Interactive virtual camerawork control based on Hidden Markov model

Koichi Emura, Terumasa Aoki, Hiroshi Yasuda

Research output: Contribution to journalArticlepeer-review


We developed a method of interactive virtual camerawork transition control based on a hidden Markov model with camera orientation as a hidden state and camera distance as an observable output. This method enables a novice user to interactively create a 3-D CG animation by suggesting appropriate camerawork based on the grammar of the film language. We conducted an experimental evaluation in which 363 novice users created 3-D CG animations with the digital movie director system using this method. The results showed a 30.7 % improvement in camera setting efficiency. Time spent writing dialogues increased by 14.7 % although the overall time taken to create the animation was shortened by 4.7 %, suggesting more time was available for creative thinking. Moreover, the ratio of shots that violated the grammar decreased from 9.9 to 4.8%.

Original languageEnglish
Pages (from-to)743-754
Number of pages12
JournalKyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers
Issue number5
Publication statusPublished - 2008 May

ASJC Scopus subject areas

  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Interactive virtual camerawork control based on Hidden Markov model'. Together they form a unique fingerprint.

Cite this