The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Feb. 09, 2011
Jim Rasmusson, Vellinge, SE;
Michael Doggett, Lund, SE;
Jacob Ström, Stockholm, SE;
Per Wennersten, Årsta, SE;
Jim Rasmusson, Vellinge, SE;
Michael Doggett, Lund, SE;
Jacob Ström, Stockholm, SE;
Per Wennersten, Årsta, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
Embodiments relate to compression and decompression of textures. A texel block () is compressed by specifying two major directions in the texel block () and defining the profiles of how the texel values change along the respective directions. The resulting compressed texel block () comprises two value codewords (), two line codewords (-) and a function codeword (). The two value codewords () are employed to calculate two texel values for the texel block (). The line codewords (-) are employed to determine equations of two lines () coinciding with the two major directions in the texel block (). Signed distances are calculated for each texel () from the texel position in the texel block () and to the two lines (). The signed distances are input to a function defined by the function codeword () to output two values from which weights are calculated and applied to the two texel values in order to get a representation of the texel value of a texel ().