控制参数优化是提高数字CCD成像系统的成像质量,增强其对复杂环境的适用能力的基础。建立一种数字CCD成像的控制参数优化实验系统。在对数字CCD成像的信号处理过程进行了理论分析的基础上,通过基于EXview HAD CCD的成像模块、控制模块及其控制软件设计,实现数字CCD成像系统相关参数的实时控制及人机交互。实验结果表明,实验系统的成像质量对各项控制参数具有良好的响应。
The design of experimental system of digital imaging system for control parameter is discussed in detail. Signal processing of digital CCD imaging system is first analyzed. Then the real time control of CCD driver and digital processing circuit and man-machine interaction are achieved by the design of digital CCD imaging module and control module. Experimental results indicate that the image quality of CCD experimental system makes a good response to the change of control parameters. The system gives an important base for improving image quality and the applicability of micro imaging system in complex environment.
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.
