Seam Estimation

// classes

class cv::detail::DpSeamFinder;
class cv::detail::GraphCutSeamFinder;
class cv::detail::GraphCutSeamFinderBase;
class cv::detail::NoSeamFinder;
class cv::detail::PairwiseSeamFinder;
class cv::detail::SeamFinder;
class cv::detail::VoronoiSeamFinder;