Method and circuit arrangement for partial recorrection of color recognition spaces in color recognition

US4464677A · kind A · utility

Assignee

• Dr. Ing. Rudolf Hell GmbH · DE

Inventors

• Franz Kuhn · Seligenstadt, DE
• Wilfried Lippek · Kiel, DE

Key dates

• Filing date: Sep 10, 1981
• Grant date: Aug 7, 1984
• Expiry date: Sep 10, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/466
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The invention relates to a method and to a circuit arrangement for the partial recorrection of color recognition spaces in color recognition. Before the color recognition, the color coordinates (color locations) of characteristic sample points are determined in the colors to be recognized and sample color numbers are allocated to them, said sample color numbers being deposited in a color recognition memory. All color numbers of the remaining color locations of the color space are determined from the sample color numbers and are likewise stored. The respective color locations or, respectively, memory locations occupied with the same color numbers form a color recognition space within the color space. For subsequent boundary correction of a color recognition space, at least one auxiliary color sample is taken from a color to be recognized in the area of the desired change and the necessary sample color number is allocated to it. The color numbers within a spatial cancel area around the color location of the auxiliary color sample are cancelled and, upon incorporation of all sample color locations and sample color numbers, new color numbers are instead calculated and stored for the ca…