激光主动成像系统的图像质量改善研究

Research on image quality improvement of laser active imaging system

在环境比较恶劣下条件下,激光主动成像系统的图像质量严重下降,为了获得更加理想的图像视觉效果,提出一种激光主动成像系统的图像质量改善方法。首先采用小波变换的多尺度分析功能对原始激光主动成像系统产生图像进行去噪处理,消除噪声去图像视觉效果的干扰,然后采用基于色彩恒常理论的Retinex算对图像进行增强处理,使图像更加符合人眼视觉特性,丰富图像的色彩信息,并采用双边滤波算法改善图像对比度,提高图像的动态范围,然后采用图像质量评价的主观和客观标准对图像质量改善效果进行分析。结果表明,本文方法明显改善激光主动成像系统的图像质量,可以满足激光主动成像系统的实时处理需求,具有良好的视觉欣赏效果。

The image quality of laser active imaging system is sharply declined in bad environment. In order to ob- tain better visual effect, an improving method is proposed in this paper. Firstly, denoting the original laser active im- age based on the multi-scale analysis function of wavelet transformation to deal with the interference. Then, enhancing the image through Retinex algorithm based on color constancy theory to make it meet the visual characteristics and with rich color information. Improving the image dynamic range by using bilateral filtering. And then, analyzing the image improving effect according to the subjective and objective standards of image quality evaluation. The results show that the method proposed can obviously improve image quality of laser active imaging system, can meet its real time pro- cessing demands and has good visual effects.