检索结果-内蒙古大学图书馆

Proceedings of SPIE - The International Society for Optical Engineering 1996年 2904卷 178-182页

作者： Viitanen, Jouko O. Siirtola, Harri Stanek, Zbigniev VTT Automation Tampere Finl

ISBN: (纸本)0819423068;9780819423061

Robust range estimation is one of the most important tasks in mobile robotics. This paper presents a new optical arrangement for utilizing the previously known 'depth from defocus' principle. The arrangement makes it possible to apply standard video lenses and camera modules for making a compact range camera system. Real-time processing is made possible with a single-board DSP card.

关键词： Mobile robots

来源：评论

学校读者我要写书评

暂无评论

Integration of image/video understanding engine into 4D/RCS architecture for intelligent perception-based behavior of robots in real-world environments

Integration of image/video understanding engine into 4D/RCS ...

引用

Conference on intelligent robots and computer vision XXII - algorithms, techniques and Active vision

作者： Kuvich, G Smart Computer Vision Systems (United States)

ISBN: (纸本)081945561X

To be completely successful, robots need to have reliable perceptual systems that are similar to human vision. It is hard to use geometric operations for processing of natural images. Instead, the brain builds a relational network-symbolic structure of visual scene, using different clues to set up the relational order of surfaces and objects with respect to the observer and to each other. Feature, symbol, and predicate are equivalent in the biologically inspired Network-Symbolic systems. A linking mechanism binds these features/symbols into coherent structures, and image converts from a "raster" into a "vector" representation. View-based object recognition is a hard problem for traditional algorithms that directly match a primary view of an object to a model. In Network-Symbolic Models, the derived structure, not the primary view, is a subject for recognition. Such recognition is not affected by local changes and appearances of the object as seen from a set of similar views. Once built, the model of visual scene changes slower then local information in the visual buffer. It allows for disambiguating visual information and effective control of actions and navigation via incremental relational changes in visual buffer. Network-Symbolic models can be seamlessly integrated into the NIST 4D/RCS architecture and better interpret images/video for situation awareness, target recognition, navigation and actions.

关键词： image video understanding network symbolic systems active vision UGV 4D/RCS

来源：评论

学校读者我要写书评

暂无评论

Self-calibration algorithms for cameras and laser range finders

Self-calibration algorithms for cameras and laser range find...

引用

Conference on intelligent robots and computer vision XXII - algorithms, techniques and Active vision

作者： Zhang, QL Pless, R Washington Univ Dept Comp Sci & Engn St Louis MO 63130 USA

ISBN: (纸本)081945561X

Autonomous systems that navigate through unknown and unstructured environments must solve the egomotion estimation problem. Fusing the information from many different sensors makes this motion estimation more stable, but requires that the relative position and orientation of these sensors be known. Self-calibration algorithms are the most useful for this calibration problem because the do not require any known feature in the environment and can be used during system operation. Here we give geometric constraints, the coherent motion constraints, that allow a framework for the development of self-calibration algorithms for a heterogeneous sensor system (such as cameras, laser range finders, and odometry). If, for all sensors, a conditional probability density function can be defined to relate sensor measurements to the sensor motion, then the coherent motion constraints allows a maximum likelihood formulation of the sensor calibration problem. We present complete algorithms here for the case of a camera and laser range finder, in the case of both discrete and differential motions.

关键词： Sensors Cameras Calibration Motion estimation Laser range finders Motion measurement Imaging systems Algorithm development robots Sensor calibration

来源：评论

学校读者我要写书评

暂无评论

techniques FOR HIGH-PERFORMANCE ANALOG NEURAL NETWORKS 10

TECHNIQUES FOR HIGH-PERFORMANCE ANALOG NEURAL NETWORKS

引用

CONF ON intelligent robots AND computer vision 10 : NEURAL, BIOLOGICAL, AND 3-D METHODS

作者： CASASENT, D NEIBERG, L NATARAJAN, S Carnegie Mellon Univ. (United States)

ISBN: (纸本)0819407453

We consider analog neural network implementations (using VLSI or optical technologies) with limited accuracy and various noise and nonlinearity error sources. algorithms and techniques to achieve high performance (good recognition P'_c% and large storage capacity) on such systems are considered. The adaptive clustering neural net (ACNN) and robust Ho-Kashyap (HK-2) associative processor (AP) are the neural networks considered in detail.

关键词： Neurons Analog electronics Neural networks Very large scale integration computer programming Quantization computer vision technology Machine vision Robot vision robots

来源：评论

学校读者我要写书评

暂无评论

AN IMPROVING VISIBILITY METHOD FOR UNDERWATER robots 12

AN IMPROVING VISIBILITY METHOD FOR UNDERWATER ROBOTS

引用

12th Conference on intelligent robots and computer vision: algorithms and techniques

作者： LIU, SQ XIA, YX FENGPING, JB WAWG, TL GONG, ZB ACAD SINICA ANHUI INST OPT & FINE MECHHEFEI 230031PEOPLES R CHINA

ISBN: (纸本)0819413208

Fov improving underwater visibility for robots. a method using special intervallic series of light pulses, and two acts of emitting and receiving are performed by two special designed optical shutters and the control signals are synchronized delayed is presented. Calculations show that the received backscattering light can be reduced and so the visible distance increased . This method has several advantages which can make it practical for underwater robots and other actual use. Its feasibility has been demonstrated in the experiments. while only in principle as the limitation of the experimental conditions at present. © 1993 SPIE.

关键词： Underwater visibility

来源：评论

学校读者我要写书评

暂无评论

Autonomous robot vision software design using Matlab toolboxes

Autonomous robot vision software design using Matlab toolbox...

