无线激光通信图像去噪技术

无线激光通信是指利用激光束作为载波在空间（陆地或太空）直接进行语音、数据、图像信息双向传送的一种技术。本文主要研究图像信号的去噪技术。无线激光通信过程由于电子线路噪声，背景光，以及大气湍流的影响，其传输的信息必然会含有很多噪声。图像的噪声有很多，其中包括有高斯噪声，本文主要以它为例，在空域滤波法中，找到一种简单、有效的去除噪声方法。在实验的基础上，证明了用中值滤波算法结合拉普拉斯算子，消除椒盐噪声效果比较理想。

Image de-noising technology about the wireless laser communication

Wireless laser communication using the laser beams as a carrier refers to transport voice,data,image information directly in a two-way transmission technology in space(land or outer space).This article mainly researchs on the noise elimination technology of the image signels.As the electronic circuit noise,background light,and the impact of atmospheric turbulence exist,the information transmised is bound to contain a lot of noises.There ara lots of image noises,such as Gaussian noise and Salt and Peppet noise.Based on the experimental it is proved that the median filtering algorithm combining the Laplace operator is more satisfactory to eliminate Salt and Pepper noise.