Image thresholding using min and max pixel intensity values

Hi,

I'm trying to create a mask based on a minimum and maximum intensity value. All the examples I find are basically thresholding the image from a fixed value (say, 176) to 255. What I need to do is to mask pixels between 165 and 166 to find ROIs on the image.

Thanks!

Answer 1

[Image Analyst]

Try this:

mask = grayImage >= 165 & grayImage <= 166 % Mask of only pixels with GLs of 165 and 166
grayImage(~mask) = 0; % blacken outside the mask.

[Mayke De Freitas Santos]

Thanks.

That worked.