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is there any function in openCV that help me calculate ring projection of an image or i have to write it myself? If i have to write it, can some one help me on writing the code that take less computation-intensive.And the algorithm to calculate ring projection is in here : http://machinevision.iem.yzu.edu.tw/vision/tech/Pattern2-color.pdf.

is there any function in openCV that help me calculate ring projection of an image or i have to write it myself? If i have to write it, can some one help me on writing the code that take less computation-intensive.And the algorithm to calculate ring projection is in here : http://machinevision.iem.yzu.edu.tw/vision/tech/Pattern2-color.pdf.http://machinevision.iem.yzu.edu.tw/vision/tech/Pattern2-color.pdf