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Diffstat (limited to 'extern/libmv/libmv/tracking/trklt_region_tracker.h')
-rw-r--r-- | extern/libmv/libmv/tracking/trklt_region_tracker.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/extern/libmv/libmv/tracking/trklt_region_tracker.h b/extern/libmv/libmv/tracking/trklt_region_tracker.h new file mode 100644 index 00000000000..5046e0f069d --- /dev/null +++ b/extern/libmv/libmv/tracking/trklt_region_tracker.h @@ -0,0 +1,65 @@ +// Copyright (c) 2011 libmv authors. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to +// deal in the Software without restriction, including without limitation the +// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +// IN THE SOFTWARE. + +#ifndef LIBMV_REGION_TRACKING_TRKLT_REGION_TRACKER_H_ +#define LIBMV_REGION_TRACKING_TRKLT_REGION_TRACKER_H_ + +#include "libmv/image/image.h" +#include "libmv/tracking/region_tracker.h" + +namespace libmv { + +// An improved KLT algorithm that enforces that the tracking is time-reversible +// [1]. This is not the same as the "symmetric" KLT that is sometimes used. +// Anecdotally, this tracks much more consistently than vanilla KLT. +// +// [1] H. Wu, R. Chellappa, and A. Sankaranarayanan and S. Kevin Zhou. Robust +// visual tracking using the time-reversibility constraint. International +// Conference on Computer Vision (ICCV), Rio de Janeiro, October 2007. +// +struct TrkltRegionTracker : public RegionTracker { + TrkltRegionTracker() + : half_window_size(4), + max_iterations(100), + min_determinant(1e-6), + min_update_squared_distance(1e-6), + sigma(0.9), + lambda(0.05) {} + + virtual ~TrkltRegionTracker() {} + + // Tracker interface. + virtual bool Track(const FloatImage &image1, + const FloatImage &image2, + double x1, double y1, + double *x2, double *y2) const; + + // No point in creating getters or setters. + int half_window_size; + int max_iterations; + double min_determinant; + double min_update_squared_distance; + double sigma; + double lambda; +}; + +} // namespace libmv + +#endif // LIBMV_REGION_TRACKING_TRKLT_REGION_TRACKER_H_ |