iOS UIImagePickerController result image orientation after upload

Question

I am testing my iPhone application on an iOS 3 1 3 iPhone   I am selecting capturing an image using a UIImagePickerController   UIImagePickerController  imagePicker     UIImagePickerController alloc  init    imagePicker setSourceType UIImagePickerControllerSourceTypeCamera    imagePicker setDelegate self    self navigationController presentModalViewController imagePicker animated YES    imagePicker release      -  void imagePickerController  UIImagePickerController   picker didFinishPickingMediaWithInfo  NSDictionary   info       self image    info objectForKey UIImagePickerControllerOriginalImage       imageView image   self image       self navigationController dismissModalViewControllerAnimated YES       submitButton enabled   YES      I then at some point send it to my web server using the ASI classes   ASIFormDataRequest  request    ASIFormDataRequest requestWithURL  NSURL URLWithString   http   example com myscript php      request setDelegate self    request setStringEncoding NSUTF8StringEncoding    request setShouldContinueWhenAppEntersBackground YES     other post keys values  request setFile UIImageJPEGRepresentation self image  100 0f  withFileName  NSString stringWithFormat    d jpg     NSDate date  timeIntervalSinceNow   andContentType   image jpg  forKey   imageFile     request startAsynchronous     the problem  when i take a picture with the iphone while holding it landscape  the image gets uploaded to the server and it viewed like you would expect   when taking a picture holding the phone in portrait  the image is uploaded and viewed as it had been rotated 90 degrees   my application is set to only work in portrait modes upsidedown and regular    How can i make the image always show the correct orientation after uploading   the image appears to be correct as displayed in an UIImageView directly after taking the picture   but viewing on the server says otherwise

