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I want to divide a RGB image into a series of non-overlapping blocks size X*X. Then I want to save these blocks in separate matrices and calculate the average of the blocks in RGB values. How can I do this in the fastest way ?
I look forward to your comments and suggestions. Thanks.

I want to divide a RGB image into a series of non-overlapping blocks size X*X. Then I want to save these blocks in separate matrices and calculate the average of the blocks in RGB values. (I am using C ++) How can I do this in the fastest way ?
I look forward to your comments and suggestions. Thanks.

I want to divide a RGB image into a series of non-overlapping blocks size X*X. Then I want to save these blocks in separate matrices and calculate the average of the blocks in RGB values. (I am using C ++) ++)

How can I do this in the fastest way ?
I look forward to your comments and suggestions. Thanks.