Three-dimensional shape reconstruction of objects in water by observing from outside requires a geometrical analysis which takes the refraction effect into account. In the analysis, it is indispensable to know the shape of a vessel whose surface has discontinuity of the refractive index. This paper proposes a method for three-dimensional measurement which determines the vessel shape at first an...

We study the applicability of spheroidal model particles for simulating the single-scattering optical properties of mineral dust aerosols. To assess the range of validity of this model, calculations are compared to laboratory observations for five different dust samples at two wavelengths. We further investigate whether the best-fit shape distributions of spheroids for different mineral dust sa...

In content-based image retrieval systems, the content of an image such as color, shapes and textures are used to retrieve images that are similar to a query image. Most of the existing work focus on the retrieval e€ectiveness of using content for retrieval, i.e., study the accuracy (in terms of recall and precision) of using di€erent representations of content. In this paper, we address the iss...

AIM The experiment was carried out to evaluate different external and internal egg quality traits and to figure out their mode of inheritance from a set of hierarchically classified data. MATERIALS AND METHODS The data collected from 548 progenies (1 egg from each progeny) of 282 dams mated to 47 sires (1 sire mated to 6 dams) of a White Leghorn flock were used in the present study. Phenotypi...

Oil palm ash (OPA), a bio-agricultural waste from oil palm mills, was subjected to high-energy ball milling for 30 h and was converted into a nano-structured material. The nano-structured OPA was characterized for its particle size and crystallinity index by using Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD) analysis. The crystallite size obtained from TEM and XRD was foun...

The aim of this study was to quantify facial movements in a sample of normal adults and to investigate the influence of sex and facial shape on these movements. The study sample consisted of 50 healthy adult subjects, 25 males and 25 females (age: mean = 27.3 years; range = 23-39 years). A video-based tracking system was used to track small-diameter retroreflective markers positioned at specifi...

This paper deals with 3D mesh indexation by using shape descriptors (SD) under constraints of geometrical invariance and topological robustness. The 3D Shape Spectrum Descriptor (3D SSD), recently adopted within the future MPEG-7 standard, is first introduced. The 3D SSD aims at providing an intrinsic shape description of a 3D mesh and is defined as the distribution of the shape index over the ...

Prone position radiotherapy for a small (< 750 cm3) breast is controversial because of the variable benefits for the irradiated heart volume. The objective anatomical parameters related with chest wall shape that can determine the heart dose sparing patients in the prone position.Twenty-one patients underwent CT-simulation in supine and prone position. Dose volume parameters were compared and t...