Method and apparatus for recognizing colored pattern

Details Method and apparatus for recognizing colored pattern Method and apparatus for recognizing colored pattern

1974-06-28

1976-03-02

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

250226, 356 77, 356 96, 356179, G06K 712

Patent

active

039421546

ABSTRACT:
The colors of individual picture elements in a fabric pattern design are encoded by comparing the level of transmittance or reflectance of the picture element at preselected wavelengths with stored values representing a reference color to generate a multibit code indicative of the color of the picture element. A comparator used for this purpose incorporates an error either proportional to the wavelength or of constant value so that the output of the comparator will indicate identity with the stored value if the input value for the picture element is within a certain range of the stored value.

REFERENCES:
patent: 3100264 (1963-08-01), Jaffe et al.
patent: 3555852 (1971-01-01), Stock et al.
patent: 3578976 (1971-05-01), Schunack
patent: 3621250 (1971-11-01), Wetzstein
patent: 3663813 (1972-05-01), Shaw
patent: 3814932 (1974-06-01), Anati et al.
patent: 3829218 (1974-08-01), Alyanak
patent: 3858044 (1974-12-01), Frappe

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