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
potatotips 27
Search
Takeru Chuganji
September 28, 2016
Technology
0
54
potatotips 27
Takeru Chuganji
September 28, 2016
Tweet
Share
More Decks by Takeru Chuganji
See All by Takeru Chuganji
React Native Matsuri 2021
chuganzy
7
11k
iOSDC 2017
chuganzy
5
3.9k
Other Decks in Technology
See All in Technology
エンジニアリングマネージャーの成長の道筋とキャリア / Developers Summit 2025 KANSAI
daiksy
2
490
CDK CLIで使ってたあの機能、CDK Toolkit Libraryではどうやるの?
smt7174
4
190
slog.Handlerのよくある実装ミス
sakiengineer
4
420
2つのフロントエンドと状態管理
mixi_engineers
PRO
3
110
Aurora DSQLはサーバーレスアーキテクチャの常識を変えるのか
iwatatomoya
1
1.1k
データ分析エージェント Socrates の育て方
na0
5
770
Android Audio: Beyond Winning On It
atsushieno
0
2.4k
いま注目のAIエージェントを作ってみよう
supermarimobros
0
340
Snowflake Intelligenceにはこうやって立ち向かう!クラシルが考えるAI Readyなデータ基盤と活用のためのDataOps
gappy50
0
270
Platform開発が先行する Platform Engineeringの違和感
kintotechdev
4
580
研究開発と製品開発、両利きのロボティクス
youtalk
1
530
Django's GeneratedField by example - DjangoCon US 2025
pauloxnet
0
150
Featured
See All Featured
Side Projects
sachag
455
43k
Navigating Team Friction
lara
189
15k
Become a Pro
speakerdeck
PRO
29
5.5k
Building Applications with DynamoDB
mza
96
6.6k
Building a Modern Day E-commerce SEO Strategy
aleyda
43
7.6k
Why You Should Never Use an ORM
jnunemaker
PRO
59
9.5k
Visualization
eitanlees
148
16k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
850
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Imperfection Machines: The Place of Print at Facebook
scottboms
268
13k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
127
53k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.7k
Transcript
WebP͏࣌Ε!?! ৽͍͠ը૾ܗࣜ”BPG”Λࢼͯ͠Έͨ
None
Better Portable Graphics • ༰ྔ͕খׂ͍͞ʹߴ࣭ • ՄٯѹॖϞʔυαϙʔτ • ϒϥβ൛ެ͕ࣜαϙʔτʢJSೖΕΔ͚ͩʣ •
ΞχϝʔγϣϯΛαϙʔτ
— Gigazine “JPEGը૾ͷͷϑΝΠϧαΠζͰ ಉ࣭ͷͷΛදࣔͰ͖Δը૾ܗࣜ”
BPG vs PNG / JPEG / WebP http://xooyoozoo.github.io/yolo-octo-bugfixes/
ҹ • ϒϩοΫϊΠζཱ͕ͨͳ͍ʢΒ͔ʹͳΔʣ • αΠζ͕খ͘͞ͳ࣭͕ͬͯམͪʹ͍͘ • …͍͢͝🎉
$ brew install libbpg Τϯίʔμ / σίʔμΛΠϯετʔϧ
$ bpgenc infile.[jpg|png] BPGͷม
$ bpgdec infile.bpg BPG͔Βͷม
iOSͰͷσίʔυ ϥΠϒϥϦ࡞Γ·ͨ͠🚀
https://github.com/chuganzy/HCImage-BPG
HCImage+BPG • macOS / iOSΛαϙʔτ • Carthage / CocoaPodsͰಋೖՄೳ •
Ξχϝʔγϣϯαϙʔτ
HCImage+BPG
WebPͱσίʔυ࣌ؒͷൺֱ💥
None
BPG 1136 × 818 | 13.6KB
WebP 1136 × 818 | 13.3KB
σίʔυ࣌ؒൺֱ • WebP: 0.7226 / BPG: 2.8070͋ • σίʔυ͍😂 •
നঢ়͢ΔͱΤϯίʔυ͍
͍͍ͯΔͱ͜Ζ • ճઢ͕ͱʹ͔͍͘ • ͖Ε͍ͳը૾Λද͍ࣔͨ͠ • σίʔυΛසൟʹ͠ͳͯ͘Α͍
࠾༻ࣄྫ
…ݟ͔ͭΒͳ͔ͬͨ😢 ͬͯΔΞϓϦ͋Δͷ͔ʁ
“Some of the HEVC algorithms may be protected by patents
in some countries.” BPG͕HEVCͷಛڐΛ༻͍ͯ͠ΔՄೳੑ͕͋Γ ར༻͢Δͱ͖৭ʑؾΛ͚ͭͳ͍ͱ͍͚ͳ͍
— LWN.net “ٕज़తʹJPEGΑΓ༏Ε͍ͯΔ͕ JPEGͷΘΓʹͳΔՄೳੑ͍ͩΖ͏”
😩
• BPGؒҧ͍ͳ͘ૉΒ͍͠ϑΥʔϚοτ🚀 • iOSͰ؆୯ʹ͑ΔΑ͏ʹͨ͠🙋 • ͬͯΈ͚ͨͲσίʔυ݁ߏ͍😂 • ಛڐؔʹؾΛ͚ͭΔඞཁ͕͋Δ🙄 • ࣮ઓೖʹ·ͩ৭ʑͱૣ͗͢Δ͔💧
·ͱΊ