نتایج جستجو برای: complex obstacle
تعداد نتایج: 803452 فیلتر نتایج به سال:
Previous research found that a patient with cortical blindness (homonymous hemianopia) was able to successfully avoid an obstacle placed in his blind field, despite reporting no conscious awareness of it [Striemer, C. L., Chapman, C. S., & Goodale, M. A., 2009, PNAS, 106(37), 15996-16001]. This finding led to the suggestion that dorsal stream areas, that are assumed to mediate obstacle avoidanc...
This paper describes a novel reactive obstacle avoidance approach for mobile robot navigation in unknown and dynamic environment. This approach is developed based on the “situated-activity paradigm” and a “divide and conquer” strategy which steers the robot to move among unknown obstacles and towards a target without collision. The proposed approach entitled the Virtual Semi-Circles (VSC). The ...
This paper uses a configuration space ( -space) based method to compute interference-free configuration for stacking polyhedral sheet metal parts. This work forms the interference analysis module of a stacking planner developed by us. Parts in a stack should not interfere with each other and should also satisfy stability, grasping, and stacking plan feasibility related constraints. We present t...
This paper presents a fast obstacle detection (OD) system based on stereo vision for Unmanned Ground Vehicle (UGV) navigation in unstructured environment. In order to make the UGV adaptable to more complex terrains, we propose a new estimation method of the Main Ground Disparity (MGD) from the V-disparity images. Then by comparing the disparity of the MGD with local 3D reconstruction, a Coarse-...
The increasing number of knowledge-based systems that build on a Bayesian belief network or influence diagram acknowledge the usefulness of these frameworks for addressing complex real-life problems. The usually large number of probabilities and utilities required for their application, however, is often considered a major obstacle. The use of qualitative abstractions may to some extent remove ...
The Rayleigh conjecture on the representation of the scattered field in the exterior of an obstacle D is widely used in applications. However this conjecture is false for some obstacles. AGR introduced the Modified Rayleigh Conjecture (MRC). In this paper we present a version of the MRC based on an optimal choice of sources. The method is implemented and tested for various 2D and 3D obstacles i...
Syntactically complex sentences constitute an obstacle for some people with Autistic Spectrum Disorders. This paper evaluates a set of simplification rules specifically designed for tackling complex and compound sentences. In total, 127 different rules were developed for the rewriting of complex sentences and 56 for the rewriting of compound sentences. The evaluation assessed the accuracy of th...
The degree of coherence function a light beam could be used for optical encryption, robust imaging, and other purposes. However, recent works demonstrated that it has puny self-reconstruction ability gets worse as the obstacle is further away from source. In this manuscript, we propose method by which, with help only introduction cross-phase structure in function, significantly enhanced. perfor...
Amongst the many stimuli orienting the growth of plant roots, of critical importance are the touch signals generated as roots explore the mechanically complex soil environment. However, the molecular mechanisms behind these sensory events remain poorly defined. We report an impaired obstacle-avoiding response of roots in Arabidopsis lacking a heterotrimeric G-protein. Obstacle avoidance may uti...
Abstract Mobile robots can replace rescuers in rescue and detection missions complex unstructured environments draw the interest of many researchers. This paper presents a novel six-wheeled mobile robot with reconfigurable body self-adaptable obstacle-climbing mechanisms, which reconfigure itself to three locomotion states realize advantages terrain adaptability, obstacle-crossing ability, port...
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