Advances in Visual Data Compression and Communication

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19.3 Source Coding 431

Source

Encoder

(a)

Source

Decoder

s

y

ŝ

Source

Encoder

(

b)

Source

Decoder

s

C={ c(1),c(2),...,c(N)

}

ŝ

Figure 19.4 Distributed source coding without/with Cloud sources.

viewpoint of Shannon’s information theory, it does not look like source coding. Fur-

thermore, it cannot achieve a good reconstruction under the MSE criteria.

Because Cloud sources are assumed to be available at the receiver, one more rea-

sonable solution should be distributed source coding (DSC). In conventional DSC, as

shown in Figure 19.4a, a correlated source y, called side information, has been iden-

tified at the receiver. Input source s is first coset quantized ...