GetConnectedComponent

Get the mask image (and optionally the outer contour) of a connected component from a label image based on the label ID.
Can use available TwinCAT Job Tasks for executing parallel code regions.

Syntax

Definition:

HRESULT GetConnectedComponent(
    HRESULT          hrPrev,
    ITcVnImage*      ipLabelImage,
    LONG             nLabelID,
    ITcVnImage*&     ipMaskImage,
    ITcVnContainer** pipContourPoints = nullptr
)

Parameters

Name	Type	Default	Description
hrPrev	HRESULT		HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)
ipLabelImage	ITcVnImage*		Image containing labels for each pixel (1 channel DINT or UINT).
nLabelID	LONG		Value of the requested label
ipMaskImage	ITcVnImage*&		Returns a mask image marking the pixels that belong to the component (1 channel USINT. Mask is optional, set to 0 if not required.)
pipContourPoints	ITcVnContainer**	nullptr	Returns the outer contour of the component(ContainerType_Vector_TcVnPoint2_DINT. Contour is optional, set to 0 if not required.)

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