Merge pull request #13857 from LaurentBerger:bug13853

modules/photo/include/opencv2/photo.hpp

@@ -328,8 +328,8 @@ class CV_EXPORTS_W Tonemap : public Algorithm
 public:
     /** @brief Tonemaps image
 
-    @param src source image - 32-bit 3-channel Mat
-    @param dst destination image - 32-bit 3-channel Mat with values in [0, 1] range
+    @param src source image - CV_32FC3 Mat (float 32 bits 3 channels)
+    @param dst destination image - CV_32FC3 Mat with values in [0, 1] range
      */
     CV_WRAP virtual void process(InputArray src, OutputArray dst) = 0;
 

modules/photo/src/tonemap.cpp

@@ -66,6 +66,7 @@ public:
 
         Mat src = _src.getMat();
         CV_Assert(!src.empty());
+        CV_Assert(_src.dims() == 2 && _src.type() == CV_32FC3);
         _dst.create(src.size(), CV_32FC3);
         Mat dst = _dst.getMat();