F_VN_GetAffineTransformation2D

Estimate the 2D affine transformation between two planar point sets using RANSAC algorithm.

Syntax

Definition:

FUNCTION F_VN_GetAffineTransformation2D : HRESULT
VAR_INPUT
    ipSrcPoints      : ITcVnContainer;
    ipDestPoints     : ITcVnContainer;
END_VAR
VAR_IN_OUT
    aAffineTransform : TcVnMatrix2x3_LREAL;
END_VAR
VAR_INPUT
    hrPrev           : HRESULT;
END_VAR

Inputs

Name	Type	Description
ipSrcPoints	ITcVnContainer	Container with at least 3 source points (ContainerType_Vector_TcVnPoint2_REAL)
ipDestPoints	ITcVnContainer	Container with destination points (same number as ipSrcPoints, ContainerType_Vector_TcVnPoint2_REAL)
hrPrev	HRESULT	HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

In/Outputs

Name	Type	Description
aAffineTransform	TcVnMatrix2x3_LREAL	Returns the affine transformation matrix, which transforms the source points to the destination points

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