Device and method for optical quality control of the coating or staining of a kernel-type substrate

The invention relates to a device and a method for optical quality control of the coating or staining of a kernel-type substrate, in particular seed with a colour and contrast intensive coating composition. The device comprises a portable video unit comprising a colour video camera (2) and an opaquely sealed housing (1) for attaching the camera and illumination means, as well as a image analysis unit (not shown), which is connected to the video unit and in which a computer program is installed for colour distribution analysis of the colour image recording. The method provides the analysis of a colour image of a substrate sample consisting of a plurality of closely packed kernels for colour distribution on individual kernels.