Merge pull request #7183 from mself:LMeDS_median_optimization

9 years ago · a5dcefd50e
parent 28db4a2207 7de2e1e795
commit a5dcefd50e
1 changed files with 2 additions and 4 deletions
--- a/modules/calib3d/src/ptsetreg.cpp
+++ b/modules/calib3d/src/ptsetreg.cpp
@ -344,10 +344,8 @@ public:
                else
                    errf = err;
                CV_Assert( errf.isContinuous() && errf.type() == CV_32F && (int)errf.total() == count );
-                std::sort(errf.ptr<int>(), errf.ptr<int>() + count);
-
-                double median = count % 2 != 0 ?
-                errf.at<float>(count/2) : (errf.at<float>(count/2-1) + errf.at<float>(count/2))*0.5;
+                std::nth_element(errf.ptr<int>(), errf.ptr<int>() + count/2, errf.ptr<int>() + count);
+                double median = errf.at<float>(count/2);

                if( median < minMedian )
                {