Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
OCRを使ってゲームのアイテムをデータ化する
Search
Kishikawa Katsumi
May 22, 2026
Programming
200
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
OCRを使ってゲームのアイテムをデータ化する
プロトタイプを製品にする技術
OCRを使ってゲームのアイテムをデータ化する
Kishikawa Katsumi
May 22, 2026
More Decks by Kishikawa Katsumi
See All by Kishikawa Katsumi
Accessibility APIでテキストの内容、位置、サイズを取得する実装パターン
kishikawakatsumi
0
89
ゲームコントローラやキーボードのファームウェアをSwiftで書く
kishikawakatsumi
1
280
Running Swift without an OS
kishikawakatsumi
0
1.2k
浮動小数の比較について
kishikawakatsumi
0
640
Automatic Grammar Agreementと Markdown Extended Attributes について
kishikawakatsumi
0
280
愛される翻訳の秘訣
kishikawakatsumi
3
500
Private APIの呼び出し方
kishikawakatsumi
3
1.1k
iOSでSVG画像を扱う
kishikawakatsumi
0
270
Build your own WebP codec in Swift
kishikawakatsumi
2
2.9k
Other Decks in Programming
See All in Programming
半永久的に提供し続けられるプライベートクラウドを目指して ― 利用者の認知負荷を抑えるAPI抽象化とハードウェア世代交代の基盤設計
tomokon
0
440
CodeRabbitの効果検証と過ごしてみた3ヶ月
armondando
0
140
機械に任せるテスト、人が見るテスト ⽣成AIで引き直した、運⽤保守フェーズの線引き
dske104
0
160
カツオ、ご期待ください
suneo3476
0
150
Security issues being discussed on Web Platforms
petamoriken
0
1.4k
仕様駆動開発による爆速プロダクト開発 / Bakusoku Spec Driven Development
kobakei
0
190
wkhtmltopdfの次どうするか問題2026
willnet
2
1.8k
難しいけど、読めた。- OSSの入口に立った話。
sts11142
0
140
SalesForceを内製化!? ~ HR事業を支える顧客管理基盤のインフラを大公開 ~
oku053
0
130
更なる可用性を求めて、5年間運用したKotlinのアプリケーションをGoでリプレイスする話
ken_tunc
0
440
APNsからLive Activityを開始する話
yumnumm
0
150
IBM Bob Dojo #1 仕様駆動開発入門
oniak3ibm
PRO
0
350
Featured
See All Featured
The browser strikes back
jonoalderson
0
1.8k
Utilizing Notion as your number one productivity tool
mfonobong
4
610
Primal Persuasion: How to Engage the Brain for Learning That Lasts
tmiket
0
490
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
18k
