نتایج جستجو برای: 3d structure

تعداد نتایج: 1722805  

2016
Xiangdan Zhang Feifei Yang Shizhong Cui Wutao Wei Weihua Chen Liwei Mi

New CuS nanocrystals with a 3D hierarchical branched structure are successfully synthesized through in situ consecutive reaction method with copper foam as template. The formation mechanism of the 3D hierarchical branched structure obtained from the secondary reaction is investigated by adjusting the reaction time. The morphology of CuS nanosheet arrays with the 3D hierarchical branched structu...

Journal: :NeuroImage 2009
Jean-Baptiste Durand Ronald R. Peeters J. Farley Norman James T. Todd Guy A. Orban

Three-dimensional (3D) shape is important for the visual control of grasping and manipulation. We used fMRI to study the processing of 3D shape extracted from disparity in human parietal cortex. Subjects stereoscopically viewed random-line stimuli portraying a 3D structure, a 2D structure in multiple depth planes or a 2D structure in the fixation plane. Subtracting the second from the first con...

2015
Maor Mutzafi Yoav Shechtman Yonina C. Eldar Oren Cohen Mordechai Segev

Deciphering the three-dimensional (3D) structure of complex molecules is of major importance, typically accomplished with X-ray crystallography. Unfortunately, many important molecules cannot be crystallized, hence their 3D structure is unknown. Ankylography presents an alternative, relying on scattering an ultrashort X-ray pulse off a single molecule before it disintegrates, measuring the far-...

2013
Jinmi Kang Kidong Chung

With the development of 3D devices such as TV, monitors, and mobile phones, 3D display can support multiple viewpoints in the user's terminal. For these applications, higher coding efficiency for stored or transmitted data is significant, since the number of views has been increased with the technical development of 3D display. To adapt the coder to 2D and diverse views devices, it is important...

2001
Beom-Soo Oh Chang-Hun Kim

This paper presents a progressive algorithm for reconstructing a 3D structure from a given 2D sketch drawing (edge-vertex graph without hidden line removal) according to the user’s sketch order. While previous methods reconstruct a 3D structure at once, the proposed method progressively calculate a 3D structure by optimizing the coordinates of vertices of an object according to the sketch order...

2015
Yue Bai Huaqiang Wu Kun Wang Riga Wu Lin Song Tianyi Li Jiangtao Wang Zhiping Yu He Qian

There are two critical challenges which determine the array density of 3D RRAM: 1) the scaling limit in both horizontal and vertical directions; 2) the integration of selector devices in 3D structure. In this work, we present a novel 3D RRAM structure using low-dimensional materials, including 2D graphene and 1D carbon nanotube (CNT), as the edge electrodes. A two-layer 3D RRAM with monolayer g...

Journal: :Computer applications in the biosciences : CABIOS 1997
H. Kato Y. Takahashi

This paper discusses the implementation of a three-dimensional (3D) structure motif search of proteins. Each protein structure is represented by a set of secondary structure elements (SSEs) which involves alpha-helix segments and beta-strand segments. In describing it, every SSE is further reduced into a two-node graph that consists of the starting amino acid residue, the ending residue and a p...

2002
Rui F. C. Guerreiro Pedro M. Q. Aguiar

The majority of methods available to recover 3D structure from video assume that a set of feature points are tracked across a large number of frames. This is not always possible in real videos because the images overlap only partially, due to the occlusion and the limited field of view. This paper describes a new method to recover 3D structure from videos with partially overlapping views. The w...

1997
Tony S. Jebara Alex Pentland

Submitted to CVPR November 1996 Parametrized Structure from Motion for 3D Adaptive Feedback Tracking of Faces Tony S. Jebara and Alex Pentland Media Laboratory, Massachusetts Institute of Technology Cambridge, MA 02139 November 28th, 1996 Abstract A real-time system is described for automatically detecting, modeling and tracking faces in 3D. A closed loop approach is proposed which utilizes str...

2008
Gabriel J. Brostow Jamie Shotton Julien Fauqueur Roberto Cipolla

We propose an algorithm for semantic segmentation based on 3D point clouds derived from ego-motion. We motivate five simple cues designed to model specific patterns of motion and 3D world structure that vary with object category. We introduce features that project the 3D cues back to the 2D image plane while modeling spatial layout and context. A randomized decision forest combines many such fe...

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