func detectObjects() async {
   let imageURL = Bundle.main.url(forResource: "picturedesk", withExtension: "png")
   if let imageURL = imageURL {
      do {
         let request = GenerateObjectnessBasedSaliencyImageRequest()
         observations = try await request.perform(on: imageURL)
      } catch {
         print("Error performing the request: \(error)")
      }
   }
}