Empirical Evaluation of Boundary Policies for Wavelet-based Image Coding


Schremmer, Claudia


URL: http://download.springer.com/static/pdf/330/chp%25...
Document Type: Conference or workshop publication
Year of publication: 2001
Book title: Wavelet analysis and its applications : Second International Conference, WAA 2001, Hong Kong, China, December 18 - 20, 2001, proceedings
The title of a journal, publication series: Lecture Notes in Computer Science
Volume: 2251
Page range: 4-15
Author/Publisher of the book
(only the first ones mentioned)
:
Tang, Yuan Yan
Place of publication: Berlin [u.a.]
Publishing house: Springer
ISBN: 3-540-43034-2
Publication language: English
Institution: School of Business Informatics and Mathematics > Praktische Informatik IV (Effelsberg -2017)
Subject: 004 Computer science, internet
Abstract: The wavelet transform has become the most interesting new algorithm for still image compression. Yet there are many parameters within a wavelet analysis and synthesis which govern the quality of a decoded image. In this paper, we discuss different image boundary policies and their implications for the decoded image. A pool of gray-scale images has been wavelet-transformed at different settings of the wavelet filter bank and quantization threshold and with three possible boundary policies. Our empirical evaluation is based on three benchmarks: a first judgment regards the perceived quality of the decoded image. The compression rate is a second crucial factor. Finally, the best parameter settings with regard to these two factors is weighted with the cost of implementation. Contrary to the JPEG2000 standard, where mirror padding is implemented, our investigation proposes circular convolution as the boundary treatment.

Dieser Eintrag ist Teil der Universitätsbibliographie.




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Schremmer, Claudia Empirical Evaluation of Boundary Policies for Wavelet-based Image Coding. Tang, Yuan Yan Lecture Notes in Computer Science 2251 4-15 In: Wavelet analysis and its applications : Second International Conference, WAA 2001, Hong Kong, China, December 18 - 20, 2001, proceedings (2001) Berlin [u.a.] [Conference or workshop publication]


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