diff --git a/WebARKit/WebARKitManager.cpp b/WebARKit/WebARKitManager.cpp
index 47e24d6..703b4da 100644
--- a/WebARKit/WebARKitManager.cpp
+++ b/WebARKit/WebARKitManager.cpp
@@ -79,7 +79,7 @@ bool WebARKitManager::shutdown() {
     return true;
 };
 
-void WebARKitManager::processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType, bool enableBlur) {
+void WebARKitManager::processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType) {
     WEBARKIT_LOGd("WebARKitManager::processFrameData(...)\n");
     if (state < WAITING_FOR_VIDEO) {
         WEBARKIT_LOGe("processFrameData called without init the tracker. Call first initTracker.\n");
@@ -88,7 +88,7 @@ void WebARKitManager::processFrameData(uchar* frameData, size_t frameCols, size_
         WEBARKIT_LOGe("Error initialising processFrameData.\n");
         //return false;
     }
-  m_tracker->processFrameData(frameData, frameCols, frameRows, colorSpace, blurType, enableBlur);
+  m_tracker->processFrameData(frameData, frameCols, frameRows, colorSpace, blurType);
   state = DETECTION_RUNNING;
   WEBARKIT_LOGd("WebARKitManager::processFrameData() done\n");
 }
diff --git a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.cpp b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.cpp
index f907f13..605fa04 100644
--- a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.cpp
+++ b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.cpp
@@ -142,11 +142,13 @@ class WebARKitTracker::WebARKitTrackerImpl {
         assert(grayImage.channels() == 1);
 
         this->_featureDetector->detect(grayImage, keypoints, featureMask);
+        WEBARKIT_LOGd("keypoints size: %d\n", keypoints.size());
         if (keypoints.empty()) {
             WEBARKIT_LOGe("No keypoints detected!\n");
             return false;
         }
         this->_featureDescriptor->compute(grayImage, keypoints, descriptors);
+        WEBARKIT_LOGd("descriptors size: %d\n", descriptors.size());
         if (descriptors.empty()) {
             WEBARKIT_LOGe("No descriptors computed!\n");
             return false;
@@ -155,7 +157,7 @@ class WebARKitTracker::WebARKitTrackerImpl {
     }
 
     void processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace,
-                          BLUR_TYPE blurType, bool enableBlur) {
+                          BLUR_TYPE blurType) {
         cv::Mat grayFrame = convert2Grayscale(frameData, frameCols, frameRows, colorSpace);
         if (blurType == BLUR_TYPE::BOX_BLUR) {
             cv::blur(grayFrame, grayFrame, blurSize);
@@ -347,7 +349,7 @@ class WebARKitTracker::WebARKitTrackerImpl {
                 // return false;
             };
             //if (!_isDetected) {
-            WEBARKIT_LOGd("frameKeyPts.size() = %d\n", frameKeyPts.size());
+            WEBARKIT_LOGd("frame KeyPoints size: %d\n", frameKeyPts.size());
             if (static_cast<int>(frameKeyPts.size()) > minRequiredDetectedFeatures) {
                 MatchFeatures(frameKeyPts, frameDescr);
             }
@@ -793,8 +795,8 @@ void WebARKitTracker::initTracker(uchar* refData, size_t refCols, size_t refRows
 }
 
 void WebARKitTracker::processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace,
-                                       BLUR_TYPE blurType,bool enableBlur) {
-    _trackerImpl->processFrameData(frameData, frameCols, frameRows, colorSpace, blurType, enableBlur);
+                                       BLUR_TYPE blurType) {
+    _trackerImpl->processFrameData(frameData, frameCols, frameRows, colorSpace, blurType);
 }
 
 std::vector<double> WebARKitTracker::getOutputData() { return _trackerImpl->getOutputData(); }
diff --git a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.h b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.h
index 4e34920..edd4c5e 100644
--- a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.h
+++ b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitTracker.h
@@ -27,7 +27,7 @@ class WebARKitTracker {
 
     void initTracker(uchar* refData, size_t refCols, size_t refRows, ColorSpace colorSpace);
 
-    void processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType, bool enableBlur);
+    void processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType);
 
     std::vector<double> getOutputData();
 
diff --git a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitUtils.h b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitUtils.h
index 4debaeb..a6f4a3f 100644
--- a/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitUtils.h
+++ b/WebARKit/WebARKitTrackers/WebARKitOpticalTracking/include/WebARKitTrackers/WebARKitOpticalTracking/WebARKitUtils.h
@@ -125,17 +125,21 @@ static auto convert2Grayscale(uchar* refData, size_t refCols, size_t refRows, Co
         cv::Mat colorFrame(refRows, refCols, CV_8UC4, refData);
         refGray.create(refRows, refCols, CV_8UC1);
         cv::cvtColor(colorFrame, refGray, cv::COLOR_RGBA2GRAY);
+        WEBARKIT_LOGd("convert to GRAY from RGBA !!\n");
     } break;
     case ColorSpace::RGB: {
         cv::Mat colorFrame(refRows, refCols, CV_8UC3, refData);
         refGray.create(refRows, refCols, CV_8UC1);
         cv::cvtColor(colorFrame, refGray, cv::COLOR_RGB2GRAY);
+        WEBARKIT_LOGd("convert to GRAY from RGB !!\n");
     } break;
     case ColorSpace::GRAY: {
         refGray = cv::Mat(refRows, refCols, CV_8UC1, refData);
+        WEBARKIT_LOGd("no need to convert to GRAY!!\n");
     } break;
     default: {
         refGray = cv::Mat(refRows, refCols, CV_8UC1, refData);
+        WEBARKIT_LOGd("Default: no need to convert to GRAY!!\n");
     }
     }
 
diff --git a/WebARKit/include/WebARKitManager.h b/WebARKit/include/WebARKitManager.h
index a9f9014..6472aad 100644
--- a/WebARKit/include/WebARKitManager.h
+++ b/WebARKit/include/WebARKitManager.h
@@ -98,7 +98,7 @@ class WebARKitManager {
 
     bool shutdown();
 
-    void processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType, bool enableBlur);
+    void processFrameData(uchar* frameData, size_t frameCols, size_t frameRows, ColorSpace colorSpace, BLUR_TYPE blurType);
 
     std::vector<double> getOutputData();