Choosing the appropriate type of video input is an important issue for any vision-based system and the right decision must take into account the specific requirements of the intended application. We present GlobeAll, a modular four-component prototype for a vision-based Intelligent Room: a video input component that uses an electronic pan-tilt-zoom camera array, a background learning and foregr...

PTZ cameras have the ability to cover wide areas with an adapted resolution. In this article we propose a background subtraction algorithm suitable for a PTZ camera performing a guard tour. It relies on the estimation of a probability density function based on the matching of keypoints between the background and the current image. Its main interest consists in the resulting robustness to sudden...

BACKGROUND Cam impingement as a known sequelae of slipped capital femoral epiphysis (SCFE) has led to speculation that subclinical SCFEs may be the causative factor in idiopathic cam morphology; alternatively, others have implicated an abnormal extension of the growth plate as a causative factor. HYPOTHESIS/PURPOSE To investigate the growth plate tilt angle in 4 patient cohorts: normal patien...

patients who are on prolonged ventilator support in critical care unit present wide variety of complications, which range from reduction in oxygen uptake to various musculoskeletal impair-ments. early mobilization and rehabilitation are encouraged to manage these complications effectively. use of tilt table to motivate early mobilization in the intensive care unit for ventilator practices is no...

aquatic environments are often contaminated by various industrial, agricultural and domestic sewage, while different pesticides have markedly different effects on aquatic life. scenedesmus spp. are often used as an indicator to show changes in physico-chemical and environmental conditions of the aquatic ecosystems. this study aimed to investigate the effects of different concentrations of pesti...

The purpose of this study was to examine the relationships between measurements of lumbar lordosis, pelvic tilt, and abdominal muscle performance during normal standing. In addition, the reliability of the measurements used in this study was examined. Measurements of lumbar lordosis, pelvic tilt, and abdominal muscle performance were taken of 31 healthy adults aged 20 to 33 years. Each measurem...

Most studies on tilt based interaction can be classified as point-designs that demonstrate the utility of wrist-tilt as an input medium; tilt parameters are tailored to suit the specific interaction at hand. In this paper, we systematically analyze the design space of wrist-based interactions and focus on the level of control possible with the wrist. In a first study, we investigate the various...

Electron crystallography of two-dimensional (2D) crystals is a powerful approach for the analysis of membrane protein structure. Three-dimensional (3D) structures are derived by merging data from 2D crystals at varying tilt axes and tilt angles. A graphical representation was developed that incorporates the tilt geometry to display the quality of each image. Information that can be extracted fr...