Method for comparing the colours of surface regions having selected colours

摘要

A colour television camera, a colour television monitor and an evaluation circuit are used to compare colours. The colour television camera, the colour television monitor and the evaluation circuit are connected to one another. The colour television camera is set to a selected colour. The setting is changed until the colour is displayed on the entire screen area. Values corresponding to the primary colour signals are then stored in the evaluation unit. Subsequently, the objects moving past the colour television camera are compared with the coloured surfaces in order to establish agreement with the stored values. <IMAGE>