CreateBandpassGaussianFilter
Creates a bandpass Gaussian filter, which can be applied to a frequency domain image by element-wise multiplication.
Syntax
Definition:
HRESULT CreateBandpassGaussianFilter(
HRESULT hrPrev,
ITcVnImage*& ipFilter,
ULONG nWidth,
ULONG nHeight,
bool bDoublePrecision,
bool bOriginAtCenter,
double fCutoffDistance,
double fBandWidth
)
Parameters
Name |
Type |
Description |
---|---|---|
hrPrev |
HRESULT indicating the result of previous operations (If SUCCEEDED(hrPrev) equals false, no operation is executed.) | |
ipFilter |
Returns the created filter (1 channel of type REAL or LREAL, depending on bDoublePrecision. Non-zero interface pointers are reused.). | |
nWidth |
ULONG |
Filter width (even, >= 2, must match the width of the image it is applied to) |
nHeight |
ULONG |
Filter height (even, >= 2, must match the height of the image it is applied to) |
bDoublePrecision |
bool |
If true, the filter is generated with double precision (LREAL) instead of single precision (REAL). |
bOriginAtCenter |
bool |
If true, the filter origin is shifted to the image center. |
fCutoffDistance |
double |
The cutoff distance of the Gaussian filter (> 0). |
fBandWidth |
double |
The band width of the Gaussian filter (> 0). |
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 |