Image denoising based on the edge-process model
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Scalable video coding with interlayer signal decorrelation techniques
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A Contourlet-Based Method for Wavelet Neural Network Automatic Target Recognition
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Design of directional filter banks with arbitrary number of subbands
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Contourlet detection and feature extraction for automatic target recognition
SMC'09 Proceedings of the 2009 IEEE international conference on Systems, Man and Cybernetics
Enhancing robustness of digital image watermarks using contourlet transform
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Contourlet-based image watermarking using optimum detector in a noisy environment
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LMMSE-based image denoising in nonsubsampled contourlet transform domain
ICISP'10 Proceedings of the 4th international conference on Image and signal processing
Visual information representation using embedded block with significance selecting model
ICIC'06 Proceedings of the 2006 international conference on Intelligent computing: Part II
Effortless critical representation of laplacian pyramid
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A contourlet-based image watermarking scheme with high resistance to removal and geometrical attacks
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Image inpainting with nonsubsampled contourlet transform
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A highly robust two-stage Contourlet-based digital image watermarking method
Image Communication
Hi-index | 35.69 |
Burt and Adelson (1983) introduced the Laplacian pyramid (LP) as a multiresolution representation for images. We study the LP using the frame theory, and this reveals that the usual reconstruction is suboptimal. We show that the LP with orthogonal filters is a tight frame, and thus, the optimal linear reconstruction using the dual frame operator has a simple structure that is symmetric with the forward transform. In more general cases, we propose an efficient filterbank (FB) for the reconstruction of the LP using projection that leads to a proved improvement over the usual method in the presence of noise. Setting up the LP as an oversampled FB, we offer a complete parameterization of all synthesis FBs that provide perfect reconstruction for the LP. Finally, we consider the situation where the LP scheme is iterated and derive the continuous-domain frames associated with the LP.