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Title: Transform coding of pictorial data
Author: Cham, W. K.
ISNI:       0000 0001 3526 1882
Awarding Body: Loughborough University of Technology
Current Institution: Loughborough University
Date of Award: 1983
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By using transform coding, image transmission rates as low as 0.5 bit/pel can be achieved. Generally, the bit rate reduction is achieved by allocating fewer bits to low energy high order coefficients, However, to ensure reasonably good picture quality, a large number of bits has to be allocated to high energy dc coefficients for both fine quantization and good channel error immunity, A technique has been developed that, in some cases, allows the de coefficients to be estimated at the receiver, thus eliminating a major source of difficulty with respect to channel errors.
Supervisor: Not available Sponsor: British Telecommunications, Research Establishment
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Information theory & coding theory