Design of multi-mode depth buffer compression for 3D graphics system

Author

Jung, Tzung-Rung ; Van, Lan-Da ; Sheu, Teng-Yao ; Lin, Cheng-Wei ; Fang, Wai-Chi

Author_Institution

Dept. of Comput. Sci., Nat. Chiao Tung Univ., Hsinchu

fYear

2008

fDate

June 23 2008-April 26 2008

Firstpage

789

Lastpage

792

Abstract

An innovative multi-mode depth buffer compression algorithm has been developed for 3D graphics system. It adaptively compresses the depth buffer data according to different scene changes by employing 19 compression modes generated from three compression algorithms including DDPCM, HA, and general DDPCM. Furthermore, this novel algorithm supports one-plane and two-plane compression modes and manipulates break points more efficiently. For 8x8 tile size and 16-bit depth values, the proposed multi-mode algorithm can achieve 1.91:1 compression ratio on average and improve 76.9% and 39.4% compared with the HA and the DDPCM compression methods, respectively. The modified efficient depth buffer compression can achieve 10.56:1 and 7.76:1 compression ratio in one-plane mode and two-plane mode, respectively. The modified DDPCM can achieve 6.48:1 and 5.39:1 compression ratio in one-plane mode and two-plane mode, respectively.

Keywords

computer graphics; data compression; 3D graphics system; compression ratio; multimode depth buffer compression; one-plane compression modes; two-plane compression modes; Application software; Bandwidth; Compression algorithms; Computer graphics; Encoding; Global Positioning System; Graphical user interfaces; Layout; Pulse modulation; Tiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2008 IEEE International Conference on

Conference_Location

Hannover

Print_ISBN

978-1-4244-2570-9

Electronic_ISBN

978-1-4244-2571-6

Type

conf

DOI

10.1109/ICME.2008.4607553

Filename

4607553