JPEG transcompressor and Internet applications

Author

Lan, Tse-Hua ; Tewflk, A.H. ; Hu, Po-Chin

Author_Institution

Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

400

Lastpage

409

Abstract

In this paper we design a novel transcoding algorithm to transcode and compress a JPEG or MPEG bitstream to a fully embedded one. Due to the efficiency of multigrid embedded (MGE) coding used to code non-zero quantized DCT coefficients, it actually compresses JPEG or MPEG bitstreams from 9% to 30%. This “transcompression” method has many applications for the Internet and multimedia networks. Since most “original” images or video files stored on computers around the world are in JPEG or MPEG formats, our algorithm provides a simple and efficient way to redistribute pictures/video files across the Internet

Keywords

Internet; data compression; discrete cosine transforms; image coding; multimedia communication; multimedia computing; Internet; JPEG bitstream compression; JPEG bitstream transcoding; JPEG transcompressor; MPEG bitstream compression; MPEG bitstream transcoding; multigrid embedded coding; multimedia networks; nonzero quantized DCT coefficient coding; picture redistribution; transcoding algorithm; video file redistribution; Application software; Bandwidth; IP networks; ISDN; Image coding; Quality of service; Transform coding; Video compression; Video sharing; Web and internet services;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 1999. SiPS 99. 1999 IEEE Workshop on

Conference_Location

Taipei

ISSN

1520-6130

Print_ISBN

0-7803-5650-0

Type

conf

DOI

10.1109/SIPS.1999.822345

Filename

822345