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  2. Hiroo Iwata

Hiroo Iwata

  (岩田 洋夫)

Profile Information

Affiliation
Professor, Faculty of Data Science, Musashino University
J-GLOBAL ID
200901054938589225
researchmap Member ID
1000047946

Research Areas

 2

Education

 2

Committee Memberships

 4

Awards

 6
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Papers

 268
  • IWATA,Hiroo
    計測と制御 = Journal of the Society of Instrument and Control Engineers, 31(1) 250-253, Jan, 1992  
  • 岩田, 洋夫
    Journal of Robotics and Mechatronics, 4 1, Jan, 1992  Peer-reviewed
  • 岩田, 洋夫
    Journal of the Japan Society of Mechanical Engineers, 95 883, Jan, 1992  
  • IWATA,Hiroo
    Journal of the Japan Society of Precision Engineering, 57(8) 1326-1329, Aug, 1991  
  • 岩田, 洋夫
    Journal of the Society of Biomechanisms, 15(3) 149-155, Aug, 1991  
  • 岩田, 洋夫
    計測と制御, 30(6) p472-477, Jun, 1991  
  • 岩田, 洋夫
    The Transactions of the Institute of Electrical Engineers of Japan. D, 111(5) 340-342, May, 1991  
  • 岩田, 洋夫
    機械の研究, 43(1) p213-218, Jan, 1991  
  • 岩田, 洋夫
    Journal of the Society of Instrument and Control Engineers, 30(6) 6-477, Jan, 1991  
  • IWATA,Hiroo
    Journal of the Japan Society for Simulation Technology, 9(4) 238-248, Dec, 1990  
    Artificial reality is a cinfiguration of human interface presenting computer-generated virtual world to sense organs such as eyes, ears, skins, and so on. The major objective of artificial reality is to amplify human inteligence by natural communication between computer and human being. This paper presents brief history of artificial reality and current topics : force display and virtual space walking system. Force display is a virtual space operation system, combining real-time computer graphics and force feedback device. This paper describes issues of artificial reality technology and examples of currently developed systems. Expected application areas and future direction are discussed.
  • 岩田, 洋夫
    Computer Graphics, ACM SIGGRAPH, 24(4) 4-170, Jan, 1990  Peer-reviewed
    A new configuration of Human Interface for 'artificial reality' is discussed. This paper describes a method of implementing force-feedback in a virtual space manipulation system. The system is composed of two subsystems, a real-time graphic display system and a tactile input device with reaction force generator. A specialized graphics computer (Stardent TITAN) provides a real-time image of the virtual space. A 9 degree-of-freedom manipulator has been developed as a tactile input device. The manipulator applies reaction forces to the fingers and palm of the operator. The generated forces are calculated from a solid model of the virtual space. The performance of the system is exemplified in manipulation of virtual solid objects such as a mockup for industrial design and a 3D animated character.
  • 岩田, 洋夫
    計測自動制御学会論文集, 24(2) p107-111, Feb, 1988  Peer-reviewed
  • NAKAGAKI,Yoshiyuki, IWATA,Hiroo, HIROSE,Michitaka, ISHII,Takemochi
    Transactions of the Japan Society of Mechanical Engineers. C, 53(496) 2699-2704, Dec, 1987  Peer-reviewed
    The emotional state of the operator is closely related to physiological data. The authors have developed a system for physiological data acquisition to observe emotional responses among multiple operators. In due consideration of cost, resolution and invasion, cardiac pulse and the skin temperature of the face are selected as indices of the emotional state. The authors have developed a handy -sized device measuring every cardiac pulse interval, which enables us to carry out field experiments. Skin temperature is remotely measured by thermography and image processing. An experiment involving an audience in a theater has been done, applying the above-mentioned system. Results of the experiment indicate that emotional response is observed from the audience member's cardiac pulse interval and skin temperature of face.
  • 石井, 威望, 広瀬, 通孝, 岩田, 洋夫
    自動車技術, 41(12) p1398-1403, Dec, 1987  
  • IWATA,HIROO
    IPSJ Journal, 28(8) 878-883, Aug, 1987  Peer-reviewed
    本論文では,画像メディアの画面設計を行う際のユーザ・モデルとして,人間の視覚情報処理の特性を定量的に表現する認知モデルの構築を行っている.本研究で提案する認知モデルは,ディスプレイ画面の情報量と,人間の視覚情報処理システムがそれの解釈を完了するまでに要する時間との関係を表すものである.ディスプレイ画面の情報量は,表示された図形パターンを線素に分解し,その総和を求めることによって表される.画面の情報量と認知所要時間の関係は指数分布に従うと仮定している.このモデルの応用として自動車用のナピゲーション・システムに用いられるグラフィック・ディスプレイをとり上げている.そして,地図画面の最適表示時間を認知モデルによって決定している.
  • IWATA,Hiroo, ISHII,Takemochi, HIROSE,Michitaka
    Transactions of the Japan Society of Mechanical Engineers. C, 53(486) 518-521, Feb, 1987  Peer-reviewed
    An ITV camera has an important role in teleoperation. This paper describes a method of controlling an ITV camera head according to the eye motion of the operator. The camera head has 3 degrees of freedom. Controllers of the camera head are destributed and built into the mechanical parts of each joint, so that they can be free from heavy wires. The eye motion of the operator is measured by image processing of the operator's face. An image of the face is obtained by a video camera mounted on the monitor display. The camera head rotates in the same direction as the visual line of the operator, so that the target is displayd at the center of the monitor display.
  • ISHII,Takemoti, IWATA,Hiroo
    Transactions of the Japan Society of Mechanical Engineers. C, 52(483) 2989-2992, Nov, 1986  
    This paper gives a method of analyzing human facial expressions by measuring the shape of the eye, brow and mouth, and of identifying emotional expressions. Facial expressions play a very important role in communication in our dailylife. Without any verbalized words we can often get considerable information about the emotional states of a person from their face. In order to analyze facial expressions, computer graphics of the human face is developed. In this experiment 4 parameters are selected. The automatic recognition of expressions is done by processing a digital image of a human face which is obtained by a video camera. Our final goal is to develope a method of identifying facial expressions which can be applied to Man-Machine interface.
  • ISHII Takemochi, IGUCHI Masakazu, HIROSE Michitaka, FUJIOKA Takehiko, IWATA Hiroo
    Transactions of the Society of Instrument and Control Engineers, 22(11) 1183-1188, 1986  
    Graphic display is an effective device for an automobile driver to get information. A driver, however, must pay attention to the outer environment, so there is not enough time to see the display. This paper describes an effective method of presenting graphic information to an automobile driver.<br>First, the graphic display is activated by fixation of the driver. The visual performance is measured by image processing of the driver's face. The driver's line of vision is detected by a position of the eye.<br>Second, optimum quantity of displayed information is determined by a model of a human visual information processing. The model describes the relationship between complexity of a displayed image and required time for the driver to understand it. Graphic image is designed by this model, so that the driver can get the information at a glance.

