MODEL2RPC

Description

MODEL2RPC generates a rational-polynomial-coefficient-model segment or text/xml file from an input math-model segment. A rational-polynomial coefficient is known as an RPC.

Parameters

Name	Type	Length	Value range
InputMMSeg: Input-math-model segment	BIN port	0 - 1
Output: Output-math-model layer	BIN port	0 - 1
Output type	String	0 - 1	RPC layer|TEXT file Default: RPC layer
Output RPC text file	String	0 -
RPC elevation reference	String	0 - 1	Default: ELLIPS
Report	String	0 - 192	See parameter description

Parameter descriptions

InputMMSeg: Input-math-model segment

The input-math-model segment from which to generate the RPC model. If MMSEG is zero, it will generate RPC model from the geocoded image.

Output: Output-math-model layer

The math-model layer in which to store the computed model.

This port is used only if the output-type parameter is set to create an RPC layer.

Output type

The type of output to create: an RPC layer or a text file.

Available options are:

• RPC layer
• TEXT file

Output RPC text file

The name of the text file to create and to which to write the RPC information.

This parameter is used only if the value of OutputType is TEXT file.

The extension of the specified output file will control how the RPCs are written. That is, when you specify .txt, the format of the output RPC is an older one supported by satellites, such as IKONOS and GeoEye. Alternatively, when you specify .rpb, the output format is a newer one supported by satellites, such as QuickBird and WorldView. If you specify .xml, the output format will be in xml

RPC elevation reference

The computed RPC-elevation reference.

Available options are:

• ELLIPS: elevations are referenced to the ellipsoid
• MSL: elevations are referenced to Mean Sea Level (MSL)

The default is ELLIPS (ellipsoid).

Report

Specifies where to direct the generated report.

Available options are:

• LOG: generates a report on the terminal (default)
• <modulename.RPT>: appends a report to the module's RPT file
• DISK: generates a report on file "IMPRPT.LST"

Details

MODEL2RPC converts a math model inside an image file to a rational-function-model segment.