A Synonymous Variational Perspective on the Rate-Distortion-Perception Tradeoff
The fundamental limit of natural signal compression has traditionally been characterized by classical rate-distortion (RD) theory through the tradeoff between coding rate and reconstruction distortion, while the rate-distortion-perception (RDP) framework introduces a divergence-based measure of perceptual quality as a modeling principle, leaving its theoretical origin unclear. In this paper, motivated by a synonymity-based semantic information perspective, we reformulate perceptual reconstruction as recovering any admissible sample within an ideal synonymous set (synset) associated with the source, rather than the source sample itself, and establish a synonymous source coding architecture...
| Authors | Zijian Liang, Kai Niu, Changshuo Wang et al. |
|---|---|
| Primary category | cs.IT |
| Published | 16 April 2026 |
| Last updated at source | 29 June 2026 |
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