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Properties

Summary
Name	Polynomial Texture Map
Version
Other names
Identifiers	PUID: fmt/519
Family
Classification	Image (Raster)
Disclosure
Description	Developed by Hewlett Packard, Polynomial texture maps (PTMs) are an extension to conventional texture maps that allow enhanced image quality. As opposed to storing a color per pixel, these PTM’s store second-order bi-quadratic polynomial coefficients per pixel. These polynomials model the changes that appear to a pixel color based on either light source position or viewing direction.
Orientation
Byte order
Related file formats	None.
Technical Environment
Released
Supported until
Format Risk
Developed by	Hewlett Packard Company
Supported by	Hewlett Packard Company
Source	Digital Preservation Department / The National Archives
Source date	01 May 2013
Source description
Last updated	01 May 2013
Note