Method for identifying film type

Details Method for identifying film type Method for identifying film type

1993-02-10

1995-05-02

Moore, David K.

Image analysis

Histogram processing

382192, 348 96, G06K 946, G06K 966

Patent

active

054127378

ABSTRACT:
A method for identifying the film type of a color input medium having picture and film border areas and which is scanned to produce an input image having a multiplicity of color separations having portions corresponding to the picture and border areas, the method including the steps of creating picture histograms of the picture area of the input image, defining a dark level and a bright level for each of the picture histograms and identifying a film type by comparing the dark and bright levels to predetermined thresholds defining predetermined characteristics of a given film type.

REFERENCES:
patent: 4802107 (1989-01-01), Yamamoto et al.
patent: 4816903 (1986-09-01), Utsuda et al.
patent: 4829371 (1989-05-01), Hiramatsu et al.
patent: 4830501 (1989-05-01), Terashita
patent: 4929979 (1990-05-01), Kimoto
patent: 5053808 (1991-10-01), Takagi
patent: 5177602 (1993-01-01), Fujimori
patent: 5241378 (1993-08-01), Nishiguchi
patent: 5278921 (1994-01-01), Nakamura et al.
R. W. G. Hunt, "The Reproduction of Color", Fountain Press, England, 1975, p. 101.

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