How to find the pixel value at any point on a greyscale image(not on an rgb image?)

Respected sir, I need to find the pixel value on an graylevel image.(not on an RGB image,this can be done using impixel function for RGB image.But i wanted to find it for a grey image.)Is ther any function for this...??

Answer 1

[Matt Kindig]

Function impixel works for grey images too. For such an image, all three RGB values will be the same.