ScharrFilter

Calculates the first order derivative in x or y direction using a Scharr filter.

Syntax

Definition:

HRESULT ScharrFilter(
    HRESULT                        hrPrev,
    ITcVnImage*                    ipSrcImage,
    ITcVnImage*&                   ipDestImage,
    ETcVnElementType               eDestDepth,
    ETcVnFilterDirection           eFilterDirection,
    double                         fScale = 1,
    double                         fDelta = 0,
    ETcVnBorderInterpolationMethod eBorderType = BIM_DEFAULT
)

Parameters

Name	Type	Default	Description
hrPrev	HRESULT		HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)
ipSrcImage	ITcVnImage*		Source image
ipDestImage	ITcVnImage*&		Destination image (An appropriate destination image will be created if required.)
eDestDepth	ETcVnElementType		Destination image depth
eFilterDirection	ETcVnFilterDirection		Filter direction
fScale	double	1	Scale factor for the computed derivative values
fDelta	double	0	Delta value that is added to the results prior to storing them in dest
eBorderType	ETcVnBorderInterpolationMethod	BIM_DEFAULT	Image border handling

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