Image processing tips using ruby-vips

鹿児島Ruby会議で発表した資料です。
https://k-ruby.github.io/kagoshima-rubykaigi01/

ruby-vipsの使い方などについてお話しました。
https://github.com/libvips/ruby-vips

メドピア
https://medpeer.co.jp/

kakari
https://kakari.medpeer.jp/

Transcript

1. Image processing tips using ruby-vips 30/11/19 @kagoshima-rubykaigi01 Takashi Miyahara, MedPeer,Inc,ɹɹɹɹɹɹɹɹɹɹɹ
2. Self-Introduction » Name: Takashi Miyahara / @TakashiMiyahara » Work: Community site for doctors » hobby: Camera ! , Self-made keyboard Work history » Sony Global Manufacturing & Operations Corp.(2017-04 ~ 2019-09) » MedPeer,Inc.(2019-10 ~)
3. Have you ever image processing?
4. What is libvips? » Open source image processing software package » Written in C, GTK+ » Works with multi-core processors » Low RAM consumption » multiple language wrappers (Python, Ruby, PHP, Lua, JavaScript) libvips link
7. Get Started for macOS
8. Get Started for ubuntu/debian
9. How to use libvips in Ruby
10. Everyone uses Rails, right?
11. How to use libvips in Rails image_processing can be used from Rails 6.0.0 (#32471)
13. Convert color image to grayscale image
14. Convert color image to grayscale image
15. Convert color image to grayscale image
16. Convert color image to black and white image
17. Convert color image to black and white image
18. Image resizing :size down
19. Image resizing :size up
21. Our products kakari link
22. Our products
23. Output fax (Before)
24. Vips started to work with our products
25. Output fax (After)
26. Thank you