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
写真はもう信用できない?フェイク検出から来歴証明へ
Search
Sponsored
·
Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
→
Shuhei Shitamori
October 25, 2025
Technology
80
1
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
写真はもう信用できない?フェイク検出から来歴証明へ
Shuhei Shitamori
October 25, 2025
More Decks by Shuhei Shitamori
See All by Shuhei Shitamori
Photography is Dead?
shitamori1272
1
75
Vision Proで実現する 『ながら運動』健康促進術
shitamori1272
0
140
時差×英語×リモートでの コミュニケーション術
shitamori1272
0
72
Apple SharePlayで 非対称クロスプレイ チャレンジ (SharePlay使ってみた編)
shitamori1272
0
180
Foundation Models触ってみた - iPhone Dev Sapporo — WWDC25 Recap
shitamori1272
0
120
Vision Proで広告フリーな世界を実現したい
shitamori1272
0
240
Wallet API, Verifier APIで実現するIDカード on iPhoneの世界
shitamori1272
1
3.5k
Other Decks in Technology
See All in Technology
2026TECHFRESH畢業分享會 - Lightning Talk - 打造精準高效的 MCP 設計模式與測試實務
line_developers_tw
PRO
0
780
非定型業務をAI slackbotで自動化する ~ 社内要望を自動壁打ちするbotを作った ~/automating-ad-hoc-work-with-ai-slackbot
shibayu36
0
600
エラーバジェットのアラートのタイミングを考える.pdf
kairim0
0
110
AWSシリコン最前線 〜AI時代のチップ選択を読み解く〜
htokoyo
2
440
Oracle AI Database@Google Cloud:サービス概要のご紹介
oracle4engineer
PRO
6
1.5k
Chainlitで作るお手軽チャットUI
ynt0485
0
200
Agent Skills設計で柔軟性と硬さのバランスが難しい話
nassy20
0
120
On-behalf-of Token exchange with AgentCore Identity
hironobuiga
2
150
MIERUNE JCT 発表資料「宇宙から伊能忠敬ごっこ」
syuchimu
0
210
2026TECHFRESH畢業分享會 - 葬送的通靈師:化系統與用戶雜訊成行動訊號
line_developers_tw
PRO
0
780
