In this paper we propose an algorithm for smoke detection on the color video sequences obtained from the stationary camera. Our algorithm composed of three basic steps: moving areas (blobs) segmentation in a current input frame; received blobs classification; merge of the moving blobs obtained at the previous steps. We use blocks matching approach for optical flow calculation. It considers a pr...

This report presents a review of a video moving target indication (VMTI) capability implemented in the Analysts’ Detection Support System (ADSS). The VMTI subsystem has been devised for video from moving sensors, in particular, but not exclusively, airborne urban surveillance video. The paradigm of the moving sensor, which is a typical scenario in defence applications (e.g., UAV surveillance vi...

Lattice simulations of B → π lν decays are problematic in the low q2 region when the pion has to have large momentum in the lattice frame for a B meson at rest or moving slowly. The movingNRQCD formalism provides a way around this by giving an accurate discretization of a b quark moving at arbitrary velocity v, and therefore a B meson moving at high momentum in the lattice frame. Here we show r...

The aim of this research is to develop a fast and reliable surveillance system based on a personal digital assistant (PDA) device. This is to extend the capability of the device to detect moving objects which is already available in personal computers. Secondly, to compare the performance between Background subtraction (BS) and Temporal Frame Differencing (TFD) techniques for PDA platform as to...

Video frame interpolation has applications in video compression as well as up-sampling to higher frame rates. However, it is a challenging task, especially when objects in the scene are moving in different ways. The current state-of-the-art methods use optical flow to account for motion in a scene, but computing optical flow robustly is still a difficult process, which can lead to artifacts in ...

A model for a quadrotor helicopter, its flatness-based parameterization, and its control are investigated. The model is transformed by expressing the configuration in terms of a reference trajectory and the deviation from the latter. A flat output for the error system is introduced. A dynamic and a quasi-static feedback for asymptotic stabilization of reference trajectories are derived. The app...

In this paper, we introduce a method of imposing asymmetric conditions on the velocity vector with respect to independent variables and a method of moving frame for solving the three-dimensional Navier-Stokes equations. Seven families of nonsteady rotating asymmetric solutions with various parameters are obtained. In particular, one family of solutions blows up at any point on a moving plane wi...

We are concerned with enabling truly large scale autonomous navigation in typical human environments. To this end we describe the acquisition and modeling of large urban spaces from data that reflects human sensory input. Over 200GB of image and inertial data are captured using head-mounted stereo cameras. This data is processed into a relative map covering 121 km of Southern England. We point ...

Video surveillance has long been in use to monitor security sensitive areas such as banks, department stores, highways, crowded public places and borders. The advance in computing power, availability of large-capacity storage devices and high speed network infrastructure paved the way for cheaper, multi sensor video surveillance systems. Traditionally, the video outputs are processed online by ...

A problem of electromagnetic (EM) plane wave diffraction on a moving half-plane in a homogeneous and isotropic medium is considered. It is shown, that unlike the stationary case, the shadow boundaries of the incident and reflected wave are not parallel to propagation directions of those waves. Other diffraction phenomena reported earlier for objects with moving edges, are also observed here.