Abstract
We describe a series of algorithms which automatically control camera position in a virtual environment while a user is engaged in a simulated face-to-face dialog with a single virtual agent. The common objective of the algorithms is to increase user engagement with the interaction. In our work, we describe three different automated camera control systems that: (1) control the camera’s position based on topic changes in dialog; (2) use sentiment analysis to control the camera-to-agent distance; and (3) adjust the camera’s depth-of-field based on “important” segments of the dialog. Evaluation studies of each method are described. We find that changing camera position based on topic shifts results in significant increases in a self-reported measure of engagement, while the other methods seem to actually decrease user engagement. Interpretations and ramifications of the results are discussed.
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References
Lehmann, J., Lalmas, M., Yom-Tov, E., Dupret, G.: Models of user engagement. In: Masthoff, J., Mobasher, B., Desmarais, M.C., Nkambou, R. (eds.) UMAP 2012. LNCS, vol. 7379, pp. 164–175. Springer, Heidelberg (2012)
Bickmore, T., Schulman, D., Yin, L.: Maintaining engagement in long-term interventions with relational agents. Int. J. Appl. AI 24, 648–666 (2010)
Bickmore, T., Schulman, D., Yin, L.: Engagement vs. deceit: virtual humans with human autobiographies. In: Ruttkay, Z., Kipp, M., Nijholt, A., Vilhjálmsson, H.H. (eds.) IVA 2009. LNCS, vol. 5773, pp. 6–19. Springer, Heidelberg (2009)
Battaglino, C., Bickmore, T.: Increasing engagement with conversational agents using co-constructed storytelling. In: INT8 workshop, Santa Cruz, CA (2015)
Smith, J.: GrandChair: conversational collection of grandparent’s stories. MIT (2000)
Christie, M., Machap, R., Normand, J.-M., Olivier, P., Pickering, J.H.: Virtual camera planning: a survey. In: Butz, A., Fisher, B., Krüger, A., Olivier, P. (eds.) SG 2005. LNCS, vol. 3638, pp. 40–52. Springer, Heidelberg (2005)
Ortony, A., Clore, G., Collins, A.: The Cognitive Structure of Emotions. Cambridge University Press, Cambridge (1988)
de Melo, C., Paiva, A.C.: Expression of emotions in virtual humans using lights, shadows, composition and filters. In: Paiva, A.C., Prada, R., Picard, R.W. (eds.) ACII 2007. LNCS, vol. 4738, pp. 546–557. Springer, Heidelberg (2007)
Canini, L., Benini, S., Leonardi, R.: Affective analysis on patterns of shot types in movies. In: 7th International Symposium on Image and Signal Processing and Analysis (ISPA), pp. 253–258 (2011)
Rui, Y., Gupta, A., Grudin, J.: Videography for telepresentations. In: CHI 2003, pp. 457–464 (2003)
Calahan, S.: Storytelling through lighting: a computer graphics perspective (1996)
Cassell, J., Vilhjálmsson, H., Bickmore, T.: BEAT: the behavior expression animation toolkit. In: SIGGRAPH 2001, pp. 477–486 (2001)
Nowak, K., Biocca, F.: The effect of the agency and anthropomorphism on users sense of telepresence, copresence, and social presence in virtual environments. Presence 12, 481–494 (2003)
DeVault, D., Mell, J., Gratch, J.: Toward natural turn-taking in a virtual human negotiation agent. In: AAAI 2015 Spring Symposium on Turn-taking and Coordination in Human-Machine Interaction (2015)
Marcus, B., Simkin, L.: The stages of exercise behavior. J. Sports Med. Phys. Fit. 33, 83–88 (1993)
Cassell, J., Nakano, Y., Bickmore, T., Sidner, C., Rich, C.: Non-verbal cues for discourse structure. In: Association for Computational Linguistics, pp. 106–115 (2001)
Blom, J., Gumperz, J.: Social meaning in linguistic structures: code switching in northern norway. In: Gumperz, J., Hymes, D. (eds.) Directions in Sociolinguistics. Holt, Rinehart, and Winston, New York (1972)
Schiffrin, D.: Discourse Markers. Cambridge University Press, Cambridge (1987)
Arijan, D.: Grammar of the Film Language. Silman-James, Los Angeles (1976)
Tannen, D. (ed.): Framing in Discourse. Oxford University Press, New York (1993)
Bickmore, T., Picard, R.: Establishing and Maintaining Long-Term Human-Computer Relationships. ACM Trans. Comput. Hum. Interact. 12, 293–327 (2005)
Manning, C., Surdeanu, M., Bauer, J., Finkel, J., Bethard, S., McClosky, D.: The stanford CoreNLP natural language processing toolkit. In: Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics, pp. 55–60 (2014)
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Ring, L., Utami, D., Olafsson, S., Bickmore, T. (2016). Increasing Engagement with Virtual Agents Using Automatic Camera Motion. In: Traum, D., Swartout, W., Khooshabeh, P., Kopp, S., Scherer, S., Leuski, A. (eds) Intelligent Virtual Agents. IVA 2016. Lecture Notes in Computer Science(), vol 10011. Springer, Cham. https://doi.org/10.1007/978-3-319-47665-0_3
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