基于图像分层搜索的地形轮廓匹配算法设计  

Design of TERCOM Algorithm Based on Image Layered-Searching

作　　者：于家城[1] 晏磊[2] 贺翔[3] 

机构地区：[1]华北科技学院电子信息工程系,河北三河065201 [2]北京大学空间信息集成与3S工程应用北京市重点实验室,北京100871 [3]河南电力试验研究院,河南郑州450052

出　　处：《海洋测绘》2008年第6期33-35,39,共4页Hydrographic Surveying and Charting

摘　　要：应用图像分层搜索序贯判决算法,进行海底地形轮廓匹配(TERCOM)算法设计。建立了上下两层同时匹配的比较控制逻辑,既提高了匹配速度,又减少了误匹配,增强了地形二维匹配的健壮性。应用实际海图原始数据进行仿真。结果表明,该算法在保持匹配速度的同时具有较高的匹配精度和抗差特性。A seafloor terrain contour matching （TERCOM） algorithm based on image layered -searching is designed. The distinguishing sequence algorithm in image layered- searching is applied to accelerate TERCOM by dividing the terrain map to three layers. Furthermore, a comparing logic is construced between the second and third layer. By this means, matching rate is increased and false matching is decresed. The algorithm is verified by using practical water depth data of certain seafloor. Simulation results show that it can obtain higher precision with somewhat robusticity.

关 键 词：地形轮廓匹配 分层搜索序贯判决算法 粗匹配 精匹配 

分 类 号：P208[天文地球—地图制图学与地理信息工程]