I see a linear slow down as more trackers are added in the loop below. According to the WWDC video I was hoping that performAll run all these request in parallel, but apparently not for TrackObjectRequest.... #if DEBUG print("Frame processor: \(requests.count) tracking requests") var observationCount: Int = 0 let trackingStart = Date() #endif for await observation in handler.performAll(requests) { if case .trackObject(let request, let trackedBlock) = observation { #if DEBUG observationCount += 1 #endif guard let trackedBlock = trackedBlock, trackedBlock.confidence <= FrameProcessingThresholds.blockTrackedConfidenceThreshold else { // lost track of the block, remove the tracker blockTrackers.removeValue(forKey: request) continue } trackedBlocks[blockTrackers[request]!] = trackedBlock.boundingBox } } #if DEBUG print("Frame processor: \(observationCount) observations") print("Frame processor: tracker took \(Date().timeIntervalSince(trackingStart)) seconds") #endif

Hi there, I have a custom keypoint detection model and want to use it via vision's CoremlRequest API. Here's some complication for input and output: For input My model expect 512x512 a image. Which would be resized and padded from a 1920x1080 frame. I use the .scaleToFit option, but can I also specify the color used for padding? For output: My model output a CoreMLFeatureValueObservation, can I have it output in a format vision recognizes? such as joints/keypoints If my model is able to output in a format vision recognizes, would it take care to restoring the coordinates back to the original frame? (undo the padding) If not, how do I restore it from .scaletofit option? Best,

Hi there, I want to set the iphone camera to "S mode, or Shutter Priority" in camera terminology. Which is a semi-auto exposure model with shutter speed fixed, or set manually. However, when setting the shutter speed manually, it disables the auto exposure. So is there a way to keep the auto exposure on while restrict the shutter speed? Also, I would like to keep a low frame rate, e.g. 30 fps. Would I be able to set shutter speed independent of frame rate? Here's the code for setting up the camera Best,