User · Answer

Solution for Swift 3 1 for orientation issue while capturing the image from Camera   I have updated the solution given by jake and Metal Heart  UIImage extension    MARK - Image Orientation fix  extension UIImage        func fixOrientation   - gt  UIImage               No-op if the orientation is already correct         if   self imageOrientation    UIImageOrientation up                 return self                        We need to calculate the proper transformation to make the image upright             We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored          var transform  CGAffineTransform   CGAffineTransform identity          if   self imageOrientation    UIImageOrientation down    self imageOrientation    UIImageOrientation downMirrored                 transform   transform translatedBy x  self size width  y  self size height              transform   transform rotated by  CGFloat Double pi                      if   self imageOrientation    UIImageOrientation left    self imageOrientation    UIImageOrientation leftMirrored                 transform   transform translatedBy x  self size width  y  0              transform   transform rotated by  CGFloat Double pi   2 0                      if   self imageOrientation    UIImageOrientation right    self imageOrientation    UIImageOrientation rightMirrored                 transform   transform translatedBy x  0  y  self size height               transform   transform rotated by  CGFloat -Double pi   2 0                       if   self imageOrientation    UIImageOrientation upMirrored    self imageOrientation    UIImageOrientation downMirrored                 transform   transform translatedBy x  self size width  y  0              transform   transform scaledBy x  -1  y  1                     if   self imageOrientation    UIImageOrientation leftMirrored    self imageOrientation    UIImageOrientation rightMirrored                 transform   transform translatedBy x  self size height  y  0               transform   transform scaledBy x  -1  y  1                         Now we draw the underlying CGImage into a new context  applying the transform            calculated above          let ctx  CGContext   CGContext data  nil  width  Int self size width   height  Int self size height                                                         bitsPerComponent  self cgImage  bitsPerComponent  bytesPerRow  0                                                        space  self cgImage  colorSpace                                                         bitmapInfo  self cgImage  bitmapInfo rawValue             ctx concatenate transform           if   self imageOrientation    UIImageOrientation left                self imageOrientation    UIImageOrientation leftMirrored                self imageOrientation    UIImageOrientation right                self imageOrientation    UIImageOrientation rightMirrored                 ctx draw self cgImage   in  CGRect x  0 y  0 width  self size height height  self size width             else               ctx draw self cgImage   in  CGRect x  0 y  0 width  self size width height  self size height                         And now we just create a new UIImage from the drawing context and return it         return UIImage cgImage  ctx makeImage               Swift 2 0    MARK - Image Orientation fix  extension UIImage        func fixOrientation   - gt  UIImage               No-op if the orientation is already correct         if   self imageOrientation    UIImageOrientation Up                 return self                        We need to calculate the proper transformation to make the image upright             We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored          var transform  CGAffineTransform   CGAffineTransformIdentity          if   self imageOrientation    UIImageOrientation Down    self imageOrientation    UIImageOrientation DownMirrored                 transform   CGAffineTransformTranslate transform  self size width  self size height              transform   CGAffineTransformRotate transform  CGFloat M PI                      if   self imageOrientation    UIImageOrientation Left    self imageOrientation    UIImageOrientation LeftMirrored                 transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformRotate transform  CGFloat M PI 2                      if   self imageOrientation    UIImageOrientation Right    self imageOrientation    UIImageOrientation RightMirrored                 transform   CGAffineTransformTranslate transform  0  self size height               transform   CGAffineTransformRotate transform   CGFloat -M PI 2                       if   self imageOrientation    UIImageOrientation UpMirrored    self imageOrientation    UIImageOrientation DownMirrored                 transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformScale transform  -1  1                     if   self imageOrientation    UIImageOrientation LeftMirrored    self imageOrientation    UIImageOrientation RightMirrored                 transform   CGAffineTransformTranslate transform  self size height  0               transform   CGAffineTransformScale transform  -1  1                         Now we draw the underlying CGImage into a new context  applying the transform            calculated above          let ctx  CGContextRef   CGBitmapContextCreate nil  Int self size width   Int self size height               CGImageGetBitsPerComponent self CGImage   0              CGImageGetColorSpace self CGImage               CGImageGetBitmapInfo self CGImage  rawValue             CGContextConcatCTM ctx  transform           if   self imageOrientation    UIImageOrientation Left                self imageOrientation    UIImageOrientation LeftMirrored                self imageOrientation    UIImageOrientation Right                self imageOrientation    UIImageOrientation RightMirrored                     CGContextDrawImage ctx  CGRectMake 0 0 self size height self size width   self CGImage            else               CGContextDrawImage ctx  CGRectMake 0 0 self size width self size height   self CGImage                        And now we just create a new UIImage from the drawing context and return it         return UIImage CGImage  CGBitmapContextCreateImage ctx              Use of this UIImage Extension in your code   let fixOrientationImage chosenImage fixOrientation    place this in your delegate methods of image picker like this  Swift 3 1    MARK  Image Picker Delegates     func imagePickerController            picker  UIImagePickerController          didFinishPickingMediaWithInfo info   String   Any            let chosenImage   info UIImagePickerControllerOriginalImage  as  UIImage         profileImg contentMode    scaleAspectFill         let fixOrientationImage chosenImage fixOrientation           profileImg image   fixOrientationImage          dismiss animated  true  completion  nil          Swift 2 0    MARK  Image Picker Delegates     func imagePickerController          picker  UIImagePickerController          didFinishPickingMediaWithInfo info   String   AnyObject                 let chosenImage   info UIImagePickerControllerOriginalImage  as  UIImage         profileImg contentMode    ScaleAspectFill             Fix the image orientation            let fixOrientationImage chosenImage fixOrientation           profileImg image   fixOrientationImage          dismissViewControllerAnimated true  completion  nil

User · Answer

an0  thanks for the answer  The only thing is autoreleasepool    func fixOrientation img  UIImage  - gt  UIImage         let result  UIImage      if img imageOrientation     up           result   img       else            result   autoreleasepool      - gt  UIImage  in             UIGraphicsBeginImageContextWithOptions img size  false  img scale              let rect   CGRect x  0  y  0  width  img size width  height  img size height              img draw in  rect               let normalizedImage   UIGraphicsGetImageFromCurrentImageContext               UIGraphicsEndImageContext                return normalizedImage                      return result

