Parent Topic: Supported File Formats

Laser-Scan (LSC)

Five of the seven types of Laser-Scan image files are supported by the GeoGateway library. Functions exist to read, update, and create Laser-Scan files. Image update of compressed files is not possible.

There is no support for georeferencing, nor any auxiliary data other than pseudocolour tables (PCTs) with Laser-Scan files.

The supported Laser-Scan file types are:

The RLE and PackBits compressed bitmap file types (1 and 6) are not supported at this time.

The type 3 compressed pseudocoloured image files use a simple run length encoding scheme. The image channel may not be updated after the initial creation. The pseudocolour table (PCT) may be stored in a related .PAL file, in which case it is available to read. If the .PAL file does not exist the pseudocolours are lost. ``.PAL'' files are not created on export, and thus a PCT cannot be written out with a new pseudocoloured file.

Export of LaserScan files is supported. These files are exported with a type of "LSC".

Only 8-bit image channels and bitmap images may be exported.

Georeferencing, and channel descriptor information is written to an ``.aux'' file in the same directory as the laser-scan file.

The option "COMP" is used to specify compressed output. The option "PCT" is used to add a pseudocolour table.

See Also: Works Create Panel, LINK, FIMPORT, FEXPORT

Parent Topic: Supported File Formats
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