A Flexible R-D-Based Multiple Description Scheme for JPEG 2000

Abstract

Abstract-Multiple description coding (MDC) is a good way to combat packet losses in error-prone networks subject to packet erasures. However, redundancy tuning is often difficult, and this makes the generation of descriptions with good redundancy-ratedistortion performance a hard job. Moreover, the complexity of generating more than two descriptions represents a strong limitation to MDC. In this letter, we propose a method that exploits the data rate-distortion characteristics to generate multiple descriptions for JPEG 2000 with tunable redundancy levels. The identification of the best number of descriptions as a function of the network conditions is also addressed.

Multiple Descriptions Based on Multirate Coding for JPEG 2000 and H.264/AVC

“…A similar method has been proposed for intraframe, wavelet-based video coding in [22]. The scheme has been generalized to an arbitrary number of descriptions in [23]. In [5], a further generalization is proposed, where an arbitrary number of descriptions are generated starting from data encoded at different rate values.…”

“…In case a constraint on the minimum side quality is imposed, the optimal solution amounts to using only two rate values to encode data subsets and generate the descriptions. This solution, which is labelled 2-rate allocation, was already heuristically identified in [23], where the expected PSNR at the receiver side is optimized using only two rate values. In the rest of this paper, results referring to the 2-rate allocation can be considered as representative of the Case I scenario.…”

“…The rate values are selected so as to optimize the average PSNR (Case II in Section IV-B). The results provided by the 2-rate allocation strategy in [23], are reported as a benchmark, and are also representative of the Case I scenario in Section IV-B.…”

Low-complexity unbalanced multiple description coding based on balanced clusters for adaptive peer-to-peer video streaming

“…This highcomplexity computation should be avoided when real-time implementation is desired because of the low processing power of the receiving peer. In [8,9], Tillo et al proposed a wavelet-based balanced multiple description image coding which can be conceptually extended to video coding. The main idea in [8] is focused on grouping the CBs with similar rate-distortion (R-D) characteristics into groups with equal number of members.…”

A Comparison Between ULP and MDC With Many Descriptions for Image Transmission

“…In [9], two JPEG 2000 streams are generated, at rates and , and two balanced descriptions are obtained by merging codeblocks encoded at either rate. The scheme has been generalized to in [10]. In [2] a similar algorithm is proposed to achieve descriptions from a memoryless Gaussian source encoded at rate values.…”