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 publicationACE 2014 - 11th Advances in Computer Entertainment Technology Conference, Proceedings
EditorsSeng W. Loke, Arkady Zaslavsky, Lars Kulik, Evaggelia Pitoura
PublisherAssociation for Computing Machinery
ISBN (Electronic)9781450329453, 9781450331852, 9781450333047, 9781450334013
Publication statusPublished - 2014 Nov 11
Event11th Advances in Computer Entertainment Technology Conference, ACE 2014 - Funchal, Madeira, Portugal
Duration: 2014 Nov 112014 Nov 14

Publication series

NameACM International Conference Proceeding Series


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

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


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