Merge pull request #837 from savuor:fix/bif_nan_sqrt

8 years ago · dd55064f8e
parent f3ca1a2f08 8b252a822b
commit dd55064f8e
1 changed files with 1 additions and 1 deletions
--- a/modules/face/src/bif.cpp
+++ b/modules/face/src/bif.cpp
@ -207,7 +207,7 @@ void BIFImpl::computeUnit(int unit_idx, const cv::Mat &img,

            double sd = sumsq.at<double>(y1,x1) - sumsq.at<double>(y1,x0)
                        - sumsq.at<double>(y0,x1) + sumsq.at<double>(y0,x0);
-            sd = sqrt(sd / area - mean * mean);
+            sd = sqrt(std::max(0.0, sd / area - mean * mean));

            dst.at<float>(pos) = static_cast<float>(sd);
        }