A natural language interface with casual users for crowd animation

Wen-Yun Liu, Sai-Keung Wong*, Chien-Yuan Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We develop an interface that bridges crowd simulation and natural language processing techniques so that casual users can produce crowd animation by text input. The interface adopts a parser and a tagger to analyze simple English sentences to convert them into intermediate data structures that encapsulate the essential elements of crowds. There are five stages: preprocessing, parsing input sentences, crowd generation, animation adjustment, and crowd animation. Our system supports basic behaviors including standing, walking, running, escaping, being attracted, and queuing. We conducted a user experience study to evaluate the interface. The results show that the interface is user-friendly for casual users to produce crowd animation.

Original languageEnglish
Article numbere1965
Number of pages10
JournalComputer Animation and Virtual Worlds
Issue number4-5
StatePublished - 4 Sep 2020


  • crowd animation
  • interactive interface
  • natural language processing

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