图像融合技术在医学图像拼合中的应用

对基于图像互信息量的融合方法进行了研究.对直方图概率分布估计有所改进,并与Parzen窗函数估计方法进行比较.应用并比较Powell's和类统计梯度搜索策略的特点,对图像的预处理以及融合后图像的显示提出新的方法.应用这些方法拼合实际医学图像,得到很好的拼合结果.     

浅谈登记制度在市政管理中的适用

随着社会的发展,大量的市政不动产设施相继出现,且数量日益庞大。然而,由于我国尚未出台相关的登记制度,导致出现市政不动产设施产权不明晰、权益无从保障等混乱局面。基于此,该文从不同角度分析和探讨了登记制度在市政管理中的适用。     

Underwater image bidirectional matching for localization based on SIFT

For the purpose of identifying the stern of the SWATH （Small Waterplane Area Twin Hull） availably and perfecting the detection technique of the SWATH ship＇s performance, this paper presents a novel bidirectional image registration strategy and mosaicing technique based on the scale invariant feature transform （SIFT） algorithm. The proposed method can help us observe the stern with a great visual angle for analyzing the performance of the control fins of the SWATH. SIFT is one of the most effective local features of the scale, rotation and illumination invariant. However, there are a few false match rates in this algorithm. In terms of underwater machine vision, only by acquiring an accurate match rate can we find an underwater robot rapidly and identify the location of the object. Therefore, firstly, the selection of the match ratio principle is put forward in this paper; secondly, some advantages of the bidirectional registration algorithm are concluded by analyzing the characteristics of the unidirectional matching method. Finally, an automatic underwater image splicing method is proposed on the basis of fixed dimension, and then the edge of the image＇s overlapping section is merged by the principal components analysis algorithm. The experimental results achieve a better registration and smooth mosaicing effect, demonstrating that the proposed method is effective.     

加强我国电子商务税收对策分析

随着电子商务的普及和推广,已使现行税收制度的一些规定不适用或不完全适用于其发展。从征税环节和登记环节的设置、资金流的管理、税收的征管和支付体系的建立等5个方面论述加强我国电子商务税收管理的相关对策。     

基于卫星导航设备的多平台空间配准方法

主要针对现有多平台空间对准算法精度比较低,而我国卫星导航技术却不断成熟,研究了一种多平台空间配准方法,用于解决装备高精度导航设备的平台空间对准问题。详细分析了其空间对准的过程,并根据其流程和算法,进行了实例验证。仿真计算结果表明,该算法是有效的,可以较好解决空间对准问题。     

MUTUAL INFORMATION BASED 3D NON-RIGID REGISTRATION OF CT/MR ABDOMEN IMAGES

Introduction　　 Automating medical image registration is be-coming an increasingly important goal. It formsthe basis of image processing techniques to com-bine information from the different modalities,which are now frequently acquired for many pa-tients. Such combined representations of patientimages have been shown to assistin the interpreta-tion of the complementary information provided bythe modalities[1,2 ] .　　 A variety of imaging modalities gives insightto different parameters and in…     

1-Wire总线器件ROM搜索算法与即插即用技术研究

介绍了Dallas／Maxim公司1-Wire总线器件接口技术,研究了MicroLAN中单总线所挂载的多个器件的ROM光刻码与二叉树结构的映射关系,提出了参照二叉树路径搜索的ROM搜索算法设计及器件即插即用功能设计,通过测试运行所设计的系统C程序,验证了系统的可靠性与稳定性。     

移动IPV6通信注册的优化及性能评估

移动IPV6的家乡地址测试和转交地址测试引起较长时间的反应延迟,严重冲击了延迟敏感性的应用.提出了通信注册的改进和优化,这些改进和优化避免了两个地址测试引起的反应延迟.改进和优化的通信注册大约可以消除50%的标准通信注册引起的网络延迟,并提出了相应的安全保护机制.     

道岔后曲线上方接触网问题的分析及对策

介绍了道岔后曲线上方接触网易出现的问题,通过借助国内外先进的理论知识和成熟方法分析和研究了京沪线利国站-处道岔后曲线偏离受电弓轨迹的例子,得出接触网最大偏移值和定位器的拽拉角是影响和判断接触网稳定性的重要因素和方法,为以后在设计和施工中找到了行之有效的处理对策.     

自动照准型全站仪配合跟踪靶球测量可行性及精度验证研究

文章针对全站仪在船舶修造领域尚无法完全满足测量精度和效率的问题,提出了一种利用带有自动照准功能的全站仪配合跟踪靶球进行测量的方法,该方法实现了对测量目标的自动跟踪,消除了人工瞄准带来的人为误差,提高了测量数据的稳定性,同时,提高了转站测量时公共点的测量精度,降低了测量系统的整体误差,试验结果表明该方法具有实际可行性。