ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

An iterative method for restoring noisy blurred images (1984)

Katsaggelos, A. K. ; Biemond, J. ; Mersereau, R. M. ; [et al.]

Springer

Circuits, systems and signal processing 3 (1984), S. 139-160

add to mindlist on the mindlist

Details

ISSN: 1531-5878

Source: Springer Online Journal Archives 1860-2000

Topics: Electrical Engineering, Measurement and Control Technology

Notes: Abstract This paper introduces a new iterative image restoration method which is capable of restoring noisy blurred images by incorporatinga priori knowledge about the image and noise statistics into the iterative procedure. The iteration equation consists of a prediction part which is based on a noncausal image model description and an innovation part which is weighted by a gain factor. The gain is computed using a linear MSE optimization procedure and is updated at each step of the iteration. The convergence of the algorithm, the resolution of some convergence difficulties by using “reblurring,” and methods for the introduction of physical constraints will be discussed. This image restoration scheme can be interpreted as an iterative procedure with a statistical constraint on the image data. Results of several experiments with noisy blurred data are presented to demonstrate the feasibility of this approach.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01599212

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Characterization of normal human cells by pyrolysis gas chromatography mass spectrometry (1979)

Reiner, E. ; Abbey, L. E. ; Moran, T. F. ; [et al.]

Chichester : Wiley-Blackwell

Biological Mass Spectrometry 6 (1979), S. 491-498

add to mindlist on the mindlist

Details

ISSN: 0306-042X

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Differentiation of normal human cells has been accomplished by pyrolysis gas chromatography mass spectrometry. Normal cells from human kidney, spleen, liver and brain tissues have been pyrolyzed and the products chromatographically separated and characterized by mass spectrometry. Molecular pyrolysis products giving rise to the characteristic pyro-mass chromatograms include, but are not limited to, alkenes, alkanes, nitriles and various ring compounds. Single ion mass chromatograms as well as multiple ion mass chromatograms have been used to explore the characteristic differences between various tissue materials. A dynamic computer methodology for comparing pyro-mass chromatograms has been developed for use in automatic identification and classification of the human cellular material.

Additional Material: 9 Ill.