Multivariate tight wavelet frames with few generators and high vanishing moments
Abstract
Tight wavelet frames (TWFs) are computationally and theoretically attractive, but most existing multivariate constructions have various drawbacks, including low vanishing moments for the wavelets, or a large number of wavelet masks. We further develop existing work combining sums of squares representations with TWF construction, and present a new and general method for constructing such frames. Focusing on the case of box splines, we also demonstrate how the flexibility of our approach can lead to TWFs with high numbers of vanishing moments for all of the wavelet masks, while still having few highpass masks: in fact, we match the best known upper bound on the number of highpass masks for general box spline TWF constructions, while typically achieving much better vanishing moments for all of the wavelet masks, proving a nontrivial lower bound on this quantity.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 18, 2022
- Source ID
- 10.1142/s0219691322500096
Entities
People
- Kasso A. Okoudjou
- Youngmi Hur
- Zachary Lubberts
Organizations
- Army Research Office
- Johns Hopkins University
- National Research Foundation of Korea
- National Science Foundation
- Simons Foundation
- Tufts University
- Yonsei University