Arbeiten des Institutes für Thermodynamik und Verbrennungskraftmaschinen an der Technischen und Montanistischen Hochschule Graz-Leoben in Graz

Ohne Zusammenfassung     

Computer Processing of Radiographic Images with the Finite Fourier Transform

This paper considers the optimal design and implementation of two-dimensional, nonrecursive digital filters for use in the processing of radiographic images. A stochastic system model is used for the image-forming process, and the filter is designed to a mean-square error criterion. Both the design algorithm and filter realization are mechanized by using a Fast Fourier Transform code, thereby ensuring the computational efficiency of the method.     

A note on generating certainty equivalent controls

It is suggested that in stochastic control problems where there is uncertainty about the current state the correct estimate of the state to be used for generating certainty equivalent controls is not always the mean value of the probability distribution for the state.