F_VN_InvertAffineTransformation

Invert a 2D affine transformation matrix. The inverted transformation compensates the affine transformation on an image if it is used in the F_VN_WarpAffine function.

Syntax

Definition:

FUNCTION F_VN_InvertAffineTransformation : HRESULT
VAR_IN_OUT
    aTransformationMatrix         : TcVnMatrix2x3_LREAL;
    aInvertedTransformationMatrix : TcVnMatrix2x3_LREAL;
END_VAR
VAR_INPUT
    hrPrev                        : HRESULT;
END_VAR

Inputs

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

In/Outputs

Name	Type	Description
aTransformationMatrix	TcVnMatrix2x3_LREAL	Source affine transformation matrix
aInvertedTransformationMatrix	TcVnMatrix2x3_LREAL	Resulting inverted affine transformation matrix

Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT V3.1. 4024.44 or later	PC or CX (x64) with PL50, e.g. Intel 4-core Atom CPU	Tc3_Vision