Lossy Compression With Universal Distortion
نویسندگان
چکیده
We consider a novel variant of $d$ -semifaithful lossy coding in which the distortion measure is revealed only to encoder and at run-time, as well an extension it constraint also run-time. Two forms rate redundancy are used analyze performance, achievability results both pointwise minimax nature demonstrated. The first scheme uses ideas from VC dimension growth functions, second appropriate quantization space measures, third relies on random argument.
منابع مشابه
Pointwise redundancy in lossy data compression and universal lossy data compression
We characterize the achievable pointwise redundancy rates for lossy data compression at a fixed distortion level. “Pointwise redundancy” refers to the difference between the description length achieved by an nth-order block code and the optimal nR(D) bits. For memoryless sources, we show that the best achievable redundancy rate is of order O( √ n) in probability. This follows from a second-orde...
متن کاملLossy Compression of Quality Values via Rate Distortion Theory
Motivation: Next Generation Sequencing technologies revolutionized many fields in biology by enabling the fast and cheap sequencing of large amounts of genomic data. The ever increasing sequencing capacities enabled by current sequencing machines hold a lot of promise as for the future applications of these technologies, but also create increasing computational challenges related to the analysi...
متن کاملLossy Image Compression
Representing image files as simple arrays of pixels is generally very inefficient in terms of memory. Storage space and network bandwidth is limited so it is necessary to compress image files. There are many methods that achieve very high compression ratios by allowing the data to be corrupted in ways that are not easily perceivable to the human eye. A new concept is described, combining fracta...
متن کاملNovel Lossy Compression Algorithms with Stacked Autoencoders
Lossy compression is a strategy to reduce the size of data while maintaining the majority of its useful or meaningful information. Though some data is lost in the compression process, lossy compression algorithms try to remove data that is unlikely to be considered important by a human consumer. Given this goal, today’s lossy compression techniques are carefully designed to model human percepti...
متن کاملTopologically Controlled Lossy Compression
This paper presents a new algorithm for the lossy compression of scalar data defined on 2D or 3D regular grids, with topological control. Certain techniques allow users to control the pointwise error induced by the compression. However, in many scenarios it is desirable to control in a similar way the preservation of higher-level notions, such as topological features , in order to provide guara...
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: 2023
ISSN: ['0018-9448', '1557-9654']
DOI: https://doi.org/10.1109/tit.2023.3247601