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ARKitを触りながら振り返る
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hira
October 11, 2022
Technology
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ARKitを触りながら振り返る
iOSDC Japan 2022 After Talk LT1 スライド
hira
October 11, 2022
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Transcript
4BOTBOגࣜձٕࣾज़ຊ෦.PCJMF"QQMJDBUJPOάϧʔϓ ฏࢁஐݾ "3,JUΛ৮Γͳ͕ΒৼΓฦΔ 88%$ J04%$ J04%$+BQBO"GUFS5BML
ࣗݾհ w !FMV w 4BOTBOגࣜձࣾ৽ଔೖࣾ w J04ΤϯδχΞ📱 w ͖ήʔϜ🎮 ෩ܠ🏞
͓͠ͳ͕͖ "3,JUτϐοΫ 0CKFDU$BQUVSF .PUJPO$BQUVSF ͓·͚
"3,JU 88%$
w ʹ"3,JU͔ΒຖΞοϓσʔτ͕ଓ͘ w ͷJ1BE1SPʹഎ໘5SVF%FQUIΧϝϥ͕ࡌ w ͔Β1SPγϦʔζʹ-J%"3εΩϟφࡌ w νοϓͷੑೳ্͕͠ෳࡶͳ͜ͱ͕Ͱ͖ΔΑ͏ʹͳͬͨ
w ,ʹରԠ w ΧϝϥػೳڧԽ w 1MBOFBODIPSͷਫ਼্ w ϞʔγϣϯΩϟϓνϟͷੑೳ্ w -PDBUJPOBODIPSͷҬ֦େ
τϐοΫ %JTDPWFS"3,JU
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
,ʹରԠ w ैདྷը૾Λॖখ͔ͯ͠ΒॲཧΛߦͬͯϨϯμϦϯά͍ͯͨ͠ w ,ͷը૾Λॲཧ͢ΔϝϞϦϦιʔεܭࢉೳྗෆނ w ࠷৽ͷϋʔυΣΞύϫʔ 💪 Ͱ,ॲཧ͕Ͱ͖ΔΑ͏ʹͳͬͨ
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά #FGPSF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά #FGPSF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά #FGPSF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά #FGPSF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά "GUFS ,NPEF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED 💪
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά "GUFS ,NPEF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED 💪
,ʹରԠ w ,ͰࡱӨ w ͰฏۉԽ͠ॖখ w NTຖʹॲཧ 㲈GQT
w ϨϯμϦϯά "GUFS ,NPEF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED 💪
w ୯७ͳಈըͰ,GQT্͕ݶ w ЋͳॲཧΛ͢ΔͷͰGQTݶք
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
1MBOFBODIPSͷਫ਼্ w 1MBOFBODIPSʹઃఆͨ͠ΦϒδΣΫτ w ֯ɼ෯ͱߴ͞ΛೝࣝՄೳʹ IUUQTEFWFMPQFSBQQMFDPN
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
-PDBUJPOBODIPSͷҬ֦େ w 714ͱ͍͏Ґஔਪఆٕज़ w ҐஔਪఆʹۭؒͷεΩϟϯσʔλ͕ඞཁ w (14 ηϯαʔ ө૾ʹΑΓҐஔ͖ͷਪఆ w
౦ژؚΊෳͷࢢ͕Ճ͞Εͨ IUUQTEFWFMPQFSBQQMFDPN
-PDBUJPOBODIPSͷҬ֦େ w 714ͱ͍͏Ґஔਪఆٕज़ w ҐஔਪఆʹۭؒͷεΩϟϯσʔλ͕ඞཁ w (14 ηϯαʔ ө૾ʹΑΓҐஔ͖ͷਪఆ w
౦ژؚΊෳͷࢢ͕Ճ͞Εͨ IUUQTEFWFMPQFSBQQMFDPN
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
w ,ʹରԠ👉ϚγϯύϫʔͰॲཧͷޮԽ w ΧϝϥػೳڧԽ👉"34FTTJPOதʹ੩ࢭըΛΩϟϓνϟՄೳʹ )%3 w 1MBOFBODIPSͷਫ਼্👉ฏ໘ೝࣝํͷਫ਼্͕ w ϞʔγϣϯΩϟϓνϟੑೳ্👉શମతͳਫ਼্ ࣖݕग़Մೳ
w -PDBUJPOBODIPSͷҬ֦େ👉Ҭ֦େͰ౦ژՃ
͓ͼ
XBSOJOHMJCPCKD"EZMJCJTCFJOHSFBEGSPNQSPDFTTNFNPSZ 5IJTJOEJDBUFTUIBU--%#DPVMEOPUGJOEUIFPOEJTLTIBSFE DBDIFGPSUIJTEFWJDF5IJTXJMMMJLFMZSFEVDFEFCVHHJOH QFSGPSNBODF
࣮ػσόοάΛ͠Α͏ͱ͢Δͱىಈʹd͔͔ͬͨΓ "34FTTPO్͕தͰམͪɼσϞΛ༻ҙͰ͖·ͤΜͰͨ͠
w SNSd-JCSBSZ%FWFMPQFS9DPEFJ04a%FWJDF4VQQPSU w J04CFUBͰͳ͘ϦϦʔε൛෮ݩ w 9DPEFCFUBΛআ ϦϦʔε൛ͷΈଘࡏ w 👆Ͱͳ͔ͥղܾ
0CKFDU$BQUVSF 88%$
0CKFDU$BQUVSF w 88%$Ͱ3FBMJUZLJUʹՃ w ϞϊΛෳ໘͔ΒࡱӨ w ߹ͯ̏͠%ΦϒδΣΫτΛ࡞ w ཁ݅-J%"3ࡌ J04
"Ҏ߱ w ..BDPS".%(16 IUUQTEFWFMPQFSBQQMFDPN
0CKFDU$BQUVSF "3,JUͱ3FBMJUZ,JU w "3,JUϕʔεͱͳΔϑϨʔϜϫʔΫ w εΩϟϯΦϒδΣΫτදࣔ w 3FBMJUZ,JUԾͱݱ࣮ͷ౷߹ w ΦϒδΣΫτͷૢ࡞
w ॲཧɾܭࢉ w %ϨϯμϦϯά IUUQTEFWFMPQFSBQQMFDPN
