Image analysis – Histogram processing – For setting a threshold
Patent
1984-07-17
1987-11-24
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
358163, 358283, 371 30, 382 57, G06K 940
Patent
active
047093951
ABSTRACT:
A method and apparatus for minimizing errors in digital processing of electrical signals whereby a digital input signal is divided into a digital useful signal having a lower resolution than the input signal and into a digital error signal having lower resolution than the input signal. A deviation of the useful signal is reproduced from the input signal and a check is performed to see whether the sum error of a plurality of successive useful signal values crosses a prescribed upper or lower threshold. When a threshold is crossed, an error value of the useful signal which comes closest to this threshold is identified and the useful signal and the error signal of this signal value are corrected such that the sum error no longer crosses the threshold.
REFERENCES:
patent: 4150400 (1979-04-01), Wong
patent: 4196452 (1980-04-01), Warren et al.
patent: 4366507 (1982-12-01), Mori
patent: 4482923 (1984-11-01), Fischer et al.
patent: 4485397 (1984-11-01), Scheuter et al.
patent: 4586082 (1986-04-01), Wilkinson
"MECCA", Habilitation Dissertation by Peter Stucki at Faculty of Jurisprudence and Political Science of the University of Zurich, 1981, pp. 14 and 15.
Fischer Gerhard
Scheuter Karl R.
Dr.-Ing. Rudolf Hell GmbH
Moore David K.
Todd Jacqueline
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