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/* Copyright (c) 2012 Patrick Ruoff
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "trans_calib.h"
TranslationCalibrator::TranslationCalibrator()
{
reset();
}
void TranslationCalibrator::reset()
{
P = cv::Matx66f::zeros();
y = cv::Vec6f(0,0,0, 0,0,0);
}
void TranslationCalibrator::update(const cv::Matx33f& R_CM_k, const cv::Vec3f& t_CM_k)
{
cv::Matx<float, 6,3> H_k_T = cv::Matx<float, 6,3>::zeros();
for (int i=0; i<3; ++i) {
for (int j=0; j<3; ++j) {
H_k_T(i,j) = R_CM_k(j,i);
}
}
for (int i=0; i<3; ++i)
{
H_k_T(3+i,i) = 1.0;
}
P += H_k_T * H_k_T.t();
y += H_k_T * t_CM_k;
}
cv::Vec3f TranslationCalibrator::get_estimate()
{
cv::Vec6f x = P.inv() * y;
return cv::Vec3f(-x[0], -x[1], -x[2]);
}
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