F_VN_ImageAverageStdDev

F_VN_ImageAverageStdDev 1:

Computes the (channel-wise) average pixel value and the corresponding standard deviation of an image.

Syntax

Definition:

FUNCTION F_VN_ImageAverageStdDev : HRESULT
VAR_INPUT
    ipSrcImage : ITcVnImage;
END_VAR
VAR_IN_OUT
    aAverage   : TcVnVector4_LREAL;
    aStdDev    : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
    hrPrev     : HRESULT;
END_VAR

F_VN_ImageAverageStdDev 2: Inputs

Name

Type

Description

ipSrcImage

ITcVnImage

Source image (1 - 4 channels)

hrPrev

HRESULT

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

F_VN_ImageAverageStdDev 3: In/Outputs

Name

Type

Description

aAverage

TcVnVector4_LREAL

Returns the (channel-wise) average pixel value of ipSrcImage

aStdDev

TcVnVector4_LREAL

Returns the (channel-wise) pixel value standard deviation of ipSrcImage

F_VN_ImageAverageStdDev 4: 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