Obstacle

About: Obstacle is a research topic. Over the lifetime, 9517 publications have been published within this topic receiving 94760 citations. The topic is also known as: impediment & barrier.

Traditional Sharing Norms as an Obstacle to Economic Growth in Tribal Societies

Abstract: This first objective of the paper is to achieve a better understanding of the values and the worldview that lead traditional tribal societies to distribute wealth and incomes in manners that are hostile to economic change. The second objective can be persued namely that of identifying ways of getting out of the vicious "traditional" equilibrium in which all change would be blocked owning to the interplay of self-erinforcing forces.

Automatically steered self propelled vehicle

Abstract: A self-propelled vehicle is automatically reversed and steered to a new path if sensors thereon sense an obstruction surrounding an area, or an obstacle in the area so that the vehicle moves forward, rearward and laterally over the entire unobstructed area for treating the same with a tool, such as a brush or agricultural implement

Monocular vision-based obstacle detection/avoidance for unmanned aerial vehicles

Abstract: Robust real-time obstacle detection/avoidance is a challenging problem especially for micro and small aerial vehicles due to the limited number of the on-board sensors due to the battery constraint and low payload. Usually lightweight sensors such as CMOS camera are the best choice comparing with laser or radar sensors. For real-time applications, most studies focus on using stereo cameras to reconstruct a 3D model of the obstacles or to estimate their depth. Instead, in this paper, a method that mimics the human behavior of detecting the state of the approaching obstacles using single camera is proposed. During the flight, this method is able to detect the changes of the size area of the obstacles. First, the method detects the feature points of the obstacles, and then extracts the obstacles that has probability of getting close. In addition, by comparing the changes in the area ratios of the obstacle in the image sequence, the method can decide if it is obstacle or not. Finally, by estimating the obstacle 2D position in the image and combining with the tracked waypoints, the UAV can take the action of avoidance.

Obstacle detection apparatus

Abstract: There is provided an obstacle detection apparatus for detecting an obstacle based on an image of periphery of a vehicle and a distance to an obstacle present in the vehicle's periphery The apparatus includes distance determining means 3 for determining, in association with traveling of the vehicle along a direction, a distance to the obstacle present in a direction perpendicular to the vehicle traveling direction, image inputting means 2 for obtaining a peripheral image having a view angle including the obstacle, subject-vehicle position specifying means 4 for sequentially specifying a present position of the vehicle which changes in association the traveling of the vehicle, first-plane setting means 5 for setting, as a first plane, a face of the obstacle which extends perpendicular to the horizontal plane and extends, at the same time, along the traveling direction of the vehicle, plane-edge estimating means 6 for estimating an edge of the first plane relative to the vehicle moving direction, based on the distance and the position of the vehicle, image recognition area setting means 7 for setting, as an image recognition area, an area included in the peripheral image and including the plane edge, image recognizing means 8 for image-recognizing a shape characteristics of the obstacle in the image recognition area from the peripheral image, and three-dimensional shape recognizing means 9 for recognizing the obstacle three-dimensionally, based on the first plane and result of the image recognition made by the image recognizing means 8