[Feasibility study of a surgical planning protocol for orthognathic surgery utilizing similarity retrieval from database: A randomized controlled trial]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanYu L, Wu L, Liu X, Li Z.
europepmc +1 more source
An Improved Stereo Matching Algorithm Based on Graph Cuts
, 2010 针对基于图割法的立体匹配算法耗时太长的问题,提出了一种基于简化网格图的立体匹配算法.算法通过区域匹配算法得到每个像素的初始视差值,然后只保留完整网格图的部分可能的视差值,去除其余大部分的节点和边缘,建立简化的网格图.该方法大大缩减了网格图的容量,缩短匹配所用时间,并且能够选用更大的视差范围.实验证明,该算法能够得到比较理想的视差图 ...
徐方, 张令涛, 曲道奎
core
基于麦克风优化螺旋阵列的声学成像装置在局部放电定位中的应用研究
Gaoya dianqi现有的特高频、紫外等局部放电检测手段在缺陷定位方面存在一定问题，文中选取更为有效的超声定位检测手段，将其与麦克风阵列技术和波束形成算法相结合，考虑电力设备局部放电的声学信号特点，基于单臂和多臂螺旋阵列特点，优化阵列设计形成阿基米德单臂曲线，并与相匹配的延时波束成形算法相结合，以满足当前局部放电定位场景的需求。进一步，基于上述技术设计形成声成像装置，实现以热力图的形式实时显示声源在空间的分布状态。通过在输电线路、变电站等典型电力设备场景中的应用，声学成像装置能清晰地定位局部放电的点 ...
刘超 +6 more
doaj
[An unsupervised three-dimensional medical image registration method based on shifted window Transformer and convolutional neural network]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi Y, Ruan C, Ruan D.
europepmc +1 more source
, 2014 针对传统局部匹配算法在斜面场景匹配中所表现出的"阶梯效应",提出了一种基于最优斜面参数估计的局部立体匹配算法。该算法首先为每一个像素随机地分配一组斜面参数,然后以新的斜面参数所定义的支撑域下当前像素的匹配代价是否减小为准则,迭代地进行斜面参数的"邻域传播-单点优化"过程,并最终使得计算结果收敛到最优斜面,同时估计得到稠密的亚像素级视差。通过对典型斜面场景图像和Middlebury标准测试图像对的匹配实验表明,文中算法在将对普通场景的匹配效果保持在当前先进水平的同时,
曹晓倩, 马彩文
core
[Research progress in surgical treatment of calcaneal fracture malunions]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiJi D, Wang Q, Zhao H.
europepmc +1 more source
Research on Image Matching and Target Tracking Through Singular Value Decomposition
, 2005 在目标跟踪过程中,由于存在目标姿态变化和背景干扰,在跟踪过程中必须要对模板进行必要的修正,应该在获取目标模板后有一个可靠的模板更新策略.本文探讨了奇异值分解及其在图像匹配和目标跟踪中的应用,定义了一种近似奇异值向量并提出了一种基于图像奇异值特征向量数据特点的跟踪策略并作了大量试验 ...
史泽林, 黄莎白, 张志佳
core
[Optimized decomposition of dynamic electroencephalography-functional near infrared spectroscopy brain functional networks for the analysis of repetitive transcranial magnetic stimulation combined with motor training]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLu J +6 more
europepmc +1 more source
[Experimental study of patient-specific three-dimensional-printed drill guide-assisted C <sub>2</sub> pedicle screw placement in models derived from patients with basilar invagination]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi J +5 more
europepmc +1 more source
[Clinical efficacy of ALTF combined with "Y"-shaped great saphenous vein graft in repairing large soft tissue defects in the proximal-middle segment of the lower leg]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiZhong S, Wang YP, Xu CJ, Liu LF.
europepmc +1 more source