REVERSIBLE N-BIT TO N-BIT INTEGER HAAR-LIKE TRANSFORMS

Conference · Mon Jul 26 00:00:00 EDT 2004

DOI:https://doi.org/10.1109/DCC.2004.1281540· OSTI ID:15014571

Senecal, J G; Duchaineau, M A; Joy, K I

We introduce TLHaar, an n-bit to n-bit reversible transform similar to the S-transform. TLHaar uses lookup tables that approximate the S-transform, but reorder the coefficients so they fit into n bits. TLHaar is suited for lossless compression in fixed-width channels, such as digital video channels and graphics hardware frame buffers. Tests indicate that when the incoming image data has lines or hard edges TLHaar coefficients compress better than S-transform coefficients. For other types of image data TLHaar coefficients compress up to 2.5% worse than those of the S-transform, depending on the data and the compression method used.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15014571
• Report Number(s): UCRL-CONF-202451-REV-1; TRN: US200802%%1326
• Resource Relation: Conference: Presented at: 7th IASTED Conference on Computer Graphics and Imaging, Kauai, HI, United States, Aug 17 - Aug 19, 2004
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
BUFFERS
COMPRESSION
COMPUTER GRAPHICS