How to convert a HSV image image into gray scale image

I have converted a RGB image to HSV and segmented.Now i want the segmented image to be converted into Grayscale image.

Answer 1

[Image Analyst]

Exactly what is your segmented image? Is it the binary image that says what is foreground and what is background? Is it the grayscale image that has been masked by the binary image so that the foreground only shows up in gray scale and the background is zero? If it's the binary image do you want to scale it to 0-255 or leave it as 0 & 1?