Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
RubyとOpenCVで始める画像処理 / ruby-opencv-megurorb-23
Search
Tomoki Ishimaru
January 29, 2019
Programming
1
530
RubyとOpenCVで始める画像処理 / ruby-opencv-megurorb-23
Tomoki Ishimaru
January 29, 2019
Tweet
Share
More Decks by Tomoki Ishimaru
See All by Tomoki Ishimaru
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
thomi40
1
720
Netatmo API × Rubyで オフィスのCO2濃度をSlackに通知する / Netatmo API × Ruby × Slack
thomi40
0
290
WebVRをはじめよう
thomi40
0
78
Other Decks in Programming
See All in Programming
モビリティSaaSにおけるデータ利活用の発展
nealle
1
620
JEP 496 と JEP 497 から学ぶ耐量子計算機暗号入門 / Learning Post-Quantum Crypto Basics from JEP 496 & 497
mackey0225
2
490
「正規表現をつくる」をつくる / make "make regex"
makenowjust
1
790
Duke on CRaC with Jakarta EE
ivargrimstad
0
230
アーキテクチャと考える迷子にならない開発者テスト
irof
9
3.3k
高単価案件で働くための心構え
nullnull
0
160
スタートアップを支える技術戦略と組織づくり
pospome
8
11k
GeistFabrik and AI-augmented software development
adewale
PRO
0
180
Evolving NEWT’s TypeScript Backend for the AI-Driven Era
xpromx
0
190
OSS開発者の憂鬱
yusukebe
13
8.5k
Feature Flags Suck! - KubeCon Atlanta 2025
phodgson
0
160
生成AIを活用したリファクタリング実践 ~コードスメルをなくすためのアプローチ
raedion
0
120
Featured
See All Featured
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
52
5.7k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
21
1.3k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
659
61k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
4.1k
Writing Fast Ruby
sferik
630
62k
[RailsConf 2023] Rails as a piece of cake
palkan
57
6.1k
Optimising Largest Contentful Paint
csswizardry
37
3.5k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
The Invisible Side of Design
smashingmag
302
51k
Stop Working from a Prison Cell
hatefulcrawdad
273
21k
Into the Great Unknown - MozCon
thekraken
40
2.2k
Transcript
RubyͱOpenCVͰ࢝ΊΔը૾ॲཧ 2019/01/29 Meguro.rb#23 Tomoki Ishimaru / @thom_i40
ࣗݾհ • Tomoki Ishimaru • GMO AD Marketing Inc. •
ϑϩϯτΤϯυ / αʔόʔαΠυ • Իָͱࣸਅ͕͖ @thom_i40
ࠓ͢͜ͱ • OpenCVͷ֓ཁ • ruby-opencvͷ֓ཁ • ruby-opencvΛ׆༻ͨ͠Ռ
• Πϯςϧ͕։ൃ • Φʔϓϯιʔεͷը૾/ө૾ॲཧϥΠϒϥϦ • ΫϩεϓϥοτϑΥʔϜࢦͰઃܭ • C++, Java, Python,
MATLABΛαϙʔτ • ༷ʑͳόΠϯσΟϯά͕ଘࡏ OpenCV
ruby-opencv • Ruby༻ͷOpenCVϥούʔ • Ruby 2ܥ / OpenCV 2.4.13Λαϙʔτ •
RubyDoc.infoͰυΩϡϝϯτΛఏڙ https://www.rubydoc.info/gems/ruby-opencv/frames
άϨʔεέʔϧ/ೋԽॲཧ src = CvMat.load('Sailboat.bmp') gray = src.BGR2GRAY bin = gray.threshold(128,
255, :binary)
HaarྨثʹΑΔإೝࣝ
ࠓճ࡞ͬͨՌ
ָේը૾͔ΒϝϩσΟΛநग़
ָේը૾͔ΒϝϩσΟΛநग़
ָේը૾͔ΒϝϩσΟΛநग़
ͬͨػೳ
ೋԽॲཧ
ઢݕग़
ςϯϓϨʔτϚονϯά
ϝϩσΟΛநग़
·ͱΊ • OpenCVͱruby-opencvʹ͍ͭͯհͨ͠ • ruby-opencvͷ༷ʑͳػೳΛ༻͍ͯ ָේը૾͔ΒϝϩσΟΛநग़͢ΔγεςϜΛ࡞ͬͨ • RubyͰجຊతͳը૾ೝ͕ࣝͰ͖Δ͜ͱ͕Θ͔ͬͨ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ @thom_i40