Download or read book High speed Obstacle Detection for Automated Highway Applications written by John A. Hancock and published by . This book was released on 1997 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Highway obstacle detection is a challenging problem. Highways present an unknown and dynamic environment with real-time constraints. In addition, the high speeds of travel force a system to detect objects at long ranges. Although there are a number of methods that can successfully detect moving vehicles, the more difficult problem of finding small, static road debris such as tires or crates remains unsolved. Systems such as the Automated Highway System (AHS) which demand high levels of safety are not feasible unless these critical problems are addressed. Although the problem of detecting static obstacles has been tackled in both the cross-country and indoor mobile robot navigation literature, these systems have operated at low speeds (5-10 mph or less) and short range. This thesis will improve on the current state-of-the-art, by demonstrating how small static road debris can be safely detected at long distances and high speeds. In particular, it will focus on using two sensor modalities: laser reflectance and stereo vision. Laser reflectance, to our knowledge, has not been used for obstacle detection before. The thesis will show that reliable detection can be achieved by using the right methods (sensitive enough) and the right models (no more complicated than necessary) for both road and sensor. We will develop two detection systems, laser and stereo-based, which can detect 20 cm high obstacles at 60 meters. The first system uses laser intensity to provide a more direct means of measuring surface orientation than traditional laser range-based processing: vertical obstacles should provide stronger laser returns than the horizontal road. The second system proposed is a predictive, model- based stereo method. Accurate modeling of the road and CCD sensor will enable obstacle detection without expensive 3-D reconstruction."
Download or read book Robot Intelligence written by Honghai Liu and published by Springer Science & Business Media. This book was released on 2010-08-05 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robot intelligence has become a major focus of intelligent robotics. Recent innovation in computational intelligence including fuzzy learning, neural networks, evolutionary computation and classical Artificial Intelligence provides sufficient theoretical and experimental foundations for enabling robots to undertake a variety of tasks with reasonable performance. This book reflects the recent advances in the field from an advanced knowledge processing perspective; there have been attempts to solve knowledge based information explosion constraints by integrating computational intelligence in the robotics context.
Download or read book Computer Vision ACCV 2020 written by Hiroshi Ishikawa and published by Springer Nature. This book was released on 2021-02-25 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: The six volume set of LNCS 12622-12627 constitutes the proceedings of the 15th Asian Conference on Computer Vision, ACCV 2020, held in Kyoto, Japan, in November/ December 2020.* The total of 254 contributions was carefully reviewed and selected from 768 submissions during two rounds of reviewing and improvement. The papers focus on the following topics: Part I: 3D computer vision; segmentation and grouping Part II: low-level vision, image processing; motion and tracking Part III: recognition and detection; optimization, statistical methods, and learning; robot vision Part IV: deep learning for computer vision, generative models for computer vision Part V: face, pose, action, and gesture; video analysis and event recognition; biomedical image analysis Part VI: applications of computer vision; vision for X; datasets and performance analysis *The conference was held virtually.
Download or read book Road Vehicle Automation written by Gereon Meyer and published by Springer. This book was released on 2014-06-07 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume covers all relevant aspects of road vehicle automation including societal impacts, legal matters, and technology innovation from the perspectives of a multitude of public and private actors. It is based on an expert workshop organized by the Transportation Research Board at Stanford University in July 2013. The target audience primarily comprises academic researchers, but the book may also be of interest to practitioners and professionals. Higher levels of road vehicle automation are considered beneficial for road safety, energy efficiency, productivity, convenience and social inclusion. The necessary key technologies in the fields of object-recognition systems, data processing and infrastructure communication have been consistently developed over the recent years and are mostly available on the market today. However, there is still a need for substantial research and development, e.g. with interactive maps, data processing, functional safety and the fusion of different data sources. Driven by stakeholders in the IT industry, intensive efforts to accelerate the introduction of road vehicle automation are currently underway.
