Color correction device

Abstract

Abstract PURPOSE:To make the device small in size and to quicken the processing speed by calculating only a 3-color separation signal in the secondary masking processing and applying accumulation to the output of calculation and an output of a correction coefficient memory sequentially till a color signal being the result of correcting one picture element is obtained. CONSTITUTION:A color original is subject to color separation, latch means 1-1, 2, 3 latch 3 color separation signals R0, G0, B0 obtained through photoelectric conversion in a prescribed timing and the 3 color signals are arranged into 3-color parallel signals in the unit of picture elements. Then square calculation means 2-1-3 outputting a square value of one color separation signal, multiplication means 3-1-3 receiving 2-color separation signals among 3 color separation signals and outputting the products, a means 6 setting the correction coefficient in the secondary masking processing, and accumulators 8-1-3 storing the correction coefficient, accumulating the correction coefficient and the 3-color separation signal or the output of square or multiplication calculation and obtaining a color signal corrected by one picture element are provided to the device. Thus, the masking processing is implemented at a high speed and the scale of circuit is made small.

Inventors

• 👤 Takashi Yumiba
• 👤 隆司 弓場
• 👤 Shinichi Konishi
• 👤 信一 小西
• 👤 Yoshiteru Namoto
• 👤 名本　吉輝

Bibliographic Details