Add missed parameters descriptions

Author: dkurt

modules/xfeatures2d/include/opencv2/xfeatures2d/cuda.hpp

@@ -110,7 +110,7 @@ class CV_EXPORTS_W SURF_CUDA
     @param _nOctaveLayers Number of octave layers within each octave.
     @param _extended Extended descriptor flag (true - use extended 128-element descriptors; false - use
     64-element descriptors).
-    @param _keypointsRatio
+    @param _keypointsRatio Limits a maximum number of features
     @param _upright Up-right or rotated features flag (true - do not compute orientation of features;
     false - compute orientation).
     */

modules/ximgproc/include/opencv2/ximgproc/edge_drawing.hpp

@@ -115,7 +115,7 @@ class CV_EXPORTS_W EdgeDrawing : public Algorithm
     /** @brief sets parameters.
 
     this function is meant to be used for parameter setting in other languages than c++ like python.
-    @param parameters
+    @param parameters Parameters of the algorithm
     */
     CV_WRAP void setParams(const EdgeDrawing::Params& parameters);
     virtual ~EdgeDrawing() { }