Techniques are disclosed relating to compression of pixel data using different quantization for different regions of a block of pixels being compressed. In some embodiments, compression circuitry is configured to determine, for multiple components included in pixels of the block of pixels being ...
VLDB2015的论文《A time-series compression technique and its application to the smart grid》描述了一种分片回归的技术(Piecewise regression techniques),其将时间序列划分为固定长度或可变长度的区间,并使用回归函数描述它们。 这种算法采用三种回归函数,分别为: 1. constant functions (polynomials of degree zero)...
We show that our novel approach is able to outperform state-of-the-art lossy compression techniques in terms of rate-distortion performance. On different ... A Meyer,N Genser,A Kaup 被引量: 0发表: 2023年 Secure Lossy Transmission over Wiretap Channels with Side Information and State Informatio...
This article summarizes the theory and main techniques used in lossy data compression. Topics covered include lossy information theory rate-distortion theory, scalar and vector quantization, predictior-based coding and linear transformations, including KLT, DCT, and subband transformations. Also the JPEG...
Data compression, the process of reducing the amount of data needed for the storage or transmission of a given piece of information, typically by the use of encoding techniques. Compression predates digital technology, having been used in Morse Code, whi
If you want to process a large amount data with Pandas, there are various techniques you can use to reduce memory usage without changing your data. But what if that isn’t enough? What if you still need to reduce memory usage? Another technique you can try is lossy compression: drop ...
IntroductionLossy compression techniques are ubiquitous in the modern-day digital world, and are regularly used for communicatingand storing images, video and audio. In recent years, lossycompression is seeing a surge of research, due in part to theadvancements in deep learning and their application...
Aspects such as integrity of data, documentation of changes and digital signature have been discussed in the security section. Validity of medical images is a concern if suboptimal viewing applications such as regular desktop PCs are used for diagnostic review or if lossy compression techniques are ...
Near-lossless compression of digital terrain elevation data In critical applications of image compression that are sensitive to information loss, lossless compression techniques are usually employed. The compression... RV Panchagnula,WA Pearlman - 《Proc Spie》 被引量: 10发表: 2004年 Slope preserving...
These two techniques are used collectively to introduce a new technique which can be used in steganography. This technique is applied on images which employ lossless compression because hidden data can be lost if lossy compression format ... C Singh,G Deep,S Haryana 被引量: 10发表: 2013年 A...