检索结果-南通市图书馆

Handheld 3D Scanner for Small Objects Using Kinect

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2016年第4期14卷 377-383页

作者： Chia-Chi Hsu chung-lin huang Taiwan Residents Army Department of M-Commerce and Multimedia Applications Asia UniversityTaichung 41354

This paper presents a handheld 3D vision-based scanner for small objects by using Kinect. It is different from the previous color-glove-based approaches which require segmenting the target object. First, we eliminate the noises and the outliers caused by holding hands. Second, we apply Kinect-fusion algorithm and truncated signed distance function （TSDF） to represent 3D surfaces. Third, we propose a modified integration strategy to eliminate the hand effect. Fourth, we take advantage of the parallel computation of GPUs for real-time operation. The major contributions of this paper are （1） the registration precision is improved, （2） the oflline amendment and loop closure operation are not required, and （3） concave 3D object reconstruction is feasible.

关键词： Handheld 3D scanning Kinect-fusion,Truncated signed distance function (TSDF).

Real-Time Human Body Motion Capturing System

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2017年第2期15卷 115-122页

作者： chung-lin huang Chien-Wei Hsu Zhi-Ren Tsai Department of M-Commerce and Multimedia Applications Asia UniversityTaichung 41354 MediaTek Inc.Hsinchu department of computer science and information engineering Asia UniversityTaichung 41354

This paper proposes a human body motion capturing system using the depth images. It consists of three processes to estimate the human pose parameters. First, we develop a pixel-based body part classifier to segment the human silhouette into different body part sub-regions and extract the primary joints. Second, we convert the distribution of the joints to the feature vector and apply the regression forest to estimate human pose parameters. Third, we apply the temporal constraints mechanism to find the best human pose parameter with the minimum estimation error. In experiments, we show that our system can operate in real-time with sufficient accuracy.

关键词： Index Terms-Motion capturing random forest classifier regression forest.

Guest Editorial:Intelligent Video Surveillance and Related Technologies

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2017年第2期15卷 113-114页

作者： chung-lin huang Cheng-Chang Lien I-Cheng Chang Chih-Yang lin Asia University "chung-Hua University" Dong Hwa University Yuan-Ze University

Due to the increasing demand for developing a secure and smart living environment, the intelligent video surveillance technology has attracted considerable attention. Building an automatic, reliable, secure, and intelligent video surveillance system has spawned large research projects and triggered many popular research topics in several international conferences and workshops recently. This special issue of Journal of ElecWonic Science and Technology （JEST） aims to present recent advances in video surveillance systems which address the observation of people in an environment, leading to a real-time description of their actions and interactions.

关键词： is for been Guest Editorial Intelligent Video Surveillance and Related Technologies of in body that

Current development and future prospects of multi-target assignment problem:A bibliometric analysis review

在线全文

学校读者我要写书评

暂无评论

Defence Technology(防务技术) 2025年第1期43卷 44-59页

作者： Shuangxi Liu Zehuai lin Wei huang Binbin Yan College of Aerospace Science and Engineering National University of Defense TechnologyChangsha410073China Hypersonic Technology Laboratory National University of Defense of TechnologyChangsha410073China School of Astronautics Northwestern Polytechnical UniversityXi'an710072China

The multi-target assignment(MTA)problem,a crucial challenge in command control,mission planning,and a fundamental research focus in military operations,has garnered significant attention over the *** studied across various domains such as land,sea,air,space,and electronics,the MTA problem has led to the emergence of numerous models and *** delve deeper into this field,this paper starts by conducting a bibliometric analysis on 463 Scopus database papers using CiteSpace *** analysis includes examining keyword clustering,co-occurrence,and burst,with visual representations of the *** this,the paper provides an overview of current classification and modeling techniques for addressing the MTA problem,distinguishing between static multi-target assignment(SMTA)and dynamic multi-target assignment(DMTA).Subsequently,existing solution algorithms for the MTA problem are reviewed,generally falling into three categories:exact algorithms,heuristic algorithms,and machine learning ***,a development framework is proposed based on the"HIGH"model(high-speed,integrated,great,harmonious)to guide future research and intelligent weapon system development concerning the MTA *** framework emphasizes application scenarios,modeling mechanisms,solution algorithms,and system efficiency to offer a roadmap for future exploration in this area.

