In this paper we introduce a new technique for data-dependent triangulation which is suitable for implementation on a GPU. Our solution is based on a new parallel version of the well known Lawson’s optimization process and is fully compatible with restrictions of the GPU hardware. We test and compare the quality of our solution in an image reconstruction problem. In comparison with the standard...

normal 0 false false false en-us x-none ar-sa digital breast tomosynthesis (dbt) is a technology that creates three dimensional (3d) images of breast tissue. tomosynthesis mammography detects lesions that are not detectable with other imaging systems. if image reconstruction time is in the order of seconds, we can use tomosynthesis systems to perform tomosynthesis-guided interventional procedur...

In this work, we suggest a feature based facial image reconstruction technique. The encoding technique utilizes affine structure of the face to capture the global facial motion [5]. The structure information is transmitted only once at the bootstrapping stage. After that only the motion information for each frame is used to reconstruct the image at the decoder. An attempt is made to perform loc...

We present a procedure for asteroids 3D surface reconstruction from images for close approach distances. Different from other 3D reconstruction scenario from spacecraft images, the closer flyby gave the chance to revolve around the asteroid shape and thus acquiring images from different viewpoints with a higher baseline. The chance to have more information of the asteroids surface is however pa...

The work presented in this paper has been performed under a Spanish research project. The main aim of the tasks, we were responsible of, was the development of a vision subsystem for 2D image preprocessing. These algorithms are the first step of a 3D reconstruction algorithm. These algorithms have been improved by the addition of fault tolerance capabilities. To achieve this goal, the classical...

We develop a method for reconstructing the three-dimensional (3D) trajectories of droplets in flight captured by multiple unsynchronized cameras. Triangulation techniques that underpin most stereo reconstruction methods do not apply in this context as the image streams recorded by different cameras are not synchronized. We assume instead a priori knowledge about the motion of the droplets to re...

* ABSTRACT The present paper proposes a synthetic overview of regularization techniques for the reconstruction of piecewise regular signals and images. The stress is put on Tikhonov penalized approach and on subsequent non-quadratic and halfquadratic generalizations. On one hand, a link is made between the detection-estimation formulation and the non-convex penalization approach. On the other h...

UNLABELLED The use of different scanners, acquisition protocols, and reconstruction algorithms has been identified as a problem that limits the use of PET in multicenter trials. The aim of this project was to aid standardization of data collection by developing a quality assurance method for measuring the spatial resolution achieved with clinical imaging protocols. METHODS A commercially avai...

An odontogenic keratocyst was detected and treated in the lower jaw. A 3D reconstruction from a CT scan was made before surgery and 15 months after. The healing process was monitored using stressstrain analyses of the mandible with a system of keratocysts, and by comparing them with the analogous data of stress-strain analyses of the patients mandible after the surgical extirpation of the cysts.

Introduction The study of tree rings is one of the most widely used methods of climate reconstruction for centuries and millennia, but the occurrence of climatic anomalies such as global warming in recent decades has caused divergence problem in the series of tree rings in some areas. Which challenges the ability of this proxy to regenerate the climate. The “divergence problem” is the differen...