In the real-time image processing system of the airborne infrared camera, how to process a large amount of data and information in a limited time and effectively meet the real-time requirements of the system is a problem that needs to be solved as soon as possible. Based on this, this article meets the needs of system modularization design ideas, and proposes a real-time image processing system design based on CMOS, using DSP and FPGA as the core devices to realize the corresponding hardware circuit design, and using high-demand tracking in the real-time image processing system algorithm. The experimental results show that the functions and performance of the designed real-time image processing system can meet the expected demand, and it is practical and reliable.
In this experiment, the visible array CMOS image sensor irradiated by 532 nm pulse laser was carried out. The experimental results revealed that, with the increase of the incident power density, regular lightspot arrays appear around the main laser spot. When the laser energy density continued to increase, the phenomenon of asymmetric crosstalk appears in the image. It is analyzed that, the reason for the formation of spot array of CMOS image sensor is that after the laser was reflected by the CMOS photosensitive surface, it was reflected back to the CMOS photosensitive surface by the window glass and imaged on the photosensitive surface again. By analyzing the characteristic parameters of crosstalk line, it was considered that the crosstalk of CMOS image was the result of superposition of optical crosstalk and charge crosstalk.
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