0CKFDU$BQUVSF w "QQMFͷެࣜαϯϓϧ w ༰ʜࡱӨॲཧΛݟͯΈΔ
/// - Tag: WillBeginCapture func photoOutput(_ output: AVCapturePhotoOutput, willBeginCaptureFor resolvedSettings:
AVCaptureResolvedPhotoSettings) { maxPhotoProcessingTime = resolvedSettings.photoProcessingTimeRange.start + resolvedSettings.photoProcessingTimeRange.duration } /// - Tag: WillCapturePhoto func photoOutput(_ output: AVCapturePhotoOutput, willCapturePhotoFor resolvedSettings: AVCaptureResolvedPhotoSettings) { willCapturePhotoAnimation() // Retrieve the gravity vector at capture time. if motionManager.isDeviceMotionActive { gravity = motionManager.deviceMotion?.gravity logger.log("Captured gravity vector: \(String(describing: self.gravity))") } guard let maxPhotoProcessingTime = maxPhotoProcessingTime else { return } // Show a spinner if processing time exceeds one second. let oneSecond = CMTime(seconds: 1, preferredTimescale: 1) if maxPhotoProcessingTime > oneSecond { photoProcessingHandler(true) } } ॏྗՃΛอଘ
/// - Tag: DidFinishProcessingPhoto func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo:
AVCapturePhoto, error: Error?) { photoProcessingHandler(false) if let error = error { print("Error capturing photo: \(error)") photoData = nil } else { // Cache the HEIF representation of the data. photoData = photo } // Cache the depth data, if it exists, as a disparity map. logger.log("DidFinishProcessingPhoto: photo=\(String(describing: photo))") if let depthData = photo.depthData?.converting(toDepthDataType: kCVPixelFormatType_DisparityFloat32), let colorSpace = CGColorSpace(name: CGColorSpace.linearGray) { let depthImage = CIImage( cvImageBuffer: depthData.depthDataMap, options: [ .auxiliaryDisparity: true ] ) depthMapData = context.tiffRepresentation(of: depthImage, format: .Lf, colorSpace: colorSpace, options: [.disparityImage: depthImage]) } else { logger.error("colorSpace .linearGray not available... can't save depth data!") depthMapData = nil } } ਂϚοϓΛอଘ
if let photoOutputConnection = self.photoOutput.connection(with: .video) { photoOutputConnection.videoOrientation = videoPreviewLayerOrientation
} var photoSettings = AVCapturePhotoSettings() // Request HEIF photos if supported and enable high-resolution photos. if self.photoOutput.availablePhotoCodecTypes.contains(.hevc) { photoSettings = AVCapturePhotoSettings( format: [AVVideoCodecKey: AVVideoCodecType.hevc]) } // Turn off the flash. The app relies on ambient lighting to avoid specular highlights. if self.videoDeviceInput!.device.isFlashAvailable { photoSettings.flashMode = .off } // Turn on high-resolution, depth data, and quality prioritzation mode. photoSettings.isHighResolutionPhotoEnabled = true photoSettings.isDepthDataDeliveryEnabled = self.photoOutput.isDepthDataDeliveryEnabled photoSettings.photoQualityPrioritization = self.photoQualityPrioritizationMode // Request that the camera embed a depth map into the HEIC output file. photoSettings.embedsDepthDataInPhoto = true // Specify a preview image. if !photoSettings.