Quasi-Newton approach to nonnegative image restorations (Q1587287)
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scientific article; zbMATH DE number 1533002
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Quasi-Newton approach to nonnegative image restorations |
scientific article; zbMATH DE number 1533002 |
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Quasi-Newton approach to nonnegative image restorations (English)
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20 November 2000
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Efficient implementations for three nonnegatively constrained image restoration schemes are introduced: constrained least squares, maximum likelihood, and maximum entropy. With a certain parametrization and using a quasi-Newton method, these algorithms become very similar. Numerical experiments show that the new approach is superior to the popular expectation maximizing method with regard to both accuracy and efficiency.
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nonnegative image restorations
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conjugate gradient method
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numerical experiments
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constrained least squares
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maximum likelihood
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maximum entropy
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quasi-Newton method
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algorithms
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0.9248892
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0.9056568
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0.8974345
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0.8966965
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0.89503855
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0.8921554
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0.88958347
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0.88725245
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