关键词： Multi-target assignment Offensive and defensive confrontation Cooperative operation Modeling mechanism Solution algorithm CiteSpace analysis

Real-Time Hand Motion Parameter Estimation with Feature Point Detection Using Kinect

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2014年第4期12卷 429-433页

作者： Chun-Ming Chang Che-Hao Chang chung-lin huang the Department of Applied Informatics and Multimedia Asia University the Department of Informatics and Multimedia Asia University

This paper presents a real-time Kinect- based hand pose estimation method. Different from model-based and appearance-based approaches, our approach retrieves continuous hand motion parameters in real time. First, the hand region is segmented from the depth image. Then, some specific feature points on the hand are located by the random forest classifier, and the relative displacements of these feature points are transformed to a rotation invariant feature vector. Finally, the system retrieves the hand joint parameters by applying the regression functions on the feature vectors. Experimental results are compared with the ground truth dataset obtained by a data glove to show the effectiveness of our approach. The effects of different distances and different rotation angles for the estimation accuracy are also evaluated.

关键词： Hand motion Kinect parameterestimation random forest regression function.

Quantification of Cranial Asymmetry in Infants by Facial Feature Extraction

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2014年第4期12卷 410-414页

作者： Chun-Ming Chang Wei-Cheng Li chung-lin huang Pei-Yeh Chang the Department of Applied Informatics and Multimedia Asia University the Department of Electrical Engineering National Tsing Hua University the Department of Pediatric Surgery Chang Gung Memorial Hospital

In this paper, a facial feature extracting method is proposed to transform three-dimension （3D） head images of infants with deformational plagiocephaly for assessment of asymmetry. The features of 3D point clouds of an infant＇s cranium can be identified by local feature analysis and a two-phase k-means classification algorithm. The 3D images of infants with asymmetric cranium can then be aligned to the same pose. The mirrored head model obtained from the symmetry plane is compared with the original model for the measurement of asymmetry. Numerical data of the cranial volume can be reviewed by a pediatrician to adjust the treatment plan. The system can also be used to demonstrate the treatment progress.

关键词： Cranial asymmetry deformationalplagiocephaly facial feature image registration.

Gas-Solid Flow,Combustion Characteristics,and Gas Emissions in a 75 t/h CFB Boiler Based on the CPFD Method

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2025年第1期34卷 323-336页

作者： huang Xiankun BAI Zhang ZHU Xiaoli WANG Shuoshuo MU lin GONG Liang College of New Energy China University of Petroleum(East China)Qingdao 266580China Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education School of Energy and Power EngineeringDalian University of TechnologyDalian 116024China

A 3D simulation using Computational Particle Fluid Dynamics(CPFD)methods was used to calculate coal combustion in a 75 t/h industrial-scale circulating fluidized bed(CFB)*** characteristics,gas-solid flow characteristics,and gaseous pollutant emissions of CFB boilers from combustion ignition to stable operation were systematically evaluated in this *** show that the temperature distribution is relatively uniform throughout the *** the combustion process unfolds within the boiler,the gas composition curve strikingly portrays the inverse correlation between CO_(2)and O_(2)*** the combustion reaction progresses,it becomes evident that the concentration of CO_(2)progressively increases,while the concentration of O_(2)concurrently *** inverse relationship underscores the fundamental combustion reaction,where carbon-based fuels react with oxygen to produce carbon dioxide and release ***,a comprehensive analysis has revealed that,from ignition to stable combustion,both nitric oxide(NO)and sulfur dioxide(SO_(2))emissions exhibit a declining *** reduction in pollutant generation is attributed to the improvement in combustion *** complete combustion leads to lower levels of unburned hydrocarbons,which are prone to NO ***,the sulfur content in the fuel is more efficiently oxidized to sulfur trioxide(SO_(3))or bound in sulfates,reducing SO_(2)*** steady state in the simulation,the SO_(2)mass flow rate varies significantly with the furnace height,gradually increasing from 0.07 kg·s^(-1)at 4 m at the bottom of the furnace to a peak of 0.078 kg·s^(-1)at 8 m in the center,and then decreasing to 0.06 kg·s^(-1)at 20m at the top of the furnace.

