void readConfigVar_PoseRxyz(const string &s, vpHomogeneousMatrix &M)
{
vpColVector v(6);
vpIoTools::readConfigVar(s, v);
vpTranslationVector t(v[0], v[1], v[2]);
vpRxyzVector r(v[3], v[4], v[5]);
vpRotationMatrix R(r);
M.buildFrom(t, R);
}
void convertGMPoseToVispHMat(const geometry_msgs::Pose &pose,
vpHomogeneousMatrix &HMatrix)
{
tf::Quaternion q;
tf::quaternionMsgToTF(pose.orientation, q);
double angle = q.getAngle();
HMatrix.buildFrom(pose.position.x,
pose.position.y,
pose.position.z,
angle*q.getAxis().x(),
angle*q.getAxis().y(),
angle*q.getAxis().z()
);
}
void convertTFtoVispHMat(const tf::StampedTransform &TFtransform,
vpHomogeneousMatrix &HMatrix)
{
double Angle; // Theta U angle of the transform
Angle = TFtransform.getRotation().getAngle();
HMatrix.buildFrom(TFtransform.getOrigin().x(),
TFtransform.getOrigin().y(),
TFtransform.getOrigin().z(),
Angle*TFtransform.getRotation().getAxis().x(),
Angle*TFtransform.getRotation().getAxis().y(),
Angle*TFtransform.getRotation().getAxis().z()
);
}
/*!
Compute the pose \e cMo from the 3D coordinates of the points \e point and
their corresponding 2D coordinates \e dot. The pose is computed using a Lowe
non linear method.
\param point : 3D coordinates of the points.
\param dot : 2D coordinates of the points.
\param ndot : Number of points or dots used for the pose estimation.
\param cam : Intrinsic camera parameters.
\param cMo : Homogeneous matrix in output describing the transformation
between the camera and object frame.
\param cto : Translation in ouput extracted from \e cMo.
\param cro : Rotation in ouput extracted from \e cMo.
\param init : Indicates if the we have to estimate an initial pose with
Lagrange or Dementhon methods.
*/
void compute_pose(vpPoint point[], vpDot2 dot[], int ndot,
vpCameraParameters cam,
vpHomogeneousMatrix &cMo,
vpTranslationVector &cto,
vpRxyzVector &cro, bool init)
{
vpHomogeneousMatrix cMo_dementhon; // computed pose with dementhon
vpHomogeneousMatrix cMo_lagrange; // computed pose with dementhon
vpRotationMatrix cRo;
vpPose pose;
vpImagePoint cog;
for (int i=0; i < ndot; i ++) {
double x=0, y=0;
cog = dot[i].getCog();
vpPixelMeterConversion::convertPoint(cam,
cog,
x, y) ; //pixel to meter conversion
point[i].set_x(x) ;//projection perspective p
point[i].set_y(y) ;
pose.addPoint(point[i]) ;
}
if (init == true) {
pose.computePose(vpPose::DEMENTHON, cMo_dementhon) ;
// Compute and return the residual expressed in meter for the pose matrix
// 'cMo'
double residual_dementhon = pose.computeResidual(cMo_dementhon);
pose.computePose(vpPose::LAGRANGE, cMo_lagrange) ;
double residual_lagrange = pose.computeResidual(cMo_lagrange);
// Select the best pose to initialize the lowe pose computation
if (residual_lagrange < residual_dementhon)
cMo = cMo_lagrange;
else
cMo = cMo_dementhon;
}
else { // init = false; use of the previous pose to initialise LOWE
cRo.buildFrom(cro);
cMo.buildFrom(cto, cRo);
}
pose.computePose(vpPose::LOWE, cMo) ;
cMo.extract(cto);
cMo.extract(cRo);
cro.buildFrom(cRo);
}
