摘要
以往的CCD摄像机通过曝光时间和信号增益调节光照强度时,二者不能被最优配置运用,难以最大限度的发挥它们的调光功效,特别是对于光照强度变化剧烈,动态范围大的状况,画面不清晰。针对上述不足,将直方图均衡化法进行一定的改进,精确配置曝光时间,优化信号增益系数,实现曝光时间与信号增益的最优化配置。经过实验验证,画面效果得到明显改善,调整时间不超过40ms,系统运行稳定、可靠。
The exposure time and signal gain can be used to adjust the light intensity for a conventional CCD camera,but both of them can not be configured best. It is also very difficult to maximize the effectiveness of their dimming, especially for the condition of the changed illumination intensity, the large dynamic range and the unclear picture.For the above-mentioned shortages, the histogram equalization certain improvements, the deployment of exposure time and signal gain were optimized through precise deployment of exposure time and optimization of signal gain coefficients. After the test, the screen effect has been significantly improved , the adjustment time is less than 40ms ,and the system is stable and reliable.
出处
《红外与激光工程》
EI
CSCD
北大核心
2016年第1期189-194,共6页
Infrared and Laser Engineering
基金
总装备部合同办项目
关键词
自动曝光
信号增益
灰度
直方图
automatic exposure
signal gain
grayscale
histogram
