diff --git a/modules/objdetect/include/opencv2/objdetect/objdetect.hpp b/modules/objdetect/include/opencv2/objdetect/objdetect.hpp
index 126e6210c..49d42377e 100644
--- a/modules/objdetect/include/opencv2/objdetect/objdetect.hpp
+++ b/modules/objdetect/include/opencv2/objdetect/objdetect.hpp
@@ -474,6 +474,7 @@ public:
     {
         public:
             virtual cv::Mat generateMask(const cv::Mat& src)=0;
+            virtual void initializeMask(const cv::Mat& src) {};
     };
     void setMaskGenerator(Ptr<MaskGenerator> maskGenerator);
     Ptr<MaskGenerator> getMaskGenerator();
diff --git a/modules/objdetect/src/cascadedetect.cpp b/modules/objdetect/src/cascadedetect.cpp
index 5d67764c7..6c90e7def 100644
--- a/modules/objdetect/src/cascadedetect.cpp
+++ b/modules/objdetect/src/cascadedetect.cpp
@@ -1029,6 +1029,11 @@ void CascadeClassifier::detectMultiScale( const Mat& image, vector<Rect>& object
 
     objects.clear();
 
+    if (!maskGenerator.empty()) {
+        maskGenerator->initializeMask(image);
+    }
+
+
     if( maxObjectSize.height == 0 || maxObjectSize.width == 0 )
         maxObjectSize = image.size();