摘要
针对提高CMOS图像传感器的动态范围,提出了一种新的组合滚筒式曝光技术。由目前现有的技术可知,多次滚筒式曝光一般选择在单帧的时间周期内完成。根据不同的曝光参数,CMOS图像传感器芯片输出不同的图像,然后再将其组合成一帧宽动态范围的图像作为最后输出。本文提出的方法,通过充分利用滚筒式曝光时的空闲电路资源,有效地缩短了相邻图像间的时间间隔。这种方法将多次滚筒式曝光穿插进行,实现对目标图像的多次成像,从而有效提高了系统效率和输出响应速度。
A new CMOS image sensor technology using combination rolling shutter to increase the dynamic range is described. Known from former methods, multiple rolling shutters are alternated in a single frame time. According to the different exposure parameters,sensor outputs different images,which combined to a wide dynamic range picture at last. By well using the free circuit resources when rolling shutter, this technology effectively shortens the time spacing between the two adjacent imaging. This presented method makes the rolling shutter interlaced to achieve the multiple imaging of the target object, so it has made a great improvement in term of system efficiency and output response speed.
出处
《传感技术学报》
CAS
CSCD
北大核心
2013年第3期328-332,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61036004
61274021)
