Realization of lossless-to-lossy image coding compatible with JPEG standard by direct-lifting of DCT-IDCT

Author

Suzuki, Taizo ; Ikehara, Masaaki

Author_Institution

Dept. of Electron. & Electr. Eng., Keio Univ., Yokohama, Japan

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

389

Lastpage

392

Abstract

A discrete cosine transform (DCT) can be easily implemented in software and hardware for the JPEG and MPEG formats. Recently, some integer DCTs (IntDCTs) for lossless-to-lossy image coding have been proposed, but they do not satisfy enough compatibility with JPEG standard. This paper proposes a realization of lossless-to-lossy image coding which has higher compatibility with it than the conventional IntDCTs. Our IntDCT is implemented by direct-lifting of DCT and inverse DCT (IDCT) and has high performance in lossless image coding compared with any IntDCT while keeping high compatibility with JPEG standard. Finally, our method is validated by its application to lossless-to-lossy image coding.

Keywords

discrete cosine transforms; image coding; standards; DCT-IDCT; IntDCT; JPEG standard; MPEG formats; direct lifting; discrete cosine transform; integer DCT; lossless-to-lossy image coding; Bit rate; Discrete cosine transforms; Encoding; Image coding; Pixel; Transform coding; JPEG standard; direct-lifting; integer discrete cosine transform (IntDCT); lossless-to-lossy image coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing (ICIP), 2010 17th IEEE International Conference on

Conference_Location

Hong Kong

ISSN

1522-4880

Print_ISBN

978-1-4244-7992-4

Electronic_ISBN

1522-4880

Type

conf

DOI

10.1109/ICIP.2010.5654181

Filename

5654181