摘要
为实现图像采集的灰度均衡,提出了线阵接触式传感器图像灰度自动增益控制的新方法,在了解线阵CIS图像采集系统基本结构的基础上,利用AD9822芯片进行64级增益设置,并采用二分法进行闭环增益参数的调节。实验证明,新方法提高了采集的图像质量,可以取得良好的二值化图像分割效果,并且线阵CIS图像采集系统结构简洁、易实现,能够满足实时处理的要求。
In order to realize gray scale balance of image acquisition, the new method of automatic gain control for linear array contact image sensor （CIS） is proposed. The basic structure of linear array CIS image acquisition system is introduced in detail, and the methods of 64-step gain settings by adopting AD9822 chip, and closed-loop gain parameter adjustment by adopting dichotomy are proposed. The experiments prove that the new method enhances the quality of images collected, and obtains the effects of excellent binary image separation ; and the linear array CIS image acquisition system is in simple structure, easy to be implemented and can meet the real-time processing requirement.
出处
《自动化仪表》
CAS
北大核心
2011年第2期78-80,共3页
Process Automation Instrumentation
基金
广东省粤港招标项目基金资助项目(编号:20091683)
关键词
接触式图像传感器
图像采集
灰度平衡
二分法
自动调节系统
Contact image sensor（CIS） Image acquisition Gray scale balance Dichotomy Automatic regulation system
