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個性豊かな手書きメッセージ
生成手法の提案
佐藤 剣太
(明治大学 総合数理学部 B3/JST CREST)
中村 聡史(明治大学 総合数理学部/JST CREST)
鈴木 正明(明治大学 総合数理学部)
背景
広告やDTP業界では、文字のフォントを変えることで
印象を表現するということが行われている
ポップ体 行書体
背景
手書き文字は字の大きさ、筆圧などで印象が変化
手書き文字に対して動きを与えると
より多彩な表現が可能?
• 大きい文字ほど圧迫感がある
筆圧• の濃い文字は力強さが感じられる
背景
手書き文字は字の大きさ、筆圧などで印象が変化
手書き文字に対して動きを与えると
より多彩な表現が可能?
• 大きい文字ほど圧迫感がある
筆圧• の濃い文字は力強さが感じられる
関連研究
Kinetic Typography[上田11][加藤14]
文字• にアニメーションを付与し印象を変化させる技法
• 元の文字はフォントのみ変更可能
https://www.youtube.com/watch?v=y4sOfO8Ei1g
関連研究
オノマトペン[神原10]
オノマトペ• に対応した質感を手書き文字に与える
表現可能• な質感は一定
https://www.youtube.com/watch?v=sV75QjBrso0
目的
コンピュータ上に書かれた手書き文字に対して
手軽にアニメーションを付与する手法を実現
GUI• の操作や音声入力によって手軽に生成
評価実験• により提案手法の有用性を検証
提案手法
入力データ 波形 文字アニメーション
➡
あらかじめ用意された数式
アナログ入力に基づく数式
プロトタイプシステム
GUIによるパラメータ調整
マイク入力により録音したデータ
に基づいて波形を付与
音声入力
画面内で振幅・移動速度・
波長を調整
評価実験
感情を持つ文字の表現に関して
GUI操作と音声入力のどちらが文字の感情をより
的確に伝えられるか
意図を伝えられるか
文字の親しみやすさと読みやすさに関する
書き手とそれ以外の人の受け取りかたの違い
以下の2つの仮説を検証する
評価実験
喜怒
哀楽
5(人)2(手法)4(感情)4(文字)
=160(文字)
データセット構築
協力者:• 20 21歳の学生 5名
評価実験
評価者:• データセット構築者5名 + それ以外の5名
アンケート• 項目
喜・怒・哀・楽- それぞれの度合い
文字- への親しみやすさ・読みやすさ
• 7段階のリッカート尺度(-3 +3)
Web• 上のシステムにて評価
実験内容
実験結果
• 怒りと悲しみはある程度意思が伝わった
• 怒りは音声入力、悲しみはGUI操作で作成すると正
しく受け取られやすい
考察
• 喜びと楽しみは似た印象のため似た結果
GUI• 操作では幅広い種類の波形を、音声入力
ではギザギザとした波形を容易に表現可能
文字• アニメーションは自分で作成すると 親
しみやすさ・読みやすさについて高い評価
数式化• した手書き文字に別の数式を付与し
、文字アニメーションを手軽に実現する手
法を提案
今後• の課題
GUI- 操作において付与可能な感情の種類の増加
気象- データやセンサデータを利用したアニメー
ション表現の検討
実験結果:親しみやすさ、読みやすさ
双方の評価について、構築者の方が平均的に
高い評価を出している
実験結果:自分と他者の文字
自分の文字に対する評価
他者の文字に対する評価
対象:データセット構築の協力者5名
実験結果:有意差
喜び
P(T <= t) = 0.910455
有意差なし
怒り
P(T <= t) = 0.001382
有意差あり
悲しみ
P(T <= t) = 0.000211
有意差あり
楽しみ
P(T <= t) = 0.032431
有意差あり
GUI操作と音声入力のどちらがアニメーション
生成に適しているか?
プルチックの感情の輪

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個性豊かな手書きメッセージ生成手法の提案