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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2011 Blender Foundation.
* All rights reserved.
*
* Contributor(s): Blender Foundation,
* Sergey Sharybin
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "intern/track_region.h"
#include "intern/image.h"
#include "intern/utildefines.h"
#include "libmv/image/image.h"
#include "libmv/tracking/track_region.h"
/* define this to generate PNG images with content of search areas
tracking between which failed */
#undef DUMP_FAILURE
/* define this to generate PNG images with content of search areas
on every itteration of tracking */
#undef DUMP_ALWAYS
using libmv::FloatImage;
using libmv::TrackRegionOptions;
using libmv::TrackRegionResult;
using libmv::TrackRegion;
void libmv_configureTrackRegionOptions(
const libmv_TrackRegionOptions& options,
TrackRegionOptions* track_region_options) {
switch (options.motion_model) {
#define LIBMV_CONVERT(the_model) \
case TrackRegionOptions::the_model: \
track_region_options->mode = TrackRegionOptions::the_model; \
break;
LIBMV_CONVERT(TRANSLATION)
LIBMV_CONVERT(TRANSLATION_ROTATION)
LIBMV_CONVERT(TRANSLATION_SCALE)
LIBMV_CONVERT(TRANSLATION_ROTATION_SCALE)
LIBMV_CONVERT(AFFINE)
LIBMV_CONVERT(HOMOGRAPHY)
#undef LIBMV_CONVERT
}
track_region_options->minimum_correlation = options.minimum_correlation;
track_region_options->max_iterations = options.num_iterations;
track_region_options->sigma = options.sigma;
track_region_options->num_extra_points = 1;
track_region_options->image1_mask = NULL;
track_region_options->use_brute_initialization = options.use_brute;
/* TODO(keir): This will make some cases better, but may be a regression until
* the motion model is in. Since this is on trunk, enable it for now.
*
* TODO(sergey): This gives much worse results on mango footage (see 04_2e)
* so disabling for now for until proper prediction model is landed.
*
* The thing is, currently blender sends input coordinates as the guess to
* region tracker and in case of fast motion such an early out ruins the track.
*/
track_region_options->attempt_refine_before_brute = false;
track_region_options->use_normalized_intensities = options.use_normalization;
}
void libmv_regionTrackergetResult(const TrackRegionResult& track_region_result,
libmv_TrackRegionResult* result) {
result->termination = (int) track_region_result.termination;
result->termination_reason = "";
result->correlation = track_region_result.correlation;
}
int libmv_trackRegion(const libmv_TrackRegionOptions* options,
const float* image1,
int image1_width,
int image1_height,
const float* image2,
int image2_width,
int image2_height,
const double* x1,
const double* y1,
libmv_TrackRegionResult* /*result*/,
double* x2,
double* y2) {
double xx1[5], yy1[5];
double xx2[5], yy2[5];
bool tracking_result = false;
// Convert to doubles for the libmv api. The four corners and the center.
for (int i = 0; i < 5; ++i) {
xx1[i] = x1[i];
yy1[i] = y1[i];
xx2[i] = x2[i];
yy2[i] = y2[i];
}
TrackRegionOptions track_region_options;
FloatImage image1_mask;
libmv_configureTrackRegionOptions(*options, &track_region_options);
if (options->image1_mask) {
libmv_floatBufferToFloatImage(options->image1_mask,
image1_width,
image1_height,
1,
&image1_mask);
track_region_options.image1_mask = &image1_mask;
}
// Convert from raw float buffers to libmv's FloatImage.
FloatImage old_patch, new_patch;
libmv_floatBufferToFloatImage(image1,
image1_width,
image1_height,
1,
&old_patch);
libmv_floatBufferToFloatImage(image2,
image2_width,
image2_height,
1,
&new_patch);
TrackRegionResult track_region_result;
TrackRegion(old_patch, new_patch,
xx1, yy1,
track_region_options,
xx2, yy2,
&track_region_result);
// Convert to floats for the blender api.
for (int i = 0; i < 5; ++i) {
x2[i] = xx2[i];
y2[i] = yy2[i];
}
// TODO(keir): Update the termination string with failure details.
if (track_region_result.termination == TrackRegionResult::CONVERGENCE ||
track_region_result.termination == TrackRegionResult::NO_CONVERGENCE) {
tracking_result = true;
}
// Debug dump of patches.
#if defined(DUMP_FAILURE) || defined(DUMP_ALWAYS)
bool need_dump = !tracking_result;
# ifdef DUMP_ALWAYS
need_dump = true;
# endif
if (need_dump) {
libmv_saveImage(old_patch, "old_patch", x1[4], y1[4]);
libmv_saveImage(new_patch, "new_patch", x2[4], y2[4]);
if (options->image1_mask) {
libmv_saveImage(image1_mask, "mask", x2[4], y2[4]);
}
}
#endif
return tracking_result;
}
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