ARkit图像识别和图像的AR可视化
ARkit image recognition and AR visualization of the image
在我工作的公司需要做这个申请。我必须识别一幅画的图像，并在识别后在 AR 中将其可视化（实际上我在 AR 中找到真实的图片和绘画上方）我将文本或具有相关图片的各种特征的可选点可视化。目前，我有这段 AR 代码可以识别有问题的图像，并且我在其上方可视化了一个计划。你能帮我用上面列出的功能在图片上方创建一个视图吗？
import ARKit
import SceneKit
import UIKit
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
@IBOutlet weak var blurView: UIVisualEffectView!
/// The view controller that displays the status and "restart experience" UI.
lazy var statusViewController: StatusViewController = {
return childViewControllers.lazy.compactMap({ [=10=] as? StatusViewController }).first!
}()
/// A serial queue for thread safety when modifying the SceneKit node graph.
let updateQueue = DispatchQueue(label: Bundle.main.bundleIdentifier! +
".serialSceneKitQueue")
/// Convenience accessor for the session owned by ARSCNView.
var session: ARSession {
return sceneView.session
}
// MARK: - View Controller Life Cycle
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
sceneView.session.delegate = self
// Hook up status view controller callback(s).
statusViewController.restartExperienceHandler = { [unowned self] in
self.restartExperience()
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// Prevent the screen from being dimmed to avoid interuppting the AR experience.
UIApplication.shared.isIdleTimerDisabled = true
// Start the AR experience
resetTracking()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
session.pause()
}
// MARK: - Session management (Image detection setup)
/// Prevents restarting the session while a restart is in progress.
var isRestartAvailable = true
/// Creates a new AR configuration to run on the `session`.
/// - Tag: ARReferenceImage-Loading
func resetTracking() {
guard let referenceImages = ARReferenceImage.referenceImages(inGroupNamed: "AR Resources", bundle: nil) else {
fatalError("Missing expected asset catalog resources.")
}
let configuration = ARWorldTrackingConfiguration()
configuration.detectionImages = referenceImages
session.run(configuration, options: [.resetTracking, .removeExistingAnchors])
statusViewController.scheduleMessage("Look around to detect images", inSeconds: 7.5, messageType: .contentPlacement)
}
// MARK: - ARSCNViewDelegate (Image detection results)
/// - Tag: ARImageAnchor-Visualizing
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
guard let imageAnchor = anchor as? ARImageAnchor else { return }
let referenceImage = imageAnchor.referenceImage
updateQueue.async {
// Create a plane to visualize the initial position of the detected image.
let plane = SCNPlane(width: referenceImage.physicalSize.width,
height: referenceImage.physicalSize.height)
let planeNode = SCNNode(geometry: plane)
planeNode.opacity = 0.25
/*
`SCNPlane` is vertically oriented in its local coordinate space, but
`ARImageAnchor` assumes the image is horizontal in its local space, so
rotate the plane to match.
*/
planeNode.eulerAngles.x = -.pi / 2
/*
Image anchors are not tracked after initial detection, so create an
animation that limits the duration for which the plane visualization appears.
*/
planeNode.runAction(self.imageHighlightAction)
// Add the plane visualization to the scene.
