Change Detection Of Outdoor Cultural Relics: Method And System

At present,there are two major problems in the change detection for outdoor highvalue cultural relics.First,monitoring camera can not be restored to the previous position and attitude of the monitoring process,making two images collected relics unable to make minor changes detection;the second is outdoor light conditions have complicated changes with time,weather and other factors,causing great interference to the imaging.In this paper,to restore the camera position and attitude posture,first proposed the three-point method camera relocation method,the use of space geometry knowledge and the necessary hardware to achieve the restoration of the camera in the space of six degrees of freedom,which have reach the millimeter-level accuracy.Additionally,this article while using an interactive way to introduce visual navigation camera relocation method that displays real-time by the algorithm trends need to move the camera to improve the ease of relocation process.Compared relocation method in the threepoint method camera,visual navigation method simplifies the monitoring of hardware devices and operating procedures.For outdoor complex lighting conditions affect the image forming problems,we use the intrinsic image decomposition method to achieve a consistent image of two light conditions.By solving these two problems better and camera registration,image threshold mature image processing algorithms applied relics scene change detection method proposed for the high-value small changes can play a monitoring role in disease trends heritage body.In this paper,the experimental scene of this method is mainly the Summer Palace.After the text change detection monitoring and analysis methods,the main cause of the disease where the relics to the bulk of weathering and paint loss.In addition,in order to support the monitoring process,we design and build a set of the process equipment.The special equipment and high precision,easy to carry,can be repeatedly disassemble and assemble,suitable for monitoring outdoor activities most high value cultural scene.After much practice and update,it has stabilized,and the success of the Summer Palace outdoor artifacts and murals of Dunhuang Mogaoconducted field shooting and post processing results.