F_VN_PerspectiveTransformation

F_VN_PerspectiveTransformation 1:

Apply a perspective transformation (rotation + translation, e.g. from extrinsic calibration) to 3D point coordinates.

Syntax

Definition:

FUNCTION F_VN_PerspectiveTransformation : HRESULT
VAR_INPUT
    ipSrcPoints        : ITcVnContainer;
    ipDestPoints       : Reference To ITcVnContainer;
END_VAR
VAR_IN_OUT
    aRotationMatrix    : TcVnMatrix3x3_LREAL;
    aTranslationVector : TcVnVector3_LREAL;
END_VAR
VAR_INPUT
    hrPrev             : HRESULT;
END_VAR

F_VN_PerspectiveTransformation 2: Inputs

Name

Type

Description

ipSrcPoints

ITcVnContainer

Container with 3D source points (TcVnPoint3_REAL or TcVnPoint3_LREAL)

ipDestPoints

Reference To ITcVnContainer

Returns the transformed points (same type as ipSrcPoints)

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

F_VN_PerspectiveTransformation 3: In/Outputs

Name

Type

Description

aRotationMatrix

TcVnMatrix3x3_LREAL

3x3 rotation matrix

aTranslationVector

TcVnVector3_LREAL

Translation vector

F_VN_PerspectiveTransformation 4: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.54 or later

PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU

Tc3_Vision