__availablePreviewPhotoPixelFormatTypes.isEmpty { photoSettings.previewPhotoFormat = [kCVPixelBufferPixelFormatTypeKey: photoSettings.__availablePreviewPhotoPixelFormatTypes.first!, kCVPixelBufferWidthKey: self.previewWidth, kCVPixelBufferHeightKey: self.previewHeight] as [String: Any] logger.log("Found available previewPhotoFormat: \(String(describing: photoSettings.previewPhotoFormat))") } else { logger.warning("Can't find preview photo formats! Not setting...") } // Tell the camera to embed a preview image in the output file. photoSettings.embeddedThumbnailPhotoFormat = [ AVVideoCodecKey: AVVideoCodecType.jpeg, AVVideoWidthKey: self.thumbnailWidth, AVVideoHeightKey: self.thumbnailHeight ] DispatchQueue.main.async { self.isHighQualityMode = photoSettings.isHighResolutionPhotoEnabled && photoSettings.photoQualityPrioritization == .quality } Χϝϥͱը૾ͷઃఆ
ࡱӨը૾ ਂϚοϓ ॏྗՃ 9 : ;
let inputFolderUrl = URL(fileURLWithPath: inputFolder, isDirectory: true) let configuration =
makeConfigurationFromArguments() logger.log("Using configuration: \(String(describing: configuration))") // Try to create the session, or else exit. var maybeSession: PhotogrammetrySession? = nil do { maybeSession = try PhotogrammetrySession(input: inputFolderUrl, configuration: configuration) logger.log("Successfully created session.") } catch { logger.error("Error creating session: \(String(describing: error))") Foundation.exit(1) } ϑΥϧμΛ͚ͩ͢
let entity = try! ModelEntity.load(named: "test.usdz") let anchorEntity = AnchorEntity(plane:
.any) anchorEntity.addChild(entity) arView.scene.addAnchor(anchorEntity) &OUJUZͷՃ
w ෳͷࣸਅσʔλ͔Β%ΦϒδΣΫτΛ࡞ w ղ૾ใ͕ଟ͍΄Ͳਫ਼͕ߴ͘ͳΔ w "3,JUͰ,ࡱӨ͕ରԠ͠Ͳ͏มΘͬͨʁ
let config = ARWorldTrackingConfiguration() // ͕ѻ͑Δ࠷ߴը࣭ͰͷϑΥʔϚοτΛฦ͢ if let hiResCaptureVideoFormat =
ARWorldTrackingConfiguration.recommendedVideoFormatForHighResolutionFrameCapturing { config.videoFormat = hiResCaptureVideoFormat } // 4kը࣭͕ѻ͑Δ߹ͷΈϑΥʔϚοτΛฦ͢ if let res4kCaptureVideoFormat = ARWorldTrackingConfiguration.recommendedVideoFormatFor4KResolution { config.videoFormat = res4kCaptureVideoFormat } "34FTTJPOͰͷө૾ϑΥʔϚοτ
arView.session.captureHighResolutionFrame { arFrame, error in guard let imageBuffer = arFrame?.capturedImage
else { return } let ciImage = CIImage(cvPixelBuffer: imageBuffer) let w = CGFloat(CVPixelBufferGetWidth(imageBuffer)) let h = CGFloat(CVPixelBufferGetHeight(imageBuffer)) let rect:CGRect = CGRect.init(x: 0, y: 0, width: w, height: h) let context = CIContext.init() guard let cgImage = context.createCGImage(ciImage, from: rect) else { return } let uiimage = UIImage(cgImage: cgImage).rotated(by: 90.0 * CGFloat.pi / 180) UIImageWriteToSavedPhotosAlbum(uiimage, self, nil, nil) } "34FTTJPOதͷϑϨʔϜऔಘ "34FTTJPO͕ઃఆΛΑ͠ͳʹͯ͘͠Εͯ "3,JUͷϝιουΘ͔Γ͍͢
