Visual inspection is to use the machine instead of the human eye to make measurements and judgments. Visual inspection refers to the conversion of the ingested target into an image signal by machine vision products (ie, image capture device, divided into CMOS and CCD), and transmitted to a dedicated image processing system。

Converted the information according to pixel distribution, brightness, color, etc into digitized signals. The image system performs various operations on these signals to extract features of the target, and then controls the behavior of the device in the field according to the result of the discrimination. It is a valuable mechanism for production, assembly or packaging. It is invaluable in detecting defects and preventing the defective products from being delivered to consumers.