node.addChildNode(planeNode)
}
DispatchQueue.main.async {
let imageName = referenceImage.name ?? ""
self.statusViewController.cancelAllScheduledMessages()
self.statusViewController.showMessage("Detected image “\(imageName)”")
}
}
var imageHighlightAction: SCNAction {
return .sequence([
.wait(duration: 0.25),
.fadeOpacity(to: 0.85, duration: 0.25),
.fadeOpacity(to: 0.15, duration: 0.25),
.fadeOpacity(to: 0.85, duration: 0.25),
.fadeOut(duration: 0.5),
.removeFromParentNode()
])
}
}
解决问题的一种方法是创建 SKScene 并将其呈现为 SCNMaterial。
这是一个为您提供的完整注释示例，它使用了以下 ARSCNViewDelegate 方法：
//--------------------------
// MARK: - ARSCNViewDelegate
//--------------------------
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
//1. Check We Have An ARImageAnchor And Have Detected Our Reference Image
guard let imageAnchor = anchor as? ARImageAnchor else { return }
let referenceImage = imageAnchor.referenceImage
//2. Get The Physical Width & Height Of Our Reference Image
let width = CGFloat(referenceImage.physicalSize.width)
let height = CGFloat(referenceImage.physicalSize.height)
//3. Create An SKScene Which We Will Display Above Our Target
let overlayNode = SCNNode()
let spriteKitScene = SKScene(size: CGSize(width: 600, height: 300))
spriteKitScene.backgroundColor = .clear
let imageName = SKLabelNode(text: "Line Friends")
imageName.position = CGPoint(x: 600/2, y: 240)
imageName.horizontalAlignmentMode = .center
imageName.fontSize = 60
imageName.fontName = "San Fransisco"
spriteKitScene.addChild(imageName)
let artistName = SKLabelNode(text: "By Line Coorporation")
artistName.position = CGPoint(x: 600/2, y: 180)
artistName.horizontalAlignmentMode = .center
artistName.fontSize = 60
artistName.fontName = "San Fransisco"
spriteKitScene.addChild(artistName)
let creationDate = SKLabelNode(text: "Created 2011")
creationDate.position = CGPoint(x: 600/2, y: 120)
creationDate.horizontalAlignmentMode = .center
creationDate.fontSize = 60
creationDate.fontName = "San Fransisco"
spriteKitScene.addChild(creationDate)
let planeHeight = height/2
let overlayGeometry = SCNPlane(width: width, height: planeHeight)
overlayNode.geometry = overlayGeometry
//4. Add The SpriteKit Scene As The SCNPlane's Geometry
overlayGeometry.firstMaterial?.diffuse.contents = spriteKitScene
//5. Rotate The Material Contents So It Isn't Backwards
overlayGeometry.firstMaterial?.diffuse.contentsTransform = SCNMatrix4Translate(SCNMatrix4MakeScale(1, -1, 1), 0, 1, 0)
//6. Rotate The Node
overlayNode.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
//7. Place It About The Target
let zPosition = height - (planeHeight/2)
overlayNode.position = SCNVector3(0, 0, -zPosition)
//8. Add It To The Scene
node.addChildNode(overlayNode)
}
}
产生如下内容：
显然，如果您有多个图像目标，您将创建一个 func 来动态创建您的 'info' 覆盖...
希望它能为您指明正确的方向...并对 corporation 令人发指的拼写表示歉意！ ^_______*
在我工作的公司需要做这个申请。我必须识别一幅画的图像，并在识别后在 AR 中将其可视化（实际上我在 AR 中找到真实的图片和绘画上方）我将文本或具有相关图片的各种特征的可选点可视化。目前，我有这段 AR 代码可以识别有问题的图像，并且我在其上方可视化了一个计划。你能帮我用上面列出的功能在图片上方创建一个视图吗？
import ARKit
import SceneKit
import UIKit
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
@IBOutlet weak var blurView: UIVisualEffectView!
/// The view controller that displays the status and "restart experience" UI.
lazy var statusViewController: StatusViewController = {
return childViewControllers.lazy.compactMap({ [=10=] as? StatusViewController }).first!
}()
/// A serial queue for thread safety when modifying the SceneKit node graph.
let updateQueue = DispatchQueue(label: Bundle.main.bundleIdentifier! +
".serialSceneKitQueue")
/// Convenience accessor for the session owned by ARSCNView.
var session: ARSession {
return sceneView.session
}
// MARK: - View Controller Life Cycle
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
sceneView.session.delegate = self
// Hook up status view controller callback(s).
statusViewController.restartExperienceHandler = { [unowned self] in
self.restartExperience()
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// Prevent the screen from being dimmed to avoid interuppting the AR experience.
UIApplication.shared.isIdleTimerDisabled = true
// Start the AR experience
resetTracking()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
session.pause()
}
// MARK: - Session management (Image detection setup)
/// Prevents restarting the session while a restart is in progress.
var isRestartAvailable = true
/// Creates a new AR configuration to run on the `session`.
/// - Tag: ARReferenceImage-Loading
func resetTracking() {
guard let referenceImages = ARReferenceImage.referenceImages(inGroupNamed: "AR Resources", bundle: nil) else {
fatalError("Missing expected asset catalog resources.")
