switched to gpu::pyrDown and gpu::pyrDown in opencv_stitching

modules/stitching/blenders.cpp

@@ -233,7 +233,10 @@ void MultiBandBlender::feed(const Mat &img, const Mat &mask, Point tl)
     copyMakeBorder(img, img_with_border, top, bottom, left, right,
                    BORDER_REFLECT);
     vector<Mat> src_pyr_laplace;
-    createLaplacePyr(img_with_border, num_bands_, src_pyr_laplace);
+    if (can_use_gpu_)
+        createLaplacePyrGpu(img_with_border, num_bands_, src_pyr_laplace);
+    else
+        createLaplacePyr(img_with_border, num_bands_, src_pyr_laplace);
 
     // Create the weight map Gaussian pyramid
     Mat weight_map;
@@ -338,7 +341,6 @@ void createLaplacePyr(const Mat &img, int num_levels, vector<Mat> &pyr)
 }
 
 
-#if 0
 void createLaplacePyrGpu(const Mat &img, int num_levels, vector<Mat> &pyr)
 {
     pyr.resize(num_levels + 1);
@@ -358,7 +360,6 @@ void createLaplacePyrGpu(const Mat &img, int num_levels, vector<Mat> &pyr)
 
     pyr[num_levels] = gpu_pyr[num_levels];
 }
-#endif
 
 
 void restoreImageFromLaplacePyr(vector<Mat> &pyr)

modules/stitching/blenders.hpp

@@ -109,10 +109,7 @@ void createWeightMap(const cv::Mat& mask, float sharpness, cv::Mat& weight);
 
 void createLaplacePyr(const cv::Mat &img, int num_levels, std::vector<cv::Mat>& pyr);
 
-// TODO Use it after gpu::pyrDown and gpu::pyrUp are updated
-#if 0
 void createLaplacePyrGpu(const cv::Mat &img, int num_levels, std::vector<cv::Mat>& pyr);
-#endif
 
 // Restores source image
 void restoreImageFromLaplacePyr(std::vector<cv::Mat>& pyr);