Isis 3 Application Documentation
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Create a mosaic using map projected cubes
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This program allows the user to create a mosaic using map projected cubes. An individual cube can be placed in a pre-existing mosaic. An option exists to create the mosaic by allowing the user to specify the latitude/longitude range for the output mosaic. Note that the input cube and mosaic must have the same ProjectionName, PixelResolution, EquatorialRadius, PolarRadius, LatitudeType, and LongitudeDirection as well as projection specific keywords (e.g., CenterLatitude, CenterLongitude). This application regardless of any priority and flags set, will always place an input pixel on a NULL mosaic pixel. This application also has the ability to track the pixel origin.
There are four different ways/priorities (input, mosaic, band, average) for how the input image has to be placed on the mosaic.
Priority Input will place the input image on top of the mosaic.
Priority Mosaic will place the input image beneath the mosaic.
Priority Band will place the input image on the mosaic based on the "Lessser" or "Greater" criteria between user defined band in the input and the mosaic images.
Priority Average will average the valid pixels in the input and mosaic images. For each mosaic band, a count band is maintained. The count band keeps track of the number of images involved in the averaging of the dn value for each pixel in the mosaic. Choosing this priority will cause the mosaic to have twice the number of bands of the input image, with a count band for each band. Hence the file size of the mosaic is doubled due to the count band.
In case of special pixels and the special pixel flags being enabled, the details for each priority is described below.
Tracking can be set at the time of Mosaic creation only and cannot be turned on after the mosaic is created. But the tracking will be turned off for multiband ONTOP and BENEATH priority even though it was turned on while creating the mosaic. Tracking for multiband input with ONTOP priority is possible only if all the Special Pixel Flags are set to True else the Tracking will be turned off. ONTOP priority basically places all the valid input pixels onto the mosaic unless the special pixel flags are turned on or if mosaic has a NULL pixel. In a multi band scenario, a pixel origin in particular line and sample will not be the same in all the different bands, which means we have to keep track of every pixel in every band. i.e. the size of the tracking bands will be the same as the number of bands in the mosaic.i.e the number of bands will be doubled.
WARNING: If Tracking is turned on in a mosaic, any subsequent applications that modify "dn" values will corrupt the Tracking band. It may be necessary to remove the Tracking band from the mosaic and then add it back after all the processing is complete. See "crop" and "cubeit".
Priority BAND can track origin for multi band input image based on a specified band using LESSER or GREATER than criteria. Each pixel in the specified band is compared to the corresponding pixel in the chosen band in the mosaic based on the chosen criteria. This comparison true or false is used for all the other bands whether the input pixel is copied onto the mosaic and hence the origin for that pixel is stored. Band can be chosen by choosing the TYPE, BANDNUMBER or KEYWORD. If BANDNUMBER is chosen then the band number can be entered in the NUMBER field. If KEYWORD is chosen then PVL key name and value from the BANDBIN group can be entered in the KEYNAME and KEYVALUE fields.
For example, for a multi band input with BAND priority, if the BAND chosen is Emission Angle band(EMA), if input pixels are (30,30,30) in EMA Band for some sample, line and the corresponding pixels in the EMA band in the mosaic has (75, 75, 75) and the criteria is GREATER than, then since input pixels are not GREATER than corresponding mosaic pixels, then the input pixels are not copied to the mosaic, so also the corresponding pixels in all the other bands in the input. Hence the origin for those pixels remains unchanged. If LESSER than was the criteria, then all the corresponding pixels in all the input bands will be copied to the mosaic and the origin for those pixels is the current input image.
There are options like MATCHBANDIN, if set requires the specfied input bands to match the mosaic bands and the bands can be anywhere in the mosaic but must be contiguous for multi-band. If MATCHBANDIN is not set then any input image can be placed on the mosaic within it's boundaries.
Options HIGHSATURATION, LOWSATURATION and NULL if set will cause the the input pixels with these values to be copied to the mosaic for ONTOP and BAND priorities regardless of the CRITERIA for the BAND priority. These options are not supported for BENEATH priority.
Currently Tracking can be viewed in the Advanced Tool Tracking option of the qview application. Following are the Tracking info:
Index : Zero based and is in the order in which the image was placed on the mosaic. No origin is represented as -1.
FileName: File name of input image
Serial Number:Serial Number of the input image
Following are the values for the origin band depending on the pixel type
Pixel Type (bits) | Default (No Origin) | Start Value | Max Value | Total Images Supported |
---|---|---|---|---|
32 | -16777216 | -16777215 | 16777216 | 33549932 |
16 | -32768 | -32767 | 32767 | 65535 |
8 | 0 | 1 | 255 | 255 |
Following is the table for Special Pixel options, input, mosaic
pixels and the resulting output for different priorities.
Tags: F(FALSE), T(TRUE), V(VALID), HS(HIGH SATURATION), LS(LOW SATURATION),
S(SPECIAL PIXEL HS, LS, NULL), N(NULL), I(INPUT), M(MOSAIC), HL(HS,LS)
Priority Beneath | ||||||||||||||
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Priority OnTop | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Priority Band | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Priority Average | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Name | Description |
---|---|
FROM | Cube to place in the mosaic |
MOSAIC | Mosaic output cube |
PRIORITY | The priority of pixel placement |
Name | Description |
---|---|
TYPE | Indicate the Band name or number to be used for comparison |
NUMBER | Enter the Band Number |
KEYNAME | Enter the Key name as it appears in the PVL |
KEYVALUE | Enter the value associated with the "KEYNAME" |
CRITERIA | The criteria (Lesser or Greater) of pixel placement in a chosen band |
Name | Description |
---|---|
CREATE | Create the output mosaic |
TRACK | Track the mosaic origin |
MINLAT | Minimum Latitude |
MAXLAT | Maximum Latitude |
MINLON | Minimum Longitude |
MAXLON | Maximum Longitude |
Name | Description |
---|---|
MATCHBANDBIN | Enforce BandBin Group Match |
MATCHDEM | Enforce DEM Match |
HIGHSATURATION | Copy Input HS (Instrument and Representation) values |
LOWSATURATION | Copy Input LS (Instrument and Representation) values |
NULL | Copy Input NULL values |
This is the cube which will be placed into the mosaic. It must have a Mapping group which sufficiently matches the mosaic.
