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Browsing 情報科学研究科 / Graduate School of Information Science by Submit Date

Browsing 情報科学研究科 / Graduate School of Information Science by Submit Date

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  • Light Transport Refocusing for Unknown Scattering Medium 
    Md. Abdul, Mannan; Tagawa, Seiichi; Tamaki, Toru; Nagahara, Hajime; Mukaigawa, Yasuhiro; Yagi, Yasushi (IEEE, 2014-08-28)
    In this paper we propose a new light transport refocusing method for depth estimation as well as for investigation inside scattering media with unknown scattering properties. Propagated visible light rays through scattering ...
  • Surface Normal Deconvolution: Photometric Stereo for Optically Thick Translucent Objects 
    Inoshita, Chika; Mukaigawa, Yasuhiro; Matsushita, Yasuyuki; Yagi, Yasushi (Springer, Cham, 2014-09-12)
    This paper presents a photometric stereo method that works for optically thick translucent objects exhibiting subsurface scattering. Our method is built upon the previous studies showing that subsurface scattering is ...
  • Raindrop Detection and Removal from Long Range Trajectories 
    You, Shaodi; T. Tan, Robby; Kawakami, Rei; Mukaigawa, Yasuhiro; Ikeuchi, Katsushi (Springer, Cham, 2015-04-16)
    In rainy scenes, visibility can be degraded by raindrops which have adhered to the windscreen or camera lens. In order to resolve this degradation, we propose a method that automatically detects and removes adherent ...
  • Estimating Depth of Layered Structure Based on Multispectral Speckle Correlation 
    Matsumura, Takahiro; Mukaigawa, Yasuhiro; Yagi, Yasushi (IEEE, 2014-12-11)
    Some objects have layered structures in which a dynamic region is covered by a static layer. In this paper, we propose a new experiment for estimating the depth of the dynamic region using speckle analysis. The speckle is ...
  • Layered optical tomography of multiple scattering media with combined constraint optimization 
    Yuan, Bingzhi; Tamaki, Toru; Kushida, Takahiro; Raytchev, Bisser; Kanedal, Kazufumi; Mukaigawa, Yasuhiro; Kubo, Hiroyuki (IEEE, 2015-01-30)
    In this paper, we proposed an improved optical scattering tomography for optically dense media. We model a material by many layers with voxels, and light scattering by a distribution from a voxel in one layer to other ...
  • Recovering Inner Slices of Translucent Objects by Multi-frequency Illumination 
    Tanaka, Kenichiro; Mukaigawa, Yasuhiro; Kubo, Hiroyuki; Matsushita, Yasuyuki; Yagi, Yasushi (IEEE, 2015-06-12)
    This paper describes a method for recovering appearance of inner slices of translucent objects. The outer appearance of translucent objects is a summation of the appearance of slices at all depths, where each slice is ...
  • Analysis of Depth Restoration via Regularization in Curvelet Domain 
    Qirui, Zhang; 武富, 貴史; Alexander, Plopski; Christian, Sandor; 加藤 博一 (2017-07-02)
  • Shape Disparity Inspection of The Textured Object and Its Notification by Overlay Projection 
    Toshiyuki Amano,Hirokazu Kato (Springer, 2009-07)
    In this paper we describe about use of the projector camera feedback system for shape disparity check of the textured object. Using the negative feedback in the proposed system, we realized real time shape disparity ...
  • Visualization of Geometric Properties of Flexible Objects for Form Designing 
    Goshiro Yamamoto, Ichiroh Kanaya,Keiko Yamamoto, Yuki Uranishi,Hirokazu Kato (IEEE, 2011-10)
    Computer-aided design (CAD) system conventionally have been widely used to support designers for creating, modifying, adding something to or removing something from objects by showing simulated objects on computer screen. ...
  • Relationship between Features of Augmented Reality and User Memorization 
    Yuichiro Fujimoto,Goshiro Yamamoto,Takafumi Taketomi,Jun Miyazaki,Hirokazu Kato (IEEE, 2012-11)
    The objective of this study is to investigate the relationship between the features of augmented reality (AR) and human memorization ability. The basis of this relation is derived from the following features. The AR feature ...
