From d5e64f4eb2bf2ad40d55a8a7e658acd138c2a140 Mon Sep 17 00:00:00 2001
From: Camille Barneaud <camillebarneaud@gmail.com>
Date: Sat, 19 Aug 2017 15:03:16 +0200
Subject: [PATCH] Avoid HOGDescriptor with sigma = 0

Solve #9307.
---
 modules/objdetect/src/hog.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/objdetect/src/hog.cpp b/modules/objdetect/src/hog.cpp
index ed78e3bf52..bf3316fb97 100644
--- a/modules/objdetect/src/hog.cpp
+++ b/modules/objdetect/src/hog.cpp
@@ -100,7 +100,7 @@ size_t HOGDescriptor::getDescriptorSize() const
 
 double HOGDescriptor::getWinSigma() const
 {
-    return winSigma >= 0 ? winSigma : (blockSize.width + blockSize.height)/8.;
+    return winSigma > 0 ? winSigma : (blockSize.width + blockSize.height)/8.;
 }
 
 bool HOGDescriptor::checkDetectorSize() const