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is there any way to access pixels along the specified curve/path in OpenCV?
I’ve found LineIterator:
http://opencv.willowgarage.com/documentation/cpp/core_drawing_functions.html?highlight=lineiterator#LineIterator
but it’s limited to lines. I would like to find something similar to LineIterator, but working with circles, since I need to read the pixels along the circle, or ellipse.
It is not builtin to opencv, but you can use http://en.wikipedia.org/wiki/Midpoint_circle_algorithm for circles, the article also mentions a paper that describes an extention to ellipses.