Hi, I have a scanned image which contains some multiple-choice questions. So, first of all how could I calculate the average color for most pixels inside a specific circle (I already know how to get the color of one individual pixel I only need help with the algorithm)
Please Note I already worked on those scanned images and made every scanned photo 100% similar to the other. (the only difference is dpi)
Secondly, how could I reach an constant location, at first I thought of reaching pixels but what if my scanned image has 150dpi, and the same image was scanned with 300dpi since this will change the x and y values for that pixel?
What I have tried:
I already explained that. Sorry for the inconvenience