F_VN_DrawKeypointsExp

Syntax

Definition:

FUNCTION F_VN_DrawKeypointsExp : HRESULT
VAR_INPUT
    ipSrcImage  : ITcVnImage;
    ipKeyPoints : ITcVnContainer;
    ipDestImage : Reference To  ITcVnImage;
END_VAR
VAR_IN_OUT
    aColor      : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
    eFlags      : ETcVnDrawMatchesFlags;
    hrPrev      : HRESULT;
END_VAR

Inputs

Name	Type	Description
ipSrcImage	ITcVnImage	Source image (elements of type USINT)
ipKeyPoints	ITcVnContainer	Container with the keypoints (ContainerType_Vector_TcVnKeyPoint)
ipDestImage	Reference To ITcVnImage	Destination image (An appropriate color image will be created if required.)
eFlags	ETcVnDrawMatchesFlags	A combination of flags to support overdrawing an existing destination image and/or drawing additional (Rich-)Keypoint information (size and orientation)
hrPrev	HRESULT	HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

In/Outputs

Name	Type	Description
aColor	TcVnVector4_LREAL	Color to draw the keypoints (for {-1, -1, -1, -1}, a random color is chosen for each point)

Return value

HRESULT

Required License

TC3 Vision Matching

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