Spread spectrum digital screening

Details Spread spectrum digital screening Spread spectrum digital screening

1995-03-27

1997-11-18

Bost, Dwayne

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395109, 358457, 358465, 358466, 358458, 358456, 358536, G06K 1500, H04N 140

Patent

active

056896239

ABSTRACT:
A spread spectrum digital screening mask and a method and system for digital screening a continuous tone image with the spread spectrum digital screening mask. The mask is characterized in the frequency domain by a function in magnitude independent of angle within a band of frequencies between a minimum frequency and a maximum frequency. The mask may be further characterized by its thresholded binary planes at each of a plurality of predetermined threshold values. The binary planes are characterized in frequency domain by magnitudes primarily distributed within the band of frequencies. For each binary plane, the number of pixels having one of the binary values divided by the total number of pixels in the binary plane equals a fraction determined by the predetermined threshold value of the binary plane divided by the maximum threshold value.

REFERENCES:
patent: 4413286 (1983-11-01), Boston
patent: 4425642 (1984-01-01), Moses et al.
patent: 4651228 (1987-03-01), Koch
patent: 4692879 (1987-09-01), Ikuta
patent: 4698691 (1987-10-01), Suzuki et al.
patent: 4736254 (1988-04-01), Kotera et al.
patent: 4800442 (1989-01-01), Riseman et al.
patent: 4800443 (1989-01-01), Crinon et al.
patent: 4819075 (1989-04-01), Imaide et al.
patent: 4821109 (1989-04-01), Roe
patent: 4825298 (1989-04-01), Ikuta et al.
patent: 4912569 (1990-03-01), Petilli
patent: 4920501 (1990-04-01), Sullivan et al.
patent: 4941185 (1990-07-01), Reed
patent: 5070413 (1991-12-01), Sullivan et al.
patent: 5079721 (1992-01-01), Gershony
patent: 5111310 (1992-05-01), Parker et al.
patent: 5150225 (1992-09-01), Kreitman
patent: 5198910 (1993-03-01), Ng et al.
patent: 5214517 (1993-05-01), Sullivan et al.
patent: 5220432 (1993-06-01), Roe et al.
patent: 5274473 (1993-12-01), Kidd et al.
patent: 5283140 (1994-02-01), Netz et al.
patent: 5309526 (1994-05-01), Pappas et al.
patent: 5315409 (1994-05-01), Matsumura et al.
patent: 5323247 (1994-06-01), Parker et al.
patent: 5467196 (1995-11-01), Fukushima et al.
"Power Spectrum Shaping of Halftone Patterns and Its Effect on Visual Appearance", 1992 IEEE International Conference on Acoustics, Speech and Signal Processing, 23-26 Mar. 1992.
"Turning Blue Sound Into Blue Noise", 1992 IEEE Internal Conference on Acoustics, Speech and Signal Processing, 23-26 Mar. 1992.
"Electronically Generated Halftone Pictures", R. J. Klensch et al., RCA Review, vol. 31, No. 3, Sep. 1980.
"Digital Electronics Meets Its Match", Anastasios P. Goutzoulis et al., IEEE Spectrum, Aug. 1988.
"Principles of Color Reproduction", J.A.C. Yule, 1967.
"Fourier Spectrum of Halftone Images", D. Kermisch et al., Journal of the Optical Society of America, vol. 65, Jun. 1975.
"Halftone Method with Edge Enhancement and Moire Suppression", Paul G. Roetling, Journal of the Optical Society of America, vol. 66, No. 10, Oct. 1976.
"Seybold Seminars '93: A Quick Overview from the High End", The Seybold Report on Publishing Systems, vol. 22, No. 15.
"Halftoning with Random Correlated Noise", Robert J. Rolleston, et al., Journal of Electronic Imaging, 1(2), 209-217 (Apr., 1992).
"Dithering with Blue Noise", Robert A. Ulichney, IEEE, vol. 76, No. 1, Jan. 1988.
ICASSP-92, 1992 IEEE International Conf. on Acoustics, Speech and Signal Processing. vol. 3, pp. 193-196, T. Mitsa et al.: "Power-spectrum shaping of halftone patterns and its effect on visual appearance".

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