䲚៤ᡔᴃ
ᑈ
䲒DŽᇐ㟈䖭ѯ⦄䈵ⱘЏ㽕᳝˖(1)⫼Ѡ㓈㤝
㸼䖒ϝ㓈ൟᯊˈ⬅Ѣ᭄㓈᭄ⱘޣᇥᖙ✊ᄬ
㊞ᗻ˗(2)⬅Ѣϡৠ⫼᠋㒬⬏ࡳᑩϪ⬠㾖
ⱘϡৠˈ䩜ᇍৠϾⳂ᠔㒬ࠊⱘ㤝ᄬᕜ
߿˗(3)ᕜᚙމϟ⫼᠋ᇍ㽕㒬ࠊⱘⳂⱘԩ
ᔶᓣᇮϡᯢ⹂ˈᇐ㟈᠔㒬ࠊⱘ㤝᳝䱣ᴎᗻDŽ
2 ሩ⼎ⱘᰃϔⲣৄ♃ൟⱘϝ㓈ᔶ⢊ǃϝ
㓈ᔶ⢊⡍ᅮ㾚㾦ϟⱘѠ㓈␆ᶧ䕂ᒧҹঞ⫼᠋
ⱘ㒬㤝DŽৃ㾕ˈϝ㗙ḋᓣП䯈ᄬᎼⱘᏂ
ᓖDŽᤶ㿔Пˈ㸼⦄Ҏ㉏ᛣ䆚ⱘ㒬㤝Ϣヺড়䅵
ㅫᴎ㾘㣗䇁㿔ⱘᔶ⢊㸼䖒П䯈ᄬᯢᰒⱘ䇁Н吓
≳DŽབԩ฿㸹䖭ϾҎᴎֵᙃ㸼䖒吓≳ᰃᅲ⦄Ѣ
㤝ⱘᔶ⢊Ẕ㋶㋏㒳ⱘ݇䬂DŽ
᳔䖥ᑈˈⷨおҎѢ㒬㤝ⱘᔶ⢊
Ẕ㋶ᮍ䴶䖯㸠њ䞣ⷨおDŽⳌ݇ⷨおЏ㽕䴶ϸ
ϾⳂ˖ϔᰃབԩ㊒ޚഄ⧚㾷㤝᠔㸼䖒ⱘֵᙃ
ᑊϢϝ㓈ᔶ⢊ᓎゟ᳝ᬜⱘ݇㘨˗Ѡᰃ⫼᠋ᛣ
㊞ⱘᚙމϟབԩ㒭ߎড়⧚ᓎ䆂Ң㗠থ⫼᠋DŽ
ᴀ᭛ᇍϞ䗄Ⳍ݇ᡔᴃ䖯ሩ䖯㸠ҟ㒡ˈ݊Ё䞡⚍
ҟ
㒡њ߽⫼Ϟϟ᭛ֵᙃ฿㸹䇁Н吓≳ⱘ᳔ᮄᮍ⊩DŽ
2
Ѣ㒬㤝ⱘϝ㓈ᔶ⢊Ẕ㋶Ḛᶊ
Ѡ㓈㒬㤝ϝ㓈ᔶ⢊ᄬ᭄㓈᭄Ϟⱘ
ϡϔ㟈ˈϸ㗙П䯈ᑊϡ㛑Ⳉ䖯㸠ⳌԐᑺ䅵ㅫDŽ
Ў㾷އ䖭Ͼ䯂乬ˈϔ㉏ᮍ⊩ᰃḍѠ㓈㤝⌟
ߎ݊᠔㸼䖒ⱘϝ㓈ᔶ⢊ˈ✊ৢϢ᭄ᑧЁⱘϝ㓈
ᔶ⢊䖯㸠䜡˗ϔ㉏ᮍ⊩ᰃᇚ᭄ᑧЁⱘϝ
㓈ᔶ⢊␆ᶧЎϾ㾚㾦ϟⱘѠ㓈ᔶ⢊ˈ✊ৢ⫼
Ѡ㓈ᔶ⢊Ϣ㤝䖯㸠䜡DŽҢৃ⫼ᗻϞ㗗㰥ˈ
ᴀ䛑䞛⫼Ѡ㉏ᮍ⊩ˈЎϔ㉏ᮍ⊩ЁⳈ
ҢѠ㓈㤝⌟ϝ㓈ᔶ⢊ᴀ䑿ህ᳝䴲ᐌⱘᣥ
ᗻDŽ
3 㒭ߎњѢ㤝ⱘϝ㓈ᔶ⢊Ẕ㋶ⱘϔ㠀
ḚᶊDŽᇍ᭄ᑧЁⱘϝ㓈ൟ䲚ˈ㽕џܜᇍᅗӀ
䖯㸠തᔦϔ࣪ㄝ乘໘⧚DŽᇍ↣Ͼൟˈ䅵ㅫᕫ
ࠄ㢹ᑆ䞛ḋ㾚㾦ϟⱘѠ㓈㸼䖒(г⿄Ѡ㓈ᔶ⢊
ڣ)ˈᇍ↣ᓴѠ㓈ᔶ⢊ڣ䖯㸠⡍ᕕᦤপˈ᳔㒜
ᓎゟ⡍ᕕϢྟϝ㓈ᔶ⢊П䯈ⱘ㋶ᓩDŽ
ᇍ⫼᠋䕧ܹⱘ㒬㤝ˈ㋏㒳ᇍ㤝䖯㸠Ⓒ
⊶ㄝ乘໘⧚ˈ✊ৢᦤপڣ⡍ᕕDŽ᳔ৢˈḍ
ϝ㓈ᔶ⢊
Ѡ㓈ᔶ⢊
㤝⡍ᕕ
㸼䖒
⫼᠋㒬
㤝
⡍ᕕ㸼䖒
Ϣ㋶ᓩ
Ẕ㋶
㒧ᵰ
ᔦϔ࣪ǃ
㾚㾦䞛ḋǃ
Ѡ㓈␆ᶧ
⡍ᕕ
ᦤপ
㾚㾦䗝ᢽ˄ৃ䗝˅ǃ
ⳌԐᑺ䜡
㤝乘໘⧚ǃ
䞣࣪˄ৃ䗝˅ǃ
⡍ᕕᦤপ
3 Ѣ㒬㤝ⱘϝ㓈ൟẔ㋶Ḛᶊ
Fig. 3 The Àow chart of retrieving 3D model based on 2D sketches
23DൟᎺǃ3D ൟ␆ᶧᕫࠄⱘ 2D 䕂ᒧ㒓Ёঞ
⫼᠋ⱘ㒬㤝ে
Fig. 2 A sample of 3D model left, the rendered 2D
contour middle, and the user sketches right