3---2016-0162 吴勇 - 地理研究.pdf

第18卷 第8期 Vol. 18, No.8 2016 年8 月 Aug., 2016 引用格式：吴勇,姚凌,童为民.基于可视范围的图像检索方法[J].地球信息科学学报,2016,18(8): 1030- 1036. [ Wu Y, Yao L, Tong W M. 2016. A new image retrieval method based on image viewshed. Journal of Geo- information Science, 18(8): 1030- 1036. ] DOI: 10.3724/SP. J. 1047.2016.01030 基于可视范围的图像检索方法 1,2 3 1 吴 勇 ，姚 凌 ，童为民 1. 福建师范大学地理科学学院,福州350007 ；2. 福建省陆地灾害监测评估工程技术研究中心，福州350007 ； 3. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室，北京 100101 A New Image Retrieval Method Based on Image Viewshed 1,2* 3 1 WU Yong , YAO Ling and TONG Weimin 1. College of Geographical Science, Fujian Normal University, Fuzhou 350007, China; 2. Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fuzhou 350007, China; 3. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Abstract: Image is a natural representation of the real world, which has the characteristics of intuitionistic expression and rich content. It has become an important visual data source in GIS data acquisition and application. With the rapid development of hardware terminal, the sensors integrated in mobile terminal become more abundant, and multi-sensor data fusion has become a trend in mobile GIS data collection. Aiming at the problem of obtaining azimuth deviation of mobile terminal, this paper emphasized on the acquisition algorithm of camera shooting directions, which was based on a gravity sensor and a magnetic sensor embedded in mobile terminals. Based on the