ReferenceColorSimilarity (ITcVnMlModel*)

Computes the similarity to a reference color model for each pixel in the source image.
Can use available TwinCAT Job Tasks for executing parallel code regions.
Can return partial results when canceled by Watchdog.

Syntax

Definition:

HRESULT ReferenceColorSimilarity(
    HRESULT       hrPrev,
    ITcVnImage*   ipSrcImage,
    ITcVnImage*&  ipDestImage,
    ITcVnMlModel* ipColorModel,
    float         fVariance = 0.15f,
    float         fLuminanceWeight = 0
)

Parameters

Name

Type

Default

Description

hrPrev

HRESULT

 

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

ipSrcImage

ITcVnImage*

 

RGB source image (USINT, 3 channels)

ipDestImage

ITcVnImage*&

 

Returns the similarity to ipColorModel for each pixel in ipSrcImage (USINT, 1 channel. An appropriate destination image will be created if required.)

ipColorModel

ITcVnMlModel*

 

Color model

fVariance

float

0.15f

Allowed color variance (0.1 - 0.3 might be a good start to try)

fLuminanceWeight

float

0

Weight the impact of the luminance ([0..1], e.g. set to 0 to be more resistant to unequal illumination, but might be required to differentiate between some colors. Ignored if ipColorModel is of type RGB.)

ReferenceColorSimilarity (ITcVnMlModel*) 1: Return value

HRESULT

Required License

TC3 Vision Base

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