Rokuya Ishii

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IIR digital filters are generally designed from an analog low-pass filter by any combination of the bilinear transformation, frequency transformation for analog filters and that for IIR digital filters. But the direct application of these transformations yields a complicated formula of the target transfer function, which has to be reduced by hand(More)
Image restoration is an important topic in the area of image processing. Standard normalization methods are well known in which this problem is treated as the problem of optimization of the evaluation function. In this paper, we treat images degraded by a given shift-invariant blur function and additive Gaussian noise, and a method of image restoration is(More)
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