}
let configuration = ARWorldTrackingConfiguration()
configuration.detectionImages = referenceImages
session.run(configuration, options: [.resetTracking, .removeExistingAnchors])
statusViewController.scheduleMessage("Look around to detect images", inSeconds: 7.5, messageType: .contentPlacement)
}
// MARK: - ARSCNViewDelegate (Image detection results)
/// - Tag: ARImageAnchor-Visualizing
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
guard let imageAnchor = anchor as? ARImageAnchor else { return }
let referenceImage = imageAnchor.referenceImage
updateQueue.async {
// Create a plane to visualize the initial position of the detected image.
let plane = SCNPlane(width: referenceImage.physicalSize.width,
height: referenceImage.physicalSize.height)
let planeNode = SCNNode(geometry: plane)
planeNode.opacity = 0.25
/*
`SCNPlane` is vertically oriented in its local coordinate space, but
`ARImageAnchor` assumes the image is horizontal in its local space, so
rotate the plane to match.
*/
planeNode.eulerAngles.x = -.pi / 2
/*
Image anchors are not tracked after initial detection, so create an
animation that limits the duration for which the plane visualization appears.
*/
planeNode.runAction(self.imageHighlightAction)
// Add the plane visualization to the scene.
node.addChildNode(planeNode)
}
DispatchQueue.main.async {
let imageName = referenceImage.name ?? ""
self.statusViewController.cancelAllScheduledMessages()
self.statusViewController.showMessage("Detected image “\(imageName)”")
}
}
var imageHighlightAction: SCNAction {
return .sequence([
.wait(duration: 0.25),
.fadeOpacity(to: 0.85, duration: 0.25),
.fadeOpacity(to: 0.15, duration: 0.25),
.fadeOpacity(to: 0.85, duration: 0.25),
.fadeOut(duration: 0.5),
.removeFromParentNode()
])
}
}
解决问题的一种方法是创建 SKScene 并将其呈现为 SCNMaterial。
这是一个为您提供的完整注释示例，它使用了以下 ARSCNViewDelegate 方法：
//--------------------------
// MARK: - ARSCNViewDelegate
//--------------------------
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
//1. Check We Have An ARImageAnchor And Have Detected Our Reference Image
guard let imageAnchor = anchor as? ARImageAnchor else { return }
let referenceImage = imageAnchor.referenceImage
//2. Get The Physical Width & Height Of Our Reference Image
let width = CGFloat(referenceImage.physicalSize.width)
let height = CGFloat(referenceImage.physicalSize.height)
//3. Create An SKScene Which We Will Display Above Our Target
let overlayNode = SCNNode()
let spriteKitScene = SKScene(size: CGSize(width: 600, height: 300))
spriteKitScene.backgroundColor = .clear
let imageName = SKLabelNode(text: "Line Friends")
imageName.position = CGPoint(x: 600/2, y: 240)
imageName.horizontalAlignmentMode = .center
imageName.fontSize = 60
imageName.fontName = "San Fransisco"
spriteKitScene.addChild(imageName)
let artistName = SKLabelNode(text: "By Line Coorporation")
artistName.position = CGPoint(x: 600/2, y: 180)
artistName.horizontalAlignmentMode = .center
artistName.fontSize = 60
artistName.fontName = "San Fransisco"
spriteKitScene.addChild(artistName)
let creationDate = SKLabelNode(text: "Created 2011")
creationDate.position = CGPoint(x: 600/2, y: 120)
creationDate.horizontalAlignmentMode = .center
creationDate.fontSize = 60
creationDate.fontName = "San Fransisco"
spriteKitScene.addChild(creationDate)
let planeHeight = height/2
let overlayGeometry = SCNPlane(width: width, height: planeHeight)
overlayNode.geometry = overlayGeometry
//4. Add The SpriteKit Scene As The SCNPlane's Geometry
overlayGeometry.firstMaterial?.diffuse.contents = spriteKitScene
//5. Rotate The Material Contents So It Isn't Backwards
overlayGeometry.firstMaterial?.diffuse.contentsTransform = SCNMatrix4Translate(SCNMatrix4MakeScale(1, -1, 1), 0, 1, 0)
//6. Rotate The Node
overlayNode.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
//7. Place It About The Target
let zPosition = height - (planeHeight/2)
overlayNode.position = SCNVector3(0, 0, -zPosition)
//8. Add It To The Scene
node.addChildNode(overlayNode)
}
}
产生如下内容：
显然，如果您有多个图像目标，您将创建一个 func 来动态创建您的 'info' 覆盖...
希望它能为您指明正确的方向...并对 corporation 令人发指的拼写表示歉意！ ^_______*