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DTIC ADA242822: Principles of Interpolator Design and Evaluation |
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by Defense Technical Information Center |
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It is shown that an error spectrum can be used to |
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describe the performance of any convolutional |
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interpolator operating on equally spaced points from an |
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over sampled image. The error spectrum is linear in the |
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image power spectrum and in an error factor that depends |
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on only the interpolator and the distance from the sample |
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points. The same form is shown to describe the |
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interpolation of undersampled data, in an average sense. |
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Simple forms are given for the error factor in either |
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Fourier or real space, and standard interpolators are |
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evaluated with them. Optimal interpolators are derived |
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for various model image spectra: constant, Lorentzian, |
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power law, and Gaussian. Practical methods of |
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interpolator design are devised for use with image |
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spectra that are known only partially or are not easily |
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characterized analytically. |
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Date Published: 2018-03-04 01:15:04 |
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Identifier: DTIC_ADA242822 |
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Item Size: 25983106 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Schaum, Alan; NAVAL RES... |
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