From 62c1a5a15232ddc9cc97b46d0d3c07a4c5b35d9e Mon Sep 17 00:00:00 2001
From: Vitaly Tuzov <terfendail@mediana.jetos.com>
Date: Mon, 15 Aug 2016 11:28:52 +0300
Subject: [PATCH] Replaced quiet return from MSER:detectRegion function with
 exeption throwing to notify user in case small image is processed

---
 modules/features2d/src/mser.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/features2d/src/mser.cpp b/modules/features2d/src/mser.cpp
index 72b2314..4f2cab1 100644
--- a/modules/features2d/src/mser.cpp
+++ b/modules/features2d/src/mser.cpp
@@ -1025,7 +1025,7 @@ void MSER_Impl::detectRegions( InputArray _src, vector<vector<Point> >& msers, v
     bboxes.clear();
 
     if( src.rows < 3 || src.cols < 3 )
-        return;
+        CV_Error(Error::StsBadArg, "Input image is too small. Expected at least 3x3");
 
     Size size = src.size();
 
-- 
2.7.4