Key Technologies Of Low-light-level Dynamic Scene Generation System Based On DMD

Low light level imaging technology is one of the major night vision technology at home and abroad, and have a wide range of important applications both in military and civilian fields. However, night vision imaging system detects face a complex, dynamic information space constantly. Traditional physical scene simulation technology cannot meet the continuous development of the new low light level imaging system, the overall performance evaluation and performance testing, and quality control and other needs. In this regard, it is urgent demanded to be able to provide real-time dynamic scene for low-level-light night vision system. In this paper, a DMD-based dynamic scene generation system is built in laboratory, and the night spectral fitting is researched to provide foundation for the testing of night vision performance indoor.In this paper, low-level-night dynamic scene generation system based on DMD is designed, and the components of the system are analyzed. Because the intensity and spectral distribution of the light source has a great influence on the performance of night vision system. Spectral structure method based on genetic algorithms was proposed to fit two typical spectral of night, clear moonlight and moonless starlight. A high spectral matching light was got.In this paper, the principle of low-level-light scene simulation were analyzed to generate dynamic scenes with computer, and DMD was used to generate the dynamic scenes with 100 Hz. With the fitting night sky light, and a dynamic scene generation system was set up in the laboratory. The system can be used to test the overall performance of the night vision system in the laboratory, which can enhance our overall optimization of design and equipment development level for LLL systems.