VarianceFilter

Calculates the local variance of an image.

Syntax

Definition:

HRESULT VarianceFilter(
    HRESULT                        hrPrev,
    ITcVnImage*                    ipSrcImage,
    ITcVnImage*&                   ipDestImage,
    ULONG                          nKernelSize,
    double                         fScale = 1,
    ETcVnBorderInterpolationMethod eBorderType = BIM_DEFAULT
)

Parameters

Name

Type

Default

Description

hrPrev

HRESULT

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

ipSrcImage

ITcVnImage*

Source image. Only TCVN_ET_USINT Type is supported.

ipDestImage

ITcVnImage*&

Destination image of type TCVN_ET_UINT (An appropriate destination image will be created if required.)

nKernelSize

ULONG

Size of the kernel

fScale

double

1

Scale factor for the computed variance values

eBorderType

ETcVnBorderInterpolationMethod

BIM_DEFAULT

Image border handling

VarianceFilter 1: Return value

HRESULT

Required License

TC3 Vision Base

System Requirements