检索结果-内蒙古大学图书馆

International Conference on Intelligent Transportation

作者： S.J. Krotosky S.Y. Cheng M.M. Trivedi Computer Vision and Robotics Research Laboratory University of California San Diego CA USA

vision based systems for "smart" airbag systems aim to give precise information about occupant pose and location. This information can be used to make intelligent airbag deployment decisions. This paper reviews both a stereo-based and long wave infrared-based system for "smart" airbag deployment. The algorithms are systematically evaluated through extensive real-time occupant tests. Data for both algorithms is simultaneously collected and evaluated for viability in an intelligent airbag system. Results of these experimental trials show the feasibility of each video based occupant position analysis system. Advantages and drawbacks of each method are discussed and potential solutions are suggested.

关键词： Face detection Infrared detectors Smart cameras Lighting Information analysis Real time systems System testing Intelligent systems Machine vision Automobiles

来源：评论

学校读者我要写书评

暂无评论

An adaptive scene description for activity analysis in surveillance video

An adaptive scene description for activity analysis in surve...

引用

International Conference on Pattern Recognition

作者： Brendan Morris Mohan Trivedi Computer Vision and Robotics Research Laboratory University of California La Jolla CA USA

ISBN: (纸本)9781424421749

This paper presents an adaptive framework for live video analysis. The activities of surveillance subjects are described using a spatio-temporal vocabulary learned from recurrent motion patterns. The repetitive nature of object trajectories are used to build a topographical map, where nodes are points of interest and the edges correspond to activities, to describe a scene. The graph is learned in an unsupervised manner but is flexible and able to adjust to changes in the environment or other scene variations.

关键词： Layout Surveillance Hidden Markov models Video compression Vocabulary Cameras computer vision Robot vision systems Laboratories Trajectory

来源：评论

学校读者我要写书评

暂无评论

Fast collision detection scheme by recursive decomposition of a manipulator workspace

Fast collision detection scheme by recursive decomposition o...

引用

IEEE International Conference on robotics and Automation (ICRA)

作者： V. Hayward Computer Vision and Robotics Laboratory Department of Electrical Engineering McGill University Quebec Canada

This paper explains a simple method for fast collision detection in manipulator tasks. We show from examples taken in the literature that solutions to this problem can be chosen among a continuum of schemes, according to the method selected for representing the workspace and the robot, and the amount of computations performed before testing a particular trajectory. We then describe a method based on a recursive decomposition of the workspace, also referred to as an octree model, as a good tradeoff for a class of applications.

关键词： Robot programming Manipulators robotics and automation Solids Detectors computer vision Robot vision systems Laboratories Performance evaluation Testing

来源：评论

学校读者我要写书评

暂无评论

Vehicle mounted wide FOV stereo for traffic and pedestrian detection

Vehicle mounted wide FOV stereo for traffic and pedestrian d...

引用

IEEE International Conference on Image Processing

作者： T. Gandhi M.M. Trivedi Computer Vision and Robotics Research Laboratory University of California San Diego CA USA

This paper describes an approach for detecting objects in front of an automobile using wide field of view stereo with a pair of omni cameras. Several configurations are suggested for effective detection of vehicles and pedestrians. The omni cameras are calibrated using sets of parallel lines on a parking lot. The calibration is used to rectify the omni images. Stereo matching is performed on the rectified images to detect other vehicles and pedestrians. Experimental results show promise of detecting these objects on the road.

关键词： Vehicle detection Cameras Roads Stereo vision Object detection computer vision Calibration Motion analysis Robot vision systems Intelligent vehicles

来源：评论

学校读者我要写书评

暂无评论

Analyzing teams of cooperating mobile robots

Analyzing teams of cooperating mobile robots

引用

IEEE International Conference on robotics and Automation (ICRA)

作者： B.R. Donald J. Jennings D. Rus Robotics & Vision Laboratory Computer Science Department Cornell University Ithaca NY USA

Donald (1993) described a manipulation task for cooperating mobile robots that can push large, heavy objects. There, the author asked whether explicit local and global communication between the agents can be removed from a family of pushing protocols. In this paper, the authors answer in the affirmative. They do so by using the general methods of Donald for analyzing information invariants. The authors discuss several measures for the information complexity of the task of pushing with cooperating mobile robots, and they present a methodology for creating new manipulation strategies out of existing ones. The authors develop and analyze synchronous and asynchronous manipulation protocols for a small team of cooperating mobile robots than can push large boxes. The protocols described have been implemented in several forms on the Cornell mobile robots in the authors' laboratory.< >

关键词： Mobile robots Robot kinematics Robot sensing systems Protocols Laboratories Information analysis Friction Manipulator dynamics Robot vision systems computer science

来源：评论

学校读者我要写书评

暂无评论

Streaming face recognition using multicamera video arrays

Streaming face recognition using multicamera video arrays

引用

International Conference on Pattern Recognition

作者： K.S. Huang M.M. Trivedi Computer Vision and Robotics Research (CVRR) Laboratory University of California San Diego USA

We present face recognition schemes based on video streams: the majority decision rule and HMM maximum likelihood (ML) decision rules. PCA type of subspace feature analysis is first applied to the face images in a video segment of a fixed number of frames. The majority decision rule is then applied to PCA recognition results in the video segment. Discrete HMM (DHMM) is also applied to the single-frame recognition sequences. Continuous density HMM (CDHMM) is applied directly to the sequence of PCA feature vectors for ML decision on the video segment in a delayed decision manner. Experimental results are compared between these three schemes in terms of the number of states and Gaussian mixtures of the HMMs. CDHMM-based decision rule achieved a 99% correct recognition rate in average. A geometric interpretation of ML in the feature subspace well explains the observed performances.

