From 9d04a7aba9dbab0823b936958303edcc7b5e657c Mon Sep 17 00:00:00 2001
From: Konstantin Matskevich <konstantin.matskevich@itseez.com>
Date: Wed, 25 Dec 2013 15:02:56 +0400
Subject: [PATCH] bugfix in equalizeHist

---
 modules/imgproc/src/histogram.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/imgproc/src/histogram.cpp b/modules/imgproc/src/histogram.cpp
index 7849d5175c..50627b4b89 100644
--- a/modules/imgproc/src/histogram.cpp
+++ b/modules/imgproc/src/histogram.cpp
@@ -3169,7 +3169,7 @@ static bool ocl_calcHist(InputArray _src, OutputArray _hist)
 
 static bool ocl_equalizeHist(InputArray _src, OutputArray _dst)
 {
-    size_t wgs = ocl::Device::getDefault().maxWorkGroupSize();
+    size_t wgs = std::min<size_t>(ocl::Device::getDefault().maxWorkGroupSize(), BINS);
 
     // calculation of histogram
     UMat hist;