ISIS Application Documentation
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Compute the center of mass of a single-band cube
| Overview | Parameters | Example 1 |
Description
This program computes the sample and line of the center of mass (weighted
by pixel value) of a single-band cube. The sample and line of the centroid,
as well as the offset from the image center, are output in PVL. In addition
if the TO parameter is specified this program will ouput a single-band cube
of the same size with the center of mass of the input cube at the center of
the image frame.
The primary purpose of this program is to align multiple images of an object for
a movie, such as images taken on approach. This program is best used with
objects against a dark background.
CategoriesRelated Objects and DocumentsApplicationsHistory
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| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:09 |
Parameter GroupsFiles
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| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:09 |
Files: FROM
Description
Use this parameter to select the filename. Only one band is allowed in the input cube.
| Type | cube |
|---|---|
| File Mode | input |
| Filter | *.cub |
Files: TO
Description
If specified this file will contain the results of the centered cube.
| Type | cube |
|---|---|
| File Mode | output |
| Internal Default | None |
| Inclusions |
|
| Filter | *.cub |
Files: INTERP
Description
This will be the interpolation type used to get the output file in either the translate or warp application. Defaults to CUBICCONVOLUTION.
| Type | string | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Default | CUBICCONVOLUTION | ||||||||||||
| Option List: |
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Files: MINIMUM
Description
Minimum DN in the image to consider for computation of the center of mass. This can be helpful to eliminate background data.
| Type | double |
|---|---|
| Internal Default | ValidMin |
| Less Than | MAXIMUM |
Files: MAXIMUM
Description
Maximum DN to consider in computation of center of mass. This can be used to eliminate high saturation that would otherwise bias the centroid calculation.
| Type | double |
|---|---|
| Internal Default | ValidMax |
Example 1Centering object against dark background. Description
This example shows centering a body against a dark background.
Command Line
center center from=EN0131836960M_iof.cub to=centered.cub
Center the input image about the center of mass using the default interpolation.
GUI Screenshot
Input Image
Output Image
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![Mirror Gui](javascript:popUpNewWindow ("assets/image/CenterGui.jpg",720, 1150))
![Input image](javascript:popUpNewWindow ("assets/image/EN0131836960M_iof.jpg",512, 512))
![Output image showing results of the center application.](javascript:popUpNewWindow ("assets/image/centered.jpg",512, 512))
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:09 |