F_VN_FilterGoodMatches

F_VN_FilterGoodMatches 1:

Filter the descriptor matches and return only good ones.

Syntax

Definition:

FUNCTION F_VN_FilterGoodMatches : HRESULT
VAR_INPUT
    ipMatches     : ITcVnContainer;
    ipGoodMatches : Reference To ITcVnContainer;
    fMaxDist      : REAL;
    fMaxKnnRatio  : REAL;
    hrPrev        : HRESULT;
END_VAR

F_VN_FilterGoodMatches 2: Inputs

Name

Type

Description

ipMatches

ITcVnContainer

Container with descriptor matches (ContainerType_Vector_TcVnDMatch or ContainerType_Vector_Vector_TcVnDMatch)

ipGoodMatches

Reference To ITcVnContainer

Returns a container with good matches (ContainerType_Vector_TcVnDMatch)

fMaxDist

REAL

Maximum allowed descriptor distance (-1 disables this filter criterion)

fMaxKnnRatio

REAL

Maximum allowed distance ratio between first and second best match ([0..1], used for knn match results only, -1 disables this filter criterion)

hrPrev

HRESULT

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

F_VN_FilterGoodMatches 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