This article shows a way of using a stereo vision system as a logical sensor to perform mobile robot navigation tasks such as obstacle avoidance. We describe our system, from which the implementation of a task describ...
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In robot trajectory planning, finding the minimumjerk joint trajectory is a crucial issue in robotics because mostrobots are asked to perform a smooth trajectory. Jerk, the third derivative of joint position of a tra...
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An autonomous robot rover has been designed and developed. The proposed robot rover is capable of self-localization and self-exploration of a room or an area inside a building. Self-driving and self-navigating in unkn...
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ISBN:
(纸本)9781538635520
An autonomous robot rover has been designed and developed. The proposed robot rover is capable of self-localization and self-exploration of a room or an area inside a building. Self-driving and self-navigating in unknown environments, our robot constantly scans its surrounding, incrementally and dynamically constructing a global map of the visited room. Immediately after it detects an obstacle or an obstruction, the robot car does not only stop or diverge its route in order to avoid crashing into it, but also marks its location on the map as dangerously hazard. All unoccupied spaces are registered as a safe path. While exploring, the robot is programmed to take a large number of photographs of its surrounding, which includes multiple views of each scene from multiple different angles. These images collected are used to create a three-dimensional model of the interior of the room by photogrammetric methods. In addition to a general exploration of desired regions, a robot may be presented with a selected target object. It must then chooses its own path to locate the object and to circle around it in order to take many photographs of it from all directions and to create a corresponding 3D model.
A fuzzy evolutionary algorithm (FEA) is presented by systematically integrating fuzzy expert systems with evolutionary algorithms in this paper. Both computer experiments and applications demonstrate that fuzzy evolut...
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A fuzzy evolutionary algorithm (FEA) is presented by systematically integrating fuzzy expert systems with evolutionary algorithms in this paper. Both computer experiments and applications demonstrate that fuzzy evolutionary algorithms can generally search for optimal solutions faster and more effectively than standard genetic algorithms. As a specific application, a FEA is applied to automatic robot trajectory generation without using inverse kinematics. An example is given to show that a trajectory of a 7 degree of freedom robot can be automatically generated using the proposed FEA.
Fire protection is a very important issue in social security. An effective fire detection system, which can early detect fire and alarm warning, is necessary. Visual fire detection is useful in conditions, in which co...
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This paper describes the architecture of a low cost autonomous/guided mobile robot This robot is being developed at Indian Institute of Information Technology (Allahabad, India) as a part of a research for the use of ...
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An F-15 bulkhead is to be inspected by a computer system employing television cameras for vision and robot arms with tactile sensors for precise measurements. The system requires a suitable model of the object to be i...
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Recent advancements in laser and visible light sensor technology allows for the collection of photorealistic 3D scans of large scale spaces. This enables the technology to be used in real world applications such as cr...
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ISBN:
(纸本)9780769531533
Recent advancements in laser and visible light sensor technology allows for the collection of photorealistic 3D scans of large scale spaces. This enables the technology to be used in real world applications such as crime scene investigation. The 3D models of the environment obtained with a 3D scanner capture visible surfaces but do not provide semantic information about salient features within the captured scene. Later processing must convert these raw scans into salient scene structure. This paper describes ongoing research into the generation of semantic data from the 3D scan of a crime scene to aid forensic specialists in crime scene investigation and analysis.
The computervision involves many modeling problems with preventing noise caused by disturbance and sensing unit conditions. In order to improve computervision system performance, a robust modeling technique must be ...
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ISBN:
(纸本)9781728165417
The computervision involves many modeling problems with preventing noise caused by disturbance and sensing unit conditions. In order to improve computervision system performance, a robust modeling technique must be developed for essential models in the system. The random sample consensus (RANSAC) and least median of squares (LMedS) algorithm have been widely applied in such issues. However, the performance deteriorates as the noise ratio increases and the modeling time for algorithms tends to increase in industrial applications. As an effective technique, we proposed a new fuzzy RANSAC method based on reinforcement learning concept for robust modeling. In this study, we proposed a new technique for the fuzzy RANSAC in order to improve learning performance in initial learning stage based on weighted modeling technique. Through modeling synthetic nonlinear data and camera homography experiments, the performance of the technique was evaluated. Their results found the proposed technique to be promising for improving modeling performance in initial learning stage.
In this paper, a new scheme for pose estimation in vision system is presented and evaluated on a serial robot. A nonlinear observer is proposed for online estimation of the deviations of the embedded camera w.r.t the ...
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ISBN:
(纸本)9781509021826
In this paper, a new scheme for pose estimation in vision system is presented and evaluated on a serial robot. A nonlinear observer is proposed for online estimation of the deviations of the embedded camera w.r.t the ground reference without knowledge of the geometric features of the scene. This observer is based on high-gain strategy. The presented results consist in using feature and observation scheme to guarantee the observability and efficiency of the estimation. Experimentation results, which are the first of such observers, are presented in a controlled environment of a KUKA robot.
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