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- W1020714895 abstract "AbstractHere we propose a method to zoom a given image in wavelet domain. We use ideas from multiresolution analysis and zerotree philosophy for image zooming. Wavelet coefficient decay across scales is calculated to estimate wavelet coefficients at finer level. Since this amounts to adding high frequency component, proposed method does not suffer from smoothing effects. Zoomed images are (a) sharper compared to linear interpolation, and (b) less blocky compared to pixel replication. Performance is measured by calculating signal to noise ratio (SNR), and the proposed method gives much better SNR compared to other methods.KeywordsWaveletsMultiresolutionZoomingZerotree" @default.
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- W1020714895 date "2005-12-22" @default.
- W1020714895 modified "2023-10-12" @default.
- W1020714895 title "Image Zooming: Use of Wavelets" @default.
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- W1020714895 doi "https://doi.org/10.1007/0-306-47004-7_2" @default.
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