Silicon Graphics (SGI) RGB Image .RGB, .RGBA, .BW Files

 

The Silicon Graphics Image filter imports and exports Silicon Graphics Image .RGB, .RGBA, and .BW files.

 

File Description

The .RGB, .RGBA, .BW formats originated on Silicon Graphics workstations and is/was used in a variety of high-end imaging applications, both Unix- and Windows-based.

 

File Name Extensions

.RGB, .RGBA, .BW

 

The filename extension is sometimes used to indicate the format of the image contained in the file, but is not required to do so. The extensions are typically .BW for black and white images, .RGB for 24-bit color images, and .RGBA for 32-bit color images with an alpha channel.

 

Format(s) Supported for Import

device-independent bitmap; 24, 32 bit per pixel color and 8-bit grayscale

 

Format(s) Supported for Export

device-independent bitmap; 24, 32 bit per pixel color and 8-bit grayscale

 

Import Method

Choose the File | Import command.

 

Export Method

Choose the File | Export command or select an image module and choose the File | Save Data command.

 

Export Options

Specify the export options in the Export Options dialog.

 

Import Restrictions/Limitations

Although the industry convention is for the file name extension .RGB to be used for 24-bit images, .RGBA to be used for 32-bit images, and .BW to be used for 8-bit grayscale images, the filter examines the contents of the file header to determine the pixel format and ignores the file name extension.

 

 

See Also

File Format Chart

File | Import

File | Export

File | Save Data

Export Options