diff options
| -rw-r--r-- | tracker-pt/module/point_extractor.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tracker-pt/module/point_extractor.cpp b/tracker-pt/module/point_extractor.cpp index 71586eb1..fbb830d3 100644 --- a/tracker-pt/module/point_extractor.cpp +++ b/tracker-pt/module/point_extractor.cpp @@ -220,8 +220,9 @@ void PointExtractor::threshold_image(const cv::Mat& frame_gray, cv::Mat1b& outpu float const* const __restrict ptr = hist.ptr<float>(0); const unsigned area = unsigned(iround(3 * pi * radius*radius)); const unsigned sz = unsigned(hist.cols * hist.rows); - unsigned thres = 1; - for (unsigned i = sz-1, cnt = 0; i > 1; i--) + constexpr unsigned min_thres = 64; + unsigned thres = min_thres; + for (unsigned i = sz-1, cnt = 0; i > 32; i--) { cnt += (unsigned)ptr[i]; if (cnt >= area) |