From c8cad0857e04d457686e16960b0e2f84e0eac4de Mon Sep 17 00:00:00 2001
From: Andy Maloney <asmaloney@gmail.com>
Date: Sat, 2 Feb 2013 16:09:10 -0500
Subject: [PATCH] Remove unused constructor Add checks for valid values Fix
 wording on some errors

---
 modules/features2d/src/evaluation.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/modules/features2d/src/evaluation.cpp b/modules/features2d/src/evaluation.cpp
index ca5fe26cf7..1724b0176a 100644
--- a/modules/features2d/src/evaluation.cpp
+++ b/modules/features2d/src/evaluation.cpp
@@ -241,7 +241,6 @@ static void filterEllipticKeyPointsByImageSize( vector<EllipticKeyPoint>& keypoi
 
 struct IntersectAreaCounter
 {
-    IntersectAreaCounter() : bua(0), bna(0) {}
     IntersectAreaCounter( float _dr, int _minx,
                           int _miny, int _maxy,
                           const Point2f& _diff,
@@ -257,6 +256,9 @@ struct IntersectAreaCounter
 
     void operator()( const BlockedRange& range )
     {
+        CV_Assert( miny < maxy );
+        CV_Assert( dr > FLT_EPSILON );
+        
         int temp_bua = bua, temp_bna = bna;
         for( int i = range.begin(); i != range.end(); i++ )
         {
@@ -461,7 +463,7 @@ void cv::evaluateFeatureDetector( const Mat& img1, const Mat& img2, const Mat& H
     keypoints2 = _keypoints2 != 0 ? _keypoints2 : &buf2;
 
     if( (keypoints1->empty() || keypoints2->empty()) && fdetector.empty() )
-        CV_Error( CV_StsBadArg, "fdetector must be no empty when keypoints1 or keypoints2 is empty" );
+        CV_Error( CV_StsBadArg, "fdetector must not be empty when keypoints1 or keypoints2 is empty" );
 
     if( keypoints1->empty() )
         fdetector->detect( img1, *keypoints1 );
@@ -572,10 +574,10 @@ void cv::evaluateGenericDescriptorMatcher( const Mat& img1, const Mat& img2, con
     correctMatches1to2Mask = _correctMatches1to2Mask != 0 ? _correctMatches1to2Mask : &buf2;
 
     if( keypoints1.empty() )
-        CV_Error( CV_StsBadArg, "keypoints1 must be no empty" );
+        CV_Error( CV_StsBadArg, "keypoints1 must not be empty" );
 
     if( matches1to2->empty() && dmatcher.empty() )
-        CV_Error( CV_StsBadArg, "dmatch must be no empty when matches1to2 is empty" );
+        CV_Error( CV_StsBadArg, "dmatch must not be empty when matches1to2 is empty" );
 
     bool computeKeypoints2ByPrj = keypoints2.empty();
     if( computeKeypoints2ByPrj )