The implementation of wireless communications in office buildings requires the profound knowledge of signal penetration within buildings. This knowledge should include information, concerning the in-building structure that strongly affects the signal transmission. This paper contributes to the modeling of propagation losses and measurement techniques in modern office buildings for Spread Spectr...

Solving the problem of stem contour extraction maize is difficult under open field conditions, and diameter cannot be measured quickly nondestructively. In this paper, at small large bell stages was object study. An adaptive threshold segmentation algorithm based on color space model proposed to obtain in field. Firstly, 2D images were captured with an RGB-D camera. Then, processed by hue satur...

although, most of the abnormal structures of human brain do not alter the shape of outer envelope of brain (surface), some abnormalities can deform the surface extensively. however, this may be a major problem in a surface-based registration technique, since two nearly identical surfaces are required for surface fitting process. a type of verification known as the circularity check for the shap...

Abstract To determine the stress–strain curve of a ductile material up to fracture from tensile test, necking contour is measured by an optical measurement technique. The radius minimal cross-sectional area and curvature are used as input for analytical corrections curve, well finite element inverse simulations. Due increasing surface roughness that develops during testing, precise determinatio...