ISIS Application Documentation
Apply Butterworth filter for cube in fft frequency domain
Description
Categories
Groups
History
Description
Applies a Butterworth filter to a cube. This filter is used
on images in the frequency domain. Use the fft app to transform an
image from a spacial to frequency domain and use the ifft app to transform from frequency to spacial.
Categories
Parameter Groups
Files
|
Name
|
Description
|
| FROM | Input file |
| TO | Output cube |
Parameter Info
Filter Type
|
Name
|
Description
|
| TYPE | Type of filter |
Files:
FROM
Description
Cube to filter
|
Type
| cube |
|
File Mode
| input |
|
Filter
| *.cub |
Files:
TO
Description
The resultant cube
|
Type
| cube |
|
File Mode
| output |
|
Filter
| *.cub |
Parameter Info:
CUTOFF
Description
The specified cutoff frequency.
|
Type
| double |
|
Default
| 0.0 |
|
Minimum
| 0.0
(inclusive)
|
Parameter Info:
ORDER
Description
The order of the Butterworth filter.
|
Type
| integer |
|
Default
| 1 |
|
Minimum
| 0
(inclusive)
|
Parameter Info:
BANDWIDTH
Description
This parameter is used when the type specified is "bandpass" or "bandstop".
|
Type
| double |
|
Default
| 1.0 |
|
Minimum
| 0.0
(inclusive)
|
Filter Type:
TYPE
Description
This is the type of filter to be performed on the input.
|
Type
| string |
|
Default
|
LOWPASS
|
|
Option List:
|
|
Option |
Brief |
Description |
| LOWPASS | Lowpass filter |
Applies a lowpass filter to an image in the frequency domain.
|
| HIGHPASS | Highpass filter |
Applies a highpass filter to an image in the frequency domain.
|
| BANDPASS | Bandpass filter |
Applies a bandpass filter to an image in the frequency domain.
|
| BANDSTOP | Bandstop filter |
Applies a bandstop filter to an image in the frequency domain.
|
|
History
| Jacob Danton | 2005-11-28 |
Original version
|
| Brendan George | 2006-09-21 |
Documentation fixes
|
| Steven Lambright | 2008-05-12 |
Removed references to CubeInfo
|
| Steven Lambright | 2008-10-17 |
Removed outdated examples from the documentation.
|