Polynomial Texture Map

http://the-fr.org/id/file-format/972

Name: Polynomial Texture Map

Version:

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.

Deprecated: false

MIMEType:

PUID: fmt/519

sameAs : PRONOM: http://www.nationalarchives.gov.uk/PRONOM/fmt/519

Extension: ptm

Magic: true

Container Magic: false

Binary Magic: true

Signature Priority Over:

See Also (e.g. Wikidata, Library of Congress):

• http://www.wikidata.org/entity/Q52230534
• https://www.loc.gov/preservation/digital/formats/fdd/fdd000487.shtml

Software that can read the format:

Alias:

Class: http://the-fr.org/def/format-registry/FileFormat

Type: http://the-fr.org/def/format-registry/RasterImage

SPARQL: http://the-fr.org/public/sparql/endpoint.php?query=describe+%3Chttp://the-fr.org/id/file-format/972%3E&output=&jsonp=&key=&show_inline=1