Misc.

 57
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Books and Other Publications

 17
  • Tamefusa, Shintaro, Yano, Hiroaki, Tanaka, Naoki, Saitou, Hideyuki, Iwata, Hiroo (Role: Contributor, Motion Improvement for Stairs Climbing and Descending with Gait Rehabilitation System)
    IEEE, Jan, 2010 (ISBN: 9781424477098)
    This paper describes the development of a gait rehabilitation system with a locomotion interface (LI) for stair climbing or descending. The LI consists of two 2 DOF manipulators equipped with footpads. These can move the user's feet while his or her body remains stationary. The footpads follow the prerecorded motion of the feet of a healthy individual. For gait training, the user progresses iteratively through successively more advanced modes. In this study, three modes, enforced stair climbing/descending, semi-voluntary stair climbing/descending, and real stair climbing/descending were used. Especially gait trajectories for the stairs climbing/descending were improved to realize valid weight shift motion. Comparisons were made between the modes for healthy individuals and a patient. The effectiveness of the system was examined using EMG and foot pressure data.
  • 舘暲, 佐藤誠, 廣瀬通孝編, 岩田, 洋夫 (Role: Editor)
    工業調査会, Dec, 2009
  • Yano, Hiroaki, Tamefusa, Shintaro, Tanaka, Naoki, Saitou, Hideyuki, Iwata, Hiroo (Role: Contributor, Gait Rehabilitation for Stair Climbing with a Locomotion Interface)
    IEEE, Jan, 2009 (ISBN: 9781424437887)
    This paper describes the development of a gait rehabilitation system with a locomotion interface (LI). The LI consists of two 2 DOF manipulators equipped with footpads. These can move the user's feet while his or her body remains stationary. The footpads follow the prerecorded motion of the feet of a healthy individual. For gait training, the user progresses iteratively through successively more advanced modes. In this study, three modes, enforced stair climbing, semi-voluntary stair climbing, and real stair climbing were used. Comparisons were made between the modes for healthy individuals and a patient. The effectiveness of the system was examined using NIRS and foot pressure distribution data.
  • Yano, Hiroaki, Miyamoto, Yuichi, Iwata, Hiroo (Role: Contributor, Haptic Interface for Perceiving Remote Object Using a Laser Range Finder)
    IEEE, Jan, 2009 (ISBN: 9781424438587)
    This paper describes development of a haptic interface using a laser range finder. The system consists of a laser range finder, a 1 degree-of-freedom haptic apparatus and a computer. The haptic apparatus can generate a reaction force based on a distance to a remote object that is measured by the laser range finder. A user can feel the shape of a remote object by holding this interface and pointing the object. Three haptic rendering algorithms were developed. Through some experiments, the effectiveness of this system was confirmed.
  • Martin, Grunwald, 岩田, 洋夫
    Brikhauser, Oct, 2008
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Presentations

 36
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Professional Memberships

 7
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Works

 7
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Research Projects

 19
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Industrial Property Rights

 1
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