User · Answer

A UIImage has a property imageOrientation  which instructs the UIImageView and other UIImage consumers to rotate the raw image data  There s a good chance that this flag is being saved to the exif data in the uploaded jpeg image  but the program you use to view it is not honoring that flag   To rotate the UIImage to display properly when uploaded  you can use a category like this   UIImage fixOrientation h   interface UIImage  fixOrientation   -  UIImage   fixOrientation    end   UIImage fixOrientation m   implementation UIImage  fixOrientation   -  UIImage   fixOrientation           No-op if the orientation is already correct     if  self imageOrientation    UIImageOrientationUp  return self          We need to calculate the proper transformation to make the image upright         We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored      CGAffineTransform transform   CGAffineTransformIdentity       switch  self imageOrientation            case UIImageOrientationDown          case UIImageOrientationDownMirrored              transform   CGAffineTransformTranslate transform  self size width  self size height               transform   CGAffineTransformRotate transform  M PI               break           case UIImageOrientationLeft          case UIImageOrientationLeftMirrored              transform   CGAffineTransformTranslate transform  self size width  0               transform   CGAffineTransformRotate transform  M PI 2               break           case UIImageOrientationRight          case UIImageOrientationRightMirrored              transform   CGAffineTransformTranslate transform  0  self size height               transform   CGAffineTransformRotate transform  -M PI 2               break          case UIImageOrientationUp          case UIImageOrientationUpMirrored              break             switch  self imageOrientation            case UIImageOrientationUpMirrored          case UIImageOrientationDownMirrored              transform   CGAffineTransformTranslate transform  self size width  0               transform   CGAffineTransformScale transform  -1  1               break           case UIImageOrientationLeftMirrored          case UIImageOrientationRightMirrored              transform   CGAffineTransformTranslate transform  self size height  0               transform   CGAffineTransformScale transform  -1  1               break          case UIImageOrientationUp          case UIImageOrientationDown          case UIImageOrientationLeft          case UIImageOrientationRight              break                Now we draw the underlying CGImage into a new context  applying the transform        calculated above      CGContextRef ctx   CGBitmapContextCreate NULL  self size width  self size height                                               CGImageGetBitsPerComponent self CGImage   0                                               CGImageGetColorSpace self CGImage                                                CGImageGetBitmapInfo self CGImage        CGContextConcatCTM ctx  transform       switch  self imageOrientation            case UIImageOrientationLeft          case UIImageOrientationLeftMirrored          case UIImageOrientationRight          case UIImageOrientationRightMirrored                 Grr                CGContextDrawImage ctx  CGRectMake 0 0 self size height self size width   self CGImage               break           default              CGContextDrawImage ctx  CGRectMake 0 0 self size width self size height   self CGImage               break                And now we just create a new UIImage from the drawing context     CGImageRef cgimg   CGBitmapContextCreateImage ctx       UIImage  img    UIImage imageWithCGImage cgimg       CGContextRelease ctx       CGImageRelease cgimg       return img      end

User · Answer

Here   s a solution that doesn   t change the colorspace of the original image  If you want to normalize the orientation of a grayscale image  you are out of luck with all solutions based on UIGraphicsBeginImageContextWithOptions because it creates a context in the RGB colorspace  Instead  you have to create a context with the same properties as the original image and draw   extension UIImage       static let rotatedOrentations   UIImage Orientation      left   leftMirrored   right   rightMirrored       func normalizedImage   - gt  UIImage           if imageOrientation     up               return self                    let image   self cgImage          let swapOrientation   UIImage rotatedOrentations contains imageOrientation          let width   swapOrientation   image height   image width         let height   swapOrientation   image width   image height         let context   CGContext data  nil  width  width  height  height  bitsPerComponent  image bitsPerComponent  bytesPerRow  image bytesPerRow  space  image colorSpace   bitmapInfo  image bitmapInfo rawValue           let flipVertical   CGAffineTransform a  1  b  0  c  0  d  -1  tx  0  ty  CGFloat height            context concatenate flipVertical          UIGraphicsPushContext context          self draw at   zero          UIGraphicsPopContext            return UIImage cgImage  context makeImage

