WE2.R4.3

One-Shot Wyner–Ziv Compression of a Uniform Source

Oğuzhan Kubilay Ülger, Elza Erkip, New York University, United States

Session:
Entropy coding, compression and quantization

Track:
10: Source Coding and Data Compression

Location:
Omikron II

Presentation Time:
Wed, 10 Jul, 12:10 - 12:30

Session Chair:
Elza Erkip, NYU
Abstract
In this paper, we consider the one-shot version of the classical Wyner-Ziv problem where a source is compressed in a lossy fashion when the decoder has access to a correlated side information. Following the well-known entropy constrained scalar quantization framework, we assume scalar quantization followed by variable length entropy coding. We assume a uniform source, whose compression is shown to be equivalent to compression of simple processes characterized by low-dimensional features within a high-dimensional ambient space, such as images. We find upper and lower bounds to the entropy-distortion functions for quantized and noisy side information, and illustrate that the bounds get tighter as the compression rate increases.
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