Building applications in the Gemini API family.
line_developers_tw
PRO
0
2.9k
AIの性能が向上しても未解決な組織の重大問題は何か?/An Unsolved Organizational Problem in the Age of AI
moriyuya
3
610
Featured
See All Featured
Art, The Web, and Tiny UX
lynnandtonic
304
22k
Ten Tips & Tricks for a 🌱 transition
stuffmc
0
130
Fireside Chat
paigeccino
42
3.9k
Color Theory Basics | Prateek | Gurzu
gurzu
0
360
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
techseoconnect
PRO
0
180
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
The Cost Of JavaScript in 2023
addyosmani
55
10k
How To Speak Unicorn (iThemes Webinar)
marktimemedia
1
480
Crafting Experiences
bethany
1
180
Breaking role norms: Why Content Design is so much more than writing copy - Taylor Woolridge
uxyall
0
320
ラッコキーワード サービス紹介資料
rakko
1
3.6M
Making Projects Easy
brettharned
120
6.7k
Transcript
Լ पฏ 2025/10/24 iPhone Dev Sapporo ࣸਅ͏৴༻Ͱ͖ͳ͍ʁ ϑΣΠΫݕग़͔Βདྷྺূ໌
ࣗݾհ Լɹपฏ • ΧφμͷσδλϧID ελʔτΞοϓ Ͱ ಇ͘iOS ΤϯδχΞ • Swift
PackageXCFramework͔ͬΓ৮ͬͯΔ • ॳΊͯࡳຈϚϥιϯʹࢀՃ 10km • ࠷ۙɺձࣾΛ࡞Γ·ͨ͠ • ࠓͷൃද΄΅iOSʹؔͳ͍Ͱ͢ ࿈བྷઌɾSNS
ͲͪΒ͕ΧϝϥͰࡱӨ͞Εͨࣸਅʁ
ͲͪΒ͕ΧϝϥͰࡱӨ͞Εͨࣸਅʁ ࠷ۙͷϑΣΠΫࣸਅύοͱݟͰஅ͢Δͷ͕͍͠ LEICA M11-PͰࡱӨͨࣸ͠ਅ https://www.tbray.org/ongoing/When/202x/2023/10/28/C2PA- Work fl ows SoraੜಈըͷεΫγϣ
ࠓ͍ͨ͜͠ͱ • ϑΣΠΫࣸਅͷྺ࢙ • ओͳϑΣΠΫࣸਅݕग़ٕज़ͷհ • ݱࣾձͰͷ՝ • ͜Ε͔Βͷղܾࡦ ʮࣸਅ͏৴༻Ͱ͖ͳ͍ʁʯ
ʹର͢Δճͷख͕͔ΓͱͳΕخ͍͠ ιʔείʔυ Ұग़·ͤΜ iOS΄ͱΜͲ ؔ͋Γ·ͤΜ
͜ͷൃදͷ͓͚Δ ”ϑΣΠΫࣸਅ” • ΧϝϥͰࡱΒΕͨͱ”ࢥΘͤΔ”Α͏ʹ࡞ΒΕ ਅ࣮ͱҟͳΔҹΛ༩͑Δը૾ • ग़ॴɺ߹ɾՃɾੜAIͳͲଟ༷ https://www.bbc.com/japanese/articles/ckrxv91x0ego
