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  image matching
Texture is an important attribute for medical image matching and retrieval.
      
The SCSF is effective and efficient for image matching because it is independent of image distortion such as rotation and flip as well as it increases the matching accuracy.
      
Our experiments show that the image matching is quickly and efficiently with the use of SCSF.
      
Then image matching, based on the maximum correlation coefficient, is performed between registered images after the low contrast areas have been removed.
      
In this paper, an automatic approach with multi-step image matching algorithm is presented.
      
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A method for airplane pose measurement is proposed. During airplane flying, optical-electric phototheodolite has been used to track airplane and at same time acquire image sequence. Based on these images, a method for airplane pose measurement from image sequence is deeply studied from the view of photogrammetry and projective geometry. A novel idea, Parapoint Feedback Iteration, is been presented at first time and used in airplane pose measurement. Experiment results show its high accuracy and reliability.

探讨了一种基于序列影像的飞机姿态获取方法。基于这些影像和运动轨迹 ,从摄影测量和投影几何的角度出发 ,深入探讨了利用序列影像对空中飞行的目标进行姿态跟踪测量的方法 ,并提出了利用广义点反馈迭代的最小二乘方法 (parapointfeedbackiteration ,PFI)和模拟影像与真实影像匹配的目标姿态跟踪求解方案。

GPS technique has been applied to locate and navigate the unmanned aerial vehicle(UAV) widely,but it is restricted in wartime and the difficult area.A kind of method locating accurately the UAV using image matching technique and photogrammetric theory is presented.After the image obtained by UAV and the reference image are processed,the approximate points in pairs are found.Then the accurate coordinates of the matching points are calculated using the lease image matching,which may calculate the space location...

GPS technique has been applied to locate and navigate the unmanned aerial vehicle(UAV) widely,but it is restricted in wartime and the difficult area.A kind of method locating accurately the UAV using image matching technique and photogrammetric theory is presented.After the image obtained by UAV and the reference image are processed,the approximate points in pairs are found.Then the accurate coordinates of the matching points are calculated using the lease image matching,which may calculate the space location of the UAV using the photogrammtric theory.

GPS技术已广泛应用于无人机的空间定位和导航,但在战时、困难地区的应用会受到限制。本文提出了一种利用影像匹配和摄影测量原理实现无人机精确定位和导航的方法,首先对无人机获取的实时影像和基准影像进行小波变换处理,以获得足够的初选同名点位,然后利用最小二乘影像匹配获取精确的同名点坐标,使用这些同名点,经摄影测量处理得到了精确的无人机空间位置。

 
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