A frequency scalable coding scheme employing pyramid and subband techniques

A flexible layered coding scheme using block-based DCT domain decimation has been simulated in software. A conditional replacement scheme which switches adaptively between the pyramid and subband approaches at the coefficient level was studied. Experimental results comparing the adaptive scheme agai...

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Vydáno v:IEEE transactions on circuits and systems for video technology Ročník 4; číslo 2; s. 203 - 207
Hlavní autoři: Tan, T.K., Pang, K.K., Ngan, K.N.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.04.1994
Institute of Electrical and Electronics Engineers
Témata:
Applied sciences
B-ISDN
Bit rate
Coding, codes
Computer architecture
Decoding
Exact sciences and technology
Frequency
HDTV
Information, signal and communications theory
Propagation losses
Signal and communications theory
Signal resolution
Telecommunications and information theory
Video on demand
Block code
Experimental result
Subband decomposition
Coding
Cosine transform
Discrete transformation
ISSN:1051-8215
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Shrnutí:A flexible layered coding scheme using block-based DCT domain decimation has been simulated in software. A conditional replacement scheme which switches adaptively between the pyramid and subband approaches at the coefficient level was studied. Experimental results comparing the adaptive scheme against the pyramid approach show that this new approach increases the overall coding efficiency of the scalable coder by up to 1 dB.< >
Bibliografie:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1051-8215
DOI:10.1109/76.285629