By Feng Wu

ISBN-10: 1439850461

ISBN-13: 9781439850466

ISBN-10: 1439855609

ISBN-13: 9781439855607

ISBN-10: 1439875146

ISBN-13: 9781439875148

ISBN-10: 1439883246

ISBN-13: 9781439883242

ISBN-10: 1482234130

ISBN-13: 9781482234138

ISBN-10: 1482234157

ISBN-13: 9781482234152

Visible info is without doubt one of the richest and so much bandwidth-consuming modes of conversation. to fulfill the necessities of rising purposes, strong facts compression and transmission thoughts are required to accomplish hugely effective communique, even within the presence of transforming into communique channels that provide elevated bandwidth.Presenting the result of the author's years of study on visible data Read more...

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Thomas’s book Elements of Information Theory [5], which is a comprehensive book about Shannon’s information theory. We do not pay much attention to either the completeness of the theory or the details of how to prove the theorems step by step. Instead, we try to highlight the core ideas behind the theory and make them more intuitively understood for further practical research on visual data compression and communication. The readers, who are interested in the entire information theory, can find information on this subject by Shannon [4] and Cover and Thomas [5].

Correspondingly, the pictures coded by using motion compensation are called inter pictures. As we have discussed, neighboring pixels have similar values. 3a. The spatial redundancies are exploited by transform. Discrete cosine transform (DCT) is widely used in most existing image and video coding standards. Its transform matrix T is obtained as a function of cosines [ti, j ] =        1 (2 j + 1)iπ cos N 2N 2 (2 j + 1)iπ cos N 2N i = 0, j = 0, 1, · · · , N − 1 . 1) i = 1, 2, · · · , N − 1, j = 0, 1, · · · , N − 1 The transform tries to describe visual data in frequency domain instead of pixel domain.

In other words, the source sequence Sn is first compressed into its most efficient representation and then the coded source sequence is protected ✐ ✐ ✐ ✐ ✐ ✐ ✐ ✐ 20 1 Information Theory by the appropriate channel code. If the source sequence is AEP and the block length n is large enough, the two-stage method is as good as any other method of transmitting information over a noisy channel. It is known as Shannon’s separate source channel. This separate result has some important practical implications.

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Advances in Visual Data Compression and Communication: Meeting the Requirements of New Applications by Feng Wu


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