From 5f8f56ea0e7266089bab12d500100d9ca57af366 Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <vadim.pisarevsky@gmail.com>
Date: Thu, 28 May 2015 17:24:22 +0300
Subject: [PATCH] report an error when trying to load HOG cascade

---
 modules/objdetect/src/cascadedetect.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/objdetect/src/cascadedetect.cpp b/modules/objdetect/src/cascadedetect.cpp
index 63edd0d8c5..5cc861e0f5 100644
--- a/modules/objdetect/src/cascadedetect.cpp
+++ b/modules/objdetect/src/cascadedetect.cpp
@@ -1402,8 +1402,10 @@ bool CascadeClassifierImpl::Data::read(const FileNode &root)
     else if( featureTypeStr == CC_LBP )
         featureType = FeatureEvaluator::LBP;
     else if( featureTypeStr == CC_HOG )
+    {
         featureType = FeatureEvaluator::HOG;
-
+        CV_Error(Error::StsNotImplemented, "HOG cascade is not supported in 3.0");
+    }
     else
         return false;