F_VN_CheckColorRange

Check if the pixel values of an image lie in a given range. The destination image has the same size as the source image but only one channel with a pixel element size of 8 bit. Its elements are set to 255 if the corresponding pixels of the source image are in the checked range and set to 0 otherwise.

Syntax

Definition:

FUNCTION F_VN_CheckColorRange : HRESULT
VAR_INPUT
    ipSrcImage   : ITcVnImage;
    ipDestImage  : Reference To  ITcVnImage;
END_VAR
VAR_IN_OUT
    aLowerBounds : TcVnVector4_LREAL;
    aUpperBounds : TcVnVector4_LREAL;
END_VAR
VAR_INPUT
    hrPrev       : HRESULT;
END_VAR

Inputs

Name	Type	Description
ipSrcImage	ITcVnImage	Source image
ipDestImage	Reference To ITcVnImage	Destination image (An appropriate destination image will be created if required.)
hrPrev	HRESULT	HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.)

In/Outputs

Name	Type	Description
aLowerBounds	TcVnVector4_LREAL	Channel-wise lower bounds (Unused channels are ignored.)
aUpperBounds	TcVnVector4_LREAL	Channel-wise upper bounds (Unused channels are ignored.)

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