Building a Modern Day E-commerce SEO Strategy
aleyda
45
9.2k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
50
10k
Measuring Dark Social's Impact On Conversion and Attribution
stephenakadiri
2
300
B2B Lead Gen: Tactics, Traps & Triumph
marketingsoph
0
260
Building AI with AI
inesmontani
PRO
1
1.3k
Optimising Largest Contentful Paint
csswizardry
37
4k
ラッコキーワード サービス紹介資料
rakko
1
5.2M
The Limits of Empathy - UXLibs8
cassininazir
1
700
Transcript
ϓϩτλΠϓΛʹ͢Δٕज़ LJTIJLBXBLBUTVNJ !LJTIJLBXBLBUTVNJ!IBDIZEFSNJP LJTIJLBXBLBUTVNJ 0$3ΛͬͯήʔϜͷΞΠςϜΛσʔλԽ͢Δ
None
ϓϩτλΠϓΛʹ͢Δٕज़ r ݸͷΞΠςϜΛਖ਼֬ʹσʔλԽ͢Δ r ̍ͭʹ͖ͭඵҎʹಡΈऔΕΔ r ήʔϜͷݴޠ͕ຊޠͱӳޠͷͲͪΒͰಡΈऔΕΔ
ϓϩτλΠϓΛʹ͢Δٕज़ r ݸͷΞΠςϜΛਖ਼֬ʹσʔλԽ͢Δ r ̍ͭʹ͖ͭඵҎʹಡΈऔΕΔ r ήʔϜͷݴޠ͕ຊޠͱӳޠͷͲͪΒͰಡΈऔΕΔ ਫ਼
ϓϩτλΠϓΛʹ͢Δٕज़ r ݸͷΞΠςϜΛਖ਼֬ʹσʔλԽ͢Δ r ̍ͭʹ͖ͭඵҎʹಡΈऔΕΔ r ήʔϜͷݴޠ͕ຊޠͱӳޠͷͲͪΒͰಡΈऔΕΔ ਫ਼
ϓϩτλΠϓΛʹ͢Δٕज़ r ݸͷΞΠςϜΛਖ਼֬ʹσʔλԽ͢Δ r ̍ͭʹ͖ͭඵҎʹಡΈऔΕΔ r ήʔϜͷݴޠ͕ຊޠͱӳޠͷͲͪΒͰಡΈऔΕΔ ਫ਼ ॊೈੑ
4BNQMF$PEF HJUIVCDPNLJTIJLBXBLBUTVNJ$BNFSB0$3
None
None
େ͖͞ ৭ छྨ ޮՌςΩετ
4UFQ3BX0$3 actor OCRRunner { private var busy = false func
process(_ cgImage: CGImage) async -> [RecognizedTextObservation]? { guard !busy else { return nil } busy = true defer { busy = false } var request = RecognizeTextRequest() request.recognitionLanguages = [ Locale.Language(identifier: "ja-JP"), Locale.Language(identifier: "en-US"), ] request.recognitionLevel = .accurate request.usesLanguageCorrection = false return try? await request.perform(on: cgImage) } }
None
4UFQ4UBCJMJUZ'JMUFS
let windowSize: Int = 5 let minHits: Int = 3
func updateStability(with results: [RecognizedTextObservation]) { let textsThisFrame = Set( results.compactMap { (observation) -> String? in let raw = observation.topCandidates(1).first?.string ?? "" let t = raw.trimmingCharacters(in: .whitespacesAndNewlines) return t.isEmpty ? nil : t } ) recentTextSets.append(textsThisFrame) if recentTextSets.count > windowSize { recentTextSets.removeFirst(recentTextSets.count - windowSize) } var counts: [String: Int] = [:] for set in recentTextSets { for t in set { counts[t, default: 0] += 1 } } let stable = counts.filter { $0.value >= minHits } stableTexts = Set(stable.keys) stableLines = stable .map { StableLine(text: $0.key, hits: $0.value) } .sorted { $0.hits == $1.hits ? $0.text < $1.text : $0.hits > $1.hits } } ϑϨʔϜͰճҎ্ग़ݱͨ͠ ςΩετΛ࠾༻͢Δɻ
None
Ԍ߈ܸྗ্ঢ Ԍ߈ܸྗ্ঢ ཕ߈ܸྗ্ঢ Ԍ߈ܸྗ্ঢ ཕ߈ܸྗ্ঢ ग़ܸ࣌ͷثʹ ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ
ཕ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ཕ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ཕ߈ܸྗΛՃ ϦϯάόοϑΝʹΑΔ҆ఆੑͷ্ /ϑϨʔϜத.ճҎ্ग़ͨςΩετΛ࠾༻͢Δ
Ԍ߈ܸྗ্ঢ Ԍ߈ܸྗ্ঢ ཕ߈ܸྗ্ঢ Ԍ߈ܸྗ্ঢ ཕ߈ܸྗ্ঢ ग़ܸ࣌ͷثʹ ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ
ཕ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ཕ߈ܸྗΛՃ ग़ܸ࣌ͷثʹ ཕ߈ܸྗΛՃ ϦϯάόοϑΝʹΑΔ҆ఆੑͷ্ /ϑϨʔϜத.ճҎ্ग़ͨςΩετΛ࠾༻͢Δ
4UFQ30* 3FHJPOPG*OUFSFTU
ΨΠυͷൣғ͚ͩಡΈऔΔ ؔͳ͍ςΩετΛಡ·ͳ͍ɾ্
static let roiOnScreen = CGRect(x: 0.08, y: 0.30, width: 0.84,
height: 0.32) static let visionROI: NormalizedRect = { let r = roiOnScreen return NormalizedRect(x: r.minX, y: 1 - r.maxY, width: r.width, height: r.height) }() func process( _ cgImage: CGImage, roi: NormalizedRect ) async -> [RecognizedTextObservation]? { ... request.regionOfInterest = roi ... } 6*ͷ࠲ඪͷ7JTJPOGSBNFXPSLͷ ࠲ඪʹมͯ͠ηοτ ΨΠυͷൣғ͚ͩಡΈऔΔ ؔͳ͍ςΩετΛಡ·ͳ͍ɾ্
None
4UFQ.BTUFS.BUDIJOH
Ϛελʔσʔλͱর߹
func bestMatch(for input: String) -> (master: Master, distance: Int)? {
