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Diffstat (limited to 'intern/libmv/libmv/tracking/retrack_region_tracker.cc')
-rw-r--r-- | intern/libmv/libmv/tracking/retrack_region_tracker.cc | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/intern/libmv/libmv/tracking/retrack_region_tracker.cc b/intern/libmv/libmv/tracking/retrack_region_tracker.cc new file mode 100644 index 00000000000..4d230086d28 --- /dev/null +++ b/intern/libmv/libmv/tracking/retrack_region_tracker.cc @@ -0,0 +1,47 @@ +// 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. + +#include "libmv/tracking/retrack_region_tracker.h" + +#include <cmath> +#include <vector> + +namespace libmv { + +bool RetrackRegionTracker::Track(const FloatImage &image1, + const FloatImage &image2, + double x1, double y1, + double *x2, double *y2) const { + // Track forward, getting x2 and y2. + if (!tracker_->Track(image1, image2, x1, y1, x2, y2)) { + return false; + } + // Now track x2 and y2 backward, to get xx1 and yy1 which, if the track is + // good, should match x1 and y1 (but may not if the track is bad). + double xx1 = *x2, yy1 = *x2; + if (!tracker_->Track(image2, image1, *x2, *y2, &xx1, &yy1)) { + return false; + } + double dx = xx1 - x1; + double dy = yy1 - y1; + return sqrt(dx * dx + dy * dy) < tolerance_; +} + +} // namespace libmv |