I use VNDetectHumanBodyPoseRequest to detect body from an image which in xcode assets(I download from image website), But I get error below: 2021-12-24 21:50:19.945976+0800 Guess My Exercise[91308:4258893] [espresso] [Espresso::handle_ex_plan] exception=Espresso exception: "I/O error": Missing weights path cnn_human_pose.espresso.weights status=-2 Unable to perform the request: Error Domain=com.apple.vis Code=9 "Unable to setup request in VNDetectHumanBodyPoseRequest" UserInfo={NSLocalizedDescription=Unable to setup request in VNDetectHumanBodyPoseRequest}. Below is my codes: let image = UIImage(named: "image2") guard let cgImage = image?.cgImage else{return} let requestHandler = VNImageRequestHandler(cgImage: cgImage) let request = VNDetectHumanBodyPoseRequest(completionHandler: bodyPoseHandler) do { // Perform the body pose-detection request. try requestHandler.perform([request]) } catch { print("Unable to perform the request: \(error).") } func bodyPoseHandler(request: VNRequest, error: Error?) { guard let observations = request.results as? [VNHumanBodyPoseObservation] else { return } let poses = Pose.fromObservations(observations) self.drawPoses(poses, onto: self.simage!) // Process each observation to find the recognized body pose points. }

I haven't be able to generate a HEIC photo with IPTC metadata, in JPEG I get it but no in HEIC. I'm using: CIContext method heifRepresentation(of: image, format: CIFormat.RGBA8, colorSpace: colorSpace, options: options) to generate the photo data, image is a CIImage and has the IPTC metadata but the final photo doesn't have it. If I use: CIContext method jpegRepresentation(of: image, colorSpace: ColorSpace.deviceRGB, options: options) the final JPG photo has the IPTC information. Anyone with the same issue or with an idea about what's going on?

Previews of colors disappeared after xcode 13.1 update. Preview works when set as variable. but the previews directly in the code are no longer visible. What can I do to see color previews? Version 13.1 (13A1030d)

Question What may cause this crash above iOS 14 or 15 Here are images about crash stack tree below:

If I enlarge up the Image 8x with pinch out gesture, there is a phenomenon that displaying area of the subimage and the touchable area of the sub image is not matched I think it looks like the touchable area has been moved from the image area to the top left by 20dp. Please guide me on how to exactly match the displayed area and the touched area of the subimage on the ImageView I set the autoresizesSubViews property of ImageView to true, and Subimages were scaled with CATransform3DMakeScale when pinched out.

Hello, I am trying to create an animated sequence of HEIC images but I cannot save the frame property duration. It seems this is a well know bug: https://github.com/SDWebImage/SDWebImage/issues/3120 The kCGImagePropertyHEICSDictionary is never saved. Here's a sample project to reproduce the bug: ImageIOHEICSEncodeDecodeBug.zip Has anybody managed to save this information in a HEIC sequence? Thanks! Here's how I am writing an reading the image sequence - (void)testHEICSBug {     // First, load an animated image (GIF)     // And you can change the type into png, which is an animated PNG format. Same result     NSData *GIFData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"image1" ofType:@"gif"]];     CGImageSourceRef source = CGImageSourceCreateWithData((__bridge CFDataRef)GIFData, nil);     NSUInteger frameCount = CGImageSourceGetCount(source);     NSAssert(frameCount > 1, @"GIF frame count > 1");          // Split into frames array, encode to HEICS     NSMutableData *heicsData = [NSMutableData data];     CGImageDestinationRef destination = CGImageDestinationCreateWithData((__bridge CFMutableDataRef)heicsData, (__bridge CFStringRef)AVFileTypeHEIC, frameCount, nil);               for (int i = 0; i < frameCount; i++) {         // First get the GIF input image and duration         CGImageRef cgImage = CGImageSourceCreateImageAtIndex(source, i, nil);         NSDictionary *inputProperties = (__bridge_transfer  NSDictionary *)CGImageSourceCopyPropertiesAtIndex(source, i, nil);         NSDictionary *inputDictionary = inputProperties[(__bridge NSString *)kCGImagePropertyGIFDictionary];         NSTimeInterval duration = [inputDictionary[(__bridge NSString *)kCGImagePropertyGIFUnclampedDelayTime] doubleValue];         NSAssert(cgImage, @"CGImage not nil");         NSAssert(duration > 0, @"Input duration > 0");                                    // Then, encode into HEICS animated image         NSMutableDictionary *outputDProperties = [NSMutableDictionary dictionary];         outputDProperties[(__bridge NSString *)kCGImagePropertyHEICSDictionary] = @{(__bridge NSString *)kCGImagePropertyHEICSUnclampedDelayTime : @(duration)};         CGImageDestinationAddImage(destination, cgImage, (__bridge_retained CFDictionaryRef)outputDProperties);     }          // Output HEICS image data     BOOL result = CGImageDestinationFinalize(destination);     NSAssert(result, @"Encode HEICS failed");               // Next, try to use ImageIO to decode HEICS and check duration          CGImageSourceRef newSource = CGImageSourceCreateWithData((__bridge CFDataRef)heicsData, nil);     frameCount = CGImageSourceGetCount(newSource);     NSAssert(frameCount > 1, @"New HEICS should be aniamted image");     NSUInteger frameIndex = 1; // I pick the 2nd frame, actually any frame contains this issue.     NSDictionary *newProperties = (__bridge_transfer NSDictionary *)CGImageSourceCopyPropertiesAtIndex(newSource, frameIndex, nil);     NSDictionary *newDictionary = newProperties[(__bridge NSString *)kCGImagePropertyHEICSDictionary];     NSTimeInterval newDuration = [newDictionary[(__bridge NSString *)kCGImagePropertyHEICSUnclampedDelayTime] doubleValue];     CGImageRef newImage = CGImageSourceCreateImageAtIndex(newSource, frameIndex, nil);          // Now, check the HEICS frame duration, however, it's nil :(     // Only image is kept.     NSAssert(newImage, @"frame image is not nil");     NSAssert(newDuration > 0, @"Decode the HEICS (which encoded from GIF) will loss the frame duration"); }

