SymKL: A Unified Representation-Space Measure of Signal Degradation
arXiv:2610.39403v1 Announce Type: cross Abstract: Quantifying degradation between a pristine signal and its degraded observation is fundamental to signal processing, yet existing full-reference measures are inherently modality-specific. We introduce SymKL, a unified full-reference degradation measure based on implicit neural representations (INRs). An INR is fitted once to the pristine reference and characterized by its diagonal Fisher information, which captures the local information geometry…