F_VN_GetPixel

F_VN_GetPixel 1:

Gets a specific pixel.

Syntax

Definition:

FUNCTION F_VN_GetPixel : HRESULT
VAR_INPUT
    ipSrcImage : ITcVnImage;
END_VAR
VAR_IN_OUT
    aValue     : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
    nX         : UDINT;
    nY         : UDINT;
    hrPrev     : HRESULT;
END_VAR

F_VN_GetPixel 2: Inputs

Name

Type

Description

ipSrcImage

ITcVnImage

Source image

nX

UDINT

x coordinate of the pixel

nY

UDINT

y coordinate of the pixel

hrPrev

HRESULT

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

F_VN_GetPixel 3: In/Outputs

Name

Type

Description

aValue

TcVnVector4_LREAL

Returns the pixel value (Unused channels are set to 0.)

F_VN_GetPixel 4: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements

Development environment

Target platform

PLC libraries to include

TwinCAT V3.1.4024.59 or later

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

Tc3_Vision