The retinal image segmentation , the feature points of blood vessel extraction , the feature correspondency , the transformation model of retinal image and the registration parameter optimizing methods are all the main facts studied in the paper 主要研究内容包括视网膜图像血管网络的分割、血管特征点的提取、特征对应性、变换模型以及参数优化等方面。
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Also to get some new conclusion of glacial lakes burst floods , in possibility study of glacial lake burst , and in qualitified study of the safety of the glacial lakes . the first character of this paper introduce the background of this paper , set the goal , content and methodlogy of the study work in this paper . the second chapter of this paper focuses on the meterological character , runoff composition character , why not correspondency of ratio of rainfall and runoff in same period to annual value for nianchu river , lasha river , niyang river and the middle reach of yalu - zangbu river 本文第一章介绍了课题的研究背景，提出了研究目标、内容和方法；第二章重点分析了年楚河、拉萨河、尼洋河和雅鲁藏布江干流中游段的气候特征，径流组成特性，同期降水、径流占年总量比例的不对应特性和原因，径流年内年际变化规律及径流深分布特性，分析了天然洪水的特点和洪水参数；第三章介绍了冰川终碛湖的特点，结合已经发生溃决的冰川终碛湖的有关调查资料和考察资料，分析提出了危险冰湖判别指标和发生溃决的气候条件、周期性特征，提出了冰湖溃决洪水的计算途径。
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Effective approaches of forming & refining cc is also presented correspondency . this paper , taking xibei group as an object of study , discusses cc in detail using the method of quantitative & qualitative analysis , theory & practice analysis , enriches the theory related cc , establishes a set feasible indicator system of cc evaluation , presents some effective approaches to form & improve cc . the research conducts in this paper is also useful for other enterprises 本文运用比较分析、系统分析、定性与定量分析、理论与实践分析等方法，以西轴集团为研究对象，对核心竞争力做了深入研究，丰富了有关企业核心竞争力的理论；建立了一套可操作性强的评价指标体系，一定程度上弥补了核心竞争力知识在此方面的不足，为核心竞争力的量化做了有益探索；提供了一些有效的培育和提升的途径和方法，对那些可望塑造核心竞争力的企业具有参考价值。
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Second , more feature points are extracted for advanced registration based on projective transformation . compared with the ordinary method , our method has a better robust feature with higher accuracy , it also has a fully automatic feature so it need little human intervention in the whole process . the image segmentation , feature extraction , feature correspondency , and transformation model of multi - modality medical image registration are also studied in this paper 本研究的创新之处:针对rf和fa视网膜图像的特点，提出了新的血管细化的新方案;在特征点提取方面，提出了“三轮定心”这种新的特征点提取方法;提出了由“粗配”到“细配”的混合配准方法;力矩主轴法用于图像配准参数的估计及对应性尺度参数范围的定值。
