Results 11 to 20 of about 1,228 (87)

Distributed Vector Quantization Based on Kullback-Leibler Divergence

open access: yesEntropy, 2015
The goal of vector quantization is to use a few reproduction vectors to represent original vectors/data while maintaining the necessary fidelity of the data.
Pengcheng Shen   +2 more
doaj   +1 more source

A novel semi-fragile forensic watermarking scheme for remote sensing images [PDF]

open access: yes, 2011
Peer-reviewedA semi-fragile watermarking scheme for multiple band images is presented. We propose to embed a mark into remote sensing images applying a tree structured vector quantization approach to the pixel signatures, instead of processing each band ...
Aiazzi B.   +24 more
core   +1 more source

An improvement on codebook search for vector quantization [PDF]

open access: yes, 1994
Presents a simple but effective algorithm to speed up the codebook search in a vector quantization scheme when a MSE criterion is used. A considerable reduction in the number of operations is achieved.
Huguet, J, Torres Urgell, Lluís
core   +2 more sources

Application of Parzen Window estimation for incipient fault diagnosis in power transformers

open access: yesHigh Voltage, Volume 3, Issue 4, Page 303-309, December 2018., 2018
Accurate faults diagnosis in power transformers is important for utilities to schedule maintenance and minimises the operation cost. Dissolved gas analysis (DGA) is one of the proven and widely accepted tools for incipient fault diagnosis in power transformers.
Md Mominul Islam   +2 more
wiley   +1 more source

Steganography Algorithm Based on the Nonlocal Maximum Likelihood Noise Estimation for Mobile Applications

open access: yesSecurity and Communication Networks, Volume 2018, Issue 1, 2018., 2018
In recent years, thanks to the use of Internet services, daily activities used to imply movement became more accessible to any user. As a result of such interconnection, now millions of people from different countries are able to communicate among themselves through the Internet, generating a great flow of data and classified information.
Blanca Esther Carvajal-Gámez   +2 more
wiley   +1 more source

Text-Independent Speaker Verification Based on Information Theoretic Learning [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2011
In this paper VQ (Vector Quantization) based on information theoretic learning is investigated for the task of text-independent speaker verification. A novel VQ method based on the IT (Information Theoretic) principles is used for the task of speaker ...
Sheeraz Memon   +2 more
doaj  

Distributed Vector Quantization over Sensor Network

open access: yesInternational Journal of Distributed Sensor Networks, 2014
A vector quantizer is a system for encoding the original data to reduce the bits needed for communication and storage saving while maintaining the necessary fidelity of the data.
Chunguang Li, Yiliang Luo
doaj   +1 more source

Weighted universal image compression [PDF]

open access: yes, 1999
We describe a general coding strategy leading to a family of universal image compression systems designed to give good performance in applications where the statistics of the source to be compressed are not available at design time or vary over time or ...
Chou, Philip A.   +2 more
core   +1 more source

Human Depth Sensors‐Based Activity Recognition Using Spatiotemporal Features and Hidden Markov Model for Smart Environments

open access: yesJournal of Computer Networks and Communications, Volume 2016, Issue 1, 2016., 2016
Nowadays, advancements in depth imaging technologies have made human activity recognition (HAR) reliable without attaching optical markers or any other motion sensors to human body parts. This study presents a depth imaging‐based HAR system to monitor and recognize human activities.
Ahmad Jalal   +3 more
wiley   +1 more source

A Hybrid Vector Quantization Combining a Tree Structure and a Voronoi Diagram

open access: yesMathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
Multimedia data is a popular communication medium, but requires substantial storage space and network bandwidth. Vector quantization (VQ) is suitable for multimedia data applications because of its simple architecture, fast decoding ability, and high compression rate.
Yeou-Jiunn Chen   +3 more
wiley   +1 more source

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