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// Copyright (c) 2020, Pierre Moulon
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the name of the copyright holder nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef POSELIB_RELPOSE_8PT_H_
#define POSELIB_RELPOSE_8PT_H_
#include "PoseLib/camera_pose.h"
#include <Eigen/Dense>
namespace poselib {
// Relative pose from eight to n bearing vector correspondences.
// Port from OpenMVG (Essential_matrix computation then decomposition in 4 pose [R|t]).
int relpose_8pt(const std::vector<Eigen::Vector3d> &x1, const std::vector<Eigen::Vector3d> &x2,
CameraPoseVector *output);
// Computation of essential matrix from eight to n bearing vector correspondences.
// See page 294 in [HZ] Result 11.1.
// [HZ] Multiple View Geometry - Richard Hartley, Andrew Zisserman - second edition
// Port from OpenMVG
void essential_matrix_8pt(const std::vector<Eigen::Vector3d> &x1, const std::vector<Eigen::Vector3d> &x2,
Eigen::Matrix3d *essential_matrix);
}; // namespace poselib
#endif
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