ConnectedComponentsWithStats

Computes the connected components and corresponding statistics of an image.

Syntax

Definition:

HRESULT ConnectedComponentsWithStats(
    HRESULT                           hrPrev,
    ITcVnImage*                       ipSrcImage,
    ITcVnImage*&                      ipLabelImage,
    ITcVnContainer*&                  ipBoundingBoxes,
    ITcVnContainer*&                  ipNumPixels,
    ITcVnContainer*&                  ipCentroids,
    LONG&                             nLabels,
    ETcVnPixelConnectivity            eConnectivity = PC_8,
    ETcVnElementType                  eLabelType = TCVN_ET_DINT,
    ETcVnConnectedComponentsAlgorithm eAlgorithm = CCA_GRANA
)

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 (USINT, 1 channel, binary)

ipLabelImage

ITcVnImage*&

 

Returns the labels for each source image pixel (1 channel, DINT. An appropriate destination image will be created if required.)

ipBoundingBoxes

ITcVnContainer*&

 

Returns the bounding boxes for each labeled region. (ContainerType_Vector_TcVnRectangle_DINT; Non-zero interface pointers are reused.)

ipNumPixels

ITcVnContainer*&

 

Returns the number of pixels for each labeled region. (ContainerType_Vector_DINT; Non-zero interface pointers are reused.)

ipCentroids

ITcVnContainer*&

 

Returns the centroids for each labeled region. (ContainerType_Vector_TcVnPoint2_LREAL; Non-zero interface pointers are reused.)

nLabels

LONG&

 

Returns the number of labels

eConnectivity

ETcVnPixelConnectivity

PC_8

Selects if 4- or 8-way pixel connectivity should be used

eLabelType

ETcVnElementType

TCVN_ET_DINT

Selects the type of ipLabelImage (only UINT or DINT supported)

eAlgorithm

ETcVnConnectedComponentsAlgorithm

CCA_GRANA

Selects the applied algorithm

ConnectedComponentsWithStats 1: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.59 or later

PC or CX (x64) with min. PL50, e.g. Intel 4-core Atom CPU

Tc3_Vision