I'm training an activity classifier with CreateML and when I add samples to the Preview tab, the length of the sample it displays does not match its actual length.
I have set prediction window size to 15 and sample rate to 10. The activity is roughly 1.5 seconds.
When I put a 1.49 second sample into preview, it says it is 00:00.06 seconds:
and when I put a 12.91 second sample into preview, it says it is 00:00.52 seconds:
Here is the code I am using to print out sensor data in csv format:
if motionManager.isDeviceMotionAvailable {
motionManager.deviceMotionUpdateInterval = 0.1
motionManager.startDeviceMotionUpdates(to: .main) { data, error in
guard let data = data, let startTime = self.startTime else { return }
let timestamp = Date().timeIntervalSince(startTime)
let xAcc = data.userAcceleration.x
let yAcc = data.userAcceleration.y
let zAcc = data.userAcceleration.z
let xRotRate = data.rotationRate.x
let yRotRate = data.rotationRate.y
let zRotRate = data.rotationRate.z
let roll = data.attitude.roll
let pitch = data.attitude.pitch
let yaw = data.attitude.yaw
let row = "\(timestamp),\(xAcc),\(yAcc),\(zAcc),\(xRotRate),\(yRotRate),\(zRotRate),\(roll),\(pitch),\(yaw)"
print(row)
}
}
And here is the data for the 1.49 second sample mentioned above:
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Hey, i just created and trained an MLImageClassifier via the MLImageclassifier.train() method (https://developer.apple.com/documentation/createml/mlimageclassifier/train(trainingdata:parameters:sessionparameters:))
For my Trainingdata (MLImageclassifier.DataSource) i am using my directoy structure, so i got an images folder with subfolders of person1, person2, person3 etc. which contain images of the labeled persons (https://developer.apple.com/documentation/createml/mlimageclassifier/datasource/labeleddirectories(at:))
I am saving the checkpoints and sessions in my appdirectory, so i can create an MLIMageClassifier from an exisiting MLSession and/or MLCheckpoint.
My question is: is there any way to add new labels, optimally from my directoy strucutre, to an MLImageClassifier which i create from an existing MLCheckpoint/MLSession?
So like adding a person4 and training my pretrained Classifier with only that person4.
Or is it simply not possible and i have to train from the beginning everytime i want to add a new label?
Unfortunately i cannot find anything in the API.
Thanks!
Hey,
im training an MLImageClassifier via the train()-method:
guard let job = try? MLImageClassifier.train(trainingData: trainingData, parameters: modelParameter, sessionParameters: sessionParameters) else{
debugPrint("Training failed")
return
}
Unfortunately the metrics of my MLProgress, which is created from the returning MLJob while training are empty.
Code for listening on Progress:
job.progress.publisher(for: \.fractionCompleted)
.sink{[weak job] fractionCompleted in
guard let job = job else {
debugPrint("failure in creating job")
return
}
guard let progress = MLProgress(progress: job.progress) else {
debugPrint("failure in creating progress")
return
}
print("ProgressPROGRESS: \(progress)")
print("Progress: \(fractionCompleted)")
}
.store(in: &subscriptions)
Printing the Progress ends in:
MLProgress(elapsedTime: 2.2328420877456665, phase: CreateML.MLPhase.extractingFeatures, itemCount: 32, totalItemCount: Optional(39), metrics: [:])
Got the Same result when listening to MLCheckpoints, Metrics are empty aswell:
MLCheckpoint(url: URLPATH.checkpoint, phase: CreateML.MLPhase.extractingFeatures, iteration: 32, date: 2024-04-18 11:21:18 +0000, metrics: [:])
Can some1 tell me how I can access the metrics while training?
Thanks!
I'm using Filemaker, with Monkey Bread Software plugin's CoreML features, to find that it can only write to .mlmodelc.
Are these (.mlmodel = .mlmodelc) the same? If not, how do you generate a .mlmodelc using XCode.
Please let me know, thanks.
For example: we use DocKit for birdwatching, so we have an unknown field distance and direction.
Distance = ?
Direction = ?
For example, the rock from which the observation is made. The task is to recognize the number of birds caught in the frame, add a detection frame and collect statistics.
Question:
What is the maximum number of frames processed with custom object recognition?
If not enough, can I do the calculations myself and transfer to DokKit for fast movement?
