编码曝光相机系统设计

System design of camera for coded exposure

在研究编码曝光理论基础上,设计了应用型嵌入式编码曝光相机系统。在采集运动目标图像时,按照预设的编码时序控制曝光快门,得到了光生电荷多次叠加一次转移的图像。该图像为具有编码曝光信息的运动模糊图像,有更多的图像细节信息。编码曝光图像信号经过AD转换后将数据暂存在数据存储器,再经核心器件解码模块输出复原图像。实验结果证明,编码曝光相机能有效解决线性运动模糊问题。在相同测试条件下,利用无参考图像评价指标测试,编码曝光条件下复原图像质量的指标平均值均比一般单次曝光条件下复原图像质量提高了近2倍。

Based on the theory of coded exposure,an applied embedded coded exposure camera system was designed.The exposure shutter of camera was controlled according to the preset coding sequence when collecting the moving target image,and the image of photo-generated charge multiple superimposed with a transfer was obtained.The acquired image was a motion blurred image with coded exposure information,which had more details of the target.The data was temporarily stored in the data memory by the coded exposure image after the AD conversion,and the restored image was decoded by the core device.The experimental results show that the coded exposure camera can effectively solve the problem of linear motion blur.In the same conditions,the index average value of restored image quality under coded exposure condition is increased nearly twice than that of restored image quality under single exposure condition by using the no-reference image evaluation index test.