User · Answer

Here s UIImage extension for swift   extension UIImage        func fixOrientation   - gt  UIImage               No-op if the orientation is already correct         if   self imageOrientation    UIImageOrientation Up                 return self                        We need to calculate the proper transformation to make the image upright             We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored          var transform  CGAffineTransform   CGAffineTransformIdentity          if   self imageOrientation    UIImageOrientation Down    self imageOrientation    UIImageOrientation DownMirrored                 transform   CGAffineTransformTranslate transform  self size width  self size height              transform   CGAffineTransformRotate transform  CGFloat M PI                      if   self imageOrientation    UIImageOrientation Left    self imageOrientation    UIImageOrientation LeftMirrored                 transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformRotate transform  CGFloat M PI 2                      if   self imageOrientation    UIImageOrientation Right    self imageOrientation    UIImageOrientation RightMirrored                 transform   CGAffineTransformTranslate transform  0  self size height               transform   CGAffineTransformRotate transform   CGFloat -M PI 2                       if   self imageOrientation    UIImageOrientation UpMirrored    self imageOrientation    UIImageOrientation DownMirrored                 transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformScale transform  -1  1                     if   self imageOrientation    UIImageOrientation LeftMirrored    self imageOrientation    UIImageOrientation RightMirrored                 transform   CGAffineTransformTranslate transform  self size height  0               transform   CGAffineTransformScale transform  -1  1                         Now we draw the underlying CGImage into a new context  applying the transform            calculated above          var ctx  CGContextRef   CGBitmapContextCreate nil  Int self size width   Int self size height               CGImageGetBitsPerComponent self CGImage   0              CGImageGetColorSpace self CGImage               CGImageGetBitmapInfo self CGImage             CGContextConcatCTM ctx  transform           if   self imageOrientation    UIImageOrientation Left                self imageOrientation    UIImageOrientation LeftMirrored                self imageOrientation    UIImageOrientation Right                self imageOrientation    UIImageOrientation RightMirrored                     CGContextDrawImage ctx  CGRectMake 0 0 self size height self size width   self CGImage            else               CGContextDrawImage ctx  CGRectMake 0 0 self size width self size height   self CGImage                        And now we just create a new UIImage from the drawing context and return it         return UIImage CGImage  CGBitmapContextCreateImage ctx              Based on MetalHeart2003 s earlier work

User · Answer

I achieve this  by writing below a few lines of code extension UIImage        public func correctlyOrientedImage   - gt  UIImage           guard imageOrientation     up else   return self            UIGraphicsBeginImageContextWithOptions size  false  scale          draw in  CGRect origin   zero  size  size           let normalizedImage  UIImage   UIGraphicsGetImageFromCurrentImageContext            UIGraphicsEndImageContext            return normalizedImage

User · Answer

Swift 3 version based on  jake1981 who ve taken it from  MetalHeart2003  extension UIImage        func fixOrientation   - gt  UIImage               No-op if the orientation is already correct         if   self imageOrientation    UIImageOrientation up                 return self                        We need to calculate the proper transformation to make the image upright             We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored           var transform  CGAffineTransform   CGAffineTransform identity          if   self imageOrientation    UIImageOrientation down    self imageOrientation    UIImageOrientation downMirrored                 transform   transform translatedBy x  self size width  y  self size height              transform   transform rotated by  CGFloat M PI                      if   self imageOrientation    UIImageOrientation left    self imageOrientation    UIImageOrientation leftMirrored                 transform   transform translatedBy x  self size width  y  0              transform   transform rotated by  CGFloat M PI 2                      if   self imageOrientation    UIImageOrientation right    self imageOrientation    UIImageOrientation rightMirrored                 transform   transform translatedBy x  0  y  self size height               transform   transform rotated by  CGFloat -M PI 2                       if   self imageOrientation    UIImageOrientation upMirrored    self imageOrientation    UIImageOrientation downMirrored                 transform   transform translatedBy x  self size width  y  0              transform   transform scaledBy x  -1  y  1                     if   self imageOrientation    UIImageOrientation leftMirrored    self imageOrientation    UIImageOrientation rightMirrored                 transform   transform translatedBy x  self size height  y  0               transform   transform scaledBy x  -1  y  1                         Now we draw the underlying CGImage into a new context  applying the transform            calculated above          let ctx  CGContext   CGContext data  nil  width  Int self size width   height  Int self size height                                          bitsPerComponent  self cgImage  bitsPerComponent  bytesPerRow  0                                         space  self cgImage  colorSpace                                          bitmapInfo  self cgImage  bitmapInfo rawValue           ctx concatenate transform           if   self imageOrientation    UIImageOrientation left                self imageOrientation    UIImageOrientation leftMirrored                self imageOrientation    UIImageOrientation right                self imageOrientation    UIImageOrientation rightMirrored                  ctx draw self cgImage   in  CGRect x  0  y  0  width  self size height  height  self size width             else               ctx draw self cgImage   in  CGRect x  0  y  0  width  self size width  height  self size height                         And now we just create a new UIImage from the drawing context and return it         return UIImage cgImage  ctx makeImage

User · Answer

Swift 4 x 5 0 version of  an0  s solution   extension UIImage       func upOrientationImage   - gt  UIImage            switch imageOrientation           case  up              return self         default              UIGraphicsBeginImageContextWithOptions size  false  scale              draw in  CGRect origin   zero  size  size               let result   UIGraphicsGetImageFromCurrentImageContext               UIGraphicsEndImageContext               return result

