在现代工业自动化生产中，涉及到各种各样的检查、测量和零件识别应用，例如汽车零配件尺寸检查和自动装配的完整性检查，电子装配线的元件自动定位，饮料瓶盖的印刷质量检查，产品包装上的条码和字符识别等。这类应用的共同特点是连续大批量生产、对外观质量的要求非常高。本文就是通过视觉色差检测来实现这一目的。

-In modern industrial automation production, involving a wide range of inspection, measuring and part identification applications, such as auto parts and auto assembly size check the integrity checks, automatically positioning electronic components assembly lines, beverage bottle cap printing quality inspection , product packaging, bar code and character recognition. Common characteristics of such applications is a continuous mass production of very high surface quality requirements. This article is detected by visual component to achieve this purpose.