ϑΣΠΫࣸਅͷྺ࢙ (1) ҉ࣨɾϑΟϧϜͷ࣌ • ཧతͳՃʹΑΔվ͟Μ • ଟॏ࿐ग़ͰͷࡱӨ • ҉ࣨ߹ •
ߴίετͰઐՈ͚͕ͩ࡞Εͨ ϑΣΠΫͷଘࡏೝ͞Ε͍͕ͯͨ ࣸਅࣗମ৴༻͞Ε͍ͯͨ https://en.wikipedia.org/wiki/ Brown_Lady_of_Raynham_Hall ৺ྶࣸਅ(Brown Lady) https://natgeo.nikkeibp.co.jp/atcl/ gallery/052101927/index.html?P=3 ผਓͷ૾͔Β߹ͨ͠ ϦϯΧʔϯͷ૾
ϑΣΠΫࣸਅͷྺ࢙ʢ2ʣ σδλϧϑΥτ࣌ • σδλϧฤूπʔϧͷҰൠԽ • ઐՈͰͳͯ͘࡞Մೳʹ • Photoshopͷొ͕λʔχϯάϙΠϯτ →୭ͰϑΣΠΫࣸਅΛ࡞Ͱ͖Δ࣌ͷ౸དྷ https://en.wikipedia.org/wiki/Tourist_guy
911ςϩޙʹ֦ࢄ͞ΕͨϑΣΠΫࣸਅ
ϑΣΠΫࣸਅͷྺ࢙ʢ3ʣ SNS࣌ • ैདྷϝσΟΞʹΑΔݕূΛ௨ͣࣸ͞ਅͷެ։͕Մೳʹ • ҰൠਓʹΑΔߘ૿Ճ • ϓϥΠόγʔอޢͷͨΊϝλσʔλΛআ͢ΔΑ͏ʹ →ग़ॴෆ໌ͳࣸਅͷ֦ࢄεϐʔυ͕ݕূΛ্ճΔΑ͏ʹ https://en.wikipedia.org/wiki/
Hurricane_Shark ߑਫͷͨͼʹ֦ࢄ͞ΕΔ֗தαϝը૾
ϑΣΠΫࣸਅͷྺ࢙ʢ4ʣ ੜAI࣌ • ֶशʹΑΓߴ࣭ͳϑΣΠΫࣸਅΛੜՄೳʹ →ߴ࣭ͳϑΣΠΫը૾ΛੜՄೳʹ Nano BananaʹΑΔੜը૾
ϑΣΠΫࣸਅݕग़ͷݶք ϐΫηϧσʔλͷ׆༻-1 ϐΫηϧσʔλ͔ΒෆࣗવͳಛΛ୳͢ • Ճɾੜ࣌ಛ༗ͷϊΠζ • ͋Γ͑ͳ͍ཧݱɾੜཧݱ • ޫͷࣹ •
݂ • ଞͷը૾σʔλͱͷൺֱ ͜ΕΒͷΈΛֶशͨ͠ߴੑೳAIͳΒಥഁՄೳੑେ ը૾σʔλ 001011100… ϐΫηϧσʔλ ϝλσʔλ ࡱӨ࣌ใ Exif ѹॖใ ඇѹॖ Ϗοτਂ ̔bit ɾɾɾ ɾɾɾ
ϑΣΠΫࣸਅݕग़ͷݶք ϐΫηϧσʔλͷ׆༻-2 Ճɾੜ࣌ʹΥʔλʔϚʔΫΛຒΊࠐΈ • ՄࢹΥʔλʔϚʔΫ • ෆՄࢹΥʔλʔϚʔΫ • Google SynthID
ΥʔλʔϚʔΫΛຒΊࠐ·ͳ͍πʔϧ͕ΘΕΔՄೳੑ ը૾σʔλ 001011100… ϐΫηϧσʔλ ϝλσʔλ ࡱӨ࣌ใ Exif ѹॖใ ඇѹॖ Ϗοτਂ ̔bit ɾɾɾ ɾɾɾ https://deepmind.google/science/ synthid/
ϑΣΠΫࣸਅݕग़ͷݶք ϝλσʔλͷ׆༻ ExifͳͲΛνΣοΫͯ͠ ࣸਅͱͯ͠ͷ߹ੑνΣοΫ ҰํͰ • Exifࣗମվ͟Μɾੜ͞ΕΔՄೳੑ • SNSͰϝλσʔλআ͞Ε͕ͪ ը૾σʔλ
001011100… ϐΫηϧσʔλ ϝλσʔλ ࡱӨ࣌ใ Exif ѹॖใ ඇѹॖ Ϗοτਂ ̔bit ɾɾɾ ɾɾɾ
ͳͥࠓਂࠁͳͷ͔ σδλϧϑΥτ× SNS × ੜAI ࣌ ݱ • ݸਓ৫͕͋ΒΏΔతͰ •
ϑΣΠΫͩͱݟഁΕͳ͍AIࣸਅΛੜ͠ • SNS্Ͱେྔʹ֦ࢄ͞ΕΔ࣌ Ұఆͷ৴༻ͷ͋ͬͨੲͱҧ͍ʮຊʯͷࣸਅ·ͰٙΘΕΔΑ͏ʹͳͬͨ
৴༻ΛऔΓͨ͢Ίൃͷస ϑΣΠΫࣸਅΛʮݟൈ͘ʯͷͰͳ͘ຊΛʮূ໌͢Δʯ • C2PAن֨: Content Credentialsͷಋೖ • JPEG TrustʹΑΔ৴༻ࢦඪͷࠃࡍن֨Խ