关键词： Streaming media Face recognition Hidden Markov models Principal component analysis Image segmentation Lighting Testing computer vision Humans Covariance matrix

来源：评论

学校读者我要写书评

暂无评论

Rapid shallow coastal coral reef mapping using the teardrop system

Rapid shallow coastal coral reef mapping using the teardrop ...

引用

OCEANS 2012 MTS/IEEE Hampton Roads Conference: Harnessing the Power of the Ocean

作者： Corpuz, Francis James Naval Jr., Prospero Capili, Eusebio Jauod, Jaylord Judilla, Roel John Soriano, Maricor Vision and Image Processing Group National Institute of Physics University of the Philippines Diliman Quezon City Philippines Computer Vision and Machine Intelligence Group Department of Computer Science University of the Philippines Diliman Quezon City Philippines Mapua Robotics Center Institutional Laboratory Mgmt Office Mapua Institute of Technology Intramuros Manila Philippines

ISBN: (纸本)9781467308298

We present a rapid shallow coastal reef mapping system using a previously developed inexpensive diver less video capture system coupled with a fast-image mosaicking technique, using an affordable GPS logging device. The system replaces the traditional manta tow system of assessing and monitoring large areas of coastal coral reefs and at the same time provides historical visual record for future references. The system utilizes Teardrop, a hollow, teardrop-shaped that houses a commercial underwater point-and-shoot camera. The camera is set to video mode and captures video of the reef while the Teardrop is being towed by a wooden fishing boat. The resulting video is parsed into frames and mosaicked by using fast image labeling. The approximate location of the mosaicked images is recorded by using an inexpensive GPS logger. The coordinates are embedded on the mosaicked images and overlaid on mapping software such as Google Earth for visual record and spatial information integration. The same points are used to compute for the total distance covered by the capturing process. The whole process from coral reef video capture to mosaicking the images and finally embedding the mosaics in mapping software can be done in as short as 1 day, providing coastal managers and local government units with a tool to rapidly visualize and monitor shallow coral reefs. © 2012 IEEE.

关键词： Mapping

来源：评论

学校读者我要写书评

暂无评论

computer vision for homeland security: a perspective on its promise and pitfalls

Computer vision for homeland security: a perspective on its ...

引用

IEEE Conference on Advanced Video and Signal Based Surveillance (AVSS)

作者： M.M. Trivedi Computer Vision and Robotics Research (CVRR) Laboratory University of California San Diego USA

来源：评论

学校读者我要写书评

暂无评论

Distributed omni-video arrays and digital tele-viewer for customized viewing, event detection and notification

Distributed omni-video arrays and digital tele-viewer for cu...

引用

International Conference on Information Technology: Coding and Computing (ITCC)

作者： M.M. Trivedi K.S. Huang Tarak Gandhi B. Hall K. Harlow Computer Vision and Robotics Research (CVRR) Laboratory University of California San Diego USA

Recent innovations in real-time machine vision, distributed computing, software architectures, and encrypted high-speed networking are expanding the available technology for intelligent camera arrays on televiewing and interactive applications. In this paper we describe research aimed at the realization of a powerful televiewing system using arrays of omnidirectional cameras. The video arrays provide an interactive, real-time, multiresolution televiewing interface to multiple people including physical security and emergency response crews simultaneously. Security measures such as authentication and network encryption are implemented on multiple platforms. Fusion of high-resolution rectilinear image over the omnidirectional image is also carried out. computer vision techniques based on motion analysis are used for detecting interesting events. The televiewing system is verified for the performance as well as physically tested on the Super Bowl 2003 event for crowd detection and traffic monitoring.

关键词： Event detection Cryptography Cameras Power system security Technological innovation Machine vision Distributed computing Software architecture High-speed networks Intelligent networks

来源：评论

学校读者我要写书评

暂无评论

Pedestrian detection with high-resolution event camera

TechRxiv

引用

TechRxiv 2023年

作者： Wzorek, Piotr Kryjak, Tomasz Embedded Vision Systems Group Computer Vision Laboratory Department of Automatic Control and Robotics AGH University of Krakow Poland

Despite the dynamic development of computer vision algorithms, the implementation of perception and control systems for autonomous vehicles such as drones and self-driving cars still poses many challenges. A video stream captured by traditional cameras is often prone to problems such as motion blur or degraded image quality due to challenging lighting conditions. In addition, the frame rate – typically 30 or 60 frames per second – can be a limiting factor in certain scenarios. Event cameras (DVS – Dynamic vision Sensor) are a potentially interesting technology to address the above mentioned problems. In this paper, we compare two methods of processing event data by means of deep learning for the task of pedestrian detection. We used a representation in the form of video frames, convolutional neural networks and asynchronous sparse convolutional neural networks. The results obtained illustrate the potential of event cameras and allow the evaluation of the accuracy and efficiency of the methods used for high-resolution (1280 x 720 pixels) footage. © 2023, CC BY.

关键词： Cameras

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：