Kengo Terasawa

DepartmentDepartment of Media Architecture
Specialized FieldsImage Processing, Infomation Retrieval, Algorithm
Subjects in ChargeLinear Algebra I, Linear Algebra II, Basic Programming, Advanced Topics in Media Information Studies
Academic BackgroundGraduate School of Future University Hakodate
DegreeDoctor (Systems Information Science)
Personal HistoryHe received B.Eng. and M.Eng. degrees from Dept. of Civil Engineering, the University of Tokyo in 1998 and 2000, respectively. From 2000 to 2003, he was a civil engineer at Japan Highway Public Corrporation. From 2003, he has been engaded in the study of computer science and received Ph.D degree from Future University Hakodate in 2006. From 2006 to 2009, he was a researcher at Hokkaido University. From 2009, he has been with the faculty of Future University Hakodate, where he is currently an associate professor. From 2008 to 2012, he has also been a PRESTO esearcher at Japan Science and Technology Agency (JST).
Starting Time of Employment2009

Research Contents

My research interests contain image processing, information retrieval, and algorithm. Currently, I am mainly engaged in developping the computer systems for the document images that are hardly machine-readable, such as historical brush-written documents.
The product "document image retrieval system", the word spotting engine applicable via the Internet, is published at
The further information is available at

Attractive Factors of My Research

For the study of computer science, all I need is just a computer. I can try my ideas freely and can get a result immediately. Get an idea, try it, and be happy or unhappy depending on the result --- isn' t it a pleasure?


The online word spotting engine is published for three applications. First one is the website Second one is the commercial software released by a publisher. Last one is the web service released by another company. In addition, we are making collaborating with humanity researches and trying to apply information technology to the study of humanities.
The paper "Approximate Nearest Neighbor Search for a Dataset of Normalized Vectors" recieved the IEICE Best Paper Award 2009.

Major Books and Papers

Kengo Terasawa and Yuzuru Tanaka
"Approximate Nearest Neighbor Search for a Dataset of Normalized Vectors"
IEICE Transactions on Information and Systems, vol.E92-D, No.9, pp.1609-1619, Sep. 2009.
* This paper won IEICE Best Paper Award on March 22, 2010.

Kengo Terasawa and Yuzuru Tanaka,
``Locality Sensitive Pseudo-Code for Document Images,''
International Conference on Documents Analysis and Recognition, ICDAR2007, vol.1, pp.73-77, Curitiba, Brazil, Sept.23-26, 2007.

Kengo Terasawa, Takeshi Nagasaki, and Toshio Kawashima, ``Error Evaluation of Scale-Invariant Local Descriptor and Its Application to Image Indexing,'' Electronics and Communications in Japan (Part III: Fundamental Electronic Science), vol. 90, no. 2, pp.31-39, Oct. 2006.)

Message to Students

To engage in the study at the graduate school will surely reward you, I believe. You will acquire not only the knowledge on the specialized subject, but also the skill of how to think, and how to communicate. Such skills are indispensable for all types of occupations nowadays.
If you want to acquire the skills you need to live, please come study at our school!