F_VN_MaxPixelValueExp

Finds the maximum pixel value in an image (1 - 4 channels supported). (expert function)

Syntax

Definition:

FUNCTION F_VN_MaxPixelValueExp : HRESULT
VAR_INPUT
    ipImage              : ITcVnImage;
END_VAR
VAR_IN_OUT
    aMaxValue            : TcVnVector4_LREAL;
    aPosition            : TcVnPoint2_DINT;
END_VAR
VAR_INPUT
    ipMask               : ITcVnImage;
    eVectorCompareMethod : ETcVnVectorCompareMethod;
    hrPrev               : HRESULT;
END_VAR

Inputs

Name	Type	Description
ipImage	ITcVnImage	Source image
ipMask	ITcVnImage	Optional mask to specify which pixel positions are considered (USINT, set parameter to 0 if not required)
eVectorCompareMethod	ETcVnVectorCompareMethod	Select a vector compare method for multi-channel images
hrPrev	HRESULT	HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

In/Outputs

Name	Type	Description
aMaxValue	TcVnVector4_LREAL	Returns the maximum pixel value
aPosition	TcVnPoint2_DINT	Returns the first found position of aMaxValue (not supported for multi-channel images with ELEMENTWISE)

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