Test of contrast of object and background based on ICCD

Apparent distance is a reflection of the performance of low-light night vision system, but also an important parameter indicator in the design stage of LLL night vision system. As the working environment is changing, it is difficult to accurately estimate the apparent distance. Except the parameters of the system itself and the series of parameters caused by the weather environment, the contrast of the target and background is also the important factor to affect performance of the system. In this paper, we use ICCD to test the contrast of target and background of several typical scenes in the use of low-light night vision system, and get the contrast of target and background, which is very important to the prediction of apparent distance.