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USGS

Isis 3 Application Documentation


photrim

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Trims pixels outside of phase, incidence, and emission angles

Overview Parameters

Description

This program trims pixels outside of user specified phase, incidence and emission angles. It is meant to work specifically on camera based cubes. The phase angle is the angle between the sun vector to a pixel and the instrument vector to the same pixel. The incidence angle is the angle between the sun vector to a point and the normal at that point. The emission angle is the angle between the instrument vector to a point and the normal at that point. If the instrument is directly between the point and the sun the phase, incidence and emission angles are all zero. If the instrument is looking down the normal and the sun is not then the phase, incidence and emission angles are greater than 0 but less than or equal to 90. If any of the angles is greater than 90 then the sun is not hitting the point or the instrument can not see the point.

Categories


Related Applications in Previous Versions of Isis

This application replaces the following application existing in previous versions of Isis, which has been deprecated from the current version of Isis:
  • trimangle

History

Tammy Becker1999-02-11 Original version
Stuart Sides2003-06-04 Converted trimandle to Isis 3.0, and made it trim only on phase, incidence and emission angles.
Stuart Sides2003-07-29 Modified filename parameters to be cube parameters where necessary
Steven Lambright2008-05-13 Removed references to CubeInfo

Parameter Groups

Files

Name Description
FROM Input cube to trim
TO Output cube

Photometry

Name Description
MINPHASEMinimum phase angle to trim
MAXPHASEMaximum phase angle to trim
MINEMISSIONMinimum emission angle to trim
MAXEMISSIONMaximum emission angle to trim
MININCIDENCEMinimum incidence angle to trim
MAXINCIDENCEMaximum incidence angle to trim
X

Files: FROM


Description

Use this parameter to select the filename. All bands within the file will be trimmed.

Type cube
File Mode input
Filter *.cub
Close Window
X

Files: TO


Description

This file will contain the results of the trim.

Type cube
File Mode output
Close Window
X

Photometry: MINPHASE


Description

Pixels which have a phase angle less than this value will be trimmed.

Type double
Default 0.0
Minimum 0.0 (inclusive)
Maximum 180.0 (inclusive)
Less Than or Equal MAXPHASE
Close Window
X

Photometry: MAXPHASE


Description

Pixels which have a phase angle greater than this value will be trimmed.

Type double
Default 180.0
Minimum 0.0 (inclusive)
Maximum 180.0 (inclusive)
Greater Than or Equal MINPHASE
Close Window
X

Photometry: MINEMISSION


Description

Pixels which have an emission angle less than this value will be trimmed.

Type double
Default 0.0
Minimum 0.0 (inclusive)
Maximum 90.0 (inclusive)
Less Than or Equal MAXEMISSION
Close Window
X

Photometry: MAXEMISSION


Description

Pixels which have a emission angle greater than this value will be trimmed.

Type double
Default 90.0
Minimum 0.0 (inclusive)
Maximum 90.0 (inclusive)
Greater Than or Equal MINEMISSION
Close Window
X

Photometry: MININCIDENCE


Description

Pixels which have an incidence angle less than this value will be trimmed.

Type double
Default 0.0
Minimum 0.0 (inclusive)
Maximum 90.0 (inclusive)
Less Than or Equal MAXINCIDENCE
Close Window
X

Photometry: MAXINCIDENCE


Description

Pixels which have a incidence angle greater than this value will be trimmed.

Type double
Default 90.0
Minimum 0.0 (inclusive)
Maximum 90.0 (inclusive)
Greater Than or Equal MININCIDENCE
Close Window