Type | cube |
---|---|
File Mode | input |
Filter | *.cub |
The mosaic cube which will have the input cube placed into it.
Type | cube |
---|---|
File Mode | output |
Filter | *.cub |
This parameter is used to select one of two ways to mosaic the pixels in areas of overlap.
Type | string | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Default | ONTOP | |||||||||||||||
Option List: |
|
The pixels in this band will be used for comparison between input image and the mosaic for a decision to be made in copying image into the mosaic.
Type | string | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Default | BANDNUM | |||||||||
Option List: |
|
The band number should match that in the "OriginalBand" of "BandBin" Group
Type | integer |
---|---|
Default | 1 |
The entered key name must match the key name in the "BandBin"
Type | string |
---|---|
Default | OriginalBand |
This value must match the value associated with the key name entered in the KEYNAME
Type | string |
---|---|
Default | 1 |
This parameter is used to select one of two ways to mosaic the pixels in areas of overlap when doing by band comparison.
Type | string | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Default | LESSER | |||||||||
Option List: |
|
This parameter is used to specify if the mosaic needs to be created.
Type | boolean |
---|---|
Default | NO |
Inclusions |
|
If selected the application will track the mosaic origin. Once origin is tracked, the tracker cannot be turned off.
Type | boolean |
---|---|
Default | FALSE |
This parameter specifies the minimum latitude to determine the bounding box of the mosaic
Type | double |
---|---|
Minimum | -90.0 (inclusive) |
Inclusions |
|
This parameter specifies the maximum latitude to determine the bounding box of the mosaic
Type | double |
---|---|
Maximum | 90.0 (inclusive) |
Greater Than |
|
Inclusions |
|
This parameter specifies the minimum longitude to determine the bounding box of the mosaic
Type | double |
---|---|
Inclusions |
|
This parameter specifies the maximum longitude to determine the bounding box of the mosaic
Type | double |
---|---|
Greater Than |
|
Inclusions |
|
This option causes the application to fail if the input bandbin group does not match the mosaic bandbin group.
Type | boolean |
---|---|
Default | TRUE |
This option causes the application to fail if the input DEM shapemodel does not match the mosaic's' shapemodel.
Type | boolean |
---|---|
Default | FALSE |
This option causes High Saturation values (both Instrument and Representation) in the input image to be automatically copied to the mosaic irrespective of the priority
Type | boolean |
---|---|
Default | FALSE |
This option causes Low Saturation values (both Instrument and Representation) in the input image to be automatically copied to the mosaic irrespective of the priority
Type | boolean |
---|---|
Default | FALSE |
This option causes NULL values in the input image to be automatically copied to the mosaic irrespective of the priority
Type | boolean |
---|---|
Default | FALSE |
Eric Eliason | 1986-01-02 | Original version |
Jeff Anderson | 2004-02-24 | Converted to Isis 3.0 |
Jeff Anderson | 2004-02-26 | Modified to not propagate input labels to the output mosaic |
Jeff Anderson | 2005-11-15 | Fixed bug with mapping groups not properly initialized or copied |
Jacob Danton | 2005-12-05 | Added appTest |
Elizabeth Miller | 2006-05-18 | Depricated CubeProjection and ProjectionManager to ProjectionFactory |
Elizabeth Miller | 2006-09-01 | Added the MATCHBANDBIN option that checks to make sure the input cube bandbin group matches the mosaic bandbin group. The default is true. |
Steven Lambright | 2008-05-13 | This program now utilizes ProcessMapMosaic |
Christopher Austin | 2008-09-19 | If the given cube falls outside the provided the mosaic, it will now be logged. (Removed some unused header files.) |
Christopher Austin | 2008-12-11 | Changed the parameters SLAT, ELAT, SLON, ELON to MINLAT, MAXLAT, MINLON, MAXLON in correlation with autimos. |
Sharmila Prasad | 2009-10-15 | Added option "TRACK" to track pixel origin. Also added new priority called BAND where specified input and mosaic band is compared for moving input to mosaic and to track the pixel origin. Added parameter "TYPE" to choose Band "NUMBER" or PVL "KEYWORD" from the BandBin group. If "BANDNUMBER" is chosen, then "NUMBER" is activated to enter band number. If "KEYWORD" is chosen then parameter "KEYNAME" and "KEYVALUE" are activated to enter key name and value from the BandBin group for band comparison. Band comparison "CRITERIA" are "LESSER" or "GREATER" than. Also there are options "HIGHSATURATION", "LOWSATURATION" and "NULL", set to true will cause HS, LS and NULL input pixels to be copied to the mosaic regardless of the priorities and criteria. These options are not supported for "BENEATH" priority. |
Sharmila Prasad | 2010-10-27 | Process Input File Attributes |
Sharmila Prasad | 2011-01-19 | Added "AVERAGE" priority where the mosaic will be average of valid input and mosaic pixels. |
Sharmila Prasad | 2011-01-24 | Option to match DEM and also added new group "mosaic" to hold ShapeModel attributes for the mosaic |
Sharmila Prasad | 2011-11-07 | Updated documentation for Average priority. Fixes #553 |