Data unification on a dataflow visual language for Vjing

Atsutomo Kobayashi, Buntarou Shizuki, Jiro Tanaka

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

Abstract

We have been developing ImproV, a datafiow visual language system for VJing, which is a form of live performance involving simultaneous manipulation of imagery. The dataflow of ImproV represents a processing flow of video data and video effects that are familiar to performers. ImproV is designed to construct a combination of several video effects on the fly, enabling performers to create new video effects while VJing. We previously conducted a user study for the first prototype of this system. The results show that two data types of dataflow confuse performers and that connecting nodes is time consuming. Therefore, we unified the data types into a single type called Video to simplify dataflow and developed adjustment knobs to reduce the frequency of node connecting.

The Video type, which is a sequence of images, is used to represent not only processing the target video but also parameters of video effects such as radius of blur and distance of translation. An adjustment knob on the input port is a new dataflow editing user interface for adjusting an effect parameter or opacity of a video fllowing through the dataflow. In ImproV, all input ports on all nodes have an adjustment knob. These adjustment knobs allow performers to quickly fade video and adjust parameters.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationDMS 2011 - 17th International Conference on Distributed Multimedia Systems
PublisherKnowledge Systems Institute Graduate School
Pages268-273
Number of pages6
ISBN (Electronic)1891706306
Publication statusPublished - 2011 Jan 1
Externally publishedYes
Event17th International Conference on Distributed Multimedia Systems, DMS 2011 - Florence, Italy
Duration: 2011 Aug 182011 Aug 20

Publication series

NameProceedings: DMS 2011 - 17th International Conference on Distributed Multimedia Systems

Other

Other17th International Conference on Distributed Multimedia Systems, DMS 2011
CountryItaly
CityFlorence
Period11/8/1811/8/20

Keywords

  • DJ
  • DJing
  • End-user programming
  • Image processing
  • Live video performance
  • VJ
  • VJing

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Human-Computer Interaction
  • Software

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