Perception of basic emotion blends from facial expressions of virtual characters: pure, mixed, or complex?

Meeri Mäkäräinen, Jari Kätsyri, Tapio Takala

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

As animated virtual characters in games, movies and other applications become more humanlike, it becomes more and more important to be able to imitate the complicated facial behaviour of a real human. So far, facial expression animation and research have been dominated by the basic emotions view, limited to the six universal expressions: anger, disgust, fear, joy, sadness and surprise. More complex facial expressions can be created by blending these basic emotions, but it is not clear how these blends are perceived. Are they still perceived as basic emotions or combinations of basic emotions, or are they perceived as expressions of more complex emotions? We used a series of online questionnaires to study the perception of all pairwise blends of basic emotions. The blends were produced as a sum of facial muscle activations in the two basic emotions, using a physically-based, animated face model. Our main finding is that several basic emotion blends with an opposite valence are perceived as complex emotions that are neither pure emotions nor their blends. Blends of basic emotions with a similar valence are typically perceived as pure basic emotions (e.g., a blend of anger and disgust is perceived as pure anger). Only one of the blends (joy+surprise) was perceived as a blend of two different basic emotions.
Original languageEnglish
Title of host publicationProceedings of 26th International Conference on Computer Graphics, Visualization and Computer Vision
EditorsVaclav Skala
Place of PublicationPlzen, Czech Republic
PublisherVaclav Skala Union Agency
Pages135-142
Number of pages8
DOIs
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Computer Graphics, Visualization and Computer Vision - Pilsen, Czech Republic
Duration: 28 May 20181 Jun 2018
Conference number: 26

Publication series

NameComputer Science Research Notes
PublisherWSCG
Volume2802
ISSN (Print)2464-4617
ISSN (Electronic)1213-6964

Conference

ConferenceInternational Conference on Computer Graphics, Visualization and Computer Vision
CountryCzech Republic
CityPilsen
Period28/05/201801/06/2018

Keywords

  • virtual agent
  • basic emotions
  • facial expressions
  • mixed emotions
  • affective computing
  • perception

Fingerprint Dive into the research topics of 'Perception of basic emotion blends from facial expressions of virtual characters: pure, mixed, or complex?'. Together they form a unique fingerprint.

  • Cite this

    Mäkäräinen, M., Kätsyri, J., & Takala, T. (2018). Perception of basic emotion blends from facial expressions of virtual characters: pure, mixed, or complex? In V. Skala (Ed.), Proceedings of 26th International Conference on Computer Graphics, Visualization and Computer Vision (pp. 135-142). (Computer Science Research Notes; Vol. 2802). Vaclav Skala Union Agency. https://doi.org/10.24132/CSRN.2018.2802.17