Designing a handwriting recognition based writing environment
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Designing a Handwriting Recognition Based Writing Environment J C Read, S J MacFarlane, C Casey Department of Computing, University of Central Lancashire, Preston, UK Introduction Background Information Description of the Observational Study Findings from the study General Findings

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Designing a handwriting recognition based writing environment l.jpg

Designing a Handwriting Recognition Based Writing Environment

J C Read, S J MacFarlane, C Casey

Department of Computing, University of Central Lancashire, Preston, UK


Introduction l.jpg
Introduction Environment

  • Background Information

  • Description of the Observational Study

  • Findings from the study

    • General Findings

    • Findings relating to the Handwriting Recognition

    • Satisfaction measuring

  • Informing the design

  • Description of the Prototype

  • Conclusions

[email protected]


Who why what where how l.jpg
Who? Why? What? Where? How? Environment

  • Janet C Read, lecturer and mother!

  • Elodie, PhD study

  • Speech, handwriting: - Human Language Technology, Free text not command.

  • Lancs..UK; white rural primary – age 7 – 9

  • Research, Observations, Usability studies

[email protected]


Previous work l.jpg
Previous Work Environment

  • QWERTY keyboard difficult (WES2000)

  • HLT attractive to children, HR feasible (HCI2000, HCI2001)

  • Measuring Fun (CandF2000, CandF2001)

  • Participatory design (IDC2002)

  • Errors in HR interfaces (NordiCHI2002)

[email protected]


The observational study l.jpg
The Observational Study Environment

  • Children aged 7 and 8

  • Normal classroom activities

  • In twos

  • Laptop (HR), Desktop (QWERTY), Desk (Pencil)

  • Different writing tasks

  • Difficulties, Errors, Corrections

[email protected]


Pen and paper errors l.jpg
Pen and Paper Errors Environment

  • Errors made – missing words, spelling, letters written backwards

  • Error prevention – asked, avoided, looked

  • Error discovery – reading back, self, teacher or another child

  • Error repair – rub out, scribble out, cross out, overwrite, re-write, squeeze in , change

[email protected]


Qwerty errors l.jpg
QWERTY - Errors Environment

  • Errors made – missing words, spelling, hit wrong key

  • Error prevention – asked, avoided, looked

  • Error discovery – reading back, self, teacher or another child, wiggly lines!

  • Error repair – position and rub out, rub back to, rub all, retype, change

[email protected]


Handwriting recognition overview l.jpg
Handwriting Recognition - Overview Environment

  • Hardware – Graphics tablet and pen

  • Software – Recognition software

    • Fuzzy computing

    • Disobedient – ambiguous

    • Character or word based

    • On line – ‘t’ stroke problems

  • Demonstration

[email protected]


Demonstration of handwriting l.jpg
Demonstration of handwriting Environment

[email protected]


Handwriting recognition errors 1 l.jpg
Handwriting Recognition – Errors (1) Environment

  • Child

    • Errors made – miss words, spellings, letters backwards, pen up

  • Computer

    • Errors made – Bad recognition, hardware

  • Child

    • Error prevention – ask, avoid, look

  • Computer

    • Error prevention – spell checker (not used)

[email protected]


Handwriting recognition errors 2 l.jpg
Handwriting Recognition – Errors (2) Environment

  • Child

    • Error discovery

      • Before Recognition – reading back, teacher, other child

      • After Recognition – as above + wiggly lines!

    • Error repair

      • Before recognition – scribble out, overwrite, insert letter

      • After Recognition – rub back to, rub all, rewrite all or some, use QWERTY

[email protected]


Satisfaction measuring l.jpg
Satisfaction Measuring Environment

  • Errors do not imply dissatisfaction

  • WHY?

    • Sticky – addictive vs. nothing better

    • Funny – humour with recognition – easy to use

[email protected]


Designing a prototype method l.jpg
Designing a Prototype - method Environment

  • Users

    • Children, environment, characteristics, mental models

  • Tasks

    • Goal oriented – hierarchy

  • System

    • States – dangerous states

  • Interface

    • UI design guidelines

[email protected]


Child l.jpg
Child Environment

  • Classroom based – standard equipment, needs to be easy to use, robust, minimal help needed

  • Children – varied pen control, different levels of expertise with technology, different reading skills, poor or very good letter formation

  • Mental model – see tablet as paper – want to scribble out and insert missed words

[email protected]


Child writing l.jpg
Child writing Environment

[email protected]


User goal l.jpg
User Goal Environment

  • To produce good written work

    • Planning

    • Translation

    • Reviewing and Editing

      (Hayes and Flower)

[email protected]


Supporting the writer 1 l.jpg
Supporting the writer (1) Environment

  • Ideas – pop up in clouds, can have many, child can re-order them and can put them away, use handwriting that is not recognised

  • Translation – training supported, lines can be drawn on screen or on the tablet (or both!); recognition can be immediate or delayed;

[email protected]


Supporting the writer 2 l.jpg
Supporting the writer (2) Environment

  • Reviewing – computer can read back recognised text, child can read recognised or script text; spellings may be highlighted in recognised text – teacher controls

  • Editing – child can edit with rubber and pen on script, or with keyboard on recognised text

[email protected]


System states l.jpg
System States Environment

  • Entry state

  • Recognition state

  • Edit state

    • DANGEROUS STATES

      • Pens that point

      • Cursors that confound

      • Spaces that stop

[email protected]


Interface design 1 l.jpg
Interface Design (1) Environment

  • Full writing screen

  • Ability to place new pages

  • Menus at the bottom

  • Haptic boundary preferred

  • Tablet matched to screen

  • Pen can be turned on and off

[email protected]


Interface design 2 l.jpg
Interface design (2) Environment

  • Video clip facility

  • Teachers screen

  • Assistant

  • Customisable

  • Training activities

[email protected]


And so l.jpg
And so…………… Environment

  • The designs for a product for a small group of users, for a narrow application

  • Keyboard interface

  • Error repair

  • Speech recognition

[email protected]


Thank you l.jpg
Thank you Environment

Janet C Read

University of Central Lancashire

Preston

Up North!

England

[email protected]

[email protected]


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