| Keyword search (4,163 papers available) | ![]() |
"dual-tree complex wavelet transform (DTC" Keyword-tagged Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Invariant Pattern Recognition with Log-Polar Transform and Dual-Tree Complex Wavelet-Fourier Features | Chen G; Krzyzak A; | 37112182 ENCS |
| Title: | Invariant Pattern Recognition with Log-Polar Transform and Dual-Tree Complex Wavelet-Fourier Features | ||||
| Authors: | Chen G, Krzyzak A | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/37112182/ | ||||
| DOI: | 10.3390/s23083842 | ||||
| Publication: | Sensors (Basel, Switzerland) | ||||
| Keywords: | discrete wavelet transform (DWT); dual-tree complex wavelet transform (DTCWT); fast Fourier transform (FFT); log-polar transform; pattern recognition; | ||||
| PMID: | 37112182 | Category: | Date Added: | 2023-04-28 | |
| Dept Affiliation: |
ENCS
1 Department of Computer Science and Software Engineering, Concordia University, Montreal, QC H3G 1M8, Canada. |
||||
Description: |
In this paper, we propose a novel method for 2D pattern recognition by extracting features with the log-polar transform, the dual-tree complex wavelet transform (DTCWT), and the 2D fast Fourier transform (FFT2). Our new method is invariant to translation, rotation, and scaling of the input 2D pattern images in a multiresolution way, which is very important for invariant pattern recognition. We know that very low-resolution sub-bands lose important features in the pattern images, and very high-resolution sub-bands contain significant amounts of noise. Therefore, intermediate-resolution sub-bands are good for invariant pattern recognition. Experiments on one printed Chinese character dataset and one 2D aircraft dataset show that our new method is better than two existing methods for a combination of rotation angles, scaling factors, and different noise levels in the input pattern images in most testing cases. |



