Image-matching is a basic task in image procession used to (geometrically) match two or more images such as different times, different sensors and different view points. Improved image-matching technology has been widely applied in medical image, remote sensing image, computer vision military and so on. What put forward at the present can be most divided into matching method based on gray and f...

This paper presents an obstacle detection algorithm based on the consecutive and the cooperative range sensor scanning schemes. For a known environment, a mobile robot scans the surroundings using a range sensor that can rotate 360 ° . The environment is rebuilt using nodes of two adjacent walls. The robot configuration is then estimated and an obstacle is detected by comparing characteristic p...

Camera motion detection is essential for automated video analysis. We propose a new probabilistic model for detecting zoom-in/zoom-out operations. The model uses EM to estimate the probability of a zoom versus a nonzoom operation from standard MPEG motion vectors. Traditional methods usually set an empirical threshold after deriving parameters proportional to zoom, pan, rotate and tilt. In cont...

This paper presents a fuzzy tuning approach to sliding mode control for tracking-performance enhancement in a class of nonlinear systems. The sliding surface can rotate or shift in the phase space in such a direction that the tracking behaviour can be improved. It is shown that with arbitrary initial conditions, the reaching time and tracking error in the approaching phase can be significantly ...

This paper presents a map-based interface for accessing situated services. The map-application utilises multimodal and context information to rotate, position and zoom the map appropriately. Services can easily be located on the map. Services that are outside the viewed portion of the map are shown on an information border that gives the direction in which the services may be found. An initial ...

In the National Spherical Torus Experiment (NSTX), a peak plasma current up to 390 kA has been successfully generated by the Coaxial Helicity Injection (CHI) current drive method. The plasma rotation (∼ 20 km/s) driven in the E × B toroidal direction by CHI has been clearly identified by an ion Doppler spectroscopic measurement. The n = 1 mode has been also observed to rotate in the same direct...

In many technological applications, materials are transported by fluid flow at micro/nanometer scales. Conventionally, macroscopic apparatuses, such as syringe pumps, are used to drive the flow. This work explores the possibility of utilizing motile bacteria as microscopic pumps. We used micro-fabricated structures to confine smooth-swimming bacteria in a prescribed configuration. The flagella ...

Motion planning consists of finding a sequence of motions for a robot (movable object) to move from a start configuration to a goal configuration without colliding with any obstacle. PRMs create a roadmap that paths can be extracted from. To create the roadmap, nodes are generated in the environment at random. Each node represents a possible position the robot can move to. Only feasible nodes a...

Today, the simulation with MATLAB is a modern method to optimize 2R robotic arm. One of important problems arm mode rotation his links. In manuscript, an algorithm in proposed for two bars that belong robot However, mechanism from this paper composed of: links, joints, end effector and base. At beginning links are horizontal position. Furthermore, these programmed counterclockwise rotate after ...