Color pattern recognizing method

Abstract

Abstract PURPOSE:To discriminate information of an area to be detected, from an integral value, and to execute exactly the recognition, by deriving a ratio of a tri- color separation video signal of each point of a picture which is subjected to image pickup, and the sum of three signals, deriving a color of its point from this ratio, and integrating each color. CONSTITUTION:An area to be detected of an article is subjected to image pickup by an industrial color TV3, and each color separation video signal of R, G and B of a picture which is subjected to image pickup is digitized by an A/D converter 5 of an operating circuit. A ratio of said each video signal of R, G and B, and the sum of the three signals is derived by a normalizing circuit 6, and normalized values RR, RG and RB are added to a comparator 7. They are compared with standard patterns BRa, RGa and RBa from a color pattern memory 8, by this comparator 7, and when they are below a set value DR of an allowable value setting device 9, a color C of a picture element is outputted. Subsequently, the color C of all pictures is integrated by an integrator 10, an integral value SI is added to a comparator 11, is compared with contents from a standard pattern memory 12, and in accordance with whether it is below a value DN of an allowable value setting device 13 or not, a prescribed pattern is decided.

Inventors

• 👤 Takashi Ito
• 👤 隆 伊藤
• 👤 Takao Wada
• 👤 多加夫 和田
• 👤 Shigeki Yamauchi
• 👤 茂樹 山内

Bibliographic Details