ID 原文 译文
21805 首先采用多尺度线性滤波方法分割出图像中的血管，并利用图像金字塔对分割后的图像进行下采样，然后利用互信息计算待配准图像与参考图像的相似性，通过进化策略对配准参数进行优化，获得互信息最大时图像的空间变换矩阵，实现FFA图像的配准。 Firstly, the vessels of image sequence are segmented by multi-scale linear filter and down sampled hereafter by image pyramid. Then, the similarity of sampled images is calculated by mutual information and the evolution strategy is adopted to optimize the registration parameters. Finally, the transformation matrix with maximum mutual information is obtained to register the FFA image.
21806 采用上述方法，对4位患者共计1039帧FFA图像进行测试，总体配准率达到93%，失败率仅为1%；与常用的配准方法相比，所提方法的配准率、配准速度和鲁棒性等综合性能良好，为FFA影像的定量分析在未来的临床应用奠定了基础。 Tests with FFA image sequences of 4 patients (total 1039frames) show that the overall registration rate of the algorithm reaches 93% and the failure rate is only 1%. Compared with the classical registration methods, the proposed method shows better comprehensive performance in terms of registration rate, computing speed as well as robustness. It lays basic foundations for quantitative analysis on FFA images and potential clinical application.
21807 针对弹载 SAR 平台非直线轨迹运动和大斜视成像的特点，该文提出一种基于局部直角坐标和子区域处理的频域成像算法。 The missile-borne SAR platform has the characteristics of nonlinear trajectory and high-squint mode. A frequency-domain imaging algorithm based on local Cartesian coordinate and subregion processing is proposed.
21808 对大斜视成像模式，采用局部直角坐标系建模的方法，使距离走动校正后的方位信号具有更高的近似精度； For high-squint mode, the range model is built in local Cartesian coordinate to match accurately the azimuth signal after range walk correction.
21809 为精确补偿包络和相位的方位空变，采用子区域成像的方式，可显著提高场景边缘处的聚焦质量； To compensate the azimuth-dependent range cell migration and Doppler parameters accurately, the imaging area is divided into several subregions.
21810 将各子区域图像校正至统一的地面坐标系下，即可得到最终的 SAR 图像。 The final focused image can be obtained when all the subregion images are interpolated uniformly into the ground coordinate.
21811 点目标仿真和实测数据验证了所提算法的有效性。 Finally, the point targets simulation and real SAR data verify the effectiveness of the proposed algorithm.
21812 为了满足业务多样性对5G网络切片带来差异化需求的同时保证切片的可靠性，实现网络资源的优化配置。该文针对5G网络切片的动态映射、轻量级可靠映射问题，提出对计算资源、链路资源和RRU频谱资源联合分配方案。 To meet the diversified demand of 5G Network Slicing (NS), while ensuring the reliability of slice, to achieve the optimal allocation of network resources, considering the dynamic mapping and lightweight reliable mapping problem of network slicing, this paper proposes a joint allocation scheme of computing resources, link resources and the spectrum resources of Radio Remote Unit (RRU).
21813 首先，该方案建立面向可靠性约束的多目标资源分配模型，引入李雅普诺夫优化模型，在保证队列稳定同时优化资源分配。 Firstly, a multi-objective resource allocation model oriented to reliability constraints is established, and the Lyapunov optimization model is introduced to ensure the queue stability and optimize the resource allocation.
21814 其次，提出了基于队列稳定性的虚拟节点映射算法和基于可靠性的虚拟链路映射算法。 Then, the virtual node mapping algorithm based on queue stability and virtual link mapping algorithm based on reliability are proposed.