近年来,数字技术越来越广泛地深入到人们的工作和生活中。个人计算机的功能不断加强,使得影像数字化在PC机上实现成为可能。扫描仪正是把传统的影像转化为数字影像的设备之一。它把原始稿件的模拟光信息转换为一组象素信息,最终以数字化的方式存储于数字文件中,实现了影像的数字化。技术的成熟与价格的下降,使得扫描仪成为许多工作中不可缺少的计算机辅助设备。 In recent years, digital technology has become more and more widespread in people’s work and life. Personal computers continue to strengthen the function, making the digital image on a PC machine possible. Scanners are just one of the devices that transforms traditional images into digital images. It converts the original manuscript analog light information into a group of pixel information, and finally digitally stored in a digital file, to achieve the digitization of the image. Technology matures and price declines, making scanners an indispensable computer aided device for many jobs.