CGImagePropertyOrientation+UIImageOrientation.swift

import UIKit  
import ImageIO  
  
extension CGImagePropertyOrientation {  
    /** 
     Converts a `UIImageOrientation` to a corresponding 
     `CGImagePropertyOrientation`. The cases for each 
     orientation are represented by different raw values. 
      
     - Tag: ConvertOrientation 
     */  
    init(_ orientation: UIImageOrientation) {  
        switch orientation {  
        case .up: self = .up  
        case .upMirrored: self = .upMirrored  
        case .down: self = .down  
        case .downMirrored: self = .downMirrored  
        case .left: self = .left  
        case .leftMirrored: self = .leftMirrored  
        case .right: self = .right  
        case .rightMirrored: self = .rightMirrored  
        }  
    }  
}  

For newer version of SwiftUI, you should change this:
init(_ orientation: UIImageOrientation)
to this:
init(_ orientation: UIImage.Orientation)

Btw, thank you

I don't work with Swift anymore. Thanks for the update though.

https://developer.apple.com/documentation/imageio/cgimagepropertyorientation
Here is the official convert code.