VRMixer: Mixing video and real world with video segmentation

Tatsunori Hirai, Satoshi Nakamura, Tsubasa Yumura, Shigeo Morishima

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)


    This paper presents VRMixer, a system that mixes real world and a video clip letting a user enter the video clip and realize a virtual co-starring role with people appearing in the clip. Our system constructs a simple virtual space by allocating video frames and the people appearing in the clip within the user's 3D space. By measuring the user's 3D depth in real time, the time space of the video clip and the user's 3D space become mixed. VRMixer automatically extracts human images from a video clip by using a video segmentation technique based on 3D graph cut segmentation that employs face detection to detach the human area from the background. A virtual 3D space (i.e., 2.5D space) is constructed by positioning the background in the back and the people in the front. In the video clip, the user can stand in front of or behind the people by using a depth camera. Real objects that are closer than the distance of the clip's background will become part of the constructed virtual 3D space. This synthesis creates a new image in which the user appears to be a part of the video clip, or in which people in the clip appear to enter the real world. We aim to realize "video reality," i.e., a mixture of reality and video clips using VRMixer.

    Original languageEnglish
    Title of host publicationACM International Conference Proceeding Series
    PublisherAssociation for Computing Machinery
    ISBN (Print)9781450329453
    Publication statusPublished - 2014 Nov 11
    Event11th Advances in Computer Entertainment Technology Conference, ACE 2014 - Funchal, Madeira, Portugal
    Duration: 2014 Nov 112014 Nov 14


    Other11th Advances in Computer Entertainment Technology Conference, ACE 2014
    CityFunchal, Madeira



    • 2.5D
    • 3D graph cut segmentation
    • Human extraction
    • Mixed media
    • Visual interaction

    ASJC Scopus subject areas

    • Human-Computer Interaction
    • Computer Networks and Communications
    • Computer Vision and Pattern Recognition
    • Software

    Cite this

    Hirai, T., Nakamura, S., Yumura, T., & Morishima, S. (2014). VRMixer: Mixing video and real world with video segmentation. In ACM International Conference Proceeding Series (Vol. 2014-November). [2663834] Association for Computing Machinery. https://doi.org/10.1145/2663806.2663834