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An intelligent virtual human should not be limited to gesture, face and voice for the expression of emotion. The arts have shown us that complex affective states can be many others [1]. Thus, we previously proposed that lighting and the pixels in the screen could be used to express emotions in virtual humans [2]. Lighting expression inspires in the(More)
This work proposes an integrated model – the environment expression model – which supports storytelling through three channels: cinematography, illumination and music. Stories are modeled as a set of points of interest which can be characters, dialogues or sceneries. At each instant, audience's focus is drawn to the highest priority point of interest.(More)
Artists use words, lines, shapes, color, sound and their bodies to express emotions. Virtual humans use postures, gestures, face and voice to express emotions. Why are they limiting themselves to the body? The digital medium affords the expression of emotions using lights, camera, sound and the pixels in the screen itself. Thus, leveraging on accumulated(More)
Wrinkles, blushing, sweating and tears are physiological manifestations of emotions in humans. Therefore, the simulation of these phenomena is important for the goal of building believable virtual humans which interact naturally and effectively with humans. This paper describes a real-time model for the simulation of wrinkles, blushing, sweating and tears.(More)
This work proposes a real-time virtual human multimodal expression model. Five modalities explore the affordances of the body: deterministic, non-deterministic, gesticulation, facial and vocal expression. Deterministic expression is keyframe body animation. Non-deterministic expression is robotics-based procedural body animation. SABLE. Facial expression is(More)
There is growing evidence that emotion displays can impact people's decision making in negotiation. However, despite increasing interest in AI and HCI on negotiation as a means to resolve differences between humans and agents, emotion has been largely ignored. We explore how emotion displays in virtual agents impact people's decision making in human-agent(More)
This paper explores whether and how facial displays of emotion can impact emergence of cooperation in a social dilemma. Three experiments are described where participants play the iterated prisoner's dilemma with (computer) players that display emotion. Experiment 1 compares a cooperative player, whose displays reflect a goal of mutual cooperation, with a(More)
Computer games make learning fun and support learning through doing. Edutainment software tries to capitalize on this however, it has failed in reaching the levels of motivation and engagement seen in mainstream games. In this context, we have integrated a mainstream first-person shooter game, Counter-Strike, into the curriculum of our Autonomous Agents and(More)
Gesticulation is essential for the storytelling experience thus, virtual storytellers should be endowed with gesticulation expression. This work proposes a gesticulation expression model based on psycholinguistics. The model supports: (a) real-time gesticulation animation described as sequences of constraints on static (Portuguese Sign Language hand shapes,(More)