OpenCV http://opencv.willowgarage.com/documentation/cpp/structural_analysis_and_shape_descriptors.html http://opencv.willowgarage.com/documentation/cpp/structu

OpenCV http://opencv.willowgarage.com/documentation/cpp/structural_analysis_and_shape_descriptors.html http://opencv.willowgarage.com/documentation/cpp/structural_... cv::convexHull