Added warp method into the RotationWarper interface, added find() into VoronoiSeamFinder which uses only source image sizes

modules/stitching/include/opencv2/stitching/detail/seam_finders.hpp

@@ -71,9 +71,11 @@ public:
                       std::vector<Mat> &masks);
 
 protected:
+    void run();
     virtual void findInPair(size_t first, size_t second, Rect roi) = 0;
 
     std::vector<Mat> images_;
+    std::vector<Size> sizes_;
     std::vector<Point> corners_;
     std::vector<Mat> masks_;
 };
@@ -81,6 +83,9 @@ protected:
 
 class CV_EXPORTS VoronoiSeamFinder : public PairwiseSeamFinder
 {
+public:
+    virtual void find(const std::vector<Size> &size, const std::vector<Point> &corners,
+                      std::vector<Mat> &masks);
 private:
     void findInPair(size_t first, size_t second, Rect roi);
 };

modules/stitching/include/opencv2/stitching/detail/warpers.hpp

@@ -57,11 +57,14 @@ class CV_EXPORTS RotationWarper
 public:
     virtual ~RotationWarper() {}
 
+    virtual Point2f warp(const Point2f &pt, const Mat &K, const Mat &R) = 0;
+
     virtual Rect buildMaps(Size src_size, const Mat &K, const Mat &R, Mat &xmap, Mat &ymap) = 0;
 
     virtual Point warp(const Mat &src, const Mat &K, const Mat &R, int interp_mode, int border_mode,
                        Mat &dst) = 0;
 
+    // TODO add other backward functions for consistency or move this into a separated interface
     virtual void warpBackward(const Mat &src, const Mat &K, const Mat &R, int interp_mode, int border_mode,
                               Size dst_size, Mat &dst) = 0;
 
@@ -88,6 +91,8 @@ template <class P>
 class CV_EXPORTS RotationWarperBase : public RotationWarper
 {   
 public:
+    Point2f warp(const Point2f &pt, const Mat &K, const Mat &R);
+    
     Rect buildMaps(Size src_size, const Mat &K, const Mat &R, Mat &xmap, Mat &ymap);
 
     Point warp(const Mat &src, const Mat &K, const Mat &R, int interp_mode, int border_mode,
@@ -126,6 +131,8 @@ public:
 
     void setScale(float scale) { projector_.scale = scale; }
 
+    Point2f warp(const Point2f &pt, const Mat &K, const Mat &R, const Mat &T);
+
     Rect buildMaps(Size src_size, const Mat &K, const Mat &R, const Mat &T, Mat &xmap, Mat &ymap);
 
     Point warp(const Mat &src, const Mat &K, const Mat &R, const Mat &T, int interp_mode, int border_mode,

modules/stitching/include/opencv2/stitching/detail/warpers_inl.hpp

@@ -49,6 +49,16 @@
 namespace cv {
 namespace detail {
 
+template <class P>
+Point2f RotationWarperBase<P>::warp(const Point2f &pt, const Mat &K, const Mat &R)
+{
+    projector_.setCameraParams(K, R);
+    Point2f uv;
+    projector_.mapForward(pt.x, pt.y, uv.x, uv.y);
+    return uv;
+}
+
+
 template <class P>
 Rect RotationWarperBase<P>::buildMaps(Size src_size, const Mat &K, const Mat &R, Mat &xmap, Mat &ymap)
 {