Results 11 to 20 of about 605,106 (156)
Study on the recovery method of double pieces english file with two-sided fragment(双面碎片的英文文件复原方法研究)
Zhejiang Daxue xuebao. Lixue ban, 2014 对英文材料的双面规则碎片文件复原问题进行了研究.由于碎片边界是规则的几何形状，无法采用几何形状匹配算法进行复原，为此提出了基于碎片边缘像素特征的匹配复原算法，建立了双面二维灰度匹配数学模型.通过加入行约束条件，减少横向匹配中的纵向误差，并通过消除列匹配中的误差，优化了匹配算法.该模型可以实现块状双面英文碎片的完整复原.
LIUJunwei(刘俊玮) +3 more
doaj +1 more source
Parametric tread pattern model retrieval based on geometric features(基于几何特征的三维参数化轮胎花纹模型检索)
Zhejiang Daxue xuebao. Lixue ban, 2023 三维轮胎花纹模型检索是计算机辅助花纹设计的关键。提出了一种基于非精确邻接图匹配和Cluster Tree的检索方法，利用三维花纹设计参数和几何特征提高检索效率。将B-rep格式的轮胎花纹模型转化为属性邻接图，通过计算边相容度，对两个属性邻接图进行非精确匹配，计算其图相似度；通过设计参数对花纹数据库进行空间划分和递归聚类，构建以Cluster Tree为子树的索引结构，借助几何特征提升拓扑结构相近的花纹模型的区分度。将方法应用于自主开发的三维花纹设计软件平台，结果显示 ...
范宏宇(FAN Hongyu) +1 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Because magnetic permeability is an intrinsic property of materials, achieving the regulation of magnetic loss is one of the challenges for electromagnetic wave absorption materials. This paper focuses on the research idea of in situ growth of dispersed nanocrystalline FeSiB in an amorphous FeSiB matrix to regulate magnetic properties.
Lei Wang +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study developed a FeSiAl@LMPGP composite material to address the demand for low‐frequency electromagnetic absorption. Through controllable heat treatment, FeSiAl particles and PbO nanoparticles self‐assembled into a high‐density Mott–Schottky heterointerface structure, which exhibited a significant built‐in electric field (BIEF) effect ...
Yuqi Wang +5 more
wiley +1 more source
Gaoya dianqi, 2020 受风险指标影响,现有方法电网路径匹配效果不佳,无法获得成本最佳路线,因此,设计基于多维信息特征映射的电网风险区段路径匹配模型。采集电网风险区段路径数据并对其进行预处理,采用SNM方法对数据实施二次排序与清洗。通过3D mine软件,根据路径数据与地理特征信息构建电网风险区段路径的地理模型,提取电网风险区段路径特征。根据获取的特征结果,建立多维信息特征映射模型,得出多维信息特征相斥度函数,并采用BPSO算法优化与映射函数相应的权重值,实现电网风险区段路径匹配。分析实验结果可知 ...
刘世涛, 杨凯, 伍弘, 何宁辉
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Functional Ecology, Volume 40, Issue 2, Page 534-552, February 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie +6 more
wiley +1 more source
Infant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 2, Page 133-147, March 2025.Abstract Differences in mind‐mindedness and parental reflective functioning (PRF) were investigated in mothers and their 6‐month‐old infants from South Korea (N = 66, 32 girls) and the United Kingdom (N = 63, 26 girls). Mind‐mindedness was assessed in terms of appropriate and non‐attuned mind‐related comments during infant–mother interaction; PRF was ...
Yujin Lee +2 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 1, Page 36-43, July 2024.ABSTRACT Objective Although remarkable strides have been made in fetal medicine and the prenatal diagnosis of congenital heart disease, around 60% of newborns with isolated coarctation of the aorta (CoA) are not identified prior to birth. The prenatal detection of CoA has been shown to have a notable impact on survival rates of affected infants.
C. A. Taksøe‐Vester +8 more
wiley +1 more source
四川大学学报. 自然科学版, 2015 本文提出一种多尺度特征匹配的空间约束机制,Combinative Feature based on Constraint in scale space(CFCS-SIFT),该约束机制以SIFT特征点的尺度为基础,对多尺度空间中检测到的DOG特征点与Harris角点提供匹配空间约束,以提高正确匹配点对的数量.基于该约束机制,构造了一种融合DOG特征提取、Harris角点提取原理的SIFT描述符提取与匹配方法,该方法在多尺度空间中提取DOG特征点、Harris角点,并根据特征点的空间 ...
林强, 李征, 吴仲光
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四川大学学报. 自然科学版, 2011 采用Harris角点检测算法进行图像特征检测.使用快速SIFT图像匹配方法进行图像匹配并计算基础矩阵,去除误匹配点后用SIFT图像匹配的结果对Harris角点进行定位,并用ZNCC算法对角点进行增量匹配.该算法有效地弥补了SIFT图像匹配算法的特征点只分布于非边缘区域的问题,相比单纯SIFT算法可获得更多的匹配点,并且算法时间增加较少.
封泽希, 张辉, 丁清, 朱敏
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