QBASMBLE

Description

QBASMBLE lets you assemble QuickBird tiles into a single image with the associated RPC model information that is used with other functions or added to an OrthoEngine project.

Parameters

Name	Type	Caption	Length
MFILE *	String	Input file name, directory, or text file	1 - 192
FILO *	String	Output file name	1 - 191
RPBFILE	String	RPB text file	0 - 191
IMDFILE	String	IMD text file	0 - 191

* Required parameter

Parameter descriptions

MFILE

Specifies the name of a folder, image file, or text file that contains the images to be assembled into one scene. Wildcards (*) can be used.

MFILE can be set using any of the following options:

a specific data file name or directory path and file name; for example, "irvine.pix" or "c:\data\irvine.pix"
a specific file name pattern or all of the files in a folder; for example, "c:\data\*.pix" or "c:\data"
an existing text file that contains references to multiple files with, optionally, different parameter settings on a per file basis; for example, "c:\list.txt"

If a wildcard character (*) is used, the list of files that match the format and specified naming convention are processed with the set parameters.

If a folder name is specified for MFILE, all recognized image files (those that match the format and the naming convention) are processed using the set parameters.

If the text file option is used, the following general rules apply:

Specify a .txt extension for the file containing multiple files and different parameter values.
List each set of parameters on its own line in the given order.
Specify string parameters within quotation marks.
Do not specify numeric parameters within quotation marks.
A quotation mark preceded by a backslash is used as part of the string. For example, 'ab\"c' is used as: ab"c.
Use an exclamation mark (!) before writing a comment in the text file.
Use semi-colons to delimit the parameters.
Leave the position between the semi-colons empty (";;") if you do not want to specify a value. Alternatively, if there are no remaining parameters to be specified on the end of a line, you may leave it blank.
Parameters in a text file may or may not be specified in the function:
- If a parameter is specified in the function and in the text file, the value provided in the text file is used.
- If a parameter is not specified in the text file, the parameter can be set in the function.

FILO

Specifies the output PCIDSK file that will contain the complete image. If the specified file already exists, it is overwritten.

RPBFILE

Specifies the name of the input RPB text file that provides the coefficients that define the rational functions math model for the scene. If this parameter is not specified, QBASMBLE automatically find the RPB text file in the data set.

IMDFILE

Specifies the name of the input IMD text file. If this parameter is not specified, QBASMBLE automatically find the IMD text file in the data set.

Details

QBASMBLE lets you assemble QuickBird tiles into a single image that maintains the RPC information that is used with other functions or added to an OrthoEngine project.

Because of CD size limitations, QuickBird images can be delivered as image tiles with RPC data. The RPC data is used with the rational functions math model and covers the entire scene, not the individual tiles. You must, therefore, reassemble the tiles into one scene before importing them into a project.

QBASMBLE only supports QuickBird data in NITF format or in TIFF format with accompanying RPB files.

Example

Assemble QuickBird image tile files in QBlist.txt into one PCIDSK file called QBAssembled.pix.

EASI>MFILE = "pci\QBlist.txt"
EASI>FILO = "pci\QBAssembled.pix"
EASI>RPBFILE=
EASI>IMDFILE=
EASI>r QBASMBLE

Environments	PYTHON :: EASI :: MODELER
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