摘要
对于道路照明,路面亮度分布的均匀性是为机动车驾驶员提供安全舒适的视觉条件的保证。针对路面亮度分布检测的需求,从光度学原理出发,提出了一种基于CMOS图像传感器的亮度分布测量系统。通过CMOS图像传感器OV7670采集图像,以STM32作为微控制器对图像进行处理并计算路面亮度及亮度分布。通过CMOS图像传感器测量亮度原理,对图像采集处理的各部分电路及系统软件进行了详细的分析和说明。通过对参数进行标定,完成了对路面亮度分布的检测,能够满足系统的设计要求。
For road lighting,surface brightness uniformity is the guarantee to provide a safe and comfortable viewing conditions for motor vehicle drivers.In view of the road surface brightness distribution testing requirements,from the principle of photometry,puts forward a brightness distribution measurement system based on CMOS image sensor.By CMOS image sensor OV7670 to capture im-ages,and as with STM32 microcontroller for image processing and calculating surface brightness and brightness distribution.In the discussion of the principle by measuring the brightness with CMOS image sensor,for all the parts of the image acquisition and pro-cessing circuit and system software has carried on the detailed analysis and explanation.Through the parameter calibration,com-pletes to detect road surface brightness distribution,and the design meets requirements of the system.
出处
《电子技术应用》
北大核心
2016年第1期48-50,57,共4页
Application of Electronic Technique
基金
陕西省科技计划项目(2014K07-17)
西安市科技计划项目(CXY1436(1))