let n = normalize(input) var best: (Master, Int)? for (key, master) in normalizedKeys { if abs(key.count - n.count) > 5 { continue } let d = levenshtein(n, key) if best == nil || d < best!.1 { best = (master, d) } } return best } // डཧ: ڑ ≤ max(1, |master| × 0.3) ≒ score ≥ 0.70 let threshold = max(1, Int(Double(master.textJa.count) * 0.3)) guard match.distance <= threshold else { return nil } ฤूڑ -FWFOTIUFJO%JTUBODF ͰҰகΛఆ Ϛελʔσʔλͱর߹
None
ΞϧΰϦζϜ )BNNJOHڑ ܭࢉྔͱΈ ࠷ 903 QPQDPVOU ɻಉ͡͞ͷจࣈྻͰʮҟͳΔҐஔͷʯΛ͑Δ ࠾༻͠ͳ͔ͬͨཧ༝ 0$3ͷจࣈGSBNF͝ͱʹ༳ΕΔͨΊద༻ෆՄɻจࣈͰ͕͞ҧ͏ͱ͑ͳ͍ ΞϧΰϦζϜ
OHSBN+BDDBSEྨࣅ ܭࢉྔͱΈ ͍ ू߹ԋࢉ ɻจࣈ/HSBNू߹Λ࡞Γc"ˬ#cc"˫#cΛܭࢉ ࠾༻͠ͳ͔ͬͨཧ༝ จࣈॱংΛࣺͯΔͨΊʮ߈ܸྗ্ঢʯͱʮ্ঢ߈ܸྗʯΛ۠ผͰ͖ͳ͍ ΞϧΰϦζϜ %BNFSBV-FWFOTIUFJO ܭࢉྔͱΈ -FWFOTIUFJOͱ΄΅ಉ Θ͔ͣʹ͍ ɻ-FWFOTIUFJO ྡจࣈͷೖΕସ͑ΛίετͰڐ༰ ࠾༻͠ͳ͔ͬͨཧ༝ 0$3ͰUSBOTQPTJUJPOΑΓ७ਮͳஔޡΓ͕େͰɺԸܙ͕ബ͍ ΞϧΰϦζϜ +BSP8JOLMFS ܭࢉྔͱΈ -FWFOTIUFJOΑΓఆ͕খ͍͞ɻҰகจࣈ USBOTQPTJUJPO ڞ௨QSF fi YՃͰྨࣅΛग़͢ ࠾༻͠ͳ͔ͬͨཧ༝ ͍ਓ໊ɾॅॴ͚ʹ࠷దԽ͞ΕͨؔͰɺʙจࣈͷFGGFDUจͰ-FWFOTIUFJOͱͷ͕ࠩग़ʹ͍͘ ͦͷଞͷর߹ΞϧΰϦζϜ
ͦͷଞͷর߹ΞϧΰϦζϜ ΞϧΰϦζϜ 4ZN4QFMM ܭࢉྔͱΈ ࣄલܭࢉͰ࣮࣭0 MPPLVQɻNBTUFSΛʮFEJU≤Lͷશมܗʯʹల։ͨࣙ͠ॻΛQSFCVJME͠ɺೖྗల։ͯ͠IBTIিಥΛݕग़ ࠾༻͠ͳ͔ͬͨཧ༝ ڑ≤·Ͱ͔͠Ҿ͚ͣ͞มಈʹऑ͍ɻࣙॻల։Ͱ0 -
ͷϝϞϦு͕͋Γɺ݅نͰԸܙ͕͍͠ ΞϧΰϦζϜ #,USFF ܭࢉྔͱΈ ฏۉ0 MPH/ ఔͷۙ୳ࡧɻจࣈྻۭؒʹNFUSJDUSFFΛߏங͠ɺڑEҎͷͷΛͰߜΔ ࠾༻͠ͳ͔ͬͨཧ༝ ෦Ͱ݁ہ-FWFOTIUFJOΛݺͿɻ݅نͰΠϯσοΫεߏஙίετ͕ԸܙΛ্ճΔ ΞϧΰϦζϜ 4PVOEFY.FUBQIPOF ԻӆIBTI ܭࢉྔͱΈ ͍ ఆ࣌ؒ ɻൃԻྨࣅੑͰಉΫϥεΛ࡞ΓɺϋογϡҰகͰൺֱ ࠾༻͠ͳ͔ͬͨཧ༝ ӳޠԻӆ͚ͷࢉ๏Ͱ͋Γɺຊޠ$+,ʹద༻Ͱ͖ͳ͍ ΞϧΰϦζϜ จ຺ϞσϧຒΊࠐΈڑ #&35 ܭࢉྔͱΈ େ෯ʹ͍ ेNTΫΤϦ ɻจࣈྻΛߴ࣍ݩϕΫτϧʹຒΊࠐΈɺDPTJOFڑͰྨࣅΛܭࢉ ࠾༻͠ͳ͔ͬͨཧ༝ ϦΞϧλΠϜಈըʹॏ͗͢ΔɻϞσϧ͕NBTUFSͷEPNBJOޠኮɺಛʹήʔϜޠΛΒͳ͍
ೖྗσʔλΛΩϨΠʹ͢Δࡉ͔͍ r Χˠྗ̍ͭΧλΧφͷΧΛࣈͷྗ ͔ͪΒ ʹஔ͖͑Δ ‣ ߈ܸʮྗʯͳͲܾ·ͬͨύλʔϯʹ͍ͭͯ r શ֯ɾ֯Λଗ͑Δ r
ۭനΛআڈ͢Δ Ϛονϯάͷલʹਖ਼نԽͯ͠ϊΠζΛআڈ͢Δ
ೝࣝΛ্ͤ͞Δࡉ͔͍ 0xD5D5EBF7EAD5D5EB ݩը૾ 9×8 grayscale 8×8 bit pattern 64-bit hash
E)BTIΛϋϛϯάڑͰൺֱͯ͠ྨࣅͷϑϨʔϜΛແࢹ͢Δ
None
·ͱΊ r Ϛελʔσʔλʢਖ਼ղͷఆٛʣΛ͑Δ r ϑϨʔϜ୯ҐͰޡೝࣝΛϑΟϧλʔ͢Δ ‣ .VMUJGSBNF$POTFOTVT r ࣄલʹೖྗΛΫϦʔϯʹ͢Δ ‣
ςΩετͷਖ਼نԽ ‣ Α͋͘ΔޡೝࣝΛஔ r ڍಈΛܾఆతɾ؍ଌՄೳʹ͢Δ ߴ͍࣭Ͱ࠶ݱੑͷ͋Δ݁ՌΛग़ྗ͢ΔͨΊͷ
3FTPVSDFT r IUUQTHJUIVCDPNLJTIJLBXBLBUTVNJ$BNFSB0$3 r IUUQTHJUIVCDPNLJTIJLBXBLBUTVNJ3FMJD'PSHF r IUUQTBQQTBQQMFDPNVTBQQSFMJDGPSHFJE r IUUQTSFMJDGPSHFQBHFTEFW