Hokkaido University Research Profiles

Japanese
Open Close

Media information processing: 1

Numbers of lines 20 50 No Page Break Theme Icons
  • Life Sciences
  • Information and Communication
  • Nanotechnology / Materials
  • Manufacturing Technology
  • Human and Social Sciences
  • Energy
  • Environment
  • Tourism / Community development
  • Arctic Research
  • Social Infrastructure
  • Open Facilities
  • High Value-added Media Information and Communication Technology

    High value-added media information and communication technology using sub-channel data communication with information hiding technology

    We are researching high value-added media information and communication technology that can add new functions while maintaining compatibility with standard formats, by using information hiding technology that is usually used as an information security method.

    Research

    This research is aimed to add value to media information and communication technology using sub-channel data communication with information hiding technology.
    As an application example, this study investigates high-fidelity sound of the voice on the telephone. With the proposed method, information for widening the bandwidth is embedded in the voice data in advance at the transmitter side, so that the voice can have high-fidelity on the receiver side.
    This research also investigates a method for detecting tampering by embedding information that can guarantee the originality by image data. Figures 1 to 3 show an example of the proposed method for detecting tampering with a car license plate. When an image is tampered with, the corresponding part of the image is revealed, and the proposed method will not only detect the tampering, but also the tampered part.

    More
    Naofumi Aoki Assistant Professor
    Faculty of Information Science and Technology
    Hokkaido University Researcher Directory

Pickup View All