Highest pixel density in the full image

Hey there,

I am working on the make a HDR image from single image and i am in last stage. I have problem about colors and i need to implement a formula to given below :

assume that i have grayscale image.

Thank you

[Image Analyst]

OK. I don't see a question, so ... good luck. I assume you know how to use the + symbol and the / symbol. By the way, are you trying to implement this in Simulink? You gave it a tag of Simulink.