Symbolic Input Robert W. Lindeman Worcester Polytechnic Institute - - PowerPoint PPT Presentation

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Symbolic Input Robert W. Lindeman Worcester Polytechnic Institute - - PowerPoint PPT Presentation

Oct 30, 2023 92 likes •268 views

CS-525H: Immersive HCI Symbolic Input Robert W. Lindeman Worcester Polytechnic Institute Department of Computer Science gogo@wpi.edu Motivation Several good approaches are available for Selection Ray casting, scaled hands, image

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CS-525H: Immersive HCI

Symbolic Input

Robert W. Lindeman

Worcester Polytechnic Institute Department of Computer Science

gogo@wpi.edu

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 2

Motivation

Several good approaches are available for

 Selection

 Ray casting, scaled hands, image plane

 Manipulation

 WIM, direct manipulation, tool-based

 Locomotion

 Treadmills, fly where you point/look, walking in

place, game/VR controllers, Balance Board  System control (menuing)

 Tablets/Pads, pinch gloves, tabletop surfaces

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 3

Motivation (cont.)

Symbolic input remains difficult

 Text is tough to read in some environments

 Outdoors  HMDs

 Standard keyboard is not always available

 Can't see it (e.g., HMD)  Don't want to carry it (mobile)

 Multiple languages  Personal vs. Public (e.g., voice)  Hands-free vs. Hand-held

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 4

Types of Input

Text

 SMS  Comments for chatting/tweeting  Labels for objects  Entering names for things (e.g., restaurants)

Numbers

 Phone numbers  Coordinates (e.g., immersive modeling)

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 5

Text Input Classification

Amal Sirisena, Mobile Text Entry, 2002

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 6

Methods for Input

Chorded keyboards

 Twiddler2 (http://www.handykey.com/)

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Chorded Keyboards

FrogPad (http://www.frogpad.com/)

 Wired  Bluetooth

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 8

Alternate Keyboards

Belkin Nostromo SpeedPad

 Programmable

key bindings

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 9

Mobile Devices: Hard Keyboards

Most widely used mobile

text interface?

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 10

Mobile Devices: Hard Keyboards

BlackBerry Palm Centro Motorola Droid

http://vimeo.com/8869525

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 11

Mobile Devices: Soft Keyboards

iPhone 4 (show Web) iPad

BetterKeyboard for Android (show clip) (show Web) http://vimeo.com/8869525

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Stroke Alphabets

Used for stylus input (e.g., Palm)

Unistroke Graffiti

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Stroke Alphabets (cont.)

MDTIM Jot

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 14

Stroke Alphabets (cont.)

Stoke on top of keyboard

 Swype (show clip)  SlideIt (show clip)

Alternative strokes

Cirrin

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 15

Virtual Keyboards

My Work

 (show clip)

Jian Chen & Doug Bowman

 (show clip)

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R.W. Lindeman - WPI Dept. of Computer Science Interactive Media & Game Development 16

Other Methods

Voice

 Android voice control

Gestures

 ASL