对CCD成像系统的AGC(Automatic Gain Control)、背光补偿、伽玛校正等信号处理过程进行了理论分析,在此基础上,讨论了CCD成像系统信号处理过程的仿真与参数优化方法,编写了相关仿真软件。实验结果表明:所讨论的方法能够实现CCD成像系统信号处理过程的软件仿真,并同时实现相关控制参数的优化。
介绍了一种微型无线高灵敏度CCD成像系统.该系统由基于Exview HAD CCD的微型成像系统及微型无线视频发射器组成,具有体积小、重量轻、灵敏度高等特点。文中重点介绍了微型高灵敏度成像及无线视频传输的工作原理、基本构成及电路设计。同时,分析了在目前技术条件下实现CCD成像及无线视频传输微型化的主要途径。最后,对微型高灵敏度CCD成像系统与普通CCD进行了对比测试,并对测试结果进行了分析.
A novel frame shift and integral technique for the enhancement of low light level moving image sequence is introduced. According to the technique, motion parameters of target are measured by algorithm based on difference processing. To obtain spatial relativity, images are shifted according to the motion parameters. As a result, the processing of integral and average can be applied to images that have been shifted. The technique of frame shift and integral that includes the algorithm of motion parameter determination is discussed, experiments with low light level moving image sequences are also described. The experiment results show the effectiveness and the robustness of the parameter determination algorithm, and the improvement in the signal-to-noise ratio (SNR) of low light level moving images.