I am trying to set the description of an image. The metadata tag necessary to add the description is of type alternateText. I create the child tag with the new description value: let childTag = CGImageMetadataTagCreate(identifier.section.namespace, identifier.section.prefix, "[x-default]" as CFString, .string, value as CFTypeRef) I then set the description tag like this: let parentTag = CGImageMetadataTagCreate(identifier.section.namespace, identifier.section.prefix, identifier.tagKey, .alternateText, [childTag] as CFTypeRef) let result = CGImageMetadataSetTagWithPath(metadata, nil, identifier.tagKey, parentTag) However, when I write the image file, I get a runtime error message and the operation fails: XMP Error: AltText array items must have an xml:lang qualifier So, I create the qualifier tag like this: let qualifierTag = CGImageMetadataTagCreate("http://www.w3.org/XML/1998/namespace" as CFString, "xml" as CFString, "lang" as CFString, .string, "x-default" as CFTypeRef) But I have not found a way to associate this qualifier tag to the child tag with the description value. What is the way to do it?

The memory used jumps to 498 megs when image is loaded but not displayed and drops to 242 megs when viewcontroller is dropped with nav controllers back button. UIImage(contentsOfFile: is not supposed to cache, i assume that is where the 240 meg drop is from, but why is half of memory used, 240 megs, being retained? func  save_ImageJPG() -> Bool {         // load tif from app folder image approx 8000 x 6000 pixels         let s  = currentMap_Name.replacingOccurrences(of: " ", with: "%20")         let filePath = getDocumentsDirectory().appendingPathComponent("Folder" ).appendingPathComponent(s)         let image = UIImage(contentsOfFile: filePath.path)         // change file type to jpg         let f = URL(string: s)?.deletingPathExtension().absoluteString         let e = URL(string: f! + ".jpg")?.absoluteString         let path = getDocumentsDirectory().appendingPathComponent("TempFolder"         ).appendingPathComponent(e!)         if !FileManager.default.fileExists(atPath: path.path) {             let jpgData = (image!.jpegData(compressionQuality: 1.0)!)             try? jpgData.write(to: path)             return true         }             return false     } or is the let jpgData = (image!.jpegData(compressionQuality: 1.0)!) retaining memory?

1) Portrait Image imported from files app is in landscape. How to fix this bug. a) Image saved from iPad 11 Pro front camera. b) saved image c) Image thumbnail in files app import window d) Image imported in landscape mode 2) This landscape image is fixed using below extension. But the output image obtained is slightly different for iOS 15 when compared with iOS 14. How to fix both issue?

Image captured using iPad 11 Pro in Portrait mode when imported using Document Picker from files app is loaded in landscape mode when seen in preview while debugging. While thumbnail of saved image is in Portrait mode in files app.

I use ImageI/O call - CGImageDestinationCopyImageSource() to update image metadata and noticed it's failing on updating existing metadata fields since macOS 12 beta 5, and upgrading to beta 6 is not fixing it. MacOS 11 and below don't have this issue. Do you plan to fix it in coming betas and when? Precondition: have a file that has any IPTC. For example, IPTC Title = "Old". Steps: Update the metadata (e.g. change IPTC Title to "New") with following code: NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:(id)metadataToApply,kCGImageDestinationMetadata, kCFBooleanTrue,kCGImageDestinationMergeMetadata, nil]; CFErrorRef metaError = NULL; BOOL isSuccess = CGImageDestinationCopyImageSource(idst, srf, (__bridge CFDictionaryRef)options, &metaError); Observe： At file level, silently fails, IPTC Title = "Old".

