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Images \ Raster images \ .rgb - Silicon Graphics RGB

What is .rgb file?

Silicon Graphics RGB is a raster image. Images are uncompressed.
File extension is .rgb.

Software handling .rgb files

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Structure of .rgb images

The header of Silicon Graphics RGB image is 512 bytes long.
Name Type Description
Magic UInt32 Always = 474
StorageFormat UInt8 0 = uncompressed, 1 = RLE
BytesPerPixel UInt8 1 = 8 bits/pixel, 2 = 16 bits/pixel
Dimension UInt16 = 1, 2 or 3
Width UInt16
Height UInt16
Colortype UInt16 1 = grayscale, 3 = RGB, 4 = RGBA
PixMin UInt32 Lowest pixel value in the image
PixMax UInt32 Highest pixel value in the image
Unknown UInt32 Usually = 0
Filename Char8[80] Null-terminated filename
Colormap UInt32 0 = normal, 1= dithered (obsolete), 2 = indexed (obsolete), 3 = not an image but a colormap
Padding UInt8[404] 404 bytes with value of 0

Data types:
UInt8, UInt16, UInt32, UInt64 - Unsigned Integer 8 bit, 16 bit, 32 bit, 64 bit
Int8, Int16, Int32, Int64 - Signed Integer 8 bit, 16 bit, 32 bit, 64 bit
UMint16, UMint32 - Unsigned Motorola Integer 16 bit, 32 bit (Big Endian)
Char8, Char16 - Char 8 bit, 16 bit

Real world .rgb samples

Here are some real world example pictures.



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