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Multi-scale hash encoding based neural geometry representation

Computational Visual Media 2024年第3期10卷 453-470页

作者： Zhi Deng haoyao xiao Yining Lang Hao Feng Juyong Zhang School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026China Alibaba Artificial Intelligence Governance Laboratory Alibaba GroupHangzhou 310017China

Recently, neural implicit function-basedrepresentation has attracted more and more attention,and has been widely used to represent surfacesusing differentiable neural networks. However, surfacereconstruction from point clouds or multi-view imagesusing existing neural geometry representations stillsuffer from slow computation and poor accuracy. Toalleviate these issues, we propose a multi-scale hashencoding-based neural geometry representation whicheffectively and efficiently represents the surface asa signed distance field. Our novel neural networkstructure carefully combines low-frequency Fourierposition encoding with multi-scale hash encoding. Theinitialization of the geometry network and geometryfeatures of the rendering module are accordinglyredesigned. Our experiments demonstrate that theproposed representation is at least 10 times faster forreconstructing point clouds with millions of *** also significantly improves speed and accuracyof multi-view reconstruction. Our code and modelsare available at https://***/Dengzhi-USTC/Neural-Geometry-Reconstruction.

关键词： neural geometry representation hash encoding point cloud reconstruction multi-view reconstruction

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Beagle Dogs Have Low Susceptibility to Florida Clade 2 H3N8 Equine Avian Influenza

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Virologica Sinica 2021年第5期36卷 1248-1251页

作者： Pei Zhou Xiangyu xiao Xinkai Hu Jie Dong haoyao Zhang Yanchao Li Shoujun Li Guangdong Provincial Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases College of Veterinary MedicineSouth China Agricultural UniversityGuangzhou 510642China Guangdong Technological Engineering Research Center for Pets College of Veterinary MedicineSouth China Agricultural UniversityGuangzhou 510642China

Dear Editor,Dogs were long considered refractory to influenza viruses until the equine-origin H3N8 canine influenza virus(CIV)was first isolated in the United States of America(U.S.A)in 2004(Crawford et al.2005).Since then,H3N8 CIV of equine-origin strains has been circulating in dogs in the *** 2006,another CIV of avian origin H3N2 subtype was isolated from dogs in China(Li et al.2010).Recently,H3N2 CIV strains have become endemic in dog populations in China,South Korea,and North America(Borland et al.2020).

关键词： H3N8 H3N2 Avian

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