AirRacquet System

Team InnovationBjoern Doering

Jonah Peranson

Ali-Akber Saifee

Wendy Wang

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Introduction

Purpose: Gesture based racquet game with intuitive interface

Design: Iterative, user centered, changes motivated by feedback

Scope: Entertainment, training, research

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Conventional Systems

Improvement has been made in graphics and flexibility

User interface has remained static

User is more of puppet-master than player

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Benefits of AirRacquet

User is immersed into the environment

Gestures provide natural mapping to actual game play

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Design GoalsTypical User: Over the age of 12, familiar with ping-

pong, no knowledge of supported gestures needed

Focused on: Conceptual Model Feedback: Visual and audio Natural Mapping: Gestures and ball behavior Visibility: Menus and Game setting

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Storyboard

Menu Module

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Storyboard

Game Module

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Paper PrototypeFeedback

Possibility of error in menu selection

Unclear vocabulary

Improvements

Addition of deliberate selection gesture

Addition of “Add Default Setting”

Change of the word “Gravity” to “Bounciness”

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Initial Prototype Ball size varies

with proximity Racquet moves

with the position of the hand

Score displayed Help figure and

messages displayed

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Initial Prototype – Feedback

Strengths

Good visibility of the menu depth

Easy to grab the game concept

Game Weakness

Difficult to hit the ball Distracting instructions

flashing on the net Lack of feedback

during game play Pause state unclear

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Alpha system

Major change: Ping-pong game

Adapted from Cannon Smash (http://cannonsmash.sourceforge.net/)

Perspective view Position of ball One Racquet Two

target ellipses (Forehand and backhand)

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Alpha system

Options menu simplified

Start game in Main Menu

Feedback about winning and losing points

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Beta System

Pause figure moved Pause gesture changed Visibility: Colors modified How to: Audio added Gestures incorporated

Hitting/Clicking Selecting (Menu mode) Moving around (Game

mode)

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HCI Principles

User centric approach Iterative design Importance of conceptual model Perception of system Feedback Natural mappings Gestures

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Future Improvements

Haptic feedback – ball impact on paddle

Network functionality – 2 player mode

Improved gesture recognition Rendering of the game setting

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Conclusion

User centered design Iterative Systems must incorporate proper

conceptual model Importance of natural mapping Importance of evaluating the user and the

environment first

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Conclusion

User centered design Iterative Systems must incorporate proper

conceptual model Importance of natural mapping Importance of evaluating the user and the

environment first

Questions?