LINE Creators Studioで写真を簡単 & きれいに切り抜いてもらいたい話 / Grabcut in LINE Creators Studio

2019/2/13に開催されたLINE Developer Meetup #50 in Fukuokaでの登壇資料です

1. -*/&
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   4UVEJPͰ
   ࣸਅΛ؆୯ˍ͖Ε͍ʹ
   ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ LINE Developer meetup #50 in Fukuoka -*/&
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   ੣ Feb 13, 2019
2. അݟ
   ੣ -*/&
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   ։ൃ̏ࣨॴଐ UMAMI MAKOTO @umakoz -*/&
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3. -*/&
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   4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ LINE Creators Studio? ɾεϚʔτϑΥϯ͔Β-*/&ελϯϓ͕؆୯ʹ࡞ΕΔ
   ɾࡱͬͨࣸਅΛՃ޻ͯ͠ελϯϓʹͰ͖Δ
   ɾελϯϓͷ৹ࠪਃ੥΍ൢച͕Ͱ͖Δ
   ɹIUUQTDSFBUPSMJOFNFKBTUVEJP ಛ௃
4. LINE Creators StudioͰͷSticker࡞ྫ -*/&
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5. LINE Creators Studio Android ɾPure Kotlinʢwithout Libraryʣ ɾMVVM ɾDagger2, RxJava2, RxKotlin, RxLifecycle, 
 Retrofit2, OkHttp3, Glide, Realm, Anko, 
 Espresso, Mockito-Kotlin ߏ੒ -*/&
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   4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩
6. History 7FS
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7. History -*/&
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   4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ 7FS
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8. ੾Γൈ͖ؔ࿈ଟ͗͢ʜ ɾͳͧͬͯ੾Γൈ͖
   ɾܗͰ੾Γൈ͖
   ɾফ͠ΰϜ
   ɾσίϑϨʔϜ
   ɾࣗಈ੾Γൈ͖ ؆୯ͳૢ࡞Ͱ͖Ε͍ʹ੾Γൈ͖͍ͨʂ -*/&
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9. ͳͧͬͯ੾Γൈ͖ ɾΠϝʔδͷԑΛͳͧͬͯ੾Γൈ͘
   ɾύε্ͷ྘ͷ఺ΛҠಈͤ͞Δ͜ͱͰඍௐ੔͢Δ 7FSʙ ɾ௚ײత ௕ॴ ɾࡉ͔͍मਖ਼͕͠ʹ͍͘
   ɾҰຊͷύεͰ͔͠੾Γൈ͚ͳ͍ ୹ॴ -*/&
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10. ܗͰ੾Γൈ͖ ɾԁ΍࢛֯ɺϋʔτɺ੕ͷܗΛબͿ
    ɾΠϝʔδΛҠಈ΍֦େॖখɺճసͤ͞Δ͜ͱͰඍௐ੔͢Δ 7FSʙ ɾ؆୯ ௕ॴ ɾ༻ҙ͞ΕͨܗͰ͔͠੾Γൈ͚ͳ͍ ୹ॴ -*/&
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11. ফ͠ΰϜ ɾফ͠ΰϜΛ͔͚ͨ෦෼͕ফ͑Δ
    ɾम෮ফ͠ΰϜΛ͔͚ͯ෦෼తʹΠϝʔδΛ໭͠ɺඍௐ੔͢Δ 7FSʙ ɾΤοδͷࡉ͔ͳௐ੔͕Ͱ͖Δ
    ɾෳ਺ͷύεͰ੾Γൈ͖Ͱ͖Δ ௕ॴ ɾ͖Ε͍ʹ੾Γൈ͘ʹ͸ख़࿅ͷٕͱ͕࣌ؒඞཁ ୹ॴ -*/&
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12. σίϑϨʔϜ ɾΠϝʔδΛσίϨʔγϣϯ͢ΔϑϨʔϜΛબͿ
    ɾΠϝʔδΛҠಈ΍֦େॖখɺճసͤ͞Δ͜ͱͰඍௐ੔͢Δ 7FSʙ ɾ௒؆୯ʹݟӫ͑ͷ͢Δελϯϓ͕࡞ΕΔ ௕ॴ ɾಉ͡Α͏ͳελϯϓ͕ྔ࢈͞ΕΔ ୹ॴ -*/&
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13. ࣗಈ੾Γൈ͖ ࠓɺྲྀߦΓͷػցֶशͱ͔࢖ͬͯ
    ελϯϓʹඞཁͳ෦෼Λ੾Γൈ͚ͳ͍ʁ -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ SFNPWFCH
    
