From bd447c0f02ff3b40b2f091876d8e4c8870899d9b Mon Sep 17 00:00:00 2001
From: oqtvs <oqtvs@users.noreply.github.com>
Date: Mon, 30 Jan 2017 22:21:47 -0200
Subject: [PATCH] Fixed issue 975 - fixed visual studio 2010 build errors on
 module xfeatures2d

---
 modules/xfeatures2d/src/boostdesc.cpp              | 10 +++++-----
 modules/xfeatures2d/src/harris_lapace_detector.cpp |  2 +-
 modules/xfeatures2d/src/pct_signatures.cpp         |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/modules/xfeatures2d/src/boostdesc.cpp b/modules/xfeatures2d/src/boostdesc.cpp
index 89b4cfbce..5f99c5321 100644
--- a/modules/xfeatures2d/src/boostdesc.cpp
+++ b/modules/xfeatures2d/src/boostdesc.cpp
@@ -232,7 +232,7 @@ static void computeGradientMaps( const Mat& im,
               break;
 
             case ASSIGN_HARD_MAGN:
-              gradMap[index].at<uchar>(i,j) = (uchar) round( gradMagnitude );
+              gradMap[index].at<uchar>(i,j) = (uchar) cvRound( gradMagnitude );
               break;
 
             case ASSIGN_BILINEAR:
@@ -240,8 +240,8 @@ static void computeGradientMaps( const Mat& im,
               index2 = ( index2 == orientQuant ) ? 0 : index2;
               binCenter  = ( index + 0.5f ) * binSize;
               weight = 1 - abs( theta - binCenter ) / binSize;
-              gradMap[index ].at<uchar>(i,j) = (uchar) round( 255 * weight );
-              gradMap[index2].at<uchar>(i,j) = (uchar) round( 255 * ( 1 - weight ) );
+              gradMap[index ].at<uchar>(i,j) = (uchar) cvRound( 255 * weight );
+              gradMap[index2].at<uchar>(i,j) = (uchar) cvRound( 255 * ( 1 - weight ) );
               break;
 
             case ASSIGN_SOFT:
@@ -251,7 +251,7 @@ static void computeGradientMaps( const Mat& im,
                 binCenter = ( index2 + 0.5f ) * binSize;
                 weight = cos( theta - binCenter );
                 weight = ( weight < 0 ) ? 0 : weight;
-                gradMap[index2].at<uchar>(i,j) = (uchar) round( 255 * weight );
+                gradMap[index2].at<uchar>(i,j) = (uchar) cvRound( 255 * weight );
               }
               break;
 
@@ -262,7 +262,7 @@ static void computeGradientMaps( const Mat& im,
                 binCenter = ( index2 + 0.5f ) * binSize;
                 weight = cos( theta - binCenter );
                 weight = ( weight < 0 ) ? 0 : weight;
-                gradMap[index2].at<uchar>(i,j) = (uchar) round( gradMagnitude * weight );
+                gradMap[index2].at<uchar>(i,j) = (uchar) cvRound( gradMagnitude * weight );
               }
               break;
           } // end switch
diff --git a/modules/xfeatures2d/src/harris_lapace_detector.cpp b/modules/xfeatures2d/src/harris_lapace_detector.cpp
index a76dfd37a..6c68117c4 100644
--- a/modules/xfeatures2d/src/harris_lapace_detector.cpp
+++ b/modules/xfeatures2d/src/harris_lapace_detector.cpp
@@ -104,7 +104,7 @@ void Pyramid::build(const Mat& img, bool DOG)
 
     Size imgSize = img.size();
     int minSize = MIN(imgSize.width, imgSize.height);
-    int octavesN = MIN(params.octavesN, int(floor(log((double) minSize)/log(2))));
+    int octavesN = MIN(params.octavesN, int(floor(log((double) minSize)/log((float)2))));
     float sigma0 = params.sigma0;
     float sigma = sigma0;
     int layersN = params.layersN + 3;
diff --git a/modules/xfeatures2d/src/pct_signatures.cpp b/modules/xfeatures2d/src/pct_signatures.cpp
index da0b57c45..100e1e1a3 100644
--- a/modules/xfeatures2d/src/pct_signatures.cpp
+++ b/modules/xfeatures2d/src/pct_signatures.cpp
@@ -397,7 +397,7 @@ namespace cv
                 break;
             case REGULAR:
             {
-                int gridSize = (int)ceil(sqrt(count));
+                int gridSize = (int)ceil(sqrt((float)count));
                 const float step = 1.0f / gridSize;
                 const float halfStep = step / 2;
                 float x = halfStep;