.PUJPO$BQUVSF 88%$
.PUJPO$BQUVSF w 88%$"3,JUͰൃද͞Εͨػೳ w ࣍ݩը૾ͱ-J%"3εΩϟφΛ༻͍ͨਂใ͔Βͷ࢟ਪఆ w ਪఆ͞ΕͨؔઅͷใΛ"3"ODIPS͔ΒऔಘͰ͖Δɽ
"3"ODIPS w Ծۭ͔ؒΒݟͨݱ࣮ੈքʹ͓͚ΔΦϒδΣΫτͷҐஔ͖ w ϫʔϧυ࠲ඪܥʹ͓͚Δ࠲ඪϙΠϯτʹͳΔ
"3"ODIPSͷछྨ w "31MBOF"ODIPSݱ࣮ۭ͔ؒΒݕग़͞Εͨฏ໘ͷҐஔܗঢ়ใ w "3*NBHF"ODIPS"3ϚʔΧʔ༧Ί༻ҙ͞Εͨը૾ͷใ w "30CKFDU"ODIPSϙϦΰϯϝογϡ͔Βݕग़ͨ͠ཧతͳใ w "3#PEZ"ODIPSਓͷؔઅͷใ w
"3'BDF"ODIPSਓͷإͷύʔπ͖ͷใ w "3.FTI"ODIPS "3(FP"ODIPS "3"QQ$MJQ$PEF"ODIPSʜ
let entity = try! ModelEntity.load(named: "test.usdz") let anchorEntity = AnchorEntity(plane:
.any) anchorEntity.addChild(entity) arView.scene.addAnchor(anchorEntity) &OUJUZͷՃ
"34$/7JFX "3,JU 4DFOF,JU "34FTTJPJO "3'SBNF "3"ODIPS "37JFX 3FBMJUZ,JU 4DFOF "ODIPS&OUJUZ
.PEFM&OUJUZ "ODIPS&OUJUZ &OUJUZ &OUJUZ $PO fi HVSBUJPO "3'SBNF "3"ODIPS
"3,JU 3FBMJUZ,JU "37JFX 4DFOF "ODIPS&OUJUZ .PEFM&OUJUZ "ODIPS&OUJUZ &OUJUZ &OUJUZ "34FTTJPJO
$PO fi HVSBUJPO
.PUJPO$BQUVSF w Ͳ͏࣮ߦ͢Δͷ͔ w ͜ΕެࣜͰ༗Γl$BQUVSJOH#PEZ.PUJPOJO%z w దͳϞσϧͷ༻ҙ w "3#PEZ5SBDLJOH$PO fi
HVSBUJPOͰ"34FTTJPOΛىಈ w Ϟσϧϩʔυ
Ϟσϧͷ༻ҙ
let configuration = ARBodyTrackingConfiguration() arView.session.run(configuration) arView.scene.addAnchor(characterAnchor) if let entity =
try? Entity.loadBodyTracked(named: "character/robot") { self.character = entity } Ϟσϧͷϩʔυ 4DFOFʹϞσϧͷ"ODIPSΛઃஔ Ϟσϧͷ#PEZ5SBDLFE&OUJUZͷ༻ҙ
func session(_ session: ARSession, didUpdate anchors: [ARAnchor]) { for anchor
in anchors { guard let bodyAnchor = anchor as? ARBodyAnchor else { continue } let bodyPosition = simd_make_float3(bodyAnchor.transform.columns.3) characterAnchor.position = bodyPosition + characterOffset characterAnchor.orientation = Transform(matrix: bodyAnchor.transform).rotation if let character = character, character.parent == nil { characterAnchor.addChild(character) } } } Ϟσϧͱ"3#PEZ"ODIPSͷଓ ϞσϧଆͰKPJOU/BNF߹Θ͍ͤͯΔͷͰɼ"ODIPSʹॏͶΔ͚ͩ
͓·͚
w ϐʔϓϧΦΫϧʔδϣϯ w 3PPN1MBO
ϐʔϓϧΦΫϧʔδϣϯ w ਂใ͔ΒਓͷલޙؔΛೝࣝ w "38PSME5SBDLJOH$PO fi HVSBUJPO w DPO
fi HGSBNF4FNBOUJDT<QFSTPO4FHNFOUBUJPO8JUI%FQUI>
let cameraAnchor = AnchorEntity(.camera) self.scene.addAnchor(cameraAnchor) cameraAnchor.addChild(background) background.position = [0,0,-5] എܠΛۭؒͷNޙΖʹઃஔ
ਓͷલޙҐஔΛೝ͍ࣝͯ͠ΔͷͰɼ ਓ͕̑NޙΖʹ͕͞Δͱਓ͕ӅΕΔ
w ;PPNͷഎܠكʹޙΖͷՈ۩͕ࣸΓࠐΜͩΓ͢Δ w ਓͷલޙҐஔΛೝࣝͰ͖Δͨͩը૾͔Βͷਓநग़Ͱͳ͍ w ࠓճͷ88%$ͰJ1IPOFΛΣϒΧϝϥʹ͢ΔτϐοΫ͋Γ w Ξοϓσʔτʹظ
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let roomCaptureView = RoomCaptureView(frame: view.frame) view.addSubview(roomCaptureView) roomCaptureView.captureSession.run(configuration: .init()) roomCaptureView.captureSession.stop() %FMFHBUFͰྃ࣌ʹ෦ͷΩϟϓνϟʔσʔλ͕ड͚औΕΔ
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