Study at TCU


Name MUKAI Nobuhiko
Official Title Professor
Affiliation Computer Science, Information Technology
Profile Nobuhiko Mukai is a professor of Graduate School of Integrative Science and Engineering, Tokyo City University. He received his B.E., M.E., and Ph.D. degrees from Osaka University in 1983, 1985, and 2001, respectively, and also received his M.E. from Cornell University in the USA in 1997. He started to work at Mitsubishi Electric Corporation and changed to work as an associate professor at Musashi Institute of Technology in 2002. He is currently a professor at Tokyo City University since 2007, and a visiting professor of the Institute of Industrial Science at the University of Tokyo since 2020. His research interests are mainly computer graphics, image processing, and medical applications. The research area in the computer graphics field are simulation and visualization, including virtual reality and augmented reality, which combines real images and virtual objects created by computer graphics. On the other hand, the research area in the image processing are image creation and image recognition, which includes pattern recognition and deep learning. In addition, he is engaged in the medical applications using computer graphics and image processing, which performs the simulations using in vivo models generated from medical images obtained by CT (Computer Tomography), MRI (Magnetic Resonance Imaging), or US (Ultrasound).
Research Field(Keyword & Summary)
  1. 1. Computer graphics

    Simulation and visualization of natural phenomena and human behavior. Natural phenomena include reflection and refraction on grass objects, fluid dynamics, including waterfall, viscoelastic fluid, and candle flame. Human behavior includes crowd simulation, personal behavior, and walking action with memory.

  2. 2. Virtual reality

    Real-time training systems with haptic force feedback for flower arrangement, diet meals, and kitchen knife sharpener.

  3. 3. Image processing

    New image creation such as 3 dimesionalizing of 2 dimensional image, synthesizing multiple images, and image inpainting.

  4. 4. Image recognition

    Pattern recognition and deep learning for Japanese sign language, automobile speed, and human identification.

  5. 5. Medical applications

    3 dimensional model construction and simulations for preoperative planning and rehabilitation such as pressure simulation according to the blood flow from the left ventricle to the aorta, droplet simulation for cerebral aneurysm embolization, drug delivery simulation in the abdominal aorta aneurysm, and tongue movement visualization based on ultrasound images.

