diff --git a/example/main.cpp b/example/main.cpp
index 03062f8..ab462e3 100644
--- a/example/main.cpp
+++ b/example/main.cpp
@@ -3,6 +3,7 @@
 #include <fstream>
 #include "blob.h"
 #include "BlobResult.h"
+#include "highgui.h" //include it to use GUI functions.
 
 const int NUMCORES = 2;
 using namespace std;
diff --git a/library/BlobResult.cpp b/library/BlobResult.cpp
index 56165c6..3ef8dd1 100644
--- a/library/BlobResult.cpp
+++ b/library/BlobResult.cpp
@@ -85,12 +85,13 @@ CBlobResult::CBlobResult(IplImage *source, IplImage *mask,int numThreads)
 {
 	if(mask!=NULL){
 		Mat temp = Mat::zeros(Size(source->width,source->height),CV_8UC1);
-		Mat(source).copyTo(temp,Mat(mask));
+		cvarrToMat(source).copyTo(temp,cvarrToMat(mask));
 		compLabeler.set(numThreads,temp);
 		compLabeler.doLabeling(m_blobs);
 	}
 	else{
-		compLabeler.set(numThreads,source);
+		Mat temp = Mat::zeros(Size(source->width,source->height),CV_8UC1);
+		compLabeler.set(numThreads,temp);
 		compLabeler.doLabeling(m_blobs);
 	}
 }
diff --git a/library/blob.cpp b/library/blob.cpp
index ec660bd..fd762ec 100644
--- a/library/blob.cpp
+++ b/library/blob.cpp
@@ -477,7 +477,7 @@ double CBlob::Mean( IplImage *image )
 	offset.x = -m_boundingBox.x;
 	offset.y = -m_boundingBox.y;
 
-  Mat mask_mat(mask);
+	Mat mask_mat = cvarrToMat(mask);
       
 	//If joined
 	if(isJoined){
@@ -787,9 +787,9 @@ CvBox2D CBlob::GetEllipse()
 void CBlob::FillBlob( IplImage *image, CvScalar color, int offsetX , int offsetY, bool intContours, const IplImage *srcImage) 					  
 {
 	if(srcImage==NULL)
-		FillBlob(Mat(image),color,offsetX,offsetY,intContours,Mat());
+		FillBlob(cvarrToMat(image),color,offsetX,offsetY,intContours,Mat());
 	else
-		FillBlob(Mat(image),color,offsetX,offsetY,intContours,Mat(srcImage));
+		FillBlob(cvarrToMat(image),color,offsetX,offsetY,intContours,cvarrToMat(srcImage));
 }
 void CBlob::FillBlob( Mat image, CvScalar color, int offsetX, int offsetY, bool intContours, const Mat srcImage){
 	CV_FUNCNAME("CBlob::FillBlob");