FindContours
Search for object contours in a binary image.
Can use available TwinCAT Job Tasks for executing parallel code regions.
Can return partial results when canceled by Watchdog.
Syntax
Definition:
HRESULT FindContours(
HRESULT hrPrev,
ITcVnImage* ipSrcImage,
ITcVnContainer*& ipContours,
ETcVnContourRetrievalMode eRetrievalMode = CRM_EXTERNAL,
ETcVnContourApproximationMethod eApproximationMethod = CAM_SIMPLE,
TcVnPoint& aOffset = {0, 0}
)Parameters
|
Name |
Type |
Default |
Description |
|---|---|---|---|
|
hrPrev |
|
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) | |
|
ipSrcImage |
|
Source image (1 channel, binary) | |
|
ipContours |
|
Returns a container which is filled with the found contours (ContainerType_Vector_Vector_TcVnPoint2_DINT; The elements of this container are single contours. Non-zero interface pointers are reused.) | |
|
eRetrievalMode |
CRM_EXTERNAL |
Specifies which contours are retrieved and how their relationship is encoded | |
|
eApproximationMethod |
CAM_SIMPLE |
Contour encoding | |
|
aOffset |
{0, 0} |
Offset by which every contour point is shifted |
Return valueRequired License
TC3 Vision Base