calib3d: check input values in dls

0aac17d9 · Maksim Shabunin · f44a0960 · 0aac17d9
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modules/calib3d/src/dls.cpp modules/calib3d/src/dls.cpp +1 -0

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--- a/modules/calib3d/src/dls.cpp
+++ b/modules/calib3d/src/dls.cpp
@@ -653,6 +653,7 @@ bool dls::is_empty(const cv::Mat * M)
 bool dls::positive_eigenvalues(const cv::Mat * eigenvalues)
 {
+    CV_Assert(eigenvalues && !eigenvalues->empty());
    cv::MatConstIterator_<double> it = eigenvalues->begin<double>();
    return *(it) > 0 && *(it+1) > 0 && *(it+2) > 0;
 }