Premium
Perceptual evaluation of synthetic gaze jitter
Author(s) -
Krejtz Krzysztof,
Duchowski Andrew,
Zhou Heng,
Jörg Sophie,
Niedzielska Anna
Publication year - 2017
Publication title -
computer animation and virtual worlds
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.225
H-Index - 49
eISSN - 1546-427X
pISSN - 1546-4261
DOI - 10.1002/cav.1745
Subject(s) - jitter , computer science , naturalness , gaze , saccadic masking , motion (physics) , perception , noise (video) , eye movement , artificial intelligence , computer vision , eye tracking , speech recognition , human–computer interaction , psychology , telecommunications , physics , quantum mechanics , neuroscience , image (mathematics)
Abstract Eye movements are an essential part of non‐verbal behavior. Non‐player characters, as they occur in many games, communicate with the player through dialogue and non‐verbal behavior and can have a strong influence on player experience or even on gameplay. In this paper, we evaluate a procedural model designed to synthesize the subtleties of eye motion. More specifically, our model adds microsaccadic jitter and pupil unrest both modeled by 1/ f α or pink noise to the saccadic main sequence. In a series of perceptual two‐alternative forced‐choice experiments, we explore the perceived naturalness of different parameters of pink noise by comparing synthesized motions to rendered motion of recorded eye movements at extreme close shot and close shot distances. Our results show that, on average, animations based on a procedural model with pink noise were perceived and evaluated as highly natural, whereas data‐driven motion without any jitter or with unfiltered jitter were consistently selected as the least natural in appearance.