An unequal error protection method for progressively compressed 3-D meshes

Ai-Regib,; Altunbasak,; Rossignac,

doi:10.1109/icassp.2002.1006174

Cited by 2 publications

(3 citation statements)

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“…We achieve this by reducing the number of transmitted triangles. In contrast, in Al-Regib et al [2002], we reduce the number of source-coding bits by using coarser quantizers for the geometry information, while we transmit all triangles. This article is organized according to the following plan.…”

Section: Introductionmentioning

confidence: 95%

“…The method proposed here lies within the "Bit Allocation" block where source and channel codes are optimized according to the channel behavior in order to maximize the expected decoded model quality. In a recent paper [Al-Regib et al 2002], we proposed an error-resilient transmission method for progressively compressed 3D models, where source and channel coders are designed independently. That is, the error-protection bit-budget is assumed given.…”

Section: Introductionmentioning

confidence: 99%

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Error-resilient transmission of 3D models

2005

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In this article, we propose an error-resilient transmission method for progressively compressed 3D models. The proposed method is scalable with respect to both channel bandwidth and channel packet-loss rate. We jointly design source and channel coders using a statistical measure that (i) calculates the number of both source and channel coding bits, and (ii) distributes the channel coding bits among the transmitted refinement levels in order to maximize the expected decoded model quality. In order to keep the total number of bits before and after applying error protection the same, we transmit fewer triangles in the latter case to accommodate the channel coding bits. When the proposed method is used to transmit a typical model over a channel with a 10% packet-loss rate, the distortion (measured using the Hausdorff distance between the original and the decoded models) is reduced by 50% compared to the case when no error protection is applied.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Error-resilient transmission of 3D models

2005

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“…Some considered source coding by splitting a mesh into partitions, where each partition is an independent unit for encoding and decoding [2], [12]. Others adopted channel coding by adding redundancy into the bit stream to make it more robust against channel errors [1]. It deserves further investigation to integrate source coding and channel coding in one scheme.…”

Section: Previous Work and Proposed System Overviewmentioning

confidence: 99%

Robust graphics streaming in walkthrough virtual environments via wireless channels

Kuo

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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A graphics streaming system for walkthrough virtual environments is presented that facilitates reliable delivery and interactive browse of 3D models via wireless channels. Models are compressed by a partitioning-based progressive mesh compression algorithm to enable decorrelation of partitions and offer finer granularity. Then, the data of the virtual world are prioritized and organized according to viewer's requests. Finally, a transmission scheme is developed to adapt the sending rate to the available bandwidth and offer data protection techniques. Experimental results demonstrate that the proposed system reduces the required transmission bandwidth and provides an acceptable visual quality even at low bit rates.

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An unequal error protection method for progressively compressed 3-D meshes

Cited by 2 publications

References 0 publications

Error-resilient transmission of 3D models

Error-resilient transmission of 3D models

Robust graphics streaming in walkthrough virtual environments via wireless channels

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