Results 1 to 10 of about 279,279 (149)
Veterinary Dermatology, Volume 34, Issue 3, Page 235-245, June 2023., 2023 Background – Oral and parenteral drug delivery in horses can be difficult. Equine‐specific transdermal drug formulations offer improved ease of treatment; development of such formulations requires a deeper understanding of the structural and chemical tissue barrier of horse skin. Hypothesis/Objectives – To compare the structural composition and barrier
Samuel C. Bizley +3 more
wiley +1 more source
The Photogrammetric Record, Volume 37, Issue 180, Page 385-409, December 2022., 2022 Among all stereo matching methods End‐to‐End (E2E) learning methods show that they can achieve the lowest and most frequent minimum errors, however, their performance drastically changes across different test‐sites, which indicates poor generalisation capabilities.
Hessah Albanwan, Rongjun Qin
wiley +1 more source
Relative Radiometric Normalisation of Unmanned Aerial Vehicle Photogrammetry‐based RGB Orthomosaics
The Photogrammetric Record, Volume 37, Issue 178, Page 228-247, June 2022., 2022 This article deals with the problem of varied brightness of UAV images caused by the changing weather conditions. Relative radiometric normalization (RRN) of acquired RGB imagery is used to improve the visual quality of the resultant orthomosaic. The algorithm utilizes image positions and their relationships to group them, choose references, and ...
Elżbieta Pastucha +5 more
wiley +1 more source
Automated calibration of smartphone cameras for 3D reconstruction of mechanical pipes
The Photogrammetric Record, Volume 36, Issue 174, Page 124-146, June 2021., 2021 A framework for the laboratory calibration of smartphone cameras is proposed, introducing new methods for: (i) matching calibration targets; (ii) adjusting target eccentricity error without object‐space target information; and (iii) improving the calibration using a free‐network self‐calibrating bundle adjustment.
Reza Maalek, Derek D. Lichti
wiley +1 more source
A hybridized method for remote sensing digital images matching(一种遥感数字图像匹配的合成算法)
Zhejiang Daxue xuebao. Lixue ban, 2005 分析了传统的基于灰度和基于特征的匹配算法，提出了一种基于边缘特征和相关系数的新匹配算法.该算法首先对潜在匹配图像和模板图像利用高斯拉普拉斯(LOG)算子和梯度算子提取影像的边缘，然后提取二值化图像，最后再利用相关系数法对二值化后的边缘影像进行匹配运算，得到正确的匹配结果.该算法融合了传统算法的优点.利用该算法对上海的SPOT5 m分辨率不同波段的卫星影像进行了匹配试验，获取了比较好的匹配效果.
ZHANGDeng-rong(张登荣) +2 more
doaj +1 more source
Matching method based on Harris operator and wavelet pyramid(点特征和小波金字塔技术的遥感图像快速匹配技术)
Zhejiang Daxue xuebao. Lixue ban, 2007 提出了一种基于Harris特征点提取和小波金字塔的遥感图像快速匹配技术.在对多分辨率遥感图像进行完预处理的基础上，先利用Harris算子提取待匹配图像的特征点，然后利用小波金字塔完成匹配.通过杭州地区TM和SPOT遥感影像的配准实验，表明该算法减少了人工干预，提高了运算速度，又保持了匹配精度.
ZHANGDeng-rong(张登荣) +2 more
doaj +1 more source
全球能源互联网, 2019 电力巡检无人机提供大量的巡检图像，但由于电力设备故障稀少，其中只有少量的设备缺陷故障图像可供使用。为了提高设备缺陷故障识别精度并减少训练过拟合问题，首先介绍了基于迁移学习的小样本电力巡检图像处理方法，通过图像裁剪、翻转、旋转等数据增强技术对小样本图像进行扩充，同时采用生成对抗网络（GAN）来扩充基础样本；并使用迁移学习技术，将基于大规模图像数据的预训练深度卷积模型进行定制，调整该神经网络模型的输入层和最后两层参数，并对超参进行调优。实验结果表明，巡检设备故障（如导线断股和绝缘子串脱落等）准确匹配度近95%
陆继翔 +4 more
doaj +1 more source
An image representation method based on the similarity of feature points(基于特征点群相似度计算模型的图像表示方法)
Zhejiang Daxue xuebao. Lixue ban, 2017 针对空间金字塔匹配模型缺乏对图像中视觉物体旋转、平移和缩放的考虑问题，提出了一种基于特征点群相似度计算模型的图像表示方法.基于词汇树模型的粗匹配结果，通过特征点群拓扑、方向、距离等计算其相似度，并以此作为评价指标对匹配结果进行过滤；根据由特征点群计算所得的标准差椭圆的圆心、旋转角度对金字塔匹配的图像划分子区域并进行调整，从而得到图像抗旋转、平移和缩放的表示.分别在自建校园建筑物数据集和自建物体图像数据集上对方法进行了验证和比较，结果表明，该方法提高了分类识别的准确率和检索的查全率，特别是对于包含明显旋转、
HEJing(何敬) +4 more
doaj +1 more source
Gaoya dianqi, 2022 采用图像识别的方法进行隔离开关分合闸状态识别已有了部分工程应用，图像识别算法多是按照一幅图像识别一相触头配置的，工程中摄像头配置数量较多，且识别算法容易受周围环境影响。文中提出了一种基于轮廓匹配度的隔离开关三相分合闸状态同步识别算法，通过差分算法与OTSU二值化算法相结合的方法从一幅图像同步提取一组隔离开关的三相触头轮廓，计算轮廓匹配度，实现三相触头分合闸状态的同步定量识别。通过一组敞开式隔离开关三相标准的合闸过程视频对轮廓匹配度算法进行了验证，确定可以通过该算法能够实现三相触头分合闸状态的定量同步识别。
宋亚凯 +5 more
doaj
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