User · Answer

in swift     UPDATE SWIFT 3 0  D  func sFunc imageFixOrientation img UIImage  - gt  UIImage            No-op if the orientation is already correct     if  img imageOrientation    UIImageOrientation up            return img               We need to calculate the proper transformation to make the image upright         We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored      var transform CGAffineTransform   CGAffineTransform identity      if  img imageOrientation    UIImageOrientation down            img imageOrientation    UIImageOrientation downMirrored             transform   transform translatedBy x  img size width  y  img size height          transform   transform rotated by  CGFloat M PI              if  img imageOrientation    UIImageOrientation left            img imageOrientation    UIImageOrientation leftMirrored             transform   transform translatedBy x  img size width  y  0          transform   transform rotated by  CGFloat M PI 2              if  img imageOrientation    UIImageOrientation right            img imageOrientation    UIImageOrientation rightMirrored             transform   transform translatedBy x  0  y  img size height           transform   transform rotated by  CGFloat -M PI 2               if  img imageOrientation    UIImageOrientation upMirrored            img imageOrientation    UIImageOrientation downMirrored             transform   transform translatedBy x  img size width  y  0          transform   transform scaledBy x  -1  y  1             if  img imageOrientation    UIImageOrientation leftMirrored            img imageOrientation    UIImageOrientation rightMirrored             transform   transform translatedBy x  img size height  y  0           transform   transform scaledBy x  -1  y  1                  Now we draw the underlying CGImage into a new context  applying the transform        calculated above      let ctx CGContext   CGContext data  nil  width  Int img size width   height  Int img size height                                     bitsPerComponent  img cgImage  bitsPerComponent  bytesPerRow  0                                    space  img cgImage  colorSpace                                     bitmapInfo  img cgImage  bitmapInfo rawValue        ctx concatenate transform        if  img imageOrientation    UIImageOrientation left            img imageOrientation    UIImageOrientation leftMirrored            img imageOrientation    UIImageOrientation right            img imageOrientation    UIImageOrientation rightMirrored                       ctx draw img cgImage   in  CGRect x 0 y 0 width img size height height img size width          else           ctx draw img cgImage   in  CGRect x 0 y 0 width img size width height img size height                  And now we just create a new UIImage from the drawing context     let cgimg CGImage   ctx makeImage        let imgEnd UIImage   UIImage cgImage  cgimg       return imgEnd

User · Answer

Here is the Swift-4 2 code for automatic fix your image orientation Returns UIImage  func AutofixImageOrientation   image  UIImage - gt UIImage        UIGraphicsBeginImageContext image size       image draw at   zero       let newImage   UIGraphicsGetImageFromCurrentImageContext        UIGraphicsEndImageContext        return newImage    image

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I used this page when designing my app that takes pictures and I found that the following method will correct the orientation and use less memory and processor than previous answers   CGImageRef cgRef   image CGImage  image     UIImage alloc  initWithCGImage cgRef scale 1 0 orientation UIImageOrientationUp     This basically just rewraps the actual image data with a new orientation  I was using  an0 s code but it makes a new image in memory which can be taxing on a 3264x2448 image that you might get from a camera

User · Answer

Here is an UIImage extension in Swift 2 based on the accepted answer by  Anomie  It uses a clearer switch case  It also takes the optional value returned by CGBitmapContextCreateImage   into consideration   extension UIImage       func rotateImageByOrientation   - gt  UIImage              No-op if the orientation is already correct         guard self imageOrientation     Up else               return self                       We need to calculate the proper transformation to make the image upright             We do it in 2 steps  Rotate if Left Right Down  and then flip if Mirrored          var transform   CGAffineTransformIdentity           switch  self imageOrientation            case  Down   DownMirrored              transform   CGAffineTransformTranslate transform  self size width  self size height              transform   CGAffineTransformRotate transform  CGFloat M PI            case  Left   LeftMirrored              transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformRotate transform  CGFloat M PI 2            case  Right   RightMirrored              transform   CGAffineTransformTranslate transform  0  self size height              transform   CGAffineTransformRotate transform  CGFloat -M PI 2            default              break                    switch  self imageOrientation            case  UpMirrored   DownMirrored              transform   CGAffineTransformTranslate transform  self size width  0              transform   CGAffineTransformScale transform  -1  1           case  LeftMirrored   RightMirrored              transform   CGAffineTransformTranslate transform  self size height  0              transform   CGAffineTransformScale transform  -1  1           default              break                       Now we draw the underlying CGImage into a new context  applying the transform            calculated above          let ctx   CGBitmapContextCreate nil  Int self size width   Int self size height               CGImageGetBitsPerComponent self CGImage   0              CGImageGetColorSpace self CGImage               CGImageGetBitmapInfo self CGImage  rawValue          CGContextConcatCTM ctx  transform          switch  self imageOrientation            case  Left   LeftMirrored   Right   RightMirrored              CGContextDrawImage ctx  CGRectMake 0 0 self size height self size width   self CGImage           default              CGContextDrawImage ctx  CGRectMake 0 0 self size width self size height   self CGImage                        And now we just create a new UIImage from the drawing context         if let cgImage   CGBitmapContextCreateImage ctx                return UIImage CGImage  cgImage            else               return self

