نتایج جستجو برای: 2d or 3d

تعداد نتایج: 3731382  

2008
S. Bleisch

This paper describes the concepts and the successful prototypal implementation of interactively connected 2D information visualizations and data displays in 3D virtual environments for the interactive exploration of spatial data and information. Virtual globes or earth viewers such as Google Earth have become very popular over the last few years. They are used for looking at holiday destination...

2003
Kyong I. Chang Kevin W. Bowyer Patrick J. Flynn

Results are presented for the largest experimental study to date that investigates the comparison and combination of 2D and 3D face data for biometric recognition. To our knowledge, this is also the only such study to incorporate significant time lapse between gallery and probe image acquisition. Recognition results are presented for gallery and probe datasets of 166 subjects imaged in both 2D ...

2016
Jiajun Wu Tianfan Xue Joseph J. Lim Yuandong Tian Joshua B. Tenenbaum Antonio Torralba William T. Freeman

Understanding 3D object structure from a single image is an important but difficult task in computer vision, mostly due to the lack of 3D object annotations in real images. Previous work tackles this problem by either solving an optimization task given 2D keypoint positions, or training on synthetic data with ground truth 3D information. In this work, we propose 3D INterpreter Network (3D-INN),...

Journal: :AJNR. American journal of neuroradiology 2012
M Kitajima T Hirai Y Shigematsu H Uetani K Iwashita K Morita M Komi Y Yamashita

BACKGROUND AND PURPOSE Although 3D FLAIR imaging visualizes detailed structures of the brain stem, it has not been used to evaluate its normal anatomy. The purpose of this study was to evaluate whether 3D FLAIR images can provide more detailed anatomic information of the brain stem than 2D FLAIR and 2D T2WI. MATERIALS AND METHODS We prospectively evaluated MR images in 10 healthy volunteers. ...

alireza Amouheidari parvaneh shokrani, Somayeh karimi

Introduction: Sensorineural hearing loss (SNHL) is one of the possible complications of radiotherapy treatment of brain tumors. The auditory system of patients with brain tumors often is placed inside of radiation field and receives a significant amount of radiation dose resulting in hearing loss. The purpose of this study was to compare contouring and delivery dose to cochlea...

Journal: :European journal of public health 2015
Hyun-Ghang Jeong Young-Hoon Ko Changsu Han So-Young Oh Kun Woo Park Taehee Kim Deokwon Ko

BACKGROUND Watching three-dimensional television (3D TV) may strain the eyes. However, other potential harmful effects of 3D TV watching have been rarely investigated. The current study examined the impact of 3D TV watching on neurophysiological responses and cognitive functioning as compared with two-dimensional TV (2D TV) watching. METHODS A total of 72 individuals were randomly assigned to...

2016
Amin Jourabloo

3D face reconstruction is a very challenging problem in computer vision, and is used as a prerequisite for many important vision tasks, e.g., face recognition and face frontalization. The importance of 3D face reconstruction is that we can estimate illumination and pose information by using the 3D shape of the face. Since the human face is a non-rigid 3D object, estimating the 2D shape of the f...

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2015
M Dueholm J W Christensen S Rydbjerg E S Hansen G Ørtoft

OBJECTIVES To evaluate the diagnostic efficiency of two-dimensional (2D) and three-dimensional (3D) transvaginal ultrasonography, power Doppler angiography (PDA) and gel infusion sonography (GIS) at offline analysis for recognition of malignant endometrium compared with real-time evaluation during scanning, and to determine optimal image parameters at 3D analysis. METHODS One hundred and sixt...

Journal: :BMC Nuclear Medicine 2007
Karin Knešaurek Josef Machac Jong Ho Kim

BACKGROUND We compared 2D, 3D high dose (HD) and 3D low dose (LD) gated myocardial Rb-82 PET imaging in 16 normal human studies. The main goal in the paper is to evaluate whether the images obtained by a 3D LD studies are still of comparable clinical quality to the images obtained with the 2D HD or 3D HD studies. METHODS All 2D and 3D HD studies were performed with 2220 MBq of Rb-82. The 3D L...

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