Hi everyone, is it possible to use a 3D USDZ file to train a model in Create ML, I see there is an image option but it would be good to use these files from Reality Composer from object capture? Or is this in the works for forthcoming Xcode updates? Many Thanks Stuart
Note: I posted this to the feedback assistant but haven't gotten a response for 3months =( FB13482199
I am trying to train a large image classifier. I have a training run for ~300000 images. Each image has a folder and the file names within the folders are somewhat random. 381 classes. I am on an M2 Pro, Sonoma 14.0 running CreateML Version 5.0 (121.1). I would prefer not to pursue the pytorch/HF -> coremltools route.
CreateML seems to consistently crash ~25000-30000 images in during the feature extraction phase with "Unexpected Error". It does not seem to be due to an out of memory issue. I am looking for some guidance since it seems impossible to debug why this is consistently crashing.
My initial assumption was that it could be due to blank/corrupt files. I do not think that is the case. I also checked if there were any special characters in the data/folders. I wasn't able to go through all, but did try some programatic regex. Don't think this is the case either.
I attached the sysdiagnose results in feedback assistant after the crash happened. I did notice when going into /var/logs there was some write issue saying that Mac had written too much to disk. Note: I also tried Xcode 15.2-beta this time and the associated CoreML version.
My questions:
How can I fix this?
How should I go about debugging CreateML errors in the future?
'Unexpected Error' - where can I go about getting the exact createml logs on my device? This is far too broad of an error statement
Please let me know. As a note, I did successfully train a past model on ~100000 images. I am planning to 10-15x that if this run is successful. Please help, spent a lot of time gathering the extra data and to date have been an occasional power user of createml. Haven't heard back from Apple since December =/. I assume I'm not the only one with this problem, so looking for any instructions to hands on debug and help others. Thx!
Context
So basically I've trained my model for object detection with +4k images. Under preview I'm able to check the prediction for Image "A" which detects two labels with 100% and its Bounding Boxes look accurate.
The problem itself
However, inside the Swift Playground, when I try to perform object detection using the same model and same Image I don't get same results.
What I expected
Is that after performing the request and processing the array of VNRecognizedObjectObservation would show the very same results that appear in CreateML Preview.
Notes:
So the way I'm importing the model into playground is just by drag and drop.
I've trained the images using JPEG format.
The test Image is rotated so that it looks vertical using MacOS Finder rotation tool.
I've tried, while creating VNImageRequestHandlerto pass a different orientation, with the same result.
Swift Playground code
This is the code I'm using.
import UIKit
import Vision
do{
let model = try MYMODEL_FROMCREATEML(configuration: MLModelConfiguration())
let mlModel = model.model
let coreMLModel = try VNCoreMLModel(for: mlModel)
let request = VNCoreMLRequest(model: coreMLModel) { request, error in
guard let results = request.results as? [VNRecognizedObjectObservation] else {
return
}
results.forEach { result in
print(result.labels)
print(result.boundingBox)
}
}
let image = UIImage(named: "TEST_IMAGE.HEIC")!
let requestHandler = VNImageRequestHandler(cgImage: image.cgImage!)
try requestHandler.perform([request])
} catch {
print(error)
}
Additional Notes & Uncertainties
Not sure if this is relevant, but just in case: I've trained the model using pictures I took from my iPhone using 48MP HEIC format. All photos were on vertical position. With a python script I overwrote the EXIF orientation to 1 (Normal). This was in order to be able to annotate the images using the CVAT tool and then convert to CreateML annotation format.
Assumption #1
Since I've read that Object Detection in Create ML is based on YOLOv3 architecture which inside the first layer resizes the image dimension, meaning that I don't have to worry about using very large images to train my model. Is this correct?
Assumption #2
Also makes me asume that the same thing happens when I try to make a prediction?
Hello I am making a rock paper scissors game using object detection with a model I made using create ml and a dataset I found online. The trained model works and I tried to implement it into Xcode but when I run my app I get this error
This neural network model does not have a parameter for requested key 'precisionRecallCurves'. Note: only updatable neural network models can provide parameter values and these values are only accessible in the context of an MLUpdateTask completion or progress handler.
I am still new to create ml and I cannot seem to find anything about making my model updatable in create ml.
How do I add a already made CoreML model into my playground? I tried what people recommended online -- building a test project and get the .mlmodelc file and put that in the playground along with the autogenerated class for the model. However, I keep on getting so many errors.
