The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Powered umbilical ROVs have steadily increased in capabilities and utilization for applications in deep water where they can be readily “flown” to perform inspections and survey projects. But the littoral zone, where surf conditions, insufficient depth, and the hazards of shore proximity present special challenges, remains relatively unexplored. SurfROVer is a battery-operated crawler that is the...
This paper proposes a proof-of-concept for a novel automated indoor/outdoor navigation system. Our proposed method shall enable an object/user equipped to be able to navigate through closed environments using an automatically generated Spatial Map Graph (SMG) with the aid of pre-placed visual markers. The system is robust to dynamically changing complex environments, through adaptive reconfigurations...
Up to the present day, GPS signals are the key component in almost all outdoor navigation tasks of robotic platforms. To obtain the platform pose, comprising the position as well as the orientation, and receive information at a higher frequency, the GPS signals are commonly used in a GPS-corrected inertial navigation system (INS). The GPS is a critical single point of failure, especially for autonomous...
Paper presents a brief idea about drones, their technology, the process to make that technology energy-efficient and can be used for different purposes. Major aim of our prototype is for surveillance of terrifying notions and hidden activities which can be captured in the camera which gives us an aerial view of objects. Our major aim is to increase the flight time of the drone as much as possible...
Due to the sparse distribution of road video surveillance cameras, precise trajectory tracking for hit-and-run vehicles remains a challenging task. Previous research on vehicle trajectory recovery mostly focuses on recovering trajectory with low-sampling-rate GPS coordinates by retrieving road traffic flow patterns from collected GPS information. However, to the best of our knowledge, none of them...
Lane estimation plays a central role for Driver Assistance Systems, therefore many approaches have been proposed to measure its performance. However, no commonly agreed metric exists. In this work, we first present a detailed survey of the current measures. Most of them apply pixel-level benchmarks on camera images and require a time-consuming and fault-prone labeling process. Moreover, these metrics...
In this paper we describe the 3D acquisition component integrated in the Sound of Vision (SoV) system. SoV is a computer vision based sensory substitution device (SSD) for the visually impaired. Its main objective is to provide the users with a 3D representation of the environment around them, conveyed by means of the hearing and tactile senses. One of the biggest challenges for the SoV system is...
Research conducted in the field of localization with passive light, or using the intrinsic properties of light to determine a person's location, has seen increased growth in recent years. Specifically, fluorescent lights have been shown to exhibit distinct frequencies which can be recorded, along with their positions, for future lookup and positioning. Developments have been made in utilizing this...
In today's conditions, parents have to work for home economics. For this reason, it is not always possible for parents to meet their children's needs, to protect them from dangers and to help them. Parents agree with a fee-paying caregiver to ensure that their children's needs are provided. Looking after a child by a caregiver can create a variety of security problems for the mother and the father...
Use of unmanned aerial vehicles is considered as one of the means which performs infrastructure inspection. Since the operation from GPS or the outside is not needed but the method by a quadrotor with a tether can perform the position control of the airframe, it can be used for the inspection of infrastructures, such as a tunnel and a bridge. In this research, it aims to develop and control a camera...
This paper proposes an algorithm to determine the distance between vehicles for a Intelligent Transport System (ITS) using image sensor based visible light communication. Compared to existing algorithms, the proposed algorithm uses two image sensors and thus requires only one LED for distance estimation. Simulations are conducted to verify the performance of the proposed algorithm.
Due to increase the terrorist activities throughout the world, it is very important to control and monitor their activities and quickly execute the required plan accordingly. This paper presents a smart Global Positioning System (GPS) based surveillance robotic system using Raspberry Pi for security application and remote sensing. This robotic system is fully controlled wirelessly via internet web...
Recent smart devices offer technologies that can measure indoor as well as outdoor locations. In the case of outdoor positioning, a global positioning system (GPS) is generally used. There is a limit to the method of using the GPS signal for indoor positioning. A typical indoor positioning method is to use a beacon based on bluetooth low energy (BLE). However, this method has disadvantages that needs...
UAVs (Unmanned Aerial Vehicles) have been widely used in power line inspections, but low autonomous cruise capacity of UAVs requires strict condition for operators and site while landing during UAV power line inspections. This paper presents an autonomous landing control technique for UAVs when charging at the electric towers based on vision positioning method. The proposed system consists of three...
This paper presents an implementation of a system that is autonomously able to find, follow and land on a car moving at 15 km/h. Our solution consists of two parts, the image processing for fast onboard detection of landing platform and the Model Predictive Control tracker for trajectory planning and control. This approach is fully autonomous using only the onboard computer and onboard sensors with...
Recently, UAVs (Unmanned Aerial Vehicles) gain a wider acceptance from many disciplines. One major application is for monitoring and mapping. Flying beyond eye sight autonomously and collecting data over large areas are their obvious advantages. To support a large scale urban city mapping, we have developed a UAV system which can carry a compact digital camera as well as a navigational grade of a...
This paper looks at various technologies and concept solutions to assist with navigation for the visually impaired. It reviews the advantages and challenges that exist today and attempts to propose a concept portable solution. The solution is a mix of commonly available hardware including off the shelf sensors and Arduino microcontroller interfaces with integration capabilities. The goal is to arrive...
This paper presents an alternative navigation tool that can be used in indoor environment. This is due to restrictions on GPS signals that cannot be detected in indoor locations. The work presented here shows the development of an interactive indoor localization system that uses live input video capture and can identify location markers to indicate its current location. In addition, augmented reality...
People with impairment and having difficulties to walk, even impossible to move due to illness, injury, or disability need assistance tool. One assistance tool to help those people is wheelchair. With current technological developments, conventional wheelchair can be improved. Conventional wheelchair which operated by hand cannot be used by people with hand-foot impairment, as well as electric-powered...
In this paper we study a security problem for resource-constrained autonomous systems. We consider a UAV tasked with tracking a reference trajectory, and an attacker capable of compromising the measurements taken at certain sensors. We consider a probabilistic attack model, where the attacker executes denial of service attacks against a subset of sensors based on a Bernoulli process. We assume that...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.