引用

Conference on intelligent robots and computer vision XXII - algorithms, techniques and Active vision

作者： Tedder, M Chung, CJ Lawrence Technol Univ Southfield MI 48075 USA

ISBN: (纸本)081945561X

The purpose of this paper is to introduce a cost-effective way to design robot vision and control software using Matlab for an autonomous robot designed to compete in the 2004 intelligent Ground Vehicle Competition (IGVC). The goal of the autonomous challenge event is for the robot to autonomously navigate an outdoor obstacle course bounded by solid and dashed lines on the ground. Visual input data is provided by a DV camcorder at 160 x 120 pixel resolution. The design of this system involved writing an image-processing algorithm using hue, satuaration, and brightness (HSB) color filtering and Matlab image processing functions to extract the centroid, area, and orientation of the connected regions from the scene. These feature vectors are then mapped to linguistic variables that describe the objects in the world environment model. The linguistic variables act as inputs to a fuzzy logic controller designed using the Matlab fuzzy logic toolbox, which provides the knowledge and intelligence component necessary to achieve the desired goal. Java provides the central interface to the robot motion control and image acquisition components. Field test results indicate that the Matlab based solution allows for rapid software design, development and modification of our robot system.

关键词： computer vision algorithms autonomous mobile robots obstacle avoidance fuzzy logic neural networks

来源：评论

学校读者我要写书评

暂无评论

VERTICES AND CORNERS - A MAXIMUM-LIKELIHOOD APPROACH 12

VERTICES AND CORNERS - A MAXIMUM-LIKELIHOOD APPROACH

引用

12th Conference on intelligent robots and computer vision: algorithms and techniques

作者： MALIK, R SO, S STEVENS INST TECHNOL DEPT ELECTR ENGN & COMP SCIHOBOKENNJ 07030

ISBN: (纸本)0819413208

Scenes of polyhedral objects may be accurately represented in 2-D using line sketches. An aim of low level image processing is to generate useful binary images from grey scale images. The binary images generated by enhancement/threshold edge detectors are usually unrefined outlines of the underlying 3-D scene. Such images must be further processed to isolate and identify region boundaries; which, in the case of polyhedra, consist of line segments. The intersection or connection points of these line segments are known as vertices or corners. The work reported in this paper employs a decision theoretic approach to detect vertices in grey scale images.

关键词： Image segmentation computer vision technology Machine vision Robot vision robots Image processing Binary data Silicon 3D image enhancement Sensors

来源：评论

学校读者我要写书评

暂无评论

Kinematics analysis on a spherical robot

Kinematics analysis on a spherical robot

引用

intelligent robots and computer vision XXIII: algorithms, techniques, and Active vision

作者： Xiao, Ai-Ping Sun, Han-Xu Tan, Yue-Sheng Wang, Liang-Qing Hi-Tech Innovation Center Institute of Automation Chinese Academy of Sciences P.O. Box 2728 Beijing 100080 China Automation School Beijing University of Post and Telecommunications Beijing 100876 China Robot Laboratory Beihang University Beijing 10083

Spherical robot, rolling by altering its' barycenter with the inside actuating device, has a spherical or spheroid housing, the motivity of which is supplied by the friction force between the housing and the ground while it rolling. Particular attention is paid to the research of spherical robot in recent years. This paper presents a new omnidirectional bi-driver spherical robot droved by two motors that directly drive the balancer to rotate about two orthogonal axes. The spherical robot is a nonholonomic system with 3 DOF while it rolls on the ground, so the spherical presented in this paper is a nonholonomic under-actuated system, featuring omnidirectional movement, simple configuration, and so on.

关键词： robots

来源：评论

学校读者我要写书评

暂无评论

MORPHOLOGICAL GRANULOMETRIC SHAPE-RECOGNITION IN NOISE 12

MORPHOLOGICAL GRANULOMETRIC SHAPE-RECOGNITION IN NOISE

引用

12th Conference on intelligent robots and computer vision: algorithms and techniques

作者： CHENG, YC DOUGHERTY, ER NO TELECOM NETWORK APPLICAT SYSTROCHESTERNY 14609

ISBN: (纸本)0819413208

Shape classification via linear granulometric moments is examined for patterns suffering varying degrees of edge noise. It is seen that recognition is quite poor even for modest amounts of noise and remains poor even when the patterns are first filtered by a close-open filter. Recognition accuracy is greatly improved, for both unfiltered and filtered images, by employing exterior granulometries. These are constructed by applying the various linear structuring-element sequences to the corresponding linear convex hulls of the noisy patterns. The resulting granulometric distributions are then not corrupted by noise-induced probability mass at the left of the pattern spectrum, thereby greatly diminishing the detrimental effects on the pattern spectrum moments.

关键词： Binary data Image processing computer vision technology Machine vision Robot vision robots Image classification Pattern recognition Image filtering Imaging systems

来源：评论

学校读者我要写书评

暂无评论

Uniqueness of shape recovery based on interreflections

Proceedings of SPIE - The International Society for Optical ...

引用

Proceedings of SPIE - The International Society for Optical Engineering 1996年 2904卷 148-158页

作者： Yang, Jun Zhang, Dili Ohnishi, Noboru Sugie, Noboru RIKEN Ngoya Jpn

ISBN: (纸本)0819423068;9780819423061

We discuss the uniqueness of 3D shape recovery of a polyhedron from a single shading image, and propose an approach to uniquely determine the concave shape solution by using interreflections as a constraint. We show that if interreflection distribution is not considered, multiple convex shape solutions usually exist for a pyramid with three or more visible facets. However, if interreflection distribution is used as a constraint to limits the shape of polyhedron, polyhedral shape can be uniquely determined. Interreflections, which were considered to be deleterious in conventional approaches, are an important constraint for shape-from-shading.

关键词： computer vision

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：