77256 20190709135435.0 doi 10.1145/3072959.3073668 sideral 101172 ART-2017-101172 eng (orcid)0000-0002-5169-7042 Serrano, Ana Universidad de Zaragoza Movie editing and cognitive event segmentation in virtual reality video 2017 Access copy available to the general public Unrestricted Traditional cinematography has relied for over a century on a well-established set of editing rules, called continuity editing, to create a sense of situational continuity. Despite massive changes in visual content across cuts, viewers in general experience no trouble perceiving the discontinuous flow of information as a coherent set of events. However, Virtual Reality (VR) movies are intrinsically different from traditional movies in that the viewer controls the camera orientation at all times. As a consequence, common editing techniques that rely on camera orientations, zooms, etc., cannot be used. In this paper we investigate key relevant questions to understand how well traditional movie editing carries over to VR, such as: Does the perception of continuity hold across edit boundaries? Under which conditions? Does viewers' observational behavior change after the cuts? To do so, we rely on recent cognition studies and the event segmentation theory, which states that our brains segment continuous actions into a series of discrete, meaningful events. We first replicate one of these studies to assess whether the predictions of such theory can be applied to VR. We next gather gaze data from viewers watching VR videos containing different edits with varying parameters, and provide the first systematic analysis of viewers' behavior and the perception of continuity in VR. From this analysis we make a series of relevant findings; for instance, our data suggests that predictions from the cognitive event segmentation theory are useful guides for VR editing; that different types of edits are equally well understood in terms of continuity; and that spatial misalignments between regions of interest at the edit boundaries favor a more exploratory behavior even after viewers have fixated on a new region of interest. In addition, we propose a number of metrics to describe viewers' attentional behavior in VR. We believe the insights derived from our work can be useful as guidelines for VR content creation. info:eu-repo/grantAgreement/ES/MINECO/IMAGER-TIN2016-79710-P info:eu-repo/grantAgreement/ES/MINECO/TIN2014-61696-EXP info:eu-repo/grantAgreement/ES/MINECO/TIN2016-78753-P info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 4.384 2017 COMPUTER SCIENCE, SOFTWARE ENGINEERING 3 / 104 = 0.029 2017 Q1 T1 1.344 2017 Computer Graphics and Computer-Aided Design 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Sitzmann, Vincent Ruiz-Borau, Jaime Wetzstein, Gordon (orcid)0000-0002-7503-7022 Gutierrez, Diego Universidad de Zaragoza (orcid)0000-0003-0060-7278 Masia, Belen Universidad de Zaragoza 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5007 570 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Lenguajes y Sistemas Inf. 36, 4 (2017), 47 [12 pp.] ACM trans. graph. ACM TRANSACTIONS ON GRAPHICS 0730-0301 14746589 http://zaguan.unizar.es/record/77256/files/texto_completo.pdf Postprint 86248 http://zaguan.unizar.es/record/77256/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:77256 articulos driver 2019-07-09-11:33:29 ARTICLE