In this paper, we present a novel approach to estimate traffic speed using a sequence of images from an uncalibrated camera. We assert that exact calibration is not necessary to estimate speed. Instead, we use 1) geometric relationships inherently available in the image, 2) some common-sense assumptions that reduce the problem to a one-dimensional (1-D) geometry, 3) frame differencing to isolat...

In our method for tracking objects, appearance features are smoothed by robust and adaptive Kalman filters, one to each pixel, making the method robust against occlusions. While the existing methods use only intensity to model the object appearance, our paper concentrates on multivalue features. Specifically, one option is to use photometric invariant color features, making the method robust to...

A real-time tracking system was built to track performers on an interactive stage. Using an ordinary, up to date, desktop workstation, the performers’ silhouette was segmented from the background and parameterized by calculating the normalized central image moments. In the stage system, the silhouette moments were then sent to a parallel workstation, which used them to generate corresponding 3D...

An active contour is used to track a target in a sequence recorded by a walking robot in an unstructured scene . The deformations of the contour are analysed in order to extract the robot’s egomotion, from which we compute the epipolar geometry that guides the matching between different views of the scene. The results prove that the proposed solution is a promising alternative to the prevalent ...

We describe an efficient method of using a translating camera to detect and track independently translating objects and assess the likelihood of a collision. By analysing the underlying geometry it is shown that the tracking is reduced to two independent linear searches for a single feature in the image plane. Results are presented for both an off-line implementation and work towards a real tim...

THE JOINT Air Force and Navy Defense Meteorological Satellite Program (DMSP) has a rich heritage of flying new state-of-the art remote sensing instruments to provide timely and critical global weather intelligence to the military users and stable global radiometric observations to the earth science community. In particular, DMSP has had a string of successes flying passive microwave sensors wit...

This study aimed to theoretically evaluate soil thrust on a clay slope as reaction force associated with the motion of an off-road tracked vehicle. The existing concept potential failure modes block flat ground has extended determine sloped ground. Based upper-bound limit analysis, under most critical was derived for three modes: block, triangular-wedge, and trapezoidal-wedge failures. Specific...

The combination of electrodeposition and polymeric templates created by heavy-ion irradiation followed by chemical track etching provides a large variety of poly- and single-crystalline nanowires of controlled size, geometry, composition, and surface morphology. Recent results obtained by our group on the fabrication, characterization and size-dependent properties of nanowires synthesized by th...