MatchDescriptorsFlannLsh

Match descriptors using a FLANN based approach with LSH index.

Syntax

Definition:

HRESULT MatchDescriptorsFlannLsh(
    HRESULT          hrPrev,
    ITcVnImage*      ipQueryDescriptors,
    ITcVnImage*      ipTrainDescriptors,
    ITcVnContainer*& ipMatches,
    ULONG            nTableNumber = 12,
    ULONG            nKeySize = 20,
    ULONG            nMultiProbeLevel = 2,
    ULONG            nChecks = 32
)

Parameters

Name

Type

Default

Description

hrPrev

HRESULT

 

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

ipQueryDescriptors

ITcVnImage*

 

Query descriptors (i.e. descriptors of a reference/template image)

ipTrainDescriptors

ITcVnImage*

 

Training descriptors (i.e. descriptors of a source/input image)

ipMatches

ITcVnContainer*&

 

Returns a container which is filled with the descriptor matches (ContainerType_Vector_TcVnDMatch; Non-zero interface pointers are reused.)

nTableNumber

ULONG

12

Number of tables

nKeySize

ULONG

20

Key size

nMultiProbeLevel

ULONG

2

Multi-probe level

nChecks

ULONG

32

Maximum number of visited leafs when searching for neighbors

MatchDescriptorsFlannLsh 1: 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