نتایج جستجو برای: surface reconstruction

تعداد نتایج: 748933  

Journal: :journal of current ophthalmology 0
مهدی حسینی تهرانی mehdi hosseinitehrani سیدفرزاد محمدی s-farzad mohammadi آسو عل محمودی asou alimahmoudi ونداد فرهادی vandad farhady

we are describing a new surgical approach in the management of advanced ocular surface cicatrization through a single procedure conjunctival-limbal-corneal allograft in which the external eye is resurfaced it involves a lamellar corneolimbal keratoplasty, 360° limbal stem cell transfer (on a “bipedicle” conjunctival-corneal carrier), and conjunctival tissue transplantation - all in a single con...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

Journal: :iranian journal of medical physics 0

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...

Amin Rahpeyma, Mohammadreza Nakhaei Saeedeh Khajehahmadi

Introduction: Reconstruction of intraoral soft tissue defects is important in restoring function and esthetic. In large defects, there will be demand for regional pedicle flaps or free flaps. Hard palate separates nasal and oral cavities. Due to the small surface area between flap and remaining palate after surgical resections, optimal blood supply of the flaps for hard palate reconstructions ...

Journal: :iranian journal of otorhinolaryngology 0
amin rahpeyma oral and maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. saeedeh khajehahmadi 2dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. mohammadreza nakhaei 2dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.

introduction: reconstruction of intraoral soft tissue defects is important in restoring function and esthetic. in large defects, there will be demand for regional pedicle flaps or free flaps. hard palate separates nasal and oral cavities. due to the small surface area between flap and remaining palate after surgical resections, optimal blood supply of the flaps for hard palate reconstructions a...

2012
John Mark P. Martirez Erie H. Morales Wissam A. Saidi Dawn A. Bonnell Andrew M. Rappe

John Mark P. Martirez, Erie H. Morales, Wissam A. Saidi, Dawn A. Bonnell, and Andrew M. Rappe The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6202, USA Department of Chemical and Petroleum Engineering...

2010
P. Surynková

We describe the problem of surface reconstruction from the point clouds which is applied in many scientific and engineering applications. Our aim is to obtain a visualization of data from 3D scanning and document the real objects digitally. Digital documentation brings the possibility to manipulate with surfaces in mathematical and modelling computer software. It can help with reconstruction an...

2002

We present an efficient algorithm that computes a manifold triangular mesh from a set of unorganized sample points in 3 . The algorithm builds on the observation made by several researchers that the Gabriel graph of the sample points provides a good surface description. However, this surface description is only one-dimensional. We associate the edges of the Gabriel graph with index 1 critical p...

2006
Ralph W. L. Ip Angela C. W. Yeung Felix T. S. Chan Henry C. W. Lau

Applying surface fitting models to reconstruct 3-D objects with free-form features is widely employed from toy industry to medical surgery. However, reconstruction of free-form surfaces from range-image data always prone to intensive manual operations, and some technical skills are always needed. Recently, research focus on the studies of improving surface reconstruction results to achieve bett...

2005
Abel Gezahegne

The problem of three-dimensional surface reconstruction from a set of unorganized set of points sampled from the surface of an object is important in many applications, such as computer vision, computer-aided design and solid modeling. In recent years several algorithms have been presented for surface reconstruction with provable guarantee on the closeness of the approximation. This thesis pres...

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