Merge pull request #2011 from mshabunin:enable-narrowing-warning

* Fixed type narrowing issues

modules/optflow/src/pcaflow.cpp

@@ -328,7 +328,8 @@ void OpticalFlowPCAFlow::getSystem( OutputArray AOut, OutputArray b1Out, OutputA
     Mat b2 = b2Out.getMat();
 
     ocl::Kernel kernel( "fillDCTSampledPoints", _ocl_fillDCTSampledPointsSource );
-    size_t globSize[] = {features.size(), basisSize.width, basisSize.height};
+    CV_Assert(basisSize.width > 0 && basisSize.height > 0);
+    size_t globSize[] = {features.size(), (size_t)basisSize.width, (size_t)basisSize.height};
     kernel
       .args( cv::ocl::KernelArg::ReadOnlyNoSize( Mat( features ).getUMat( ACCESS_READ ) ),
              cv::ocl::KernelArg::WriteOnlyNoSize( A ), (int)features.size(), (int)basisSize.width,
@@ -376,7 +377,8 @@ void OpticalFlowPCAFlow::getSystem( OutputArray A1Out, OutputArray A2Out, Output
     Mat b2 = b2Out.getMat();
 
     ocl::Kernel kernel( "fillDCTSampledPoints", _ocl_fillDCTSampledPointsSource );
-    size_t globSize[] = {features.size(), basisSize.width, basisSize.height};
+    CV_Assert(basisSize.width > 0 && basisSize.height > 0);
+    size_t globSize[] = {features.size(), (size_t)basisSize.width, (size_t)basisSize.height};
     kernel
       .args( cv::ocl::KernelArg::ReadOnlyNoSize( Mat( features ).getUMat( ACCESS_READ ) ),
              cv::ocl::KernelArg::WriteOnlyNoSize( A ), (int)features.size(), (int)basisSize.width,

modules/optflow/src/sparse_matching_gpc.cpp

@@ -267,7 +267,9 @@ bool ocl_getAllDCTDescriptorsForImage( const Mat *imgCh, std::vector< GPCPatchDe
   const Size sz = imgCh[0].size();
   ocl::Kernel kernel( "getPatchDescriptor", ocl::optflow::sparse_matching_gpc_oclsrc,
                       format( "-DPATCH_RADIUS_DOUBLED=%d -DCV_PI=%f -DSQRT2_INV=%f", PATCH_RADIUS_DOUBLED, CV_PI, SQRT2_INV ) );
-  size_t globSize[] = {sz.height - 2 * patchRadius, sz.width - 2 * patchRadius};
+  CV_Assert(sz.height - 2 * patchRadius > 0);
+  CV_Assert(sz.width - 2 * patchRadius > 0);
+  size_t globSize[] = {(size_t)(sz.height - 2 * patchRadius), (size_t)(sz.width - 2 * patchRadius)};
   UMat out( globSize[0] * globSize[1], GPCPatchDescriptor::nFeatures, CV_64F );
   if (
     kernel

modules/ximgproc/samples/colorize.cpp

@@ -338,11 +338,11 @@ void drawTrajectoryByReference(cv::Mat& img)
 
                 if(drawByReference)
                 {
-                    cv::circle(img, cv::Point2d(x, y), 0.1, cv::Scalar(blue, green, red), -1);
+                    cv::circle(img, cv::Point2d(x, y), 1, cv::Scalar(blue, green, red), -1);
                 }
                 else
                 {
-                    cv::circle(img, cv::Point2d(x, y), 0.1, cv::Scalar(draw_b, draw_g, draw_r), -1);
+                    cv::circle(img, cv::Point2d(x, y), 1, cv::Scalar(draw_b, draw_g, draw_r), -1);
                 }
             }
         }