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feature-extraction-opencl/include/sparse_img_align_gpu.h
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2021-08-23 15:35:30 +02:00

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// This file is part of SVO - Semi-direct Visual Odometry.
//
// Copyright (C) 2014 Christian Forster <forster at ifi dot uzh dot ch>
// (Robotics and Perception Group, University of Zurich, Switzerland).
//
// SVO 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 3 of the License, or any later version.
//
// SVO 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, see <http://www.gnu.org/licenses/>.
#ifndef VIO_SPARSE_IMG_ALIGN_GPU_H_
#define VIO_SPARSE_IMG_ALIGN_GPU_H_
#include <nlls_solver.h>
#include <cl_class.h>
#include <math_utils.h>
#include <algorithm>
#include <sophus/se2.h>
namespace vio {
class Feature;
/// Optimize the pose of the frame by minimizing the photometric error of feature patches.
class SparseImgAlignGpu : public vk::NLLSSolver<3, Sophus::SE2>
{
static const int patch_halfsize_ = 12;
static const int patch_size_ = 12*patch_halfsize_;
static const int patch_area_ = patch_size_*patch_size_;
public:
SparseImgAlignGpu(
int max_level,
int min_level,
int n_iter,
Method method,
bool verbose,
opencl* residual);
size_t run();
void data_reader(std::string filename, float *rp, float *cp, float *c, float *fts, float* fts_px);
int feature_counter(std::string filename);
// FILE* data= nullptr;
protected:
int level_; //!< current pyramid level on which the optimization runs.
int max_level_; //!< coarsest pyramid level for the alignment.
int min_level_; //!< finest pyramid level for the alignment.
size_t feature_counter_=0;
opencl* residual_= nullptr;
// cache:
std::vector<bool> visible_fts_;
virtual double computeResiduals(const ModelType& model,
bool linearize_system,
bool compute_weight_scale) {
return 0.0;
};
virtual double computeResiduals(bool linearize_system, bool compute_weight_scale = false);
virtual int solve();
virtual void update();
virtual void update(const ModelType& old_model, ModelType& new_model) { };
virtual void startIteration();
virtual void finishIteration();
};
} // namespace vio
#endif // VIO_SPARSE_IMG_ALIGN_GPU_H_