Academic Staff and Fellows

Associate Professor Doctor of Engineering (D.E.)
Department/Informatics  Graduate school/Electronic Engineering

Our research goal is to extract semantic information (e.g., objects, activities, scenes, events, etc.) from multimedia data. Our main approach to this is to analyse patterns, relations and anomalies underlying in different forms of data (e.g., image, video, audio, text, etc.).

Three main topics in my multimedia understanding research

Research Area Multimedia Information Processing, Machine Learning, Data Mining, Human Activity Recognition
Teaching (Undergraduate Course) Machine Learning, Digital Signal Processing
Teaching (Graduate Course) Multimedia Understanding
Research Interests Large-scale Video Retrieval
Visual-Semantic Alignment
Sensor-based Human Activity Recognition
Multimodal Analysis
Selected Publications (1) Example-based 3D Trajectory Extraction of Objects from 2D Videos, IEEE Transactions on Circuits and Systems for Video Technology, Vol. 28, No. 9, pp. 2246-2260, 2018 (Project page)
(2) Comparison of Feature Learning Methods for Human Activity Recognition using Wearable Sensors, Sensors, Vol. 18, No. 2, Article No. 679, 2018 (Codes and datasets)
(3) Sergey Kosov, Kimiaki Shirahama, Chen Li and Marcin Grzegorzek: Environmental Microorganism Classification Using Conditional Random Fields and Deep Convolutional Neural Networks, Pattern Recognition, Vol. 77, pp. 248-261, 2018 (Codes and dataset)
Research and Achievements
Affiliated Academic Societies The Institute of Image Information and Television Engineers in Japan (ITE), Information Processing Society of Japan (IPSJ), Institute of Electronic, Information and Communication Engineering in Japan (IEICE), ACM SIGKDD, ACM SIGMM
External Activity Program Committee for ITIB 2018, 2019 and 2020, Program Committee for ACM Multimedia Asia 2019, Program Committee for ACM Multimedia 2019, Co-publicity chair for CSII 2019, Program Committee for ICIS 2016, Technical Program Committee for MMEDIA 2015 and 2016
(Undergraduate Course)
Kobe University
(Master's/Doctral Course)
Kobe University
Title of Thesis, Institute, Date Intelligent Video Processing Using Data Mining Techniques, Kobe University, March 2011
Biography Assistant Professor in Kobe University (2007-2011), Assistant Professor in Muroran Institute of Technology (2012-2014), Postdoc Researcher via Postdoctoral Fellowship of Japan Society for the Promotion of Science (JSPS) (2013-2015), Experienced Postdoc Researcher in University of Siegen (2015-2018), Associate Professor in Kindai University
Awards Top performance at TRECVID 2012 Semantic Indexing (lite) task sponsored by National Institute of Standards and Technology (NIST)
Second place at TRECVID 2016 Ad-hoc Video Search (AVS) (manually-assisted) task sponsored by National Institute of Standards and Technology (NIST)
Third place at TRECVID 2018 Ad-hoc Video Search (AVS) (manually-assisted) task sponsored by National Institute of Standards and Technology (NIST)
CBM Honors Paper 2018 (awarded to "A General Framework for Sensor-based Human Activity Recognition")
Message to Students Although you have a lot of things to do, please consider your "health" the most important! With the healthy body, you can try your best and succeed in your study, sports activity, etc.

Research Group for Multimedia Understanding

Office Location Building 38 N-302
E-mail shirahama(at)
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Laboratory URL

Academic Staff and Fellows