Results 41 to 50 of about 1,866,673 (365)
Vektorių kvantavimo metodų ir daugiamačių skalių junginys daugiamačiams duomenims vizualizuoti
Informacijos Mokslai, 2009 Darbe pateikiama lyginamoji dviejų vektorių kvantavimo metodų (saviorganizuojančių neuroninių tinklų ir neuroninių dujų) analizė. Neuronai nugalėtojai, kurie gaunami vektorių kvantavimo metodais, yra vizualizuojami daugiamačių skalių metodu.
Alma Molytė, Olga Kurasova
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Intrinsic Stationarity for Vector Quantization: Foundation of Dual Quantization [PDF]
SIAM Journal on Numerical Analysis, 2012 We develop a new approach to vector quantization, which guarantees an intrinsic stationarity property that also holds, in contrast to regular quantization, for non-optimal quantization grids. This goal is achieved by replacing the usual nearest neighbor projection operator for Voronoi quantization by a random splitting operator, which maps the random ...
Pagès, Gilles, Wilbertz, Benedikt
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Stochastic vector quantization of images
Signal Processing, 1997 One of the most important steps in the vector quantization of images is the design of the codebook. The codebook is generally designed using the LBG algorithm, that is in essence a clustering algorithm which uses a large training set of empirical data that is statistically representative of the image to be quantized.
Torres Urgell, Lluís +2 more
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Steganography based on Vector Quantization Technique [PDF]
Al-Rafidain Journal of Computer Sciences and Mathematics, 2013 The present research was aimed to implement a new Steganographic algorithm for Images in Vector Quantization (VQ) compressed domain, since the compressed image considers a secure cover for data to be embedded to avoid attention of unauthorized persons ...
Ansam Osamah, Ahmed Nori
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Applied Sciences, 2023 Multiple digital watermarking is an important and challenging task in geographic information science and data security. Vector geographic data are a basic data format for digital geographic data storage, and the security protection of these data involves
Yingying Wang +2 more
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Image Vector Quantization codec indexes filtering [PDF]
Serbian Journal of Electrical Engineering, 2012 Vector Quantisation (VQ) is an efficient coding algorithm that has been widely used in the field of video and image coding, due to its fast decoding efficiency.
Lakhdar Moulay Abdelmounaim +4 more
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, 2023 A newer version of this manuscript was archived under 2312 ...
Nguyen, David D. +3 more
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An improvement on codebook search for vector quantization [PDF]
, 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
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Speaker Authentication Using Vector Quantization
مجلة بغداد للعلوم, 2009 In this paper, the role of the vector quantization in the speaker authentication system was studied. Vector quantization based speaker authentication system was considered in two phases; training and testing.
Bushra Q. Al-Abudi, Mohammed S. Mahdi
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Generalized residual vector quantization for large scale data
, 2016 Vector quantization is an essential tool for tasks involving large scale data, for example, large scale similarity search, which is crucial for content-based information retrieval and analysis.
Liu, Shicong, Lu, Hongtao, Shao, Junru
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