diff --git a/opencv/cv.go b/opencv/cv.go
index c41ddcc..2e5e689 100644
--- a/opencv/cv.go
+++ b/opencv/cv.go
@@ -23,7 +23,11 @@ const (
 	CV_BGR2BGRA  = C.CV_BGR2BGRA
 	CV_RGBA2BGRA = C.CV_RGBA2BGRA
 
-	CV_BLUR = C.CV_BLUR
+	CV_BLUR_NO_SCALE = C.CV_BLUR_NO_SCALE
+	CV_BLUR          = C.CV_BLUR
+	CV_GAUSSIAN      = C.CV_GAUSSIAN
+	CV_MEDIAN        = C.CV_MEDIAN
+	CV_BILATERAL     = C.CV_BILATERAL
 
 	CV_8U  = C.CV_8U
 	CV_8S  = C.CV_8S
diff --git a/opencv/cxcore.go b/opencv/cxcore.go
index 610d933..7abf3ba 100644
--- a/opencv/cxcore.go
+++ b/opencv/cxcore.go
@@ -523,6 +523,15 @@ func Not(src, dst *IplImage) {
 /****************************************************************************************\
 *                                    Array Statistics                         *
 \****************************************************************************************/
+// CvScalar cvAvg(const CvArr* arr, const CvArr* mask=NULL )
+func (src *IplImage) Avg(mask *IplImage) Scalar {
+	return (Scalar)(C.cvAvg(unsafe.Pointer(src), unsafe.Pointer(mask)))
+}
+
+// cvEqualizeHist(const CvArr* src, CvArr* dst)
+func (src *IplImage) EqualizeHist(dst *IplImage) {
+	C.cvEqualizeHist(unsafe.Pointer(src), unsafe.Pointer(dst))
+}
 
 /****************************************************************************************\
 *                      Discrete Linear Transforms and Related Functions       *