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FRÝZA, T.
Original Title
Properties of Entropy Coding for 3D DCT Video Compression Method
Type
conference paper
Language
English
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.
Keywords
Video compression, Huffman coding, coding dictionary, scanning order, 3D~DCT coefficients.
Authors
RIV year
2007
Released
24. 4. 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", booktitle="Proceedings of 17th International Conference Radioelektronika 2007", year="2007", pages="467--470", publisher="Dept. of Radio Electronics", address="Brno", isbn="978-1-4244-0821-4" }