From 3f1eeba39d2f7dd7d18bdb05faf66285a2878e47 Mon Sep 17 00:00:00 2001
From: Philipp Hasper <vcs@hasper.info>
Date: Thu, 18 Feb 2016 17:58:28 +0100
Subject: [PATCH] findHomography sets output mask to all zeros in case of no
 inlier

---
 modules/calib3d/src/fundam.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/calib3d/src/fundam.cpp b/modules/calib3d/src/fundam.cpp
index 57e3699..20803a5 100644
--- a/modules/calib3d/src/fundam.cpp
+++ b/modules/calib3d/src/fundam.cpp
@@ -411,7 +411,13 @@ cv::Mat cv::findHomography( InputArray _points1, InputArray _points2,
             tempMask.copyTo(_mask);
     }
     else
+    {
         H.release();
+        if(_mask.needed() ) {
+            tempMask = Mat::zeros(npoints >= 0 ? npoints : 0, 1, CV_8U);
+            tempMask.copyTo(_mask);
+        }
+    }
 
     return H;
 }
-- 
2.7.4