Introduction 3D reconstruction of an object from its 2D cross-sections (slices) has many applications in different fields of sciences such as medical physics and biomedical engineering. In order to perform 3D reconstruction, at first, desired boundaries at each slice are detected and then using a correspondence between points of successive slices surface of desired object is reconstructed. Mate...

An accurate segmentation of vascular systems is fundamental for many medical applications. Stability against different contrast levels and noise are very important. In this paper we propose an approach for the segmentation of the vascular system of the liver. It is based on the gradient vector flow (GVF) and Frangis vesselness measure. This method avoids multi-scale analysis and related scale s...

BACKGROUND Various processes such as annotation and filtering of variants or comparison of variants in different genomes are required in whole-genome or exome analysis pipelines. However, processing different databases and searching among millions of genomic loci is not trivial. RESULTS gSearch compares sequence variants in the Genome Variation Format (GVF) or Variant Call Format (VCF) with a...

Nowadays, modern life use biometric technology in face recognition such as to assist law enforcement and security. Automatic retrieval of photos of suspects from the police mugshot database can help the police narrow down potential suspects quickly. However, in most cases, the photo image of a suspect is not available. Therefore, a sketch drawing based on the recollection of an eyewitness is an...

In oil field applications it is often required to pump oil, gas, and water as mixtures rather than separating the fluid. Although the performance prediction of twin-screw pumps on liquids is well established, the prediction of performance of these pumps on multiphase mixtures presents a challenge. Test data of twin-screw rotary pumps are compared with predictions of performance over ranges of f...

We present a prototype software system with sufficient capacity and speed to estimate radiation exposures in a mass casualty event by counting dicentric chromosomes (DCs) in metaphase cells from many individuals. Top-ranked metaphase cell images are segmented by classifying and defining chromosomes with an active contour gradient vector field (GVF) and by determining centromere locations along ...