diff --git a/modules/tracking/src/tldDetector.cpp b/modules/tracking/src/tldDetector.cpp
index 900761bef..0443f46cb 100644
--- a/modules/tracking/src/tldDetector.cpp
+++ b/modules/tracking/src/tldDetector.cpp
@@ -491,6 +491,10 @@ namespace cv
 							continue;
 						varBuffer.push_back(Point(dx * i, dy * j));
 						varScaleIDs.push_back(scaleID);
+
+						//Debug display candidates after Variance Filter
+						double curScale = pow(tld::SCALE_STEP, scaleID);
+						debugStack[0].push_back(Rect2d(dx * i* curScale, dy * j*curScale, initSize.width*curScale, initSize.height*curScale));
 					}
 				}
 				scaleID++;
@@ -520,6 +524,9 @@ namespace cv
 			//t = (e2 - e1) / getTickFrequency()*1000.0;
 			//printf("Ensemble: %d\t%f\n", ensBuffer.size(), t);
 
+			//printf("varBuffer: %d\n", varBuffer.size());
+			//printf("ensBuffer: %d\n", ensBuffer.size());
+
 			//NN classification
 			//e1 = getTickCount();
 			for (int i = 0; i < (int)ensBuffer.size(); i++)
@@ -561,8 +568,11 @@ namespace cv
 
 			if (maxSc < 0)
 				return false;
-			res = maxScRect;
-			return true;
+			else
+			{
+				res = maxScRect;
+				return true;
+			}
 		}
 
 		bool TLDDetector::ocl_detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches, Size initSize)
diff --git a/modules/tracking/src/tldDetector.hpp b/modules/tracking/src/tldDetector.hpp
index 3e1189592..4dc433607 100644
--- a/modules/tracking/src/tldDetector.hpp
+++ b/modules/tracking/src/tldDetector.hpp
@@ -66,6 +66,8 @@ namespace cv
 
 		static const cv::Size GaussBlurKernelSize(3, 3);
 
+
+
 		class TLDDetector
 		{
 		public:
@@ -79,6 +81,7 @@ namespace cv
 			double ocl_Sc(const Mat_<uchar>& patch);
 			void ocl_batchSrSc(const Mat_<uchar>& patches, double *resultSr, double *resultSc, int numOfPatches);
 
+			std::vector <Rect2d> debugStack[10];
 			std::vector<TLDEnsembleClassifier> classifiers;
 			Mat *posExp, *negExp;
 			int *posNum, *negNum;
@@ -93,15 +96,14 @@ namespace cv
 				bool isObject, shouldBeIntegrated;
 			};
 			bool detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches, Size initSize);
-			bool ocl_detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches, Size initSize);
-		protected:
-
-
+			bool ocl_detect(const Mat& img, const Mat& imgBlurred, Rect2d& res, std::vector<LabeledPatch>& patches,  Size initSize);
 
 			friend class MyMouseCallbackDEBUG;
-			void computeIntegralImages(const Mat& img, Mat_<double>& intImgP, Mat_<double>& intImgP2){ integral(img, intImgP, intImgP2, CV_64F); }
-			inline bool patchVariance(Mat_<double>& intImgP, Mat_<double>& intImgP2, double *originalVariance, Point pt, Size size);
+			static void computeIntegralImages(const Mat& img, Mat_<double>& intImgP, Mat_<double>& intImgP2){ integral(img, intImgP, intImgP2, CV_64F); }
+			static inline bool patchVariance(Mat_<double>& intImgP, Mat_<double>& intImgP2, double *originalVariance, Point pt, Size size);
 		};
+
+
 	}
 }
 
diff --git a/modules/tracking/src/tldTracker.cpp b/modules/tracking/src/tldTracker.cpp
index 0f1e2f78e..2af2d8e8e 100644
--- a/modules/tracking/src/tldTracker.cpp
+++ b/modules/tracking/src/tldTracker.cpp
@@ -45,6 +45,13 @@
 namespace cv
 {
 
+	TrackerTLD::Params::Params(){}
+
+	void TrackerTLD::Params::read(const cv::FileNode& /*fn*/){}
+
+	void TrackerTLD::Params::write(cv::FileStorage& /*fs*/) const {}
+
+
 Ptr<TrackerTLD> TrackerTLD::createTracker(const TrackerTLD::Params &parameters)
 {
     return Ptr<tld::TrackerTLDImpl>(new tld::TrackerTLDImpl(parameters));
@@ -112,7 +119,6 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
     Mat_<uchar> standardPatch(STANDARD_PATCH_SIZE, STANDARD_PATCH_SIZE);
     std::vector<TLDDetector::LabeledPatch> detectorResults;
     //best overlap around 92%
-
     std::vector<Rect2d> candidates;
     std::vector<double> candidatesRes;
     bool trackerNeedsReInit = false;
@@ -123,12 +129,11 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
 
 		if (i == 1)
 		{
-			if (ocl::haveOpenCL())
+			if (!ocl::haveOpenCL())
 				DETECT_FLG = tldModel->detector->ocl_detect(imageForDetector, image_blurred, tmpCandid, detectorResults, tldModel->getMinSize());
 			else
 				DETECT_FLG = tldModel->detector->detect(imageForDetector, image_blurred, tmpCandid, detectorResults, tldModel->getMinSize());
 		}
-
         if( ( (i == 0) && !data->failedLastTime && trackerProxy->update(image, tmpCandid) ) || ( DETECT_FLG))
         {
             candidates.push_back(tmpCandid);
@@ -144,7 +149,6 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
                 trackerNeedsReInit = true;
         }
     }
-
     std::vector<double>::iterator it = std::max_element(candidatesRes.begin(), candidatesRes.end());
 
     //dfprintf((stdout, "scale = %f\n", log(1.0 * boundingBox.width / (data->getMinSize()).width) / log(SCALE_STEP)));
@@ -230,6 +234,16 @@ bool TrackerTLDImpl::updateImpl(const Mat& image, Rect2d& boundingBox)
 #endif
     }
 
+
+	//Debug display candidates after Variance Filter
+	////////////////////////////////////////////////
+	Mat tmpImg = image;
+	for (int i = 0; i < tldModel->detector->debugStack[0].size(); i++)
+		//rectangle(tmpImg, tldModel->detector->debugStack[0][i], Scalar(255, 255, 255), 1, 1, 0);
+	tldModel->detector->debugStack[0].clear();
+	tmpImg.copyTo(image);
+
+	////////////////////////////////////////////////
     return true;
 }
 
diff --git a/modules/tracking/src/tldTracker.hpp b/modules/tracking/src/tldTracker.hpp
index 40de754b7..4a5610de3 100644
--- a/modules/tracking/src/tldTracker.hpp
+++ b/modules/tracking/src/tldTracker.hpp
@@ -52,12 +52,6 @@
 namespace cv
 {
 
-TrackerTLD::Params::Params(){}
-
-void TrackerTLD::Params::read(const cv::FileNode& /*fn*/){}
-
-void TrackerTLD::Params::write(cv::FileStorage& /*fs*/) const {}
-
 namespace tld
 {
 class TrackerProxy