projective_trans_point_3dT_projective_trans_point_3dProjectiveTransPoint3dProjectiveTransPoint3d (Operator)

Name

projective_trans_point_3dT_projective_trans_point_3dProjectiveTransPoint3dProjectiveTransPoint3d — Project a 3D point using a projective transformation matrix.

Signature

projective_trans_point_3d( : : HomMat3D, Px, Py, Pz : Qx, Qy, Qz)

Description

projective_trans_point_3dprojective_trans_point_3dProjectiveTransPoint3dProjectiveTransPoint3dProjectiveTransPoint3d applies the homogeneous projective transformation matrix HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D to all input points (PxPxPxPxpx,PyPyPyPypy,PzPzPzPzpz) and returns an array of output points (QxQxQxQxqx,QyQyQyQyqy,QzQzQzQzqz). The transformation is described by the homogeneous transformation matrix given in HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D. This corresponds to the following equations (input and output points as homogeneous vectors):

projective_trans_point_3dprojective_trans_point_3dProjectiveTransPoint3dProjectiveTransPoint3dProjectiveTransPoint3d then transforms the homogeneous coordinates to Euclidean coordinates by dividing them by Tw: If a point in the plane at infinity (Tw = 0) is created by the transformation, an error is returned. If this is undesired, projective_trans_hom_point_3dprojective_trans_hom_point_3dProjectiveTransHomPoint3dProjectiveTransHomPoint3dProjectiveTransHomPoint3d can be used.

Execution Information

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Processed without parallelization.

Parameters

HomMat3DHomMat3DHomMat3DHomMat3DhomMat3D (input_control) hom_mat3d → (real)

Homogeneous projective transformation matrix.

PxPxPxPxpx (input_control) number(-array) → (real / integer)

Input point (x coordinate).

PyPyPyPypy (input_control) number(-array) → (real / integer)

Input point (y coordinate).

PzPzPzPzpz (input_control) number(-array) → (real / integer)

Input point (z coordinate).

QxQxQxQxqx (output_control) number(-array) → (real)

Output point (x coordinate).

QyQyQyQyqy (output_control) number(-array) → (real)

Output point (y coordinate).

QzQzQzQzqz (output_control) number(-array) → (real)

Output point (z coordinate).

Possible Predecessors

vector_to_hom_mat3dvector_to_hom_mat3dVectorToHomMat3dVectorToHomMat3dVectorToHomMat3d

Alternatives

projective_trans_hom_point_3dprojective_trans_hom_point_3dProjectiveTransHomPoint3dProjectiveTransHomPoint3dProjectiveTransHomPoint3d

Module

Foundation

Operators