Hi, I'm trying to convert images picked from the users camera roll into jpegData for me to upload to a server. I'm doing the following to covert to Data: let imageData: Data? = uiImage.jpegData(compressionQuality: 0) This works fine when converting screenshots. But when I attempt to convert an image taken using the device's camera. It gives me the following error: [Metal] 9072 by 12198 iosurface is too large for GPU It still converts it into data, but the data then just contains a blank image. Not the selected image. I'm at a loss with where to go with this one, I've tried converting HEIC preloaded onto the device's bundle and it works fine. But when using ones selected from the camera roll, I get the stated error. Any help would be appreciated. This is the sample code I'm using to test the issue. (I'm aware it's quite pointless in this form) func convertImage(image: Image?) -> Image? { //1 let key = "\(String.random(length: 15))" let uiImage: UIImage = image.asUIImage() let imageData: Data? = uiImage.jpegData(compressionQuality: 0) guard let imageData = imageData else { return nil } let encodedImage = imageData.base64EncodedString() let fileManager = FileManager.default let documentsPath = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first let localImageUrl = (documentsPath?.appendingPathComponent(key)) guard let localImageUrl = localImageUrl else { return nil } try! encodedImage.write(to: localImageUrl, atomically: true, encoding: String.Encoding.utf8) guard let fileContents = try? String(contentsOf: localImageUrl) else { return nil } let dataDecoded : Data = Data(base64Encoded: fileContents, options: .ignoreUnknownCharacters)! let decodedimage = UIImage(data: dataDecoded) return (Image(uiImage: decodedimage ?? UIImage(named: "placeholder")!)) } import SwiftUI struct UploadTesting: View { @ObservedObject var crViewModel = ChatroomsViewModel() @State var showImagePicker = false @State var selectedImage: Image? = nil @State var convertedImage: Image? var body: some View { VStack { Button("Select") { showImagePicker.toggle() } selectedImage?.resizable().scaledToFit().frame(width: 300, height: 300) Button("Convert") { convertedImage = crViewModel.convertImage(image: selectedImage) } convertedImage?.resizable().scaledToFit().frame(width: 200, height: 200).background(Color.red) } .sheet(isPresented: $showImagePicker) { ImagePicker(image: $selectedImage) } } } Video of issue: https://streamable.com/h0uqly

I'm going insane over this, I'm using Xcode 13 beta 6 on the M1 MacBook Air. Every time I pick an image, I receive this error message. At this point I don't know what I can do because the message is so vague. Please help me.     @Binding var image: UIImage          func makeUIViewController(context: Context) -> UIImagePickerController {         let imagePicker = UIImagePickerController()         imagePicker.delegate = context.coordinator         return imagePicker     }          func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) {              }          func makeCoordinator() -> Coordinator {         Coordinator(parent: self)     }          final class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {                   var parent: PhotoPicker                  init(parent: PhotoPicker){             self.parent = parent         }                  func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {             if let image = info[.originalImage] as? UIImage {                 parent.image = image             }else{                              }             picker.dismiss(animated: true, completion: nil)         }     } }          @State private var isPresented: Bool = false     @State private var avatarImage = UIImage(systemName: "person") ?? UIImage()          var body: some View {         VStack {             Image(uiImage: avatarImage)                 .resizable()                 .scaledToFill()                 .frame(width: 150, height: 150)                 .clipShape(Circle())                 .padding()                 .onTapGesture {                     isPresented = true                 }                          Spacer()         }         .navigationTitle("Profile")         .sheet(isPresented: $isPresented) {             PhotoPicker(image: $avatarImage)         }     } }

In my Singleton Class，I used [UIImage imageNamed:] in the block of dispatch_once，it sometimes crash，I have thought many days，my image is stored in my App（Not in Assets，In My custom Resource File），it's unbelievable，who can tell me why? This is my Code     static dispatch_once_t onceToken;     static AClass *manager = nil;     dispatch_once(&onceToken, ^{         manager = [[AClass alloc] init];         dispatch_async(dispatch_get_global_queue(0, 0), ^{             NSMutableArray * imgDataList = [NSMutableArray array];             for (int i=0; i<=15; i++) {                 NSString *imageName=[NSString stringWithFormat:@"imageNamedxx_%d@2x.png",i];                 UIImage * img = [UIImage imageNamed:imageName]; if (img) { [imgDataList addObject:img]; }                             }             dispatch_async(dispatch_get_main_queue(), ^{                 manager.liveImgData = [imgDataList copy];             });         });     });     return manager; } 1 libobjc.A.dylib  objc_exception_throw  2 CoreFoundation  -[CFPrefsSearchListSource addManagedSourceForIdentifier:user:]  3 Foundation  -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:]  4 UIKitCore  -[_UIImageCGImageContent initWithCGImage:scale:]  5 UIKitCore  -[CUINamedImage(UIKitAdditions) UIImageWithAsset:configuration:flippedHorizontally:optionalVectorImage:]  6 UIKitCore  -[UIImageAsset imageWithConfiguration:]  7 UIKitCore  -[_UIPathLazyImageAsset imageWithConfiguration:]  8 UIKitCore  +[UIImage imageNamed:inBundle:withConfiguration:] myApp AClass - 第 42 行（[UIImage imageNamed:]） __34+[AClass shareInstance]_block_invoke_2 + 42