User · Answer

If I understand  what you want to do is disregard the orientation of the UIImage  If so then you could do this -    image is your original image image    UIImage imageWithCGImage  image CGImage                               scale  image scale                         orientation  UIImageOrientationUp     or in Swift  -  image   UIImage CGImage  image CGImage   scale  image scale  orientation  Up    It solved my cropping issue   Hope  this is what you re looking for

User · Answer

I have experienced this issue with images taken from camera or saved in camera roll which are taken from camera  Images downloaded in photo library from safari browser does not rotate when uploaded   I was able to solve this issue by making the image data as JPEG before uploading   let image   info UIImagePickerControllerOriginalImage  as  UIImage         let data   UIImageJPEGRepresentation image  1 0    We can now use the data for uploading and the image will not get rotated after upload   Hope this will work

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If you enable editing  then the edited image  as opposed to the original  will be oriented as expected   UIImagePickerController  imagePickerController     UIImagePickerController alloc  init   imagePickerController allowsEditing   YES     set delegate and present controller  -  void imagePickerController  UIImagePickerController   picker didFinishPickingMediaWithInfo  NSDictionary   info       UIImage  photo    info valueForKey UIImagePickerControllerEditedImage          do whatever     Enabling editing allows the user to resize and move the image before tapping  Use Photo

User · Answer

I transposed this into Xamarin   private static UIImage FixImageOrientation UIImage image                if  image Orientation    UIImageOrientation Up                        return image                     var transform   CGAffineTransform MakeIdentity             float pi    float Math PI           switch  image Orientation                        case UIImageOrientation Down              case UIImageOrientation DownMirrored                  transform   CGAffineTransform Translate transform  image Size Width  image Size Height                   transform   CGAffineTransform Rotate transform  pi                   break               case UIImageOrientation Left              case UIImageOrientation LeftMirrored                  transform   CGAffineTransform Translate transform  image Size Width  0                   transform   CGAffineTransform Rotate transform  pi   2                   break               case UIImageOrientation Right              case UIImageOrientation RightMirrored                  transform   CGAffineTransform Translate transform  0  image Size Height                   transform   CGAffineTransform Rotate transform  - pi   2                    break                     switch  image Orientation                        case UIImageOrientation UpMirrored              case UIImageOrientation DownMirrored                  transform   CGAffineTransform Translate transform  image Size Width  0                   transform   CGAffineTransform Scale transform  -1  1                   break               case UIImageOrientation LeftMirrored              case UIImageOrientation RightMirrored                  transform   CGAffineTransform Translate transform  image Size Height  0                   transform   CGAffineTransform Scale transform  -1  1                   break                     var ctx   new CGBitmapContext null   nint image Size Width   nint image Size Height  image CGImage BitsPerComponent              image CGImage BytesPerRow  image CGImage ColorSpace  image CGImage BitmapInfo            ctx ConcatCTM transform            switch  image Orientation                        case UIImageOrientation Left              case UIImageOrientation LeftMirrored              case UIImageOrientation Right              case UIImageOrientation RightMirrored                  ctx DrawImage new CGRect 0  0  image Size Height  image Size Width   image CGImage                   break               default                  ctx DrawImage new CGRect 0  0  image Size Width  image Size Height   image CGImage                   break                     var cgimg   ctx ToImage            var img   new UIImage cgimg            ctx Dispose            ctx   null          cgimg Dispose            cgimg   null