最大集团图搜索法用于关系结构约束的全局等高线断线连接

介绍了关系结构约束的全局等高线断线连接的最大集团图搜索法的原理与实现途径,实验中与局部断线连接方法作了对比实验。结果表明:全局连接具有自动纠错效果,具有更高的正确连接率。     

海域使用管理GNSS基准框架集成技术研究

针对海域使用动态监测与管理,讨论海域使用动态监测的特点。分析综合运用创新的并行动态二级GNSS布网空间框架结构体系。建立连云港首级并行动态GPS控制网系统和专业服务海域使用动态监测E级GPS工作基点网的模型。     

基于单相机和结构光的纹理缺乏目标三维重建

提出了利用结构光自动匹配同名点的方法,解决了纹理缺乏目标难以自动匹配同名点的难题,介绍了利用单相机和结构光对纹理缺乏目标进行三维重建的全过程。     

Multi-oriented and layered structures of lith osphere in orogenic belt and their effects on Cenozoic magmatism

Integrating the surface structures with the reinterpretations of 3-D velocity images, this paper puts forward a kind of multi-oriented and layered structure for those of the upper and mid-lower crust, lithospheric and asthenospheric mantle in Tethyan orogenic belt of western Yunnan and Sichuan, China (Sanjiang belt). There exists a detachment between upper and mid-lower crust. The lithospheric mantle is a rigid and competent body unable to be deformed which preserved the older tectonic framework. The asthenosphere is an imcompetent layer that is easy to be deformed, and behaves as an initiation region of deformation, and its structural patterns reflect younger tectonics. The Cenozoic intracontinental magmatism of this region is controlled by: (i) sub-meridional and NNE trending asthenospheric upwelling around the western margin of Yangtze block; (ii) crust-mantle transitional layer formed by underplating of ascending melts; and (iii) intersection or transformation of regional structures such as major faults.     

Semiautomatic building extraction from stereo image pair based on lines grouping and least squares matching

The paper presents a general paradigm of semiautomatic building extraction from aerial stereo image pair. In the semiautomatic extraction system, the building model is defined by selected roof type through human-machine interface and input the approximation of area where the extracted building exists. Then under the knowledge of the roof type, low-level and mid-level processing including edge detection, straight line segments extraction and line segments grouping are used to establish the initial geometrical model of the roof-top. However, the initial geometrical model is not so accurate in geometry. To attain accurate results, a general least squares adjustment integrating the linear templates matching model with geometrical constraints in object-space is applied to refine the initial geometrical model. The adjustment model integrating the straight edge pattern and 3D constraints together is a well-studied optimal and anti-noise method. After gaining proper initial values, this adjustment model can flexibly process extraction of kinds of roof types by changing or assembling the geometrical constraints in object-space.     

小波变换的异常地质体识别

针对工程勘探中识别异常地质体的问题,该文提出了一种采用一维二进小波分析寻找局部物性陡变点,叠加在视电阻率增强表达图像上进行异常地质体识别的数据挖掘方法。该方法主要基于数据处理,对解释人员的经验背景知识依赖程度低。在滇中引水前期工程勘探中,该方法被应用于2号剖面线的地质异常区域识别,识别的结果除了能基于地质资料进行合理性的解释外,与常规物探解释成果相比,该方法能够得到更为精细化的可视化表达成果,为地质工程中的预测预报提供决策支持。     

共轭方向直接法及其收敛性

本文给出一种新的直接法，构造一组特定的共轭方向，使其只需沿一个方向进行一维搜索，比通常的共轭方向法节省了许多一维搜索的工作量，从数值计算上看，迭代次数较Ｐｏｗｅｌｌ法有明显减少。     

中国造山带研究的回顾和展望

本文简要回顾了20世纪50年代以来中国地质学家在研究显生宙陆（板）缘造山带或古大陆边缘造山带中所取得的进展：多数巨型造山系经历了多阶段古洋盆形成和消亡，陆块碰撞演化历史；离散大陆边缘多样性；洋盆产出环境和消减 迁移多样性。近20年来我国学者加强了造山带三维变形运动学研究，提出了多层次滑脱叠置构造，剖面上、平面上的楔入构造等重要新认识。最后指出中国大陆造山带今后研究热点和展望。     

国内外地下水监测技术与管理比较研究

受自然地理、气候环境和经济社会等影响,不同地区、各国之间对地下水的开发利用程度不同,对地下水的监测管理差别很大。作者在系统收集整理欧美等主要国家地下水监测管理的有关论文和成果基础上,结合多年从事地下水工作的实践与心得体会,根据我国地下水监测与管理的实际情况,就我国与欧美等主要国家在地下水监测网布设、监测技术方法、监测数据处理和信息成果应用、地下水法规管理等方面的做法进行系统的对比和分析,以期寻找差距、借鉴经验,并对如何提高和促进我国地下水监测与管理工作进行了展望。