Publication detail

Properties of Entropy Coding for 3D DCT Video Compression Method

FRÝZA, T.

Original Title

Properties of Entropy Coding for 3D DCT Video Compression Method

English Title

Properties of Entropy Coding for 3D DCT Video Compression Method

Type

conference paper

Language

en

Original Abstract

This contribution presents a basic structure of video compression coder based on Three Dimensional Discrete Cosine Transform (3D DCT). Mainly, this paper deals with a optimal method of forming the 3D DCT frequency coefficients into output bit stream. It is well known the number of non zero frequency coefficients depends on the video sequence character. The sequence with a slow motion evokes a low number of coefficients and vice versa the dynamic sequence produces a high number of frequency coefficients, thus the compress ratio of an encoded sequence tends to be low. It could be proved the compress properties of 3D DCT encoder do not depends only on scene character but can be improved by the entropy coder and by the way how the coefficients are scanned. The scanning order optimized for the 3D DCT and a content of the dictionary for Huffman coder is proposed in this paper.

English abstract

This contribution presents a basic structure of video compression coder based on Three Dimensional Discrete Cosine Transform (3D DCT). Mainly, this paper deals with a optimal method of forming the 3D DCT frequency coefficients into output bit stream. It is well known the number of non zero frequency coefficients depends on the video sequence character. The sequence with a slow motion evokes a low number of coefficients and vice versa the dynamic sequence produces a high number of frequency coefficients, thus the compress ratio of an encoded sequence tends to be low. It could be proved the compress properties of 3D DCT encoder do not depends only on scene character but can be improved by the entropy coder and by the way how the coefficients are scanned. The scanning order optimized for the 3D DCT and a content of the dictionary for Huffman coder is proposed in this paper.

Keywords

Video compression, Huffman coding, coding dictionary, scanning order, 3D~DCT coefficients.

RIV year

2007

Released

24.04.2007

Publisher

Dept. of Radio Electronics

Location

Brno

ISBN

978-1-4244-0821-4

Book

Proceedings of 17th International Conference Radioelektronika 2007

Pages from

467

Pages to

470

Pages count

4

BibTex


@inproceedings{BUT22462,
  author="Tomáš {Frýza}",
  title="Properties of Entropy Coding for 3D DCT Video Compression Method",
  annote="This contribution presents a basic structure of video compression coder based on Three Dimensional Discrete Cosine Transform (3D DCT). Mainly, this paper deals with a optimal method of forming the 3D DCT frequency coefficients into output bit stream. It is well known the number of non zero frequency coefficients depends on the video sequence character. The sequence with a slow motion evokes a low number of coefficients and vice versa the dynamic sequence produces a high number of frequency coefficients, thus the compress ratio of an encoded sequence tends to be low. It could be proved the compress properties of 3D DCT encoder do not depends only on scene character but can be improved by the entropy coder and by the way how the coefficients are scanned. The scanning order optimized for the 3D DCT and a content of the dictionary for Huffman coder is proposed in this paper.",
  address="Dept. of Radio Electronics",
  booktitle="Proceedings of 17th International Conference Radioelektronika 2007",
  chapter="22462",
  institution="Dept. of Radio Electronics",
  year="2007",
  month="april",
  pages="467--470",
  publisher="Dept. of Radio Electronics",
  type="conference paper"
}