreground equation like that

image>=threshold

how can I do it?such that 0 belongs to foreground in this image(black) and 1 belongs to background(white.) image is 576×720 and threshold computed is 576×720.

Thanks

Answer 1

Like this:

foregroundImage = yourImage < threshold; % Can use <= if you want.

The foreground will be black (this is opposite to the normal way of foreground being white).

If your image has teh "foreground" as 0 and background as 1, then you'd do this:

foregroundImage = yourImage == 0;

but in that case it sounds like your image has already been thresholded.