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
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
160
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
Running Swift without an OS
kishikawakatsumi
0
970
浮動小数の比較について
kishikawakatsumi
0
590
Automatic Grammar Agreementと Markdown Extended Attributes について
kishikawakatsumi
0
270
愛される翻訳の秘訣
kishikawakatsumi
3
480
Private APIの呼び出し方
kishikawakatsumi
3
1k
iOSでSVG画像を扱う
kishikawakatsumi
0
250
Build your own WebP codec in Swift
kishikawakatsumi
2
2.6k
iOSDC 2024 SMBファイル共有をSwiftで実装する
kishikawakatsumi
1
330
Enhancing Applications with Accessibility API
kishikawakatsumi
3
6.2k
Other Decks in Programming
See All in Programming
仕様書を書く前にハーネスを作る - Agent Native開発は「探索を速く、判定を固く」
gotalab555
4
1.6k
JAWS-UG横浜 #102 AWSサ終供養LT会 成仏できない AWS サービスたち 〜本日、三体供養します〜
maroon1st
0
340
2年かけて Deno に DOMMatrix を実装した話 / How I implemented DOMMatrix in Deno over two years
petamoriken
0
210
5分で問診!Composer セキュリティ健康診断
codmoninc
0
930
ITヒヤリハットを整理してみた ~ライフサイクルと原因から考える再発防止策~
koukimiura
1
140
全PRの83%がAIレビューだけでマージできるようになった開発組織はその後どうなったか
athug
1
1.5k
OpenSpecのproposalにbrainstormingを持たせてみた
tigertora7571
1
210
Apache Hive: Toward a Cloud Native Lakehouse
okumin
0
180
楽しそうなつよつよエンジニアと目が死んでる僕/A brilliant engineer having a blast, and dead-eyed me.
3l4l5
2
100
PHP Application における Kubernetes 内 gRPC 通信
ganchiku
0
590
komatsuna「分散システムにおけるバグ分析手法」
komatsunaqa
0
250
GDG Korea Android: 2026 I/O Extended ~ What's new in Android development tools
pluu
0
220
Featured
See All Featured
Navigating Weather and Climate Data
rabernat
0
470
How to Grow Your eCommerce with AI & Automation
katarinadahlin
PRO
1
230
How to Build an AI Search Optimization Roadmap - Criteria and Steps to Take #SEOIRL
aleyda
1
2.1k
GraphQLとの向き合い方2022年版
quramy
50
15k
A brief & incomplete history of UX Design for the World Wide Web: 1989–2019
jct
2
450
For a Future-Friendly Web
brad_frost
183
10k
We Are The Robots
honzajavorek
0
290
Keith and Marios Guide to Fast Websites
keithpitt
413
23k
Rails Girls Zürich Keynote
gr2m
96
14k
30 Presentation Tips
portentint
PRO
1
360
BBQ
matthewcrist
89
10k
Getting science done with accelerated Python computing platforms
jacobtomlinson
2
410
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