Aerial Image Rectification by Matching Map
航空影象与地图的配准纠正

This paper firstly analyzes problems existing in current rectification software,then presents a new rectification approach based on image and graphics overlaying and matching without the support of digital elevation model,and introduces fast overlaying technique of image and graphics based on indexed-color mode.To make rectification,this paper analyzes the feature of partial deformation,and presents a rectification formula for partial deformation based on experience.Finally,software of image rectification is developed combined general rectification and partial deformation rectification.In the experiment,a test image is rectified using the software with 13 selected control points,rectified image match the map very well by overlaying,and errors left are all within 2 pixels.The results show that rectification approach this paper presents is feasible and can be used to rectify image deformation induced by any factors.