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 V3.1.4024.54 or later

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

Tc3_Vision