Reducing Boundary Error in Wavelet Image Compression

Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Reducing Boundary Error in Wavelet Image Compression
Original language description
Originally, the discrete wavelet transform was designed for an infinite input data. Applying discrete wavelet transform directly to images in lossy wavelet image compression leads to large errors and artifacts at the tile and the image boundaries of thereconstructed image. To reduce boundary errors and artifacts the image is usually first extended and the discrete wavelet transform is applied to the extended image. An alternative approach consists of using directly the discrete wavelet transform with special filters near the boundary. In our contribution, we show that the tiling artifacts are significantly reduced and that the error of the compression is smaller with the discrete wavelet transform with recently derived boundary filters than with othermethods using an extension of an image.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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