摘要
为解决多路平行同时偏振成像系统由于光轴位置不同带来的成像偏差问题,设计了一种多源图像融合的光学前端,对3幅坐标不一的偏振图像进行实时配准研究。在平行光轴的基础上,通过在系统结构内部安装光楔,计算不同视场图像的成像视差,求得三方向偏振图像各个像素点对应的仿射变换需要的参数,并将其建立一套像素匹配存储表,通过直接查表的方式,调用仿射地址和对应的权值完成三方向偏振图像的配准,最后利用配准后的图像求解出偏振度图像。实验结果表明,该设计能够准确地实现三方向偏振图像的实时配准,避免了由于源图像的偏差产生的伪偏振现象,使配准后合成的偏振图像能够准确的反映目标的偏振信息并且达到了实时配准的要求。
In order to solve the problem of imaging deviation caused by the different position of optical axis of multi channel parallel simultaneous polarization imaging system,a multi source image fusion optical front-end is designed to research real time image registration of three different coordinates'polarization images.First,we install a light wedge within the system structure based on the parallel optical axis.Then we calculate the imaging parallax of different field image and obtain the parameters of affine transformation that correspond with each pixel of three directions polarization image.According to the parameters,a pixel matching table storage was established.At last we call affinity address and the corresponding weights by looking-up the table directly to complete three directions polarization image registration.Experimental results indicate that this design can accurately achieve the three directions polarization image registration in real-time,it avoid pseudo polarization phenomenon which caused by deviation of the source images.The polarization image which is obtained after registration can accurately reflect the polarization information of objectives,and it can also register the polarization images in real time.
作者
杨钒
钱立志
YANG Fan;QIAN Lizhi(High Overload Ammunition Guidance Control and Information Perception Laboratory, Army Officer Academy of PLA, Hefei Anhui 230031, China;Anhui Province Key Laboratory of Polarization Imaging Detection Technology, Army Officer Academy of PLA, Hefei Anhui 230031, China)
出处
《图学学报》
CSCD
北大核心
2017年第2期241-246,共6页
Journal of Graphics
基金
国家自然科学基金青年项目(41406109)
关键词
偏振成像
图像配准
平行光轴
双目成像
仿射变换
polarization image
image registration
parallel optical axis
binocular parallax
affine transformation