The errors:
Unexpected duplicate tasks
Target 'help' (project 'help') has write command with output /Users/cpulipaka/Library/Developer/Xcode/DerivedData/help-appuguzbduqvojfwkaxtnqkozecv/Build/Intermediates.noindex/Previews/help/Intermediates.noindex/help.build/Debug-iphonesimulator/help.build/adc7818afdf4ae03fd98cdd618954541.sb
Target 'help' (project 'help') has write command with output /Users/cpulipaka/Library/Developer/Xcode/DerivedData/help-appuguzbduqvojfwkaxtnqkozecv/Build/Intermediates.noindex/Previews/help/Intermediates.noindex/help.build/Debug-iphonesimulator/help.build/adc7818afdf4ae03fd98cdd618954541.sb
Unexpected duplicate tasks
Showing Recent Issues
Target 'help' (project 'help'): CoreMLModelCompile /Users/cpulipaka/Library/Developer/Xcode/DerivedData/help-appuguzbduqvojfwkaxtnqkozecv/Build/Intermediates.noindex/Previews/help/Products/Debug-iphonesimulator/help.app/ /Users/cpulipaka/Desktop/help.swiftpm/Resources/ZooClassifier.mlmodel
Target 'help' (project 'help'): CoreMLModelCompile /Users/cpulipaka/Library/Developer/Xcode/DerivedData/help-appuguzbduqvojfwkaxtnqkozecv/Build/Intermediates.noindex/Previews/help/Products/Debug-iphonesimulator/help.app/ /Users/cpulipaka/Desktop/help.swiftpm/Resources/ZooClassifier.mlmodel
ZooClassifier.mlmodel: No predominant language detected. Set COREML_CODEGEN_LANGUAGE to preferred language.
Is 30x30 the maximum grid size on Create ML App?
The input allows me to set any number higher than that, but on starting training, the number falls back to 30x30.
Is that a limitation or a bug in the app?
Where can I find CreateML logs? I'd like to inspect log lines if they exist to diagnose what kind of error the app encounters when I provide it training data for a multi-label image classifier and the UI displays "Data Analysis stopped".
I do see some crash reports for "MLRecipeExecutionService" in the Console app which seem related, but I haven't spotted anything useful there yet.
In theory, sending signals from iPhone apps to and from the brain with non-invasive technology could be achieved through a combination of brain-computer interface (BCI) technologies, machine learning algorithms, and mobile app development.
Brain-Computer Interface (BCI): BCI technology can be used to record brain signals and translate them into commands that can be understood by a computer or a mobile device. Non-invasive BCIs, such as electroencephalography (EEG), can track brain activity using sensors placed on or near the head[6]. For instance, a portable, non-invasive, mind-reading AI developed by UTS uses an AI model called DeWave to translate EEG signals into words and sentences[3].
Machine Learning Algorithms: Machine learning algorithms can be used to analyze and interpret the brain signals recorded by the BCI. These algorithms can learn from large quantities of EEG data to translate brain signals into specific commands[3].
Mobile App Development: A mobile app can be developed to receive these commands and perform specific actions on the iPhone. The app could also potentially send signals back to the brain using technologies like transcranial magnetic stimulation (TMS), which can deliver information to the brain[5].
However, it's important to note that while this technology is theoretically possible, it's still in the early stages of development and faces significant technical and ethical challenges. Current non-invasive BCIs do not have the same level of fidelity as invasive devices, and the practical application of these systems is still limited[1][3]. Furthermore, ethical considerations around privacy, consent, and the potential for misuse of this technology must also be addressed[13].
