F_VN_VarianceFilterExp
Calculates the local variance of an image. (expert function)
Syntax
Definition:
FUNCTION F_VN_VarianceFilterExp : HRESULT
VAR_INPUT
ipSrcImage : ITcVnImage;
ipDestImage : Reference To ITcVnImage;
nKernelSize : UDINT;
fScale : LREAL;
eBorderType : ETcVnBorderInterpolationMethod;
hrPrev : HRESULT;
END_VAR
Inputs
|
Name |
Type |
Description |
|---|---|---|
|
ipSrcImage |
Source image. Only TCVN_ET_USINT Type is supported. | |
|
ipDestImage |
Reference To ITcVnImage |
Destination image of type TCVN_ET_UINT (An appropriate destination image will be created if required.) |
|
nKernelSize |
UDINT |
Size of the kernel |
|
fScale |
LREAL |
Scale factor for the computed variance values |
|
eBorderType |
Image border handling | |
|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) |
Return valueRequired 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 |