DISTRIBUTIONS OF 3D DCT COEFFICIENTS FOR VIDEO

被引：8

作者：

Bhaskaranand, Malavika ^{[1
]}

Gibson, Jerry D. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

来源：

2009 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1- 8, PROCEEDINGS | 2009年

关键词：

Video compression; Three-dimensional discrete cosine transform; DCT coefficient distributions; COSINE TRANSFORM; IMAGES;

D O I：

10.1109/ICASSP.2009.4959703

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The three-dimensional discrete cosine transform (3D DCT) has been proposed as an alternative to motion-compensated transform coding for video content. However, so far no definitive study has been done on the distribution of 3D DCT coefficients of video sequences. This study performs two goodness-of-fit tests, the Kolmogorov-Smirnov (KS) test and the chi(2)-test, to determine the distribution that best fits the 3D DCT coefficients of the luminance components of video sequences with low motion or structured motion. The results indicate that the DC coefficient can be well approximated by a Gaussian distribution and a majority of the high-energy AC coefficients can be approximated by a Gamma distribution. Knowledge of the coefficient distributions can be used to design quantizers optimized for 3D DCT coefficients and hence achieve better coding efficiency.

引用

页码：793 / 796

页数：4

共 18 条

[1] DISCRETE COSINE TRANSFORM [J].

AHMED, N ;

NATARAJAN, T ;

RAO, KR .

IEEE TRANSACTIONS ON COMPUTERS, 1974, C 23 (01) :90-93

[2]

Bauer M., 1995, Proceedings. DCC '95 Data Compression Conference (Cat. No.95TH8037), DOI 10.1109/DCC.1995.515561

[3]

Bellifemine F., 1992, Signal Processing: Image Communication, V4, P477, DOI 10.1016/0923-5965(92)90032-B

[4] Motion analysis in 3D DCT domain and its application to video coding [J].

Bozinovic, N ;

Konrad, J .

SIGNAL PROCESSING-IMAGE COMMUNICATION, 2005, 20 (06) :510-528

[5] 3D-DCT quantization as a compression technique for video sequences [J].

Chan, RKW ;

Lee, MC .

INTERNATIONAL CONFERENCE ON VIRTUAL SYSTEMS AND MULTIMEDIA - VSMM'97, PROCEEDINGS, 1997, :188-196

[6] Image probability distribution based on generalized gamma function [J].

Chang, JH ;

Shin, JW ;

Kim, NS ;

Mitra, SK .

IEEE SIGNAL PROCESSING LETTERS, 2005, 12 (04) :325-328

[7] STATISTICAL DISTRIBUTIONS OF IMAGE DCT COEFFICIENTS [J].

EGGERTON, JD ;

SRINATH, MD .

COMPUTERS & ELECTRICAL ENGINEERING, 1986, 12 (3-4) :137-145

[8]

JAYANT NS, 1984, DIGITAL CODING WAVEF, P34

[9] COMPARISON OF GENERALIZED GAUSSIAN AND LAPLACIAN MODELING IN DCT IMAGE-CODING [J].

JOSHI, RL ;

FISCHER, TR .

IEEE SIGNAL PROCESSING LETTERS, 1995, 2 (05) :81-82

[10] A mathematical analysis of the DCT coefficient distributions for images [J].

Lam, EY ;

Goodman, JW .

IEEE TRANSACTIONS ON IMAGE PROCESSING, 2000, 9 (10) :1661-1666

← 1 2 →