ίϯςϯπฤूऀ ίϯςϯπར༻ऀ ίϯςϯπੜऀ C2PAن֨: Content Credentials • AdobeɾBBCɾSONYͳͲ͕ࡦఆ͢Δۀքඪ४ن֨ • ʮͲ͜Ͱɺ୭͕ɺͲͷΑ͏ʹ࡞ɾฤू͔ͨ͠ʯ
ͱ͍͏དྷྺใΛσδλϧॺ໊͖Ͱอଘ Χϝϥ ੜAI Adobe Photoshop Google Photo Youtube ը૾σʔλ ը૾σʔλ ը૾σʔλ ੜདྷྺใ ΛຒΊࠐΈ ฤूདྷྺใ ΛຒΊࠐΈ ฤूདྷྺใ Λ֬ೝ BBC News https://c2pa.org/
C2PA: Content Credentials ίϯςϯπσʔλʹॺ໊ࡁΈདྷྺϨίʔυσʔλຒΊࠐΈ • ੜऀใ͔ΒɺΧϝϥͰࡱӨ͞Ε͔ͨΘ͔Δ • ฤूऀใ͔ΒɺͲͷΑ͏ʹՃ͞Ε͔ͨΘ͔Δ • σʔλΛվ͟Μ͞Εͯॺ໊σʔλʹΑΓݕՄೳ
• ۀքඪ४ن֨ͳͷͰΤίγεςϜΛ࡞ΕΔ ը૾σʔλ 001011100… ϐΫηϧσʔλ ϝλσʔλ ࡱӨ࣌ใ Exif ѹॖใ ඇѹॖ Ϗοτਂ ̔bit ɾɾɾ ɾɾɾ དྷྺϨίʔυσʔλ ॺ໊͖ੜऀใ ॺ໊͖ฤूऀใ ॺ໊͖ฤूऀใ ɾɾɾ
σϞ • https://verify.contentauthenticity.org/ͰདྷྺσʔλΛνΣοΫͯ͠ΈΔ
JPEG Trust • JPEG͕ओಋ͢Δࠃࡍඪ४ن֨(ISO/IEC 21617) • 20251݄ʹن֨Խ • ڈࡳຈͰن֨Խʹ͚ͨձ͕ٞ͋ͬͨΒ͍͠ •
C2PAͷΑ͏ͳདྷྺใΛؚΊɺ ը૾ͷ৴༻ΛԽ ը૾ͷ৴༻ΛఆྔධՁͰ͖ΔΑ͏ʹͳΔ https://jpeg.org/jpegtrust/
ΤίγεςϜͷݱঢ় C2PAରԠൃల్্, JPEG Trustܾ·ͬͯͳ͍͜ͱଟ͍ • ੜऀ • Χϝϥ: Leica, Nikon,
Sony, Google PixelͷҰ෦ػछ • ੜAI: OpenAIͷDALLE • ฤू༰ͷՃ • Adobe Photoshop • ར༻ऀ • YouTube, Google Photo, BBC ੜऀ͔Βར༻ऀ·ͰC2PAରԠ͠ͳ͍ͱ͍͚ͳ͍ͷͰɺԸܙΛड͚ΒΕΔͷ͏গ͠ઌʹͳΓͦ͏
iOSΤϯδχΞͱͯ͠Ͱ͖Δ͜ͱ • ։ൃΞϓϦͰC2PAΤίγεςϜͷߩݙ • ը૾ฤूΞϓϦ → ը૾ʹདྷྺϨίʔυΛՃ • ը૾৴ΞϓϦ →
དྷྺϨίʔυΛআ͠ͳ͍ • χϡʔεΞϓϦ → JPEG TrustݕূʹΑΓ৴པνΣοΫ • SNSΞϓϦ → JPEG TrustݕূʹΑΓ৴པΛՄࢹԽ • iPhoneΧϝϥ͕C2PAରԠ͞ΕΔΑ͏ʹAppleѹྗ iOS͚SDK https://github.com/contentauth/c2pa-ios
͞ΒͳΔ৴༻ʹ͚ͯ • ΧϝϥࡱӨͷূ໌͕͞Εͨࣸਅ͕ʮਅ࣮ʯͱݶΒͳ͍ • ͞ΒͳΔٕज़ൃలɺϦςϥγʔڭҭ݁ہେࣄ DALL·E ੜը૾ ϑΣΠΫࣸਅΛΧϝϥͰࡱӨ https://fuushiga.com/its- media/
ϝσΟΞͷ෩
·ͱΊ • ݱࣸਅʹର͢Δ৴༻͕༳Β͍Ͱ͍Δ • C2PAͱJPEG TrustʹΑΓϑΣΠΫͷݕग़͔Β དྷྺʹΑΓʮຊʯূ໌ͷ࣌ • ΞϓϦΤϯδχΞΤίγεςϜ֦େߩݙ͢Δνϟϯε •
ͱ͍͑ɺ·ͩ·ͩ৴༻֫ಘʹ͚ͯվળͷ༨͋Γ ʮࣸਅ͏৴༻Ͱ͖ͳ͍ʁʯʹରͯ͠ɺղ૾͕ߴ͘ͳͬͨΒ͍Ͱ͢