F_VN_KeyPointsSB

F_VN_KeyPointsSB 1:

Detects keypoints using a Simple Blob method - several iterations apply different thresholds to source image - connected components (blobs) are detected - the center and radius of the blobs are returned as keypoints
Can use available TwinCAT Job Tasks for executing parallel code regions.

Syntax

Definition:

FUNCTION F_VN_KeyPointsSB : HRESULT
VAR_INPUT
    ipSrcImage  : ITcVnImage;
    ipKeyPoints : Reference To  ITcVnContainer;
    hrPrev      : HRESULT;
END_VAR

F_VN_KeyPointsSB 2: Inputs

Name

Type

Description

ipSrcImage

ITcVnImage

Source image

ipKeyPoints

Reference To ITcVnContainer

Returns a container which is filled with the keypoints (ContainerType_Vector_TcVnKeyPoint; Non-zero interface pointers are reused.)

hrPrev

HRESULT

HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

F_VN_KeyPointsSB 3: Return value

HRESULT

Required License

TC3 Vision Matching

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