Download or read book Obstacle Detection for High Speed Ground Transportation written by Daniel E. Magnus and published by . This book was released on 1970 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intelligent Transportation Systems written by Marten Johannes De Vries and published by SPIE-International Society for Optical Engineering. This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Automated Highway Systems written by Petros Ioannou and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experts address some of the main issues and uncertainties associated with the design and deployment of Automated Highway Systems (AHS). They discuss new AHS concepts, technology, and benefits, as well as institutional, environmental, and social issues - concerns that will affect dramatically the operation of the current highway system from both the vehicle and infrastructure points of view.
Download or read book Advances in Technological Applications of Logical and Intelligent Systems written by Germano Lambert Torres and published by IOS Press. This book was released on 2009 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains papers on relevant technological applications of logical methods and some of their extensions and gives an idea of some applications of logical methods to numerous problems, including relevant concepts and results, in particular those related to paraconsistent logic.
Download or read book Public Roads written by and published by . This book was released on 1999 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A High performance Stereo Vision System for Obstacle Detection written by Todd A. Williamson and published by . This book was released on 1998 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Intelligent vehicle research to date has made great progress toward true autonomy. Integrated systems for on-road vehicles, which include road following, headway maintenance, tactical-level planning, avoidance of large obstacles, and inter-vehicle coordination have been demonstrated. One of the weakest points of current automated cars, however, is the lack of a reliable system to detect small obstacles on the road surface. In order to be useful at highway speeds, such a system must be able to detect small (1̃5cm) obstacles at long ranges (1̃00m), with a cycle rate of at least 2 Hz. This dissertation presents an obstacle detection system that uses trinocular stereo to detect very small obstacles at long range on highways. The system makes use of the apparent orientation of surfaces in the image in order to determine whether pixels belong to vertical or horizontal surfaces. A simple confidence measure is applied to reject false positives introduced by image noise. The system is capable of detecting objects as small as 14cm high at ranges well in excess of 100m. The obstacle detection system described here relies on several factors. First, the camera system is configured in such a way that even small obstacles generate detectable range measurements. This is done by using a very long baseline, telephoto lenses, and rigid camera mounts. Second, extremely accurate calibration procedures allow accurate determination of these range differences. Multibaseline stereo is used to reduce the number of false matches and to improve range accuracy. Special image filtering techniques are used to enhance the very weak image textures present on the road surface, reducing the number of false range measurements. Finally, a technique for determining the surface orientation directly from stereo data is used to detect the presence of obstacles. A system to detect obstacles is not useful if it does not run in near real-time. In order to improve performance, this dissertation includes a detailed analysis of each stage of the stereo algorithm. An efficient method for rectifying images for trinocular stereo is presented. An analysis of memory usage and cache performance of the stereo matching loop has been performed to allow efficient implementation on systems using general-purpose CPUs. Finally, a method for efficiently determining surface orientation directly from stereo data is described."
Download or read book Report on the High Speed Ground Transportation Act written by United States. Department of Transportation and published by . This book was released on with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transputer Applications and Systems 93 written by Reinhard Grebe and published by IOS Press. This book was released on 1993 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings -- Parallel Computing.
Download or read book Report on the High Speed Ground Transportation Act of 1965 written by and published by . This book was released on 1971 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by United States. Department of Transportation and published by . This book was released on with total page 1078 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Autonomous Navigation in Dynamic Environments written by Christian Laugier and published by Springer. This book was released on 2007-10-14 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a foundation for a broad class of mobile robot mapping and navigation methodologies for indoor, outdoor, and exploratory missions. It addresses the challenging problem of autonomous navigation in dynamic environments, presenting new ideas and approaches in this emerging technical domain. Coverage discusses in detail various related challenging technical aspects and addresses upcoming technologies in this field.
Download or read book Methods for Reducing Large Speed Differences in Traffic Streams written by Martin R. Parker and published by . This book was released on 1985 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report Department of Transportation written by United States. Department of Transportation and published by . This book was released on 1966 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