Sources
[1] You can now use your iPhone with your brain after a major breakthrough | Semafor https://www.semafor.com/article/11/01/2022/you-can-now-use-your-iphone-with-your-brain
[2] ! Are You A Robot? https://www.sciencedirect.com/science/article/pii/S1110866515000237
[3] Portable, non-invasive, mind-reading AI turns thoughts into text https://techxplore.com/news/2023-12-portable-non-invasive-mind-reading-ai-thoughts.html
[4] Elon Musk's Neuralink implants brain chip in first human https://www.reuters.com/technology/neuralink-implants-brain-chip-first-human-musk-says-2024-01-29/
[5] BrainNet: A Multi-Person Brain-to-Brain Interface for Direct Collaboration Between Brains - Scientific Reports https://www.nature.com/articles/s41598-019-41895-7
[6] Brain-computer interfaces and the future of user engagement https://www.fastcompany.com/90802262/brain-computer-interfaces-and-the-future-of-user-engagement
[7] Mobile App + Wearable For Neurostimulation - Accion Labs https://www.accionlabs.com/mobile-app-wearable-for-neurostimulation
[8] Signal Generation, Acquisition, and Processing in Brain Machine Interfaces: A Unified Review https://www.frontiersin.org/articles/10.3389/fnins.2021.728178/full
[9] Mind-reading technology has arrived https://www.vox.com/future-perfect/2023/5/4/23708162/neurotechnology-mind-reading-brain-neuralink-brain-computer-interface
[10] Synchron Brain Implant - Breakthrough Allows You to Control Your iPhone With Your Mind - Grit Daily News https://gritdaily.com/synchron-brain-implant-controls-tech-with-the-mind/
[11] Mind uploading - Wikipedia https://en.wikipedia.org/wiki/Mind_uploading
[12] BirgerMind - Express your thoughts loudly https://birgermind.com
[13] Elon Musk wants to merge humans with AI. How many brains will be damaged along the way? https://www.vox.com/future-perfect/23899981/elon-musk-ai-neuralink-brain-computer-interface
[14] Models of communication and control for brain networks: distinctions, convergence, and future outlook https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7655113/
[15] Mind Control for the Masses—No Implant Needed https://www.wired.com/story/nextmind-noninvasive-brain-computer-interface/
[16] Elon Musk unveils Neuralink’s plans for brain-reading ‘threads’ and a robot to insert them https://www.theverge.com/2019/7/16/20697123/elon-musk-neuralink-brain-reading-thread-robot
[17] Essa and Kotte https://arxiv.org/pdf/2201.04229.pdf
[18] Synchron's Brain Implant Breakthrough Lets Users Control iPhones And iPads With Their Mind https://hothardware.com/news/brain-implant-breakthrough-lets-you-control-ipad-with-your-mind
[19] An Apple Watch for Your Brain https://www.thedeload.com/p/an-apple-watch-for-your-brain
[20] Toward an information theoretical description of communication in brain networks https://direct.mit.edu/netn/article/5/3/646/97541/Toward-an-information-theoretical-description-of
[21] A soft, wearable brain–machine interface https://news.ycombinator.com/item?id=28447778
[22] Portable neurofeedback App https://www.psychosomatik.com/en/portable-neurofeedback-app/
[23] Intro to Brain Computer Interface http://learn.neurotechedu.com/introtobci/
I have trained a model to classify some symbols using Create ML.
In my app I am using VNImageRequestHandler and VNCoreMLRequest to classify image data.
If I use a CVPixelBuffer obtained from an AVCaptureSession then the classifier runs as I would expect. If I point it at the symbols it will work fairly accurately, so I know the model is trained fairly correctly and works in my app.
If I try to use a cgImage that is obtained by cropping a section out of a larger image (from the gallery), then the classifier does not work. It always seems to return the same result (although the confidence is not a 1.0 and varies for each image, it will be to within several decimal points of it, eg 9.9999).
If I pause the app when I have the cropped image and use the debugger to obtain the cropped image (via the little eye icon and then open in preview), then drop the image into the Preview section of the MLModel file or in Create ML, the model correctly classifies the image.
If I scale the cropped image to be the same size as I get from my camera, and convert the cgImage to a CVPixelBuffer with same size and colour space to be the same as the camera (1504, 1128, kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange) then I get some difference in ouput, it's not accurate, but it returns different results if I specify the 'centerCrop' or 'scaleFit' options. So I know that 'something' is happening, but it's not the correct thing.
I was under the impression that passing a cgImage to the VNImageRequestHandler would perform the necessary conversions, but experimentation shows this is not the case. However, when using the preview tool on the model or in Create ML this conversion is obviously being done behind the scenes because the cropped part is being detected.
What am I doing wrong.
tl;dr
my model works, as backed up by using video input directly and also dropping cropped images into preview sections
passing the cropped images directly to the VNImageRequestHandler does not work
modifying the cropped images can produce different results, but I cannot see what I should be doing to get reliable results.
I'd like my app to behave the same way the preview part behaves, I give it a cropped part of an image, it does some processing, it goes to the classifier, it returns a result same as in Create ML.
After training my dataset, the training, validation, and testing sets all show 0% in detection accuracy and all my test photos show false negative. The dataset has 1032 photos and 2 classes, and I used Roboflow for the image annotation. For network, I choose full network. If there is any way to fix this?
I created a Hand Pose model using CreateML and integrated it into my SwiftUI project app.
While coding, I referred to the Apple Developer documentation app for the necessary code.