关键词： circulating fluidized bed particle flow combustion CPFD modeling

Effects of maternal feeding of clofibrate on hepatic fatty acid metabolism in suckling piglet

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2025年第1期16卷 424-440页

作者： Jinan Zhao Brandon Pike Feng Wang lin Yang Paige Meisner Yanling huang Jack Odle Xi lin Laboratory of Developmental Nutrition Department of Animal ScienceNorth Carolina State UniversityRaleighNC 27695USA Sales Department Zinpro CorporationEden PrairieMN 55344USA Extension Agent NC State UniversityN.C.Cooperative Extension-Northampton County Center9495 NC Highway 305PO Box 636JacksonNC 27845USA Key Laboratory of Animal Science of State Ethnic Affairs Commission Southwest Minzu UniversityChengdu 610041People’s Republic of China

Background Energy deficiency is a leading cause of the high pre-weaning mortality of neonatal piglets in the swine ***,optimal energy metabolism is of crucial importance for improving the survivability of neonatal *** effective utilization of milk fat as primary energy is indispensably *** Pregnant sows(n=27)were randomly assigned into 3 *** treatment received a standard diet(3,265 kcal ME/kg)supplemented with either 0,0.25%or 0.5%clofibrate(w/w)from d 107 of gestation to d 7 of *** effects of maternal clofibrate on their milk fatty acid(FA)and performance of the piglets were *** evaluations were performed via measuring sow productive performance,milk FA composition,and hepatic FA oxida-tion of the piglets at birth and d 1,7,14 and 19 after *** Maternal supplementation of clofibrate had no effect on reproductive performance of the sows at farrowing and weaning(P>0.05).However,the mortality at weaning was reduced for piglets from sows with 0.25%of clofi-brate,and the average weekly(and daily)gain was higher in piglets from sows that received clofibrate than sows without clofibrate in the first week(P<0.0001).Maternal clofibrate increased percentage of milk C12:0 and C14:0 FAs but decreased C18:2 and n-6 polyunsaturated *** clofibrate also increased plasma ketone body levels and hepatic FA oxidation measured at the first day of birth,but the increase was not detected in piglets on d 7,14 or *** was not detected in milk collected from the clofibrate-treated *** percentage of FA oxidation decreased,and the percentage of FA esterification increased with increasing in postnatal *** carni-tine increased FA oxidation regardless of succinate dehydrogenase inhibition,and the increase had no effect on FA *** Maternal supplementation of clofibrate during late gestation and early lactation increases hepatic FA oxidative metabolism at birth and imp

关键词： Clofibrate Hepatic fatty acid oxidation and metabolism Newborn pigs Postnatal age PPARα

Biisoindolylidene solvatochromic fluorophores: Synthesis and photophysical properties

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2025年第2期36卷 394-399页

作者： Xiaoyu Chen Jiahao Hu Jingyi lin Haiyang huang Changqing Ye Hongli Bao College of Chemistry Fuzhou University State Key Laboratory of Structural Chemistry Key Laboratory of Coal to Ethylene Glycol and Its Related TechnologyCenter for Excellence in Molecular SynthesisFujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fujian College University of Chinese Academy of SciencesFuzhou 350002China dUniversity of Chinese Academy of Sciences

Environment-sensitive fluorescent probes are commonly utilized in various fields, including fluorescence sensing and imaging. This paper describes the synthesis and photophysical properties of a novel class of solvatochromic fluorophores that incorporate biisoindolylidene as the core backbone. This study investigates the structure-property relationships of these newly developed fluorophores. The central biisoindolylidene acts as an efficient electron acceptor, and by modifying the aryl ring substituent at the 3,3 position, the photophysical properties of the fluorophores can be significantly enhanced, particularly in terms of photoluminescence quantum efficiency. Furthermore, when an electron-donor group replaces the aryl ring at the 3,3 position, intriguing solvatochromic behavior is observed. This leads to a red-shift in the maximum emission wavelength and an increase in the Stokes shift with increasing solvent polarity. In solvent dimethyl sulfoxide(DMSO), the maximum emission wavelength can reach up to 750 nm,with a Stokes shift of approximately 150 nm. Finally, the potential application of the fluorophore in the detection of volatile acids is explored in a preliminary manner.

关键词： Acid sensitive Biisoindolylidene Electron receptor New fluorophores Solvatochromic