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7. JPEG2000 Coding Techniques Addressed to Images Containing No-Data Regions

Author

González-Conejero, Jorge, Aulí-Llinàs, Francesc, Bartrina-Rapesta, Joan, Serra-Sagristà, Joan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Blanc-Talon, Jacques, editor, Philips, Wilfried, editor, Popescu, Dan, editor, and Scheunders, Paul, editor

Published
2007
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12. JPEG2000 quality scalability without quality layers

Author

Auli-Llinas, Francesc and Serra-Sagrista, Joan

Subjects
Computer graphics -- Standards, Mathematical optimization -- Research, Image processing -- Technology application, Technology application, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Quality scalability is a fundamental feature of JPEG2000, achieved through the use of quality layers that are optimally formed in the encoder by rate-distortion optimization techniques. Two points, related with the practical use of quality layers, may need to be addressed when dealing with JPEG2000 code-streams: 1) the lack of quality scalability of code-streams containing a single or few quality layers and 2) the rate-distortion optimality of windows of interest transmission. Addressing these two points, this paper proposes a mechanism that, without using quality layers, provides competitive quality scalability to code-streams. Its main key-feature is a novel characterization of the code-blocks rate-distortion contribution that does not use distortion measures based on the original image, or related with the encoding process. Evaluations against the common use of quality layers, and against a theoretical optimal coding performance when decoding windows of interest or when decoding the complete image area, suggest that the proposed method achieves close to optimal results. Index Terms--Interactive image transmission, JPEG2000 standard, quality scalability, rate-distortion optimization.

Published
2008

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