Color image processing system with hue processing and modificati

Details Color image processing system with hue processing and modificati Color image processing system with hue processing and modificati

1990-02-09

1992-06-30

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 1104

Patent

active

051268345

ABSTRACT:
A color picture image processing system for effecting hue processing and hue modification based on a derivation of chrominance components. A contour line determination unit determines a contour line in response to picture information and possibly sketch drawing information. A contour line chrominance providing unit determines a plurality of main points on the contour line and determines a chrominance main point vectors for the main points to provide chrominance contour vectors. The system includes a window unit for holding a new window setting resulting from processing a modification, a contour line modification unit for supplying instructions for modification of the contour line determined by the contour line determination unit and a contour line inner range chrominance processing unit for providing chrominance inner range vectors inside a range defined by the contour line. Synthesis processing of chrominances of picture elements constituting an instructed color picture this carried out, based on an information obtained from vectors representing a lamellar and vortex component parts of the chrominance component of the picture information.

REFERENCES:
patent: 4974071 (1990-11-01), Maeda
D. Darba et al.: "Separation du signal d'image couleur en deux composantes", Reconnaissance des Formes et Intelligence Artificielle, 4eme Congres, Paris, Jan. 25-27, 1984, vol. 1, pp. 15-24.
Patent Abstracts of Japan, vol. 12, No. 414, Nov. 2, 1988; & JP-A-63 151 268 (Matsushita Electric Ind. Co., Ltd), Jun. 23, 1988.

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