Scalable Joint Source and Channel Coding of Meshes

This paper proposes a new approach for joint source and channel coding (JSCC) of meshes, simultaneously providing scalability and optimized resilience against transmission errors. An unequal error protection approach is followed, to cope with the different error-sensitivity levels characterizing the...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:IEEE transactions on multimedia Ročník 10; číslo 3; s. 503 - 513
Hlavní autoři: Cernea, D.C., Munteanu, A., Alecu, A., Cornelis, J., Schelkens, P.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.04.2008
Institute of Electrical and Electronic Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Applied sciences
Artificial intelligence
Channel coding
Channels
Codec
Codecs
Coding
Computer graphics
Computer science; control theory; systems
Computer systems and distributed systems. User interface
Decoding
Degradation
Distortion
Error correction codes
Error resilient coding
Exact sciences and technology
joint source and channel coding of meshes
L-infinite coding
MeshGrid
MPEG 4 Standard
Norms
Pattern recognition. Digital image processing. Computational geometry
Protection
Real time
Resilience
Scalability
Software
Studies
three-dimensional (3-D) graphics
Transmission error
unequal error protection
Multimedia
Error resilient coding
unequal error protection
Source coding
Scalability
Coding errors
joint source and channel coding of meshes
Image compression
Real time
Graphics
Codec
Metric
L-infinite coding
MeshGrid
Fast algorithm
Transmission error
Mathematical programming
three-dimensional (3-D) graphics
ISSN:1520-9210, 1941-0077
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:This paper proposes a new approach for joint source and channel coding (JSCC) of meshes, simultaneously providing scalability and optimized resilience against transmission errors. An unequal error protection approach is followed, to cope with the different error-sensitivity levels characterizing the various resolution and quality layers produced by the input scalable source codec. The number of layers and the protection levels to be employed for each layer are determined by solving a joint source and channel coding problem. In this context, a novel fast algorithm for solving the optimization problem is conceived, enabling a real-time implementation of the JSCC rate-allocation. An instantiation of the proposed JSCC approach is demonstrated for MeshGrid, which is a scalable 3-D object representation method, part of MPEG-4 AFX. In this context, the L-inflnite distortion metric is employed, which is to our knowledge a unique feature in mesh coding. Numerical results show the superiority of the L-inflnite norm over the classical L-2 norm in a JSCC setting. One concludes that the proposed joint source and channel coding approach offers resilience against transmission errors, provides graceful degradation, enables a fast real-time implementation, and preserves all the scalability features and animation capabilities of the employed scalable mesh codec.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:1520-9210
1941-0077
DOI:10.1109/TMM.2008.917407