ExpressionBot: An Emotive Lifelike Robotic Face for Face-to-Face Communication
Ali Mollahosseini, Gabriel Graitzer, Eric Borts, Stephen Conyers,, Richard M. Voyles, Ronald Cole, Mohammad H. Mahoor

TL;DR
ExpressionBot is a lifelike robotic face designed to enhance face-to-face communication by supporting expressive facial movements and eye contact, aiming to improve human-robot interaction realism.
Contribution
The paper introduces a novel robotic face with integrated hardware and facial animation system that closely mimics natural human expressions and gaze behavior.
Findings
Users accepted the robotic face well
Better recognition of facial expressions
Improved mutual eye gaze contact
Abstract
This article proposes an emotive lifelike robotic face, called ExpressionBot, that is designed to support verbal and non-verbal communication between the robot and humans, with the goal of closely modeling the dynamics of natural face-to-face communication. The proposed robotic head consists of two major components: 1) a hardware component that contains a small projector, a fish-eye lens, a custom-designed mask and a neck system with 3 degrees of freedom; 2) a facial animation system, projected onto the robotic mask, that is capable of presenting facial expressions, realistic eye movement, and accurate visual speech. We present three studies that compare Human-Robot Interaction with Human-Computer Interaction with a screen-based model of the avatar. The studies indicate that the robotic face is well accepted by users, with some advantages in recognition of facial expression and mutual…
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