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Image zooming by wavelets
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DOI：10.1142/S0218348X00000342.png)
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摘要
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Enlargement and reduction of images are often required in image processing. Popular methods for re-sizing are standard interpolation methods. Recently, wavelets and fractal-based methods are developed for re-sizing. In this paper, wavelet zooming algorithm based on pyramid algorithm for wavelet transformation is explained. Also performance analysis of wavelet-based zooming method is investigated. We find that wavelet zooming with enhanced coefficients gives better visual quality. The objective error analysis also agrees with this. Wavelet zooming has also been performed block-wise. A significant drawback of the method is that the scaling factor should be power of 2.
Keyword:
REPRESENTATION
INTERPOLATION
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2.9
论文数:
2.8K
被引数:
5.6K
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