SGI Image Reader/Writer

Licensing options for this format begin with FME Professional Edition.

The SGI Image (SGI) Reader/Writer allows FME to access data in the SGI Image format.

Overview

The SGI Image file format is a raster format developed by Silicon Graphics to store bitmap data. This format can store both greyscale and color images.

Reader Overview

FME considers a single SGI Image file to be a dataset. Each dataset contains a single FME raster feature.

Writer Overview

FME considers a dataset to be a folder name. The feature type of each dataset is the filename.

The SGI writer distinguishes duplicate output files by appending numbers to the filenames.

Note: SGI Image files will always be written as Run Length Encoded.

FME Raster Features

FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data. The topics below describe how FME processes raster data.

About FME Rasters Tiling and Mosaicking
Raster Properties Band Combining and Separating
Band Properties Band and Palette Selection
Palette Properties Raster Processing
Compression Raster versus Vector Features
Pyramiding Raster File Naming
Interleaving World Files
Interpretation and Data Type TAB Files
Palette Resolution  

SGI supports rasters with any number of bands that have a UInt8 data type.