We describe a method for visual based robot navigation with a single omni-directional (catadioptric) camera. We show how omni-directional images can be used to generate the representations needed for two main navigation modalities: Topological Navigation and Visual Path Following. Topological Navigation relies on the robot’s qualitative global position, estimated from a set of omni-directional ...

With a panoramic view of the scene, a single omnidirectional camera can monitor the interior and exterior of the vehicle simultaneously. Omni-directional cameras have been shown to produce useful data for determining head gaze orientation from within a vehicle. We examine the issues involved in integrating lane-tracking functions using the same omni-directional camera. We present analysis on th...

Recently, many types of omni-directional cameras have been developed and attracted much attention in a number of different fields. Especially, the multi-camera type of omni-directional camera has advantages of high-resolution and almost uniform resolution for any direction of view. In this paper, an extrinsic camera parameter recovery method for a moving omni-directional multi-camera system (OM...

We developed an OpenMP compiler, called Omni. This paper describes a performance evaluation of the Omni OpenMP compiler. We take two commercial OpenMP C compilers, the KAI GuideC and the PGI C compiler, for comparison. Microbenchmarks and a program in Parkbench are used for the evaluation. The results using a SUN Enterprise 450 with four processors show the performance of Omni is comparable to ...

A lateral vehicle localization method by omni-image analysis is proposed for car driving assistance. The method estimates analytically the position and orientation of a lateral vehicle by utilizing the geometric properties of a circular-shaped wheel image of the lateral car taken by a single omni-camera with a hyperboloidal-shaped mirror. Analytical solutions are made possible for fast computat...

We describe our experience porting the Regensburg implementation of the DD-αAMG solver from QPACE 2 to QPACE 3. We first review how the code was ported from the first generation Intel Xeon Phi processor (Knights Corner) to its successor (Knights Landing). We then describe the modifications in the communication library necessitated by the switch from InfiniBand to Omni-Path. Finally, we present ...

Structural sensing and control is an important application of the DDDAS paradigm. Our work on structural sensing and control has several key aspects, including model reduction, control, simulation, and validation. Motivated by our work on validation using an actual three-storeyed structure, we are developing a comprehensive systems environment, Omni, for macroprogramming sensor networks. While ...

Video analysis and mixed reality (MR) systems, which integrate the virtual world and the real world, are important topics of multimedia research. In this paper, we propose an efficient 3D city construction system from omni video data as a practical application of MR systems. To develop this system, two main methods are proposed for analyzing omni video data. The first one is omniEPI analysis, w...

In recent years, the use of omni-directional cameras has become increasingly more popular in vision systems and robotics. To date, most of the research relating to omnidirectional cameras has focussed on the design of the camera or the way in which to project the omni-directional image to a panoramic view rather than on how to process these images after capture. Typically images obtained from o...

To measure pH in platelet concentrates, blood gas analysers with different calibration principles may be used. In this study, variances observed in pH measurements with two types of blood gas analysers were investigated. pH was measured in crystalloid solutions (platelet additive solution (PAS-II), phosphate-buffered solutions) and two types of platelet concentrates (containing 100% plasma, or ...