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High resolution two-dimensional minimum free energy AR spectral estimation |
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| Authors: | Paul Kiernan |
| Affiliation: | (1) Department of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin st., Dublin 8;(2) School of Computer Applications, Dublin City University, Dublin 9, Ireland |
| Abstract: | We extend the minimum free energy (MFE) parameter estimation method to 2-D fields. This 2-D MFE method may be used to determine autoregressive (AR) model parameters for spectral estimation of 2-D fields. It may also be used to provide AR models for texture synthesis. The performance of the technique for closely spaced sinusoids in white noise is demonstrated by numerical example. Better results can be achieved than with the multidimensional Levinson algorithm. |
| Keywords: | Spectral estimation 2-D causal models 2-D AR models minimum free energy parameter estimation field synthesis signal processing temperature MFE models image modeling texture synthesis |
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