Design of Block Lifting-Based Discrete Cosine Transform Type-II and IV

Author

Suzuki, Taizo ; Ikehara, Masaaki

Author_Institution

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

fYear

2009

fDate

4-7 Jan. 2009

Firstpage

480

Lastpage

484

Abstract

This paper presents a novel lifting factorization of discrete cosine transform type-II and IV (DCT-II and IV). Although some conventional integer DCT-IIs (IntDCT-IIs) with block size 8 have been proposed, they are not generalized as arbitrary block size M. Using block lifting factorization which has an efficient structure for lossless-to-lossy image coding, we present IntDCT-IIs and IVs with arbitrary block size M that is called block lifting-based DCT-IIs and IVs (BLDCT-IIs and IVs). Finally, the validity of our method is proved by showing the results of lossless-to-lossy image coding in the most general case of the block size 8 and the extended size 16.

Keywords

discrete cosine transforms; image coding; BLDCT-II; BLDCT-IV; IntDCT-II; IntDCT-IV; block lifting factorization; block lifting-based DCT-II; block lifting-based DCT-IV; discrete cosine transform; integer DCT-II; integer DCT-IV; lossless-to-lossy image coding; Audio coding; Discrete cosine transforms; Discrete transforms; Image coding; Signal analysis; Signal synthesis; Transform coding; Video coding; Video compression; block lifting factorization; discrete cosine transform (DCT); lossless-to-lossy image coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop, 2009. DSP/SPE 2009. IEEE 13th

Conference_Location

Marco Island, FL

Print_ISBN

978-1-4244-3677-4

Electronic_ISBN

978-1-4244-3677-4

Type

conf

DOI

10.1109/DSP.2009.4785971

Filename

4785971