However, when I ran the app on an iPhone 14,
the camera didn't display any effects or finger numbers as expected.
note: I've already tested the ML model separately, and it works fine.
the code:
import CoreML
import SceneKit
import SwiftUI
import Vision
import ARKit
struct ARViewContainer: UIViewControllerRepresentable {
let arViewController: ARViewController
let model: modelHand
func makeUIViewController(context: UIViewControllerRepresentableContext<ARViewContainer>) -> ARViewController {
arViewController.model = model
return arViewController
}
func updateUIViewController(_ uiViewController: ARViewController, context: UIViewControllerRepresentableContext<ARViewContainer>) {
// Update the view controller if needed
}
}
class ARViewController: UIViewController, ARSessionDelegate {
var frameCounter = 0
let handPosePredictionInterval = 10
var model: modelHand!
var effectNode: SCNNode?
override func viewDidLoad() {
super.viewDidLoad()
let arView = ARSCNView(frame: view.bounds)
view.addSubview(arView)
let session = ARSession()
session.delegate = self
let configuration = ARWorldTrackingConfiguration()
configuration.frameSemantics = .personSegmentationWithDepth
arView.session.run(configuration)
}
func session(_ session: ARSession, didUpdate frame: ARFrame) {
let pixelBuffer = frame.capturedImage
let handPoseRequest = VNDetectHumanHandPoseRequest()
handPoseRequest.maximumHandCount = 1
handPoseRequest.revision = VNDetectHumanHandPoseRequestRevision1
let handler = VNImageRequestHandler(cvPixelBuffer: pixelBuffer, options: [:])
do {
try handler.perform([handPoseRequest])
} catch {
assertionFailure("Hand Pose Request failed: \(error)")
}
guard let handPoses = handPoseRequest.results, !handPoses.isEmpty else {
return
}
if frameCounter % handPosePredictionInterval == 0 {
if let handObservation = handPoses.first as? VNHumanHandPoseObservation {
do {
let keypointsMultiArray = try handObservation.keypointsMultiArray()
let handPosePrediction = try model.prediction(poses: keypointsMultiArray)
let confidence = handPosePrediction.labelProbabilities[handPosePrediction.label]!
print("Confidence: \(confidence)")
if confidence > 0.9 {
print("Rendering hand pose effect: \(handPosePrediction.label)")
renderHandPoseEffect(name: handPosePrediction.label)
}
} catch {
fatalError("Failed to perform hand pose prediction: \(error)")
}
}
}
}
func renderHandPoseEffect(name: String) {
switch name {
case "One":
print("Rendering effect for One")
if effectNode == nil {
effectNode = addParticleNode(for: "One")
}
default:
print("Removing all particle nodes")
removeAllParticleNode()
}
}
func removeAllParticleNode() {
effectNode?.removeFromParentNode()
effectNode = nil
}
func addParticleNode(for poseName: String) -> SCNNode {
print("Adding particle node for pose: \(poseName)")
let particleNode = SCNNode()
return particleNode
}
}
struct ContentView: View {
let model = modelHand()
var body: some View {
ARViewContainer(arViewController: ARViewController(), model: model)
}
}
#Preview {
ContentView()
}
Hello Apple Developer community,
I hope this message finds you well. I am currently facing an issue with Create ML in Xcode, and I am seeking assistance from the knowledgeable members of this forum. Any help or guidance would be greatly appreciated.
Problem Description:
I am encountering an unexpected issue when attempting to create a classification model for images using Create ML in Xcode. Upon opening Create ML, the application closes unexpectedly when I choose to create a new image classification model.
Steps I Have Taken:
I have already tried the following steps to troubleshoot the issue:
Updated Xcode and macOS to the latest versions.
Restarted Xcode and my computer.
Created a new sample project to isolate the issue.
Despite these efforts, the problem persists.
System Information:
Xcode Version: 15.2
macOS Version: Sonoma 14.0
I am on a tight deadline for a project, and resolving this issue quickly is crucial. Your help is invaluable, and I thank you in advance for any support you can provide.
Best regards.
I have been attempting to debug this for over 10 hours...
I am working on implementing Apple's MobileNetV2 CoreML model into a Swift Playgrounds. I performed the following steps
Compiled CoreML model in regular Xcode project
Moved Compiled CoreML (MobileNetV2.mlmodelc) model to Resources folder of Swift Playground
Copy Paste the model class (MobileNetV2.swift) into the Sources folder of Swift Playground
Use UIImage extensions to resize and convert UIImage into CVbuffer
Implement basic code to run the model.
