Abstract In image-guided surgery, imaging systems such as (stereo-)endoscopes allow intra-operative 3D reconstructions in form of point clouds. However, endoscopes provide only a narrow field view, resulting confined cloud. this paper, we present an analysis and registration pipeline for clouds acquired by stereo into fused representation. For coarse registration, TEASER is applied, while refin...

In November of 2005 a measurement series was conducted on different kinds of reference objects to compare the results of the FRM-II (ANTARES) and the Budapest (Radiography Station) research reactor in the field of neutron radiography, gamma radiography, classical tomography and discrete tomography by an ANDOR CCD camera and Imaging plate with BAS 2500 Scanner (contributed by AIDA software).

statement of the problem diagnosis of periodontal diseases without any accurate radiograph is inadequate. bitewing (bw) and periapical (pa) radiographic techniques are commonly used to assess alveolar bone crest (abc) level which is crucial in the evaluation of periodontal disease. purpose the purpose of this study was to compare the precision of bw and pa radiographs in determining the distanc...

abstract background: with respect to the difference in the interaction of thermal neutron and x rays with matter, using two radiography systems of thermal neutron and x rays will yield highly valuable information for studying the inner structure of biologic samples. methods: the high sensitivity of thermal neutron to hydrogen, in particular, has led to recognizing this system as a useful tool i...

Video surveillance is one of the most studied application in Computer Vision. We propose a novel method to identify and track people in a complex environment with stereo cameras. It uses two stereo cameras to deal with occlusions, two different background models that handle shadows and illumination changes and a new segmentation algorithm that is effective in crowded environments. The algorithm...

People counting is a challenging task with many applications. We propose a method with a fixed stereo camera that is based on projecting a template onto the depth image. The method was tested on a challenging outdoor dataset with good results and runs in real time.

We present a method for online rigid object tracking using an adaptive view-based appearance model. When the object’s pose trajectory crosses itself, our tracker has bounded drift and can track objects undergoing large motion for long periods of time. Our tracker registers each incoming frame against the views of the appearance model using a twoframe registration algorithm. Using a linear Gauss...

A novel stereoscopic/3D desktop monitor has been developed that combines the output of two active matrix LCDs (AMLCDs) into a stereo image through use of a unique beamsplitter design. This approach, called the StereoMirror, creates a stereo/3D monitor that retains the full resolution, response time and chromaticity of the component displays. The resultant flicker-free image, when viewed with pa...

Aims & Objectives: To compare the fi ndings of Radiography and Computed Tomography (CT) in the diagnosis of vertical root fractures and to correlate our fi ndings post operatively. Material and Methods: We evaluated 22 cases of clinically suspected vertical root fractures those who were referred to us for Dental CT and compared fi ndings of Radiography and CT. Radiography was carried out in the...