In this paper it is shown that simple, low-level motion cues, inspired by the visual navigation of flying insects, can be used to provide a mobile robot with the ability to traverse various corridor environments. Distances to the walls of the corridor and to potential obstacles are measured using the apparent angular velocity of patches in the image and the known motion of the robot.

The corridor allocation problem (CAP) seeks the effective placement of given facilities in two parallel rows on opposite sides of a central corridor. The placement of the facilities in both the rows starts from the same level and no gap is allowed between two facilities of a row. The CAP is formulated here as a nonlinear bi-objective optimization problem, in which both the overall flow cost amo...

A vision-based approach to obstacle avoidance for autonomous land vehicle (ALV) navigation in indoor environments is proposed. The approach is based on the use of a pattern recognition scheme, the quadratic classifier, to find collision-free paths in unknown indoor corridor environments. Obstacles treated in this study include the walls of the corridor and the objects that appear in the way of ...

The present work considers corridor–following maneuvers for nonholonomic mobile robots, guided by sensory data acquired by panoramic cameras. The panoramic vision system provides information from an environment with textured walls to the motion control system, which drives the robot along a corridor. Panoramic cameras have a 360 visual field, a capability that the proposed control methods explo...

PURPOSE The clinical target volume (CTV) of post-operative radiotherapy for soft tissue sarcoma of the limbs conventionally includes the whole of the transverse cross-section of the affected anatomical compartment. In the anterior thigh sartorius appears to lie within its own fascial compartment and can be safely excluded. We investigated the potential impact of omitting sartorius from the ante...

Fifty Nerodia sipedon living along two kilometers of an urban stream in northeastern Pennsylvania were radiotracked over three activity seasons, yielding more than 2520 relocations. Half the stream length is urbanized, flowing through a city park at the head of the study area and an industrial area at the downstream end; the half between is relatively natural, flowing through a conservation cor...

A primary purpose of this opening address for the winter session of the Hospital is to welcome the new students. I sometimes hear of medical students in midstream wondering whether they have chosen the right profession or more definitely stating that they have made a mistake. This often arises from exhaustion by the scientific pressures of the first three years, and I can only say that it is ra...

Currently different categories of traffic analysis tools exist. Among them simulation models can be marked as one of the most powerful approach to do traffic analysis researches. In classical literature simulation models are divided on macroscopic, mesoscopic and microscopic models. Microscopic and macroscopic modelling are well known and widely used, but both of them have disadvantages and lim...

Given a set of n colored points with a total of m > 3 colors in 2D, the problem of identifying the smallest color-spanning object is studied. We have considered two different shapes: (i) corridor, and (ii) rectangle of arbitrary orientation. Our proposed algorithm identifies the narrowest color-spanning corridor in O(n2 log n) time using O(n) space. Our proposed algorithm for identifying minimu...