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    ػցֶश
14. ࣗಈ੾Γൈ͖ ɾ'BDF%FUFDUPS
    ɾ.-
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    ɾ:0-0 0CKFDU
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15. ࣗಈ੾Γൈ͖ ɾ.BTL
    3$//
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16. ࣗಈ੾Γൈ͖ 5FOTPS'MPX`T
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    -JUF
17. ࣗಈ੾Γൈ͖ ɾࣸਅͷҰ෦͚ͩΛ࢖͏
    ɾਓ΍෺ͷશମͰ͸ͳ͘ɺҰ෦͚ͩʢإͱ͔ʣΛ࢖͏
    ɹˠྖҬΛݕग़͢Δ͚ͩͰ͸ෆे෼
    Ͳ͕͜ελϯϓʹద͍ͯ͠Δ͔Λݕग़Ͱ͖Δ͔ʁ -*/&
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18. ࣗಈ੾Γൈ͖ ΠϝʔδͷपғΛͬ͘͟ΓͳͧΔ
    ࣗಈͰ੾Γൈ͍ͯ΋Β͏
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    ࣗಈͰ੾Γൈ͍ͯཉ͘͠ͳ͍෦෼ʹम෮ফ͠ΰϜΛ͔͚Δ
    ʙͷૢ࡞Λ܁Γฦͯ͠ඍௐ੔͢Δ 7FSʙ -*/&
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19. ࣗಈ੾Γൈ͖ ɾ؆୯Ͱ͖Ε͍ʹ੾Γൈ͚Δ ௕ॴ ɾૢ࡞͕ෳࡶͰ׳Ε͕ඞཁ ୹ॴ -*/&
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20. ࣗಈ੾Γൈ͖ ɾΠϝʔδͷલܠྖҬΛநग़͢Δ
    ɾ0QFO$7
 IUUQTPQFODWPSH (SBC$VU
    "MHPSJUIN -*/&
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21. -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ GrabCut Algorithm Ϣʔβʔ͕બ୒ͨ͠ൣғ͔ΒۣܗΛੜ੒ͯ͠ೖྗ͠ɺ
 ֎ଆ͸എܠʹ಺ଆ͸લܠʹͳΔɻ
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    ϐΫηϧͷ৭৘ใΑΓલܠʗഎܠͰ͋Δ֬཰Λ༧ଌ͢ΔϞσϧΛ࡞Δɻ
22. -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ GrabCut Algorithm http://www.cs.ru.ac.za/research/g02m1682/ Ϣʔβʔ͕બ୒ͨ͠ൣғ͔ΒۣܗΛੜ੒ͯ͠ೖྗ͠ɺ
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23. -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ GrabCut Algorithm http://www.cs.ru.ac.za/research/g02m1682/ Ϣʔβʔ͕બ୒ͨ͠ൣғ͔ΒۣܗΛੜ੒ͯ͠ೖྗ͠ɺ
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    ΤοδͷॏΈͷ૯࿨͕࠷খʹͳΔΑ͏ʹ੾அ͢Δɻ
24. GrabCut Algorithm -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ http://www.cs.ru.ac.za/research/g02m1682/ Ϣʔβʔ͕બ୒ͨ͠ൣғ͔ΒۣܗΛੜ੒ͯ͠ೖྗ͠ɺ
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    ΤοδͷॏΈͷ૯࿨͕࠷খʹͳΔΑ͏ʹ੾அ͢Δɻ
    Ϣʔβʔʹิਖ਼ͷͨΊͷઢΛೖྗͯ͠΋Β͍ɺ࠶ͼܭࢉ͢Δɻ
25. ࣗಈ੾Γൈ͖ͷ޻෉ (SBC$VUલʹબ୒ྖҬΛج४ͱ͠
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26. ࣗಈ੾Γൈ͖ͷ޻෉ ϚʔΧʔͷαΠζΛ൒෼ʹͯ͠(SBC$VUΛ ࣮ߦ͢Δɻ ॲཧ଎౓ͷ޲্ -*/&
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27. ࣗಈ੾Γൈ͖ͷ޻෉ 3FOEFS4DSJQUΛ࢖͏
 "OESPJEͰ࠾༻͞Ε͍ͯΔ
 ϐΫηϧ୯ҐͷॲཧΛ
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ QSBHNB
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    ST
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28. ࣗಈ੾Γൈ͖ͷ޻෉ ݩը૾ͷେ͖͞Λҡ࣋ͨ͠··੾Γൈ͘
 ˞
    ࠷ऴతʹ࡞Δͷ͸
 ɹ
    ελϯϓ º ͳͷͰɺ
 ɹେ͖͗͢Δ࣌͸ϦαΠζ ը࣭ͷ޲্ ݩը૾ σΟεϓϨΠ Ҡಈɺ֦େॖখɺճస Matrix Matrix -*/&
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29. ࣗಈ੾Γൈ͖ͷ޻෉ Τοδʹ΅͔͠Λ͔͚Δɻ
 ͨͩ͠ɺ΅͔ͨ͠ϚʔΧʔΛ(SBC$VUʹ࢖͏ͱ
 ਫ਼౓͕མͪΔͷͰɺσΟεϓϨΠ্͚ͩ΅͔͢ɻ ඒ͠͞ͷ޲্ -*/&
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30. ࣗಈ੾Γൈ͖ͷ޻෉ ϦΞϧλΠϜʹ΅͔͢ͱॲཧ͕஗͘ͳΔͷͰɺ
 ϚʔΧʔͷ֬ఆ࣌ʹ΅͔͢ɻ ඒ͠͞ͷ޲্ -*/&
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31. ࣗಈ੾Γൈ͖ ࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨʂ -*/&
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32. -*/&
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    4UVEJPͰࣸਅΛ؆୯ˍ͖Ε͍ʹ੾Γൈ͍ͯ΋Β͍͍ͨ࿩ IUUQTMJOFGVLVPLBDPKQKBDBSFFSFOHJOFFS
33. 5IBOL
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