The Rate-Distortion Risk in Estimation From Compressed Data
نویسندگان
چکیده
منابع مشابه
Quantization Distortion in Block Transform-Compressed Data
Block transform-compression techniques such as JPEG operate by systematically decomposing image data into segments or blocks that are transformed, quantized, and encoded independently. Characteristic quantization noise patterns that include artiicial discontinu-ities between data blocks result from such image compression schemes. Here we present a simple model of the quantization noise that res...
متن کاملMinimum Distortion Data Hiding for Compressed Images
ACKNOWLEDGEMENTS Many people have contributed to this work. It is impossible to name all of them. I am thankful to everyone who has been with me during this incredible journey. I would like to thank my advisor Nikil Jayant first. He has been a role model to all of us. He has always provided support whenever we need, and never stopped believing in what we can do. His brilliance, attention and po...
متن کاملEstimation of the Rate-Distortion Function
Motivated by questions in lossy data compression and by theoretical considerations, this paper examines the problem of estimating the rate-distortion function of an unknown (not necessarily discretevalued) source from empirical data. The main focus is the behavior of the so-called “plug-in” estimator, which is simply the rate-distortion function of the empirical distribution of the observed dat...
متن کاملEstimation of Distortion Risk Measures
The concept of coherent risk measure was introduced in Artzner et al. (1999). They listed some properties, called axioms of ‘coherence’, that any good risk measure should possess, and studied the (non-)coherence of widely-used risk measure such as Value-atRisk (VaR) and expected shortfall (also known as tail conditional expectation or tail VaR). Kusuoka (2001) introduced two additional axioms c...
متن کاملRate-distortion optimized streaming of compressed light fields
We propose a framework for the streaming of light fields over a lossy error-prone packet network. This system is optimized for the end-user according to a rate-distortion criterion. We build upon recent rate-distortion optimized streaming work for audio and video data. We extend this work to light field image data by introducing view-dependent distortion, multiple playout deadlines, and stateba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2021
ISSN: 0018-9448,1557-9654
DOI: 10.1109/tit.2021.3068981