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.
Three projects--a cooking robot, a garment-folding robot, and an integrated household task-management interface for managing multiple robots--demonstrate proof-of-concept prototypes showcasing the future of home robots and their interaction design.
The aim of this paper is to improve the skills of robotic systems in their interaction with nearby objects. The basic idea is to enhance visual estimation of objects in the world through the merging of different visual estimators of the same stimuli. A neuroscience-inspired model of stereoptic and perspective orientation estimators, merged according to different criteria, is implemented on a robotic...
In this paper, we present three human-robot interfaces using a handheld device as a mediator object between a human and a robot, allowing the human to intuitively drive the robot and show it objects. One of the interface is based on a virtual keyboard interface on the iPhone, another is a gesture based interface on the iPhone too and the last one is a Wiimote based interface. They were designed to...
Classical image-based visual servo methods regulate error in the image space and undergo difficulties when the initial and desired robot positions are distant. It is not trivial to introduce constraints in the realized trajectories and to ensure convergence due to the nonlinearity of the system. This paper proposes a trajectory planning scheme based on Probabilistic Roadmaps (PRM) in order to achieve...
‘Saliency map’, a scalar, two-dimensional representation of visual saliency, is at the center of almost all of the existing models of visual attention. Attention is directed toward the most salient location in the saliency map. The mechanism of ‘inhibition of return’ (IOR) suppresses the saliency of recently attended location and thereby enabling the shifts of attention toward different locations...
To control mobile robot BCAR-01 remotely, a teleoperation system is presented with a multiple viewpoints virtual scene of the robot and its worksite. The constructed scene is used to get knowledge of the robot and its working environment, besides the real video feedback from the robot vision system. It can present images in multiple person viewpoints. In a complex task, operators can conveniently...
In this paper, we present a complete framework for autonomous indoor robot navigation. We show that autonomous navigation is possible in indoor situation using a single camera and natural landmarks. When navigating in an unknown environment for the first time, a natural behavior consists on memorizing some key views along the performed path, in order to use these references as checkpoints for a future...
This paper presents a new approach for the classical Markov localization method for mobile robots by using image quality evaluation. Machine learning techniques have been used to obtain the quality of the images. This quality value is used to select the best information source, between odometry and sensor information. Real experiments in different scenarios of the Robocup standard platform league...
We show how a system for video-rate parallel camera tracking and 3D map-building can be readily extended to allow one or more cameras to work in several maps, separately or simultaneously. The ability to handle several thousand features per map at video-rate, and for the cameras to switch automatically between maps, allows spatially localized AR workcells to be constructed and used with very little...
In this paper, we present a tele-meeting system which uses an augmented robot agent as the representation of the remote participant. In this system, we augment a 3D volume video of the remote participant over the on-site robot. The robot agent in this system represents a remote user with camera, microphone, and mobility. Using this robot agent, the remote user and the local user can show their appearances...
In this paper we present an experimental evaluation of automatic robotic assembly of complex planar parts. The torque-controlled DLR light-weight robot, equipped with an on-board camera (eye-in-hand configuration), is committed with the task of looking for given parts on a table, picking them, and inserting them inside the corresponding holes on a movable plate. Visual servoing techniques are used...
Visual servos are inherently inaccurate due to lower resolution of reasonably priced cameras and poor calibration of robot-camera relative position and robot kinematic model. Instead of trying to improve those factors the paper presents an alternative solution in which the grasping operation is aided by force control which accommodates positional inaccuracies. The developed control law utilizes the...
This paper deal with the problem of executing a vision-based task in an unknown environment. During such a task, two unexpected events may occur: the image data loss due to a camera occlusion and the robot collision with obstacles. We first propose a method allowing to compute the visual data when they are totally lost, before addressing the obstacle avoidance problem. Then, we design a sensor-based...
In this paper, we present a mobile robot global positioning system which combines passive RFID and monocular vision. The method is intended to solve the so-called kidnapped robot problem, that is, the problem of estimating the robot pose when it is first booted up or it has been kidnapped and taken to some unknown location. The main novelty of the approach is the use of fuzzy logic to cope with both...
This paper presents an attractive image-based visual servoing approach for eye-in-hand robotic systems. The major contribution of this work is in devising an optimization controller to control the velocity of the camera and GMC (generic model control) is introduced to confirm the output trajectory of the system. Then an adaptive law is proposed to estimate the unknown depth of the feature points of...
This paper presents a teleoperation system to control mobile robot remotely. The system architecture is based on network technology. To get a synthetical knowledge of the robot and its working environment, besides the real video feedback from the robot vision system, a multiple viewpoints virtual scene of the robot and its worksite is constructed. It can present images in first person and third person...
In the recent years visual servo control has become a popular research topic in robotics. Usually, it is applied to fixed-base robotic manipulators working in a structured industrial environment. This paper focuses on developing a visual servo control system for a mobile robot, which operates in an unstructured environment. First, the system hardware and control objective are introduced. Second, the...
One of the most fundamental issues for physical agents (humans, primates, and robots) in performing various kinds of tasks is body representation. Especially during tool-use by monkeys, neurophysiological evidence shows that the representation can be dynamically reconstructed by spatio-temporal integration of different sensor modalities so that it can be adaptive to environmental changes. However,...
Image features represent inputs for different types of visual applications. For visual servoing tasks the chosen features must be stable, accurate and robust. Gradient based algorithms for feature detection are sensitive to noise, illumination change and scale change. Using phase congruency, an image feature detection algorithm is developed based on the local energy model. The performances of the...
An algorithm is proposed to answer the challenges of autonomous corridor navigation and mapping by a mobile robot equipped with a single forward-facing camera. Using a combination of corridor ceiling lights, visual homing, and entropy, the robot is able to perform straight line navigation down the center of an unknown corridor. Turning at the end of a corridor is accomplished using Jeffrey divergence...
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.