Feb 20, 2018
Complex nonseparable oversampled lapped transform for sparse representation of millimeter wave radar image
Proceedings - International Conference on Image Processing, ICIP
- ,
- ,
- ,
- Volume
- 2017-
- Number
- First page
- 2716
- Last page
- 2720
- Language
- English
- Publishing type
- Research paper (international conference proceedings)
- DOI
- 10.1109/ICIP.2017.8296776
- Publisher
- IEEE Computer Society
This work generalizes an existing framework of nonseparable oversampled lapped transforms (NSOLTs) to effectively represent complex-valued images. The original NSOLTs are lattice-structure-based redundant transforms, which satisfy the linear-phase, compact-supported and real-valued property. The lattice structure is able to constitute a Parseval tight frame with rational redundancy and to generate a dictionary with directional atomic images. In this study, a generalized structure of NSOLTs is proposed to cover complex-valued atomic images. The novel transform is referred to as a complex NSOLT (CNSOLT). The effectiveness of the structure is verified by evaluating the sparse approximation performance using the iterative hard thresholding (IHT) algorithm for a millimeter wave radar image.
- Link information
- ID information
-
- DOI : 10.1109/ICIP.2017.8296776
- ISSN : 1522-4880
- SCOPUS ID : 85045345820