OpenCV Q&A Forum - RSS feedhttp://answers.opencv.org/questions/OpenCV answersenCopyright <a href="http://www.opencv.org">OpenCV foundation</a>, 2012-2018.Tue, 13 Dec 2016 07:54:11 -0600What's the Green formula used at cv::contourArea?http://answers.opencv.org/question/118428/whats-the-green-formula-used-at-cvcontourarea/I supose that it's the discrete form of the Green formula used on integration, but I want to know exactly how opencv calculates the discrete area of a contour.
Thank you,
my best regards,
Bivalvo. Mon, 12 Dec 2016 11:04:30 -0600http://answers.opencv.org/question/118428/whats-the-green-formula-used-at-cvcontourarea/Answer by iev6 for <p>I supose that it's the discrete form of the Green formula used on integration, but I want to know exactly how opencv calculates the discrete area of a contour.</p>
<p>Thank you,</p>
<p>my best regards,</p>
<p>Bivalvo. </p>
http://answers.opencv.org/question/118428/whats-the-green-formula-used-at-cvcontourarea/?answer=118623#post-id-118623https://en.wikipedia.org/wiki/Green%27s_theorem#Area_calculation is numerically implemented in opencv, afaik.Tue, 13 Dec 2016 07:54:11 -0600http://answers.opencv.org/question/118428/whats-the-green-formula-used-at-cvcontourarea/?answer=118623#post-id-118623