Representative Papers
  1. 1. Takuya Natsume, Masamichi Oishi, Marie Oshima, and Nobuhiko Mukai: Droplet Formulation Method for Viscous Fluid Injection Considering the Effect of Liquid-Liquid Two-Phase Flow, ITE Transactions on Media Technology and Applications (MTA), Vol.9, No.1, pp.33-41 (Jan., 2021)
  2. 2. Nobuhiko Mukai, Kazuhiro Aoyama, and Youngha Chang: Pressure Simulation in the Heart with Valve Interlocking and Isovolumetric Contraction, SIGGRAPH Asia Posters, Session 2: Visualization, Article 13 (Dec. 2020)
  3. 3. Nobuhiko Mukai, Kazuhiro Aoyama, Takuya Natsume, and Youngha Chang: Particle Based Blood Pressure Simulation in the Aorta with the Model Generated from CT Images, Simulation and Modeling Methodologies, Technologies and Applications (7th International Conference SIMULTECH 2017, Madrid, Spain, July 26-28, 2017, Revised Selected Papers), Springer, Advances in Intelligent Systems and Computing 873, DOI 978-3-030-01470-4_6, pp.102-113 (Jan. 2019)
  4. 4. Nobuhiko Mukai, Taishi Nishikawa, and Youngha Chang: Evaluation of Stretched Thread Lengths in Spinnability Simulations, SIGGRAPH Posters, USB, Research (August 2018)
  5. 5. Nobuhiko Mukai, Yuki Matsuura, Masamichi Oishi, and Marie Oshima: Chromatic Aberration Based Depth Estimation in a Fluid Field, Journal of Image and Graphics, Vol.6, No.1, pp.59-63 DOI: 10.18178 (June, 2018)
  6. 6. Nobuhiko Mukai, Tomoki Shibamori, and Youngha Chang: Profile Recognition based on Co-training, SIGGRAPH Asia Posters, USB, Imaging and Video Session (Dec. 2016)
  7. 7. Nobuhiko Mukai, Yuto Hizono, and Youngha Chang: Waterfall Simulation with Spray Cloud in different Environments, The Journal of the Society for Art and Science, Vol.15, No.3, pp.111-119 (Sep., 2016)
  8. 8. Nobuhiko Mukai, Yusuke Abe, Youngha Chang, Kiyomi Niki, and Shuichiro Takanashi: Visualization of Pressure and Stress Distributions in Aortic Valve Simulation by Considering Heart's Pulsation and Axial Flow, The Journal of the Society for Art and Science, Vol.14, No.1, pp.1-8 (March, 2015)
  9. 9. Nobuhiko Mukai, Yoshihiro Tatefuku, Youngha Chang, Kiyomi Niki, and Shuichiro Takanashi: Automatic Extraction of the Aorta and The Measurement of Its Diameter, British Journal of Medicine & Medical Research, Vol.4, No.2, pp.671-682 (Oct. 2013)
  10. 10. Nobuhiko Mukai, Yoshihiro Tatefuku, Kiyomi Niki, and Shuichiro Takanashi: Construction Method of 3D Aorta Model, Journal of Mathematics and System Science, Vol.2, No.4, pp.272-279 (April 2012)
  1. 1. M. Harada, N. Mukai, K. Muroi, and A. Yoshida: Virtual peeling sense generation system, JPB004315266 (2009)
  2. 2. N. Mukai, M. Harada, K. Muroi, and A. Yoshida: Deformative curbed surface display device, JPB004273219 (2009)
  3. 3. N. Mukai, M. Harada, and K. Muroi: MEDICAL SIMULATOR SYSTEM AND MEDICAL SIMULATOR NOTIFYING APPARATUS, United States Patent 6,126,450 (1999)
Award 1. Best Paper Award: Particle based Waterfall Simulation with Spray Cloud Emerging from Basin, SIMULTECH 2018 (July, 2018)
2. Letter of appreciation: Contributions to the settlement of a series of arson cases, Soka Police Station in Saitama Prefectural Police (June 2017)
3. Research Encouragement Award: Automatic Generation Method of Weathered Textures, The Institute of Image Information and Television Engineers (May 2003)
Grant-in-Aid for Scientific Research Support: Japan Society for Promotion of Science (JSPS)
Research Grants/Projects including subsidies, donations, grants, etc. Grands-in-Aid for Scientific Research
1. 21K11915 (2021-2023): Blood Flow Visualization and Verification of Pressure Change Considering
Valve Interlocking and Isovolumetric Contraction and Relaxation of the Left Ventricle
2. 18K11330 (2018-2020): Blood Flow Visualization based on a Particle Simulation from the Left
Ventricle to the Aorta and the Verification of the Pressure Change
3. 15K00176 (2015-2017): Study on Analysis of Blood Flow and Aortic Valve Behavior by Considering
Heartbeat and Axial-flow
4. 24500130 (2012-2014): A Study on Visualization of Stress Distribution loaded on the Aortic Valve
5. 22592263 (2012): Development of Visual Feedback Speech Therapy Technique based on Four-
dimensional Tongue Movement Model using Ultrasound
6. 21500125 (2009-2011): Deformation Method of a Blood Vessel by Considering the Inner Pressure
for the Purpose of Surgical Simulators
7. 19500112 (2007-2008): Fast Algorithm on Simultaneous Process of Blood Vessel Deformation
and Bleeding for Surgical Simulators
Affiliated academic society (Membership type) ACM, INSTICC, SAS, VRSJ, IEICE, ITE, IPSJ, IIEEJ, JSUM, and JSAE (Member)
Education Field (Undergraduate level) Introduction to Computer Systems, Image Processing, Computer Graphics
Education Field (Graduate level) Digital Image Processing, Adv., Image Analysis, Adv.