Student written Research Laboratory Guidebook 2025Nagaoka University of Technology

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Image and Media Information Laboratory

Professor / IWAHASHI Masahiro  Associate Professor / HARAKAWA Ryosuke  Technical Specialist / YAMAURA Kentaro
  • Multimedia signal prcessing to support AI and IoT!
  • Research using images, sounds, texts, or anything multimedia !
  • Let's collaborate with any fields and industries!

Professor / IWAHASHI Masahiro, Associate Professor / HARAKAWA Ryosuke, Technical Specialist / YAMAURA Kentaro
Prof. Iwahashi is a person with wide range of knowledge in image processing, who actively conducts various joint researches. Associate Prof. Harakawa is a specialist in multimedia and a very eager teacher. Meanwhile, Mr. Yamaura is a person in charge of the technicals and will gladly help you if you were facing any technical problem.

Research Content

As researches on multimedia signal processing to support AI and IoT technologies, we conduct researches on "image restoration," which restores desired images from incomplete observed images, and "image
recognition," which detects objects and classifies their states based on deep learning. Moreover, as researches for multimedia data such as sounds and texts, we conduct researches on "semantic understanding" to reveal useful information from big data in the cyberspace. Notably, we often collaborate with researchers and companies in various fields such as robotics, physics, biology, environment, disaster prevention, and education.

Lab seminar

A Day in the Lab

In this laboratory, we hold seminars to discuss our researches and to train for presentations. No need to worry about the lack of experience or knowledge, because you can always ask our professors and/or refer the books. In addition, many members actively present their researches through conferences and papers, both in Japan and abroad. We often have held futsal/softball tournaments, cherry blossom viewing, Nagaoka fireworks, and laboratory trips among members. After that, we have continued to hold various events using online tools and other means, and our members get along with each other.

Lab trip (Kusatsu Onsen)

Thesis Subjects

  • (D)A Study on Multimodal Feature Fusion for Personalized Retrieval and Recommendation
  • (M)A Study on a Discrimination Method of Trend Clusters Obtained from SNS Data Related to Natural Disasters
  • (M)A Study on Extracting Regions Using Brightness Variation in z-stack Images of Oleaginous Yeast

The number of
PhD Graduates


Major employers of Graduates

  • Tokyo Electric Power Company Holdings, Inc.
  • teamLab Inc.
  • SPRIX Inc.
  • ARAV Inc.
  • JASTEC Co.,Ltd.
  • East Japan Railway Company
  • SCSK Corporation
  • National Institute of Technology, Yuge Colleage
Writer : MIZUMA Rei, Electrical, Electronics and Information Engineering
(Salesian Polytechnic)