doxygenated opencv_video & opencv_calib3d modules (C++ part only)

modules/imgproc/include/opencv2/imgproc/imgproc.hpp

@@ -1,3 +1,7 @@
+/*! \file imgproc.hpp
+ \brief The Image Processing
+ */
+
 /*M///////////////////////////////////////////////////////////////////////////////////////
 //
 //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
@@ -48,6 +52,9 @@
 
 #ifdef __cplusplus
 
+/*! \namespace cv
+ Namespace where all the C++ OpenCV functionality resides
+ */
 namespace cv
 {