project_point_hom_mat3dT_project_point_hom_mat3dProjectPointHomMat3dProjectPointHomMat3d (Operator)


project_point_hom_mat3dT_project_point_hom_mat3dProjectPointHomMat3dProjectPointHomMat3d — Project a 3D point using a 3×4 projection matrix.


project_point_hom_mat3d( : : HomMat3D, Px, Py, Pz : Qx, Qy)

Herror T_project_point_hom_mat3d(const Htuple HomMat3D, const Htuple Px, const Htuple Py, const Htuple Pz, Htuple* Qx, Htuple* Qy)

void ProjectPointHomMat3d(const HTuple& HomMat3D, const HTuple& Px, const HTuple& Py, const HTuple& Pz, HTuple* Qx, HTuple* Qy)

HTuple HHomMat3D::ProjectPointHomMat3d(const HTuple& Px, const HTuple& Py, const HTuple& Pz, HTuple* Qy) const

double HHomMat3D::ProjectPointHomMat3d(double Px, double Py, double Pz, double* Qy) const

static void HOperatorSet.ProjectPointHomMat3d(HTuple homMat3D, HTuple px, HTuple py, HTuple pz, out HTuple qx, out HTuple qy)

HTuple HHomMat3D.ProjectPointHomMat3d(HTuple px, HTuple py, HTuple pz, out HTuple qy)

double HHomMat3D.ProjectPointHomMat3d(double px, double py, double pz, out double qy)


project_point_hom_mat3dproject_point_hom_mat3dProjectPointHomMat3dProjectPointHomMat3dProjectPointHomMat3d applies the 3×4 projection matrix HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D to all input points (PxPxPxPxpx,PyPyPyPypy,PzPzPzPzpz) and returns an array of output points (QxQxQxQxqx,QyQyQyQyqy). The transformation is described by the 3×4 projection matrix given in HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D. This corresponds to the following equations (input and output points as homogeneous vectors):

project_point_hom_mat3dproject_point_hom_mat3dProjectPointHomMat3dProjectPointHomMat3dProjectPointHomMat3d then transforms the homogeneous coordinates to Euclidean coordinates by dividing them by Tw: If a point on the line at infinity (Tw = 0) is created by the transformation, an error is returned. If this is undesired, project_hom_point_hom_mat3dproject_hom_point_hom_mat3dProjectHomPointHomMat3dProjectHomPointHomMat3dProjectHomPointHomMat3d can be used.

Note that, consistent with the conventions used by the projection in calibrate_camerascalibrate_camerasCalibrateCamerasCalibrateCamerasCalibrateCameras, QxQxQxQxqx corresponds to the column coordinate of an image and QyQyQyQyqy corresponds to the row coordinate.

Execution Information


HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D (input_control)  hom_mat3d HHomMat3D, HTupleHTupleHtuple (real) (double) (double) (double)

3×4 projection matrix.

PxPxPxPxpx (input_control)  number(-array) HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Input point (x coordinate).

PyPyPyPypy (input_control)  number(-array) HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Input point (y coordinate).

PzPzPzPzpz (input_control)  number(-array) HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Input point (z coordinate).

QxQxQxQxqx (output_control)  real(-array) HTupleHTupleHtuple (real) (double) (double) (double)

Output point (x coordinate).

QyQyQyQyqy (output_control)  real(-array) HTupleHTupleHtuple (real) (double) (double) (double)

Output point (y coordinate).

Possible Predecessors



project_hom_point_hom_mat3dproject_hom_point_hom_mat3dProjectHomPointHomMat3dProjectHomPointHomMat3dProjectHomPointHomMat3d, project_3d_pointproject_3d_pointProject3dPointProject3dPointProject3dPoint