Rubyで画像ファイルから様々なオブジェクトを検出する / ruby-opencv-heiseirb-2

Transcript

1. RubyͰը૾ϑΝΠϧ͔Β
   ༷ʑͳΦϒδΣΫτΛݕग़͢Δ
   2019/03/14 ฏ੒.rb #2 @MedPeer, Inc.
   Tomoki Ishimaru / @thom_i40
   

   View Slide

2. ࣗݾ঺հ
   • Tomoki Ishimaru
   • GMO AD Marketing Inc.
   • ϑϩϯτΤϯυ / αʔόʔαΠυ
   • झຯ͸Իָͱࣸਅͱ૸Δ͜ͱ
   @thom_i40
   

   View Slide

3. ࠓ೔࿩͢͜ͱ
   • ը૾ॲཧϥΠϒϥϦʮOpenCVʯͷ֓ཁ
   • ruby-opencvͷ֓ཁ
   • ruby-opencvΛ༻͍ͨ෺ମೝࣝ
   • ruby-opencvΛ׆༻ͨ͠੒Ռ෺
   

   View Slide

4. ࠓ೔࿩͞ͳ͍͜ͱ
   • ಈըͷೖग़ྗ΍੍ޚ
   • ػցֶशͱOpenCV
   • ruby-opencvͷ࢓૊Έ
   • ίϯϐϡʔλϏδϣϯͷ࢓૊Έ
   

   View Slide

5. View Slide

6. • Πϯςϧ͕։ൃ
   • Φʔϓϯιʔεͷը૾/ө૾ॲཧϥΠϒϥϦ
   • ΫϩεϓϥοτϑΥʔϜࢦ޲Ͱઃܭ
   • C++, Java, Python, MATLABΛαϙʔτ
   • ༷ʑͳόΠϯσΟϯά͕ଘࡏ
   OpenCV
   

   View Slide

7. ruby-opencv
   • Ruby༻ͷOpenCVϥούʔ
   • Ruby 2ܥ / OpenCV 2.4.13Λαϙʔτ
   • RubyDoc.infoͰυΩϡϝϯτΛఏڙ

   https://www.rubydoc.info/gems/ruby-opencv/frames
   

   View Slide

8. ؀ڥߏங(OS X)
   • HomebrewͰOpenCVΛΠϯετʔϧ
   • gem install Ͱ ruby-opencv Λಋೖ
   https://github.com/ruby-opencv/ruby-opencv
   

   View Slide

9. ࠓճ঺հ͢Δػೳ
   • إݕग़
   • ԁݕग़
   • ௚ઢݕग़
   • ୅දతͳը૾ॲཧػೳ
   • ςϯϓϨʔτϚονϯά
   

   View Slide

10. άϨʔεέʔϧ / ೋ஋Խॲཧ
    src = CvMat.load('Sailboat.bmp')
    gray = src.BGR2GRAY
    bin = gray.threshold(128, 255, :binary)
    

    View Slide

11. ԁݕग़
    

    View Slide

12. ԁݕग़
    

    View Slide

13. Haar෼ྨثʹΑΔإݕग़
    

    View Slide

14. Haar෼ྨثʹΑΔإݕग़
    

    View Slide

15. Haar෼ྨثʹΑΔإݕग़
    ͨͬͨ਺ߦͰ࣮૷Մೳ
    

    View Slide

16. ௚ઢݕग़
    

    View Slide

17. ௚ઢݕग़
    

    View Slide

18. ςϯϓϨʔτϚονϯά
    

    View Slide

19. ςϯϓϨʔτϚονϯά
    

    View Slide

20. ࠓճ࡞ͬͨ੒Ռ෺
    

    View Slide

21. ָේը૾͔ΒϝϩσΟΛநग़
    

    View Slide

22. ָේը૾͔ΒϝϩσΟΛநग़
    

    View Slide

23. ָේը૾͔ΒϝϩσΟΛநग़
    

    View Slide

24. ࢖ͬͨػೳ
    

    View Slide

25. ೋ஋Խॲཧ
    

    View Slide

26. ௚ઢݕग़
    

    View Slide

27. ςϯϓϨʔτϚονϯά
    

    View Slide

28. ϝϩσΟΛநग़
    

    View Slide

29. ·ͱΊ
    • OpenCVʹ͍ͭͯ঺հͨ͠
    • ruby-opencvΛ༻͍ͨ෺ମݕग़ʹ͍ͭͯ঺հͨ͠
    • ָේը૾͔ΒϝϩσΟΛநग़͢ΔγεςϜΛ࡞ͬͨ
    • RubyͰ΋جຊతͳը૾ೝ͕ࣝͰ͖Δ͜ͱ͕Θ͔ͬͨ
    

    View Slide

30. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    @thom_i40
    

    View Slide