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融合显性和隐性度量的多模图像配准算法 被引量:4
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作者 谷雨 徐英 陈华杰 《信号处理》 CSCD 北大核心 2016年第6期669-675,共7页
为解决基于隐性度量的图像配准算法初始配准误差大容易引起失配的问题,本文提出了一种融合显性度量和隐性度量的多模图像分层配准算法。首先采用金字塔分解算法得到低分辨率待配准图像。然后在每一层金字塔图像中,先采用互信息作为显性... 为解决基于隐性度量的图像配准算法初始配准误差大容易引起失配的问题,本文提出了一种融合显性度量和隐性度量的多模图像分层配准算法。首先采用金字塔分解算法得到低分辨率待配准图像。然后在每一层金字塔图像中,先采用互信息作为显性度量,利用粒子群算法获得初始的配准参数;以此作为初始值,采用基于隐性度量的配准算法,利用融合粒子群和鲍威尔搜索法的优化算法获取更准确的配准参数。基于低分辨率图像计算得到配准参数后,先对高分辨率待配准图像进行变换,然后利用提出的上述算法进行参数优化,根据每层得到的配准参数计算最终的配准参数。最后,采用可见光与红外图像、多波段SAR图像进行了配准实验。实验结果表明,提出的算法适用于多模图像配准,能够减小配准误差,具有一定的适用性。 展开更多
关键词 图像配准 显性度量 隐性度量 粒子群 鲍威尔搜索法
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Measuring the Complexity of Business Organization and Business Software Using Analytic Hierarchy Process (AHP)
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作者 Alen Jakupovie Mile Pavlie 《Computer Technology and Application》 2011年第9期736-747,共12页
The paper shows a proposition of metrics for measuring the complexity of the business organization and business software. The metrics is based on a subjective estimation of complexity of the elements from a part of th... The paper shows a proposition of metrics for measuring the complexity of the business organization and business software. The metrics is based on a subjective estimation of complexity of the elements from a part of the structure of business organization or business software in relation to other elements from the observed part. Estimation is performed based on the measuring scale for comparison of complexity of elements, and reaching a final conclusion on the complexity of elements in relation to other elements, through the Analytic Hierarchy Process (AHP). Defined in this manner, the metrics represents a unique metrics for measuring the complexity of elements of business organization and business software, which enables their comparison. The paper also presents a short overview of existing metrics for measuring the complexity of business organization and business software. 展开更多
关键词 Analytic hierarchy process (AHP) business organization business software COMPLEXITY metrics
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Application of Nanoindentation Technique in Wood Science
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作者 WU Yan ZHOU Dingguo +1 位作者 WANG Siqun ZHANG Yang 《Chinese Forestry Science and Technology》 2006年第3期6-12,共7页
Nanoindentation technique is a technique that determines the mechanical properties of a material in sub-micron scale. The technique involves penetrating a sample material using an indenter, while the penetration depth... Nanoindentation technique is a technique that determines the mechanical properties of a material in sub-micron scale. The technique involves penetrating a sample material using an indenter, while the penetration depth and load are recorded so that stiffness and hardness of the indented location can be subsequently calculated. The micron spatial resolution in nanoindentaion tests renders the technique very useful in the investigation of the wood cell-wall level and polymer interphase. This review mainly discussed the principle of nanoindentation and its current applications in wood science field. 展开更多
关键词 NANOINDENTATION atom force microscope HARDNESS elastic modulus
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