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viknonoodle

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Remove periodic noise from a Viking image

Description
Categories
Groups
History


Description

VIKNONOODLE removes periodic noise, in the sample direction, from VIKING images. The images should be run through LEVEL1 before VIKNONOODLE is run on the images. This program is to be run before any cropping. For best results, use trim to remove unwanted data from the sides first. No data that lies between the two noise locations will be affected.

Categories


Related Objects and Documents

Applications


Parameter Groups

Files

Name Description
FROM Input file to apply VIKNONOODLE to.
TO Output cube

Parameters

Name Description
TOLERANCE Frequency magnitude tolerance level.

Files: FROM

Description

The input cube with periodic noise in the sample direction.

Type cube
File Mode input
Filter *.cub

Files: TO

Description

The resultant cube with the noise removed.

Type cube
File Mode output
Pixel Type real
Filter *.cub

Parameters: TOLERANCE

Description

The tolerance parameter is used to specify how strong the frequency must be to count as noise. The higher the tolerance level, the less likely the frequency will be cleaned. However, if the tolerance is too low, it may wipe out good data and some banding may occur around the noise location. (Note: most noise frequencies have a magnitude greater than 1.0).

Type double
Default 0.5

History

Jacob Danton2006-05-22 Original version
Elizabeth Miller2006-07-24 Moved from base to viking area
Brendan George2006-09-28 Documentation fixes
Steven Lambright2007-12-14 Fixed boundary condition where vectors went out of bounds
Debbie A. Cook2011-12-12 Added a check for a line with no valid pixels and just copy the input line to the output in that case