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Digital watermarking technique is a leading international research field in recent years. Though watermarking algorithms based on scalar wavelet transforms have become a hot-discussed research aspect and fruitful achievements have been obtained. but the ones based on multi-wavelet transforms have appeared few. Multi-wavelet has symmetric, orthogonality and compact support at the same time. They are...
Based on the theory of multiwavelet analysis and fractal dimensions, a novel adaptive image interpolation algorithm is proposed. By one level multiwavelet decomposition, the image is transformed into four low frequency bands and twelve high frequency bands. Using the fractal dimensions of high frequency bands, every band of two level multiwavelet transform for high-resolution image is obtained adaptively...
Compared to the scalar wavelet, the multiwavelet has the properties of orthogonality, short support, real symmetry, high order vanishing moment and so on, however, it does not work well in image denoising techniques, primarily due to not making full use of the characteristic property of images in the multiwavelet domain. By transforming the noisy images to the multiwavelet domain, and applying a special...
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