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Hashigo: A Next-Generation Sketch Interactive System for Japanese Kanji. Innovative Applications of Artificial Intelligence 2009 – Pasadena, CA, USA. (40 years ago) In 1969…. [1963]. (20 years ago) In 1989…. (Present day) In 2009…. Our Solution – Computer aided language instruction using AI .

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hashigo a next generation sketch interactive system for japanese kanji

Hashigo: A Next-Generation Sketch Interactive System for Japanese Kanji

Innovative Applications of Artificial Intelligence 2009 – Pasadena, CA, USA

about japanese instruction
About Japanese Instruction

Reading

Writing

Culture

Speaking

Listening

difficulties of learning kanji
Difficulties of Learning Kanji

Many strokes

Many Symbols

Similarities in Kanji

Writing Variations

current ways of teaching kanji
Current Ways of Teaching Kanji

Home Repetition

Flashcard Memorization

Workbook Self-Quizzes

In-class

Learning

slide15

kanji assessment on paper
Kanji Assessment (on paper)

What was drawn

How it was drawn

labeling the stroke numbers
Labeling the stroke numbers
  • not natural
  • trying to teach natural writing

2

3

1

4

dynamic workbook features
“Dynamic” Workbook Features
  • pen input
  • no drawing location constraints
  • size independence
  • visual assessment (what it looks like)
  • writing assessment (how it was drawn)
our hashigo system
Our Hashigo System

digital

kanji

teacher

paper

background on system s name
Background on System’s Name

Hashigo

LAnguage for Describing

Drawing,

梯子

Display, and

Editing in

LADDER

Recognition

utilized resources
Utilized Resources

Sezgin primitive

shape recognizer

LADDER

sketching language

about ladder
About LADDER

components

constraints

aliases

about ladder1
About LADDER

components

constraints

aliases

about ladder2
About LADDER

components

constraints

aliases

kanji048

horzLine

line1

mouth

shape description convention
Shape Description Convention

line orientation

point orientation

shape interaction

shape description convention1
Shape Description Convention

line orientation

point orientation

shape interaction

center

p1

p1

center

p2

p2

shape description convention2
Shape Description Convention

line orientation

point orientation

shape interaction

visual recognition of kanji
Visual Recognition of Kanji

  • Line
    • horzLine
  • Line
    • vertLine

components

visual recognition of kanji1
Visual Recognition of Kanji
  • Horizontal
    • horzLine
  • Vertical
    • vertLine

line orientation

visual recognition of kanji2
Visual Recognition of Kanji
  • LeftOf
    • horzLine.p1
    • horzLine.p2
  • Above
    • vertLine.p1
    • vertLine.p2

point orientation

visual recognition of kanji3
Visual Recognition of Kanji
  • SameSize
    • vertLine
    • horzLine
  • SameX/Y
    • horzLine.center
    • vertLine.center

shape interaction

technique recognition of kanji
Technique Recognition of Kanji
  • Line line1
    • horzLine
  • Line line2
    • vertLine
  • Point start1
    • vertLine.p1
  • Point end1
    • vertLine.p2
  • Point start2
    • horzLine.p1
  • Point end2
    • vertLine.p2

start2

line1

end1

start1

line2

end2

aliases

technique recognition of kanji1
Technique Recognition of Kanji

start2

Stroke Order?

Stroke Direction?

line1

line2

start1

start2

line2

start1

end1

line1

end2

technique recognition of kanji2
Technique Recognition of Kanji

start2

Stroke Order?

Stroke Direction?

line2

line1

start2

start1

line2

start1

end1

line1

end2

technique recognition of kanji3
Technique Recognition of Kanji

start2

Stroke Order?

Stroke Direction?

line1

line2

end1

start2

line2

line1

start1

end1

end2

preliminary studies
Preliminary Studies
  • Sketch Recognition of Expert Writer’s Handwritten Kanji
  • Assessment Recognition of Novice Students’ Handwritten Kanji
  • Novice Students’ Kanji Learning Progress
preliminary study 1
Preliminary Study #1

古吾冒朋明

唱晶品呂昌

早旭世胃旦

胆亘凹凸

preliminary study 11
Preliminary Study #1

85%

93%

98%

* OCCR: Online Chinese Character Recognizer

preliminary study 2
Preliminary Study #2

古吾冒朋明

唱晶品呂昌

早旭世胃旦

胆亘凹凸

preliminary study 22
Preliminary Study #2

古吾冒朋明

唱晶品呂昌

早旭世胃旦

胆亘凹凸