How to find 32 ring partition of [512 512] square image?

How to find 32 ring partition of [512 512] square image?

[Image Analyst]

What is that? Do you have an image with rings in it? Can you attach your image. Also, define "find" and "partition". By "find" do you just mean a binary image of what pixels are, or are not , in a "ring"?

[Ram KARSH]

In general, rotation manipulation takes image center as origin of coordinates. Thus, to make image hash resilient to rotation, we can divide an image into different rings and use them to form a secondary image invariant to rotation. square image divided into seven rings. Let the size of square image be m m; n be the total number of rings, and Rk be a set of those pixel values in the kth ring (k = 1; 2; . . .; n). It is part of paper R o b u s t P e r c e p t u a l I m a g e H a s h i n g B a s e d o n R i n g P a r t i t i o n a n d N M F.