wavelet compression


wavelet compression
вейвлет-сжатие, "коротковолновое" сжатие, сжатие [данных изображений] методом волновой модуляции
wavelets - математические выражения, описывающие изображения как последовательность импульсоидов (волнофрагментов); метод сжатия видеоизображения, похожий на алгоритм JPEG, за исключением того, что обрабатываются слегка перекрывающиеся блоки изображения, чтобы при воспроизведении избежать появления заметных глазу блочных артефактов (структуры), характерных для сжатия методом дискретного косинусоидального преобразования (DCT)

Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. . 1998-2007.

Смотреть что такое "wavelet compression" в других словарях:

  • Wavelet compression — is a form of data compression well suited for image compression (sometimes also video compression and audio compression). The goal is to store image data in as little space as possible in a file. Wavelet compression can be either lossless or… …   Wikipedia

  • Wavelet transform — An example of the 2D discrete wavelet transform that is used in JPEG2000. In mathematics, a wavelet series is a representation of a square integrable (real or complex valued) function by a certain orthonormal series generated by a wavelet …   Wikipedia

  • Wavelet — A wavelet is a mathematical function used to divide a given function or continuous time signal into different frequency components and study each component with a resolution that matches its scale. A wavelet transform is the representation of a… …   Wikipedia

  • Wavelet packet decomposition — (WPD) (sometimes known as just wavelet packets) is a wavelet transform where the signal is passed through more filters than the DWT. In the DWT, each level is calculated by passing the previous approximation coefficients through a high and low… …   Wikipedia

  • Compression Wavelet — Compression par ondelettes La Compression par ondelettes est une technologie de compression de données, bien adaptée à la compression images. Sommaire 1 Introduction aux ondelettes 2 Algorithme ondelettes 3 Transformée ondelettes …   Wikipédia en Français

  • Wavelet Scalar Quantization — The Wavelet Scalar Quantization algorithm (WSQ) is a compression algorithm used for gray scale fingerprint images. It is based on wavelet theory and has become a standard for the exchange and storage of fingerprint images. WSQ was developed by… …   Wikipedia

  • Wavelet series — In mathematics, a wavelet series is a representation of a square integrable (real or complex valued) function by a certain orthonormal series generated by a wavelet. This article provides a formal, mathematical definition of an orthonormal… …   Wikipedia

  • Compression artifact — Original image, with good color grade Loss of edge clarity and tone fuzziness in heavy JPEG compression A compression ar …   Wikipedia

  • Wavelet — Ondelette En mathématiques, une ondelette est une fonction de carré sommable sur l espace euclidien , le plus souvent oscillante et de moyenne nulle, choisie comme outil d analyse et de reconstruction multi échelle. Les ondelettes se rencontrent… …   Wikipédia en Français

  • compression — F/A/V the action of the air molecules moving closer together permitting audible sound. TV An encoding process that reduces the digital data in a video frame, typically from nearly one megabyte to 300 kilobytes or less. This is accomplished by… …   Audio and video glossary

  • Data compression — Source coding redirects here. For the term in computer programming, see Source code. In computer science and information theory, data compression, source coding or bit rate reduction is the process of encoding information using fewer bits than… …   Wikipedia

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