  • Zoom Factor Compensation for Monocular SLAM 
    Takafumi Taketomi,Janne Heikkila (IEEE, 2015-3)
    SLAM algorithms are widely used in augmented reality applications for registering virtual objects. Most SLAM algorithms estimate camera poses and 3D positions of feature points using known intrinsic camera parameters that ...
  • A Fast Simulation Method Using SPH and Wavelet for Turbulent Flow 
    Makoto Fujisawa,Hirokazu Kato
    This paper presents a fast simulation method for turbulent flow which uses a particle method and wavelet analysis. To simulate fluid flow, the method uses smoothed particle hydrodynamics (SPH), which discretizes the fluid ...
  • Support of Temporal Change Observation Using Augmented Reality for Learning 
    Takafumi Taketomi,Angie Chen,Goshiro Yamamoto,Hirokazu Kato (Springer, 2014-06)
    An augmented reality (AR) technology enables to show an additional information by superimposing virtual objects onto the real world. The AR technology is gradually used in the learning environment for observing unseeable ...
  • Local quadrics surface approximation for real-time tracking of textureless 3D rigid curved objects 
    Marina Atsumi Oikawa,Takafumi Taketomi,Goshiro Yamamoto,Makoto Fujisawa,Toshiyuki Amano,Jun Miyazaki,Hirokazu Kato (IEEE, 2012-5)
    This paper addresses the problem of tracking textureless rigid curved objects. A common approach uses polygonal meshes to represent curved objects and use them inside an edge-based tracking system. However, in order to ...
  • Interactive Fluid Simulation Using Augmented Reality Interface 
    Makoto Fujisawa,Hirokazu Kato (Springer, 2009-7)
    This paper presents an interactive fluid simulation system using augmented reality interface. The presented system uses Smoothed Particle Hydrodynamics to simulate the behavior of liquid and adopts a particle-particle ...
  • Geometrically-correct projection-based texture mapping onto a cloth 
    Yuichiro Fujimoto,Jun Miyazaki,Takafumi Taketomi,Hirokazu Kato,Bruce H. Thomas,Goshiro Yamamoto,Ross T. Smith (IEEE, 2014-3)
    We demonstrate the geometrically-correct projection-based texture mapping onto a deformable object like a cloth. This system can be used to simulate design that involves change in shape, such as sheets of malleable material. ...
  • Real World Dynamic Appearance Enhancement with Procam Feedback 
    Toshiyuki Amano,Hirokazu Kato (ACM, 2008-8)
    In this paper, a dynamic appearance enhancement method for the less saturated object is proposed. The appearance enhancement method proposed in this paper is realized with a projector camera dynamic feed back system. ...
  • Geometric Registration for Zoomable Camera Using Epipolar Constraint and Pre-calibrated Intrinsic Camera Parameter Change 
    Takafumi Taketomi,Kazuya Okada,Goshiro Yamamoto,Jun Miyazaki,Hirokazu Kato (IEEE, 2013-10)
    In general, video see-through based augmented reality (AR) cannot change the magnification of camera zooming parameter due to the difficulty of dealing with changes in intrinsic camera parameters. To realize the usage of ...
  • Relation between Location of Information Displayed by Augmented Reality and User's Memorization 
    Yuichiro Fujimoto,Goshiro Yamamoto,Hirokazu Kato,Jun Miyazaki (ACM, 2012-3)
    This study aims to investigate the effectiveness of Augmented Reality (AR) on user's memory skills when it is used as an information display method. By definition, AR is a technology which displays virtual images on the ...
  • Appearance Control by Projector Camera Feedback for Visually Impaired 
    Toshiyuki Amano,Hirokazu Kato (IEEE, 2010-06)
    Visual impairment is a common problem for people worldwide. The projector-based AR technique has the ability to change the appearance of real objects, and it can help to improve visibility for the visually impaired. We ...

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