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ISIS Application Documentation

desmear

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Remove frame transfer smear

Description
Categories
Groups
History

Description

This program removes the frame transfer smear from a CCD camera. Transfer smear is the build up of residual enegy as the data is read from the detector, line by line. The current algorithm is written to remove smear for a CCD that reads data at the top of the detector. No visual examples have been included because, the difference between the input and output is only a few DN values.

Categories

Parameter Groups

Files

Name Description
FROM Input file to be corrected
TO Output cube

Correction Values

Name Description
DURATIONExposure duration of input file.
TRANSFERFrame transfer time

Files: FROM

Description

The input cube that will be corrected for CCD smear.

Type cube
File Mode input
Filter *.cub *.lbl

Files: TO

Description

The smear corrected output cube

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

Correction Values: DURATION

Description

The exposure duration value to be used in the smear calculation. Exposure duration is the value of time between the opening and closing of a instrument aperture.
If NO value is entered by the user, the value will be filled with the exposure duration keyword from the Instrument group
The exposure duration value must be in the same units as the transfer time.

Type double
Internal Default From labels

Correction Values: TRANSFER

Description

Time required to transfer data from from active imaging area.
If NO value is entered by the user, the value will be filled with the transfer time keyword from the Instrument group.
The transfer time value must be in the same units as the exposure duration

Type double
Internal Default From labels

History

Tracie Sucharski2003-06-16 Original version, algorithm from Andrew E. Johnson (aej@robotics.jpl.nasa.gov).
Bob Sucharski2005-11-04 Converted to Isis 3.0
Brendan George2006-09-28 Documentation fixes
Steven Lambright2008-05-13 Removed references to CubeInfo
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File Modified: 02/24/2025 16:08:58