分布式光电系统视距增强机理研究

发布时间：2018-04-05 13:16

本文选题：视距　切入点：SIFT匹配　出处：《西安工业大学》2017年硕士论文

【摘要】：随着科学技术的进步,光电成像系统的视距研究已在国内外展开。对于单个光电系统而言,改变系统本身的硬件以及传感器的尺寸可以有效的增强系统的视距,但是无论是改变系统本身还是改变传感器的尺寸都会受到材料、检测、加工难度等的制约,视距已达到现有水平的极限,很难再提高。因此,本文提出利用分布式光电系统来增强单个光电系统的视距。首先确定研究对象为两个单独的光电成像系统,分别获取两个通道的原图像,然后进行图像的预处理,再利用SFTF匹配算法对处理后的图像匹配,改进SIFT匹配算法再次进行匹配,得到更好的匹配结果。其次从金字塔形图像重构方法出发进行图像信息的重构,得到高分辨率图像。本文对基于拉普拉斯塔形分解的多传感器图像重构方法、基于比率塔形分解的多传感器图像重构方法、基于对比度塔形分解的多传感器图像重构方法、基于梯度塔形分解的多传感器图像重构方法进行了研究。最后通过主观和客观两个方面对重构后图像的质量进行了评价,得出重构后图像的空间分辨率比原图像的空间分辨率高,证明通过分布式光电系统可以增强单个光电系统的视距。
[Abstract]:With the development of science and technology, the field of sight research of photoelectric imaging system has been carried out at home and abroad.For a single optoelectronic system, changing the hardware of the system itself and the size of the sensor can effectively enhance the visual distance of the system, but whether it is changing the system itself or changing the size of the sensor will be subject to material, detection,Processing difficulty and other constraints, visual horizon has reached the existing level of the limit, it is difficult to improve.Therefore, a distributed photoelectric system is proposed to enhance the visual distance of a single photoelectric system.Firstly, two single photoelectric imaging systems are selected to obtain the original images of the two channels, then the image is preprocessed, and then the processed image is matched by the SFTF matching algorithm, and the improved SIFT matching algorithm is used to match the processed images again.Get a better match.Secondly, the pyramid image reconstruction method is used to reconstruct the image information, and the high resolution image is obtained.In this paper, the multi-sensor image reconstruction method based on Laplacian tower decomposition, the multi-sensor image reconstruction method based on ratio tower decomposition, and the multi-sensor image reconstruction method based on contrast tower decomposition are discussed.The method of multi-sensor image reconstruction based on gradient tower decomposition is studied.Finally, the quality of reconstructed image is evaluated from subjective and objective aspects, and the spatial resolution of reconstructed image is higher than that of original image.It is proved that the visual distance of a single optoelectronic system can be enhanced by distributed optoelectronic system.
【学位授予单位】：西安工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP391.41

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