However, every time I run this, it keeps giving me this error:
MobileNetV2.swift:100: Fatal error: Unexpectedly found nil while unwrapping an Optional value
From the automatically generated model class function:
/// URL of model assuming it was installed in the same bundle as this class
class var urlOfModelInThisBundle : URL {
let bundle = Bundle(for: self)
return bundle.url(forResource: "MobileNetV2", withExtension:"mlmodelc")!
}
The model builds perfectly, this is my contentView Code:
import SwiftUI
struct ContentView: View {
func test() -> String{
// 1. Load the image from the 'Resources' folder.
let newImage = UIImage(named: "img")
// 2. Resize the image to the required input dimension of the Core ML model
// Method from UIImage+Extension.swift
let newSize = CGSize(width: 224, height: 224)
guard let resizedImage = newImage?.resizeImageTo(size: newSize) else {
fatalError("⚠️ The image could not be found or resized.")
}
// 3. Convert the resized image to CVPixelBuffer as it is the required input
// type of the Core ML model. Method from UIImage+Extension.swift
guard let convertedImage = resizedImage.convertToBuffer() else {
fatalError("⚠️ The image could not be converted to CVPixelBugger")
}
// 1. Create the ML model instance from the model class in the 'Sources' folder
let mlModel = MobileNetV2()
// 2. Get the prediction output
guard let prediction = try? mlModel.prediction(image: convertedImage) else {
fatalError("⚠️ The model could not return a prediction")
}
// 3. Checking the results of the prediction
let mostLikelyImageCategory = prediction.classLabel
let probabilityOfEachCategory = prediction.classLabelProbs
var highestProbability: Double {
let probabilty = probabilityOfEachCategory[mostLikelyImageCategory] ?? 0.0
let roundedProbability = (probabilty * 100).rounded(.toNearestOrEven)
return roundedProbability
}
return("\(mostLikelyImageCategory): \(highestProbability)%")
}
var body: some View {
VStack {
let _ = print(test())
Image(systemName: "globe")
.imageScale(.large)
.foregroundColor(.accentColor)
Text("Hello, world!")
Image(uiImage: UIImage(named: "img")!)
}
}
}
Upon printing my bundle contents, I get these:
["_CodeSignature", "metadata.json", "__PlaceholderAppIcon76x76@2x~ipad.png", "Info.plist", "__PlaceholderAppIcon60x60@2x.png", "coremldata.bin", "{App Name}", "PkgInfo", "Assets.car", "embedded.mobileprovision"]
Anything would help 🙏
For additional reference, here are my UIImage extensions in ExtImage.swift:
//Huge thanks to @mprecke on github for these UIImage extension function.
import Foundation
import UIKit
extension UIImage {
func resizeImageTo(size: CGSize) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(size, false, 0.0)
self.draw(in: CGRect(origin: CGPoint.zero, size: size))
let resizedImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return resizedImage
}
func convertToBuffer() -> CVPixelBuffer? {
let attributes = [
kCVPixelBufferCGImageCompatibilityKey: kCFBooleanTrue,
kCVPixelBufferCGBitmapContextCompatibilityKey: kCFBooleanTrue
] as CFDictionary
var pixelBuffer: CVPixelBuffer?
let status = CVPixelBufferCreate(
kCFAllocatorDefault, Int(self.size.width),
Int(self.size.height),
kCVPixelFormatType_32ARGB,
attributes,
&pixelBuffer)
guard (status == kCVReturnSuccess) else {
return nil
}
CVPixelBufferLockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
let pixelData = CVPixelBufferGetBaseAddress(pixelBuffer!)
let rgbColorSpace = CGColorSpaceCreateDeviceRGB()
let context = CGContext(
data: pixelData,
width: Int(self.size.width),
height: Int(self.size.height),
bitsPerComponent: 8,
bytesPerRow: CVPixelBufferGetBytesPerRow(pixelBuffer!),
space: rgbColorSpace,
bitmapInfo: CGImageAlphaInfo.noneSkipFirst.rawValue)
context?.translateBy(x: 0, y: self.size.height)
context?.scaleBy(x: 1.0, y: -1.0)
UIGraphicsPushContext(context!)
self.draw(in: CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height))
UIGraphicsPopContext()
CVPixelBufferUnlockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
return pixelBuffer
}
}
I want to use it in the code
Hi,
In Xcode 14 I was able to train linear regression models with Create ML using large CSV files (I tested on about 30000 items and 5 features):
However, in Xcode 15 (I tested on 15.0.1 and 15.1), the training continuously stays in the "Processing" state:
When using a dataset with 900 items, everything works fine.
I filed a feedback for this issue: FB13516799.
Does anybody else have this issue / can reproduce it?