From 904f4bb4d8cf7083fd6587cc9b4851a81765d77f Mon Sep 17 00:00:00 2001
From: Mathieu Labbe <matlabbe@gmail.com>
Date: Sat, 21 May 2016 14:56:25 -0400
Subject: [PATCH] Features2d: updated computeROI() to be more precise

---
 corelib/src/Features2d.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/corelib/src/Features2d.cpp b/corelib/src/Features2d.cpp
index e7c9a153..813aa4db 100644
--- a/corelib/src/Features2d.cpp
+++ b/corelib/src/Features2d.cpp
@@ -308,10 +308,9 @@ cv::Rect Feature2D::computeRoi(const cv::Mat & image, const std::vector<float> &
 		}
 
 		//right roi
-		roi.width = width - roi.x;
 		if(roiRatios[1] > 0 && roiRatios[1] < 1 - roiRatios[0])
 		{
-			roi.width -= width * roiRatios[1];
+			roi.width -= width * roiRatios[1] + width * roiRatios[0];
 		}
 
 		//top roi
@@ -321,10 +320,9 @@ cv::Rect Feature2D::computeRoi(const cv::Mat & image, const std::vector<float> &
 		}
 
 		//bottom roi
-		roi.height = height - roi.y;
 		if(roiRatios[3] > 0 && roiRatios[3] < 1 - roiRatios[2])
 		{
-			roi.height -= height * roiRatios[3];
+			roi.height -= height * roiRatios[3] + height * roiRatios[2];
 		}
 		UDEBUG("roi = %d, %d, %d, %d", roi.x, roi.y, roi.width, roi.height);