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 V3.1.4024.54 or later

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

Tc3_Vision