Research and Evaluation on Adaptive Filtering of Computer Video Electromagnetic Leakage Emission Reduction Image

摘要

The reduction reception of computer video electromagnetic leakage emission is an essentially process of obtaining a video image by receiving an attenuated electromagnetic signal and adjusting the device according to parameters such as a line frequency and a field frequency. In this process, the received image contains a large amount of noise due to the influence of space and equipment noise. In this paper, a method of adaptive filtering image is proposed to improve the image effect, and objective evaluation and signal-to-noise ratio analysis are carried out.