Thank you for dropping by my homepage.
I am currently a professor of the Department of Computer Science and  Graduate School of Information Security in  Korea Advanced Institute of Science and Technology (KAIST).

Here you will find some infomation on what I've been working on, such as my research interest, publications, etc. You can find the link to the publications in PDF file format. You will also find the activity of the MMC(MultiMedia Computing) Lab.

Google Scholar Citation :

Website for Image Forensic Tool :

 YTN Science News and Interview :


Our MMC Lab. have won 3rd  place at ‘the 2018 Artificial Intelligence R&D Challenge Competition.’ The competition was organized by the Ministry of Science and ICT. As a reward, research grant was given to us.  In near future, final competition will hold among the top 3 teams. Another huge amounts of research fund will be given to the 1st team.

More detailed thing is here :


New Digital Watermarking Tool based on the Deep Neural Network has been developed in my Lab.. You can try the tool in the following web site :









Real-Time Computing(RTC) Lab. was established in 1986.  Research topics include real-time computing,  fault-tolerant computing, and image processing system.



MultiMedia Computing(MMC) Lab. was  re-established as research area was changed to  the multimedia computing including digital watermarking /  fingerprinting, multimedia forensics, and information  hiding.



Lab. Of Excellence(LOE). The MMC Lab. was only selected in KAIST as the very best quality Lab. of  the Universities in  Korea from the Korea Industrial Technology Foundation. 50 Labs in all were selected in science and engineering areas. The program was supported by the Ministry of Education & Human Resources Development, Ministry of  Commerce, Industry and Energy, and Ministry of Labor.




Center of Fusion Technology for Security(CFTS). It was sponsored by  the Korea Creative Content Agency, Korea Minting & Security Printing Corporation, National Research Foundation of Korea. Prof. Lee is the General Director of the CFTS.



National Research Lab.(NRL) of Fusion Technology for Security. It was supported by the Korea Science and Engineering Foundation funded by the Ministry of Science and Technology of Korea.



National Leading Research Lab.(NLRL) of Fusion Technology  for Security.  It is supported by the  National Research Foundation of Korea funded by the Ministry of Education, Science and Technology of Korea.