Image analysis – Image enhancement or restoration – Image filter
Patent
1993-11-24
2000-05-02
Vu, Kim Yen
Image analysis
Image enhancement or restoration
Image filter
382264, 358464, 358463, H04N 1409
Patent
active
060582200
ABSTRACT:
A device for scanning an X-ray image where a previously locally uniformly charged photoconductor (1) is discharged in dependence on the local intensity, utilizing several electrometer probes which are arranged in a row and which line-wise scan the charge pattern of the photoconductor (1) which is successively displaced in the scanning direction, extending perpendicular to the line direction, the probes supplying, for each pixel, an image value which corresponds to a discharge at the relevant pixel. In order to eliminate streaky artefacts, the image values are applied to an analog-to-digital converter (5), the converted values being stored in an image memory (6), there being provided a signal processor (7) which subjects the image values of neighboring pixels in an image line to a low-pass filter function and which subjects the image values of pixels neighboring one another in the scanning direction to a high-pass filter function.
REFERENCES:
patent: 4677461 (1987-06-01), Mizutani et al.
patent: 4706113 (1987-11-01), Ito et al.
patent: 4752944 (1988-06-01), Conrads et al.
patent: 4789890 (1988-12-01), Itoh et al.
patent: 4825297 (1989-04-01), Fuchsberger et al.
patent: 4908697 (1990-03-01), Tsinberg et al.
patent: 4912569 (1990-03-01), Petilli
patent: 4939759 (1990-07-01), Rupp et al.
patent: 4954885 (1990-09-01), Ito et al.
patent: 4999701 (1991-03-01), Cavallerano et al.
patent: 5003618 (1991-03-01), Meno
IEEE International Conference on Acoustics, Speech, and Signal Processing, Proceedings, Mar. 26-29, 1985 pp. 684-687, Tao et al.
Hillen Walter
Rupp Stephan
Schiebel Ulrich
Renfrew Dwight H.
U.S. Philips Corporation
Vu Kim Yen
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