Search Results Heading

MBRLSearchResults

mbrl.module.common.modules.added.book.to.shelf
Title added to your shelf!
View what I already have on My Shelf.
Oops! Something went wrong.
Oops! Something went wrong.
While trying to add the title to your shelf something went wrong :( Kindly try again later!
Are you sure you want to remove the book from the shelf?
Oops! Something went wrong.
Oops! Something went wrong.
While trying to remove the title from your shelf something went wrong :( Kindly try again later!
    Done
    Filters
    Reset
  • Discipline
      Discipline
      Clear All
      Discipline
  • Is Peer Reviewed
      Is Peer Reviewed
      Clear All
      Is Peer Reviewed
  • Item Type
      Item Type
      Clear All
      Item Type
  • Subject
      Subject
      Clear All
      Subject
  • Year
      Year
      Clear All
      From:
      -
      To:
  • More Filters
5 result(s) for "决策融合"
Sort by:
联合像素级和对象级分析的遥感影像变化检测
为改善高空间分辨率遥感影像的变化检测精度,提出一种联合像素级和对象级分析的变化检测新框架。首先将多时相影像进行叠合,对叠加影像进行主成分分析,并利用基于熵率的方法对第一主成分影像进行分割,通过改变超像素数目来获取多层次不同尺寸大小的超像素区域。同时,对多时相影像进行光谱差异和纹理差异分析,采用自适应PCNN神经网络方法进行图像融合,利用水平集(CV)方法对融合后的影像进行分割获取像素级变化检测结果。最后,结合多尺度区域标记矩阵对检测结果进行变化强度等级量化和决策级融合,作为变化检测的后处理部分,以获取最终的对象级变化检测结果。采用SPOT-5多光谱影像进行试验。结果表明这种新框架可以有效集成基于像素和基于对象两种图像分析方法的优势,能够进一步提高变化检测过程的稳定性和适用性。
利用多尺度融合进行面向对象的遥感影像变化检测
在面向对象的变化检测过程中,确定对象的最优分割尺度直接关系到后续的变化信息提取与分析.针对该问题,提出了基于多尺度分割与融合的对象级变化检测新方法.首先,利用由细到粗的尺度分割来获取不同尺寸的目标对象,然后依据对象的特征进行变化向量分析得到各个尺度上的变化检测结果.为了提高变化检测的精度,本文引入模糊融合及两种决策级融合方法进行多尺度融合,并利用SPOT5多光谱遥感图像进行试验.与像素级的变化检测方法相比,总体精度提高了10%左右,试验结果证明了这几种融合策略的有效性和可行性.
基于交互式分割技术和决策级融合的SAR图像变化检测
为免去降斑预处理及克服选择分布模型的限制,结合差异图的特点和一种不涉及分布模型的交互式分割方法,产生不同"种子点"下的变化检测结果后,再利用投票策略进行决策级融合给出最终的变化检测结果。分割中,将每个像素的特征设置为由差异图及静态小波变换分解差异图再丢弃高频系数后重构得到的各层表示内,对应位置上的灰度值构成的矢量。此特征及决策级融合的策略使本文变化检测技术对SAR图像中的斑点噪声具有一定的抗差性。在无需对SAR图像做预处理的情况下,对真实SAR图像数据集的变化检测结果证实了方法的有效性。
Face recognition by decision fusion of two-dimensional linear discriminant analysis and local binary pattern
To investigate the robustness of face recognition algorithms under the complicated variations of illumination, facial expression and posture, the advantages and disadvantages of seven typical algorithms on extracting global and local features are studied through the experiments respectively on the Olivetti Research Laboratory database and the other three databases (the three subsets of illumination, expression and posture that are constructed by selecting images from several existing face databases). By taking the above experimental results into consideration, two schemes of face recognition which are based on the decision fusion of the twodimensional linear discriminant analysis (2DLDA) and local binary pattern (LBP) are proposed in this paper to heighten the recognition rates. In addition, partitioning a face nonuniformly for its LBP histograms is conducted to improve the performance. Our experimental results have shown the complementarities of the two kinds of features, the 2DLDA and LBP, and have verified the effectiveness of the proposed fusion algorithms.
Heterogeneous information integration method for scheme decision making of industrial design
为有效融合工业设计方案决策中的异构信息, 引入云模型处理定性语言评价, 基于黄金分割方法将语言信息量化为云模型的数字特征, 分别构建语言值、区间数和实数相对优势矩阵。考虑决策过程的模糊性与不确定性, 将决策属性判断的自然语言采用区间标度量化, 构建非线性优化模型求解最优决策属性权重, 以最大似然估计实现群体决策的区间标度集结, 通过综合效用函数计算工业设计方案优劣。以某型指挥用控制台工业设计方案决策为例, 验证了所提方法能够有效融合异构决策信息, 辅助工业设计师和决策者准确把控意见并进行方案优选。