Recent development of information and communication technologies (ICTs) enables us to store enormous amount of multimedia information. Meanwhile, various types of communications such as one-to-many, many-to-many, person-to-person and person-to-machine (e.g., computers, robots, and agents) communications for transmitting such multimedia information are emerged in diverse areas, and thus, a framework beyond the conventional one-to-one communication is strongly required. Such a framework should provide humans, who are the ultimate beneficiaries of these communications, with user-friendly, secure and smooth communications. To this end, we need intelligent information and communication systems which fuse the ambient intelligence technologies to assist the communications, the multimedia analysis and processing technologies, and security technologies. Such systems will realize communications beyond time, space, generations, languages, races, and cultures.

Our laboratory is dedicated to research and education on multimedia (i.e., images, videos, audio, and text) processing, media security, multimedia coding, digital signal processing, and so on, for realizing the intelligent information and communication systems mentioned above. Department of Information and Communication Technology which our laboratory belongs to is organized to cover all layers including the physical, network, and application layers, and our laboratory mainly works on the application layer.

Our principle is to cultivate world-class researchers and engineers through advanced researches. For this purpose, we encourage graduate students even in the master's course to submit papers to international conferences.

Our current research areas are as follows:

Multimedia content processing

  • Multimedia synchronization for video content generation
  • Image retrieval considering co-occurence relations among people
  • Event analysis in video using spatio-temporal patterns
  • Detecting intended human objects in home videos

  • Visualization of real environments

  • "Content-preserving" zoom-in view generation
  • Three-dimensional visualization of public spaces by integrating information from sensors (Digital Diorama)
  • Construction of three-dimensional models of environments

  • Information security

  • 3-mode net: anonymous communication system based on multiple encryption and probabilistic selections of actions

  • Information hiding

  • Position estimation using audio digital watermarking for prevention of movie theft in theaters
  • Real-time position estimation using audio digital watermarking
  • Recoverable privacy protection using information hiding technique

  • Past researches