IEEE Transactions on Computers
A Semicausal Model for Recursive Filtering of Two-Dimensional Images
IEEE Transactions on Computers
Fast Suboptimal Wiener Filtering of Markov Sequences
IEEE Transactions on Computers
IEEE Transactions on Computers
Fast Computational Techniques for Pseudoinverse and Wiener Image Restoration
IEEE Transactions on Computers
Image Data Processing by Hadamard-Haar Transform
IEEE Transactions on Computers
Sequential Estimation Technique for Enhancement of Noisy Images
IEEE Transactions on Computers
An Operator Factorization Method for Restoration of Blurred Images
IEEE Transactions on Computers
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The classical signal processing technique known as Wiener filtering has been extended to the processing of one-and two-dimensional discrete data by digital operations with emphasis on reduction of the computational requirements. In the generalized Wiener filtering process a unitary transformation, such as the discrete Fourier, Hadamard, or Karhunen-Loéve transform is performed on the data that is assumed to be composed of additive signal and noise components. The transformed data is then modified by a filter function, and the inverse transformation is performed to obtain the discrete system output. The filter function is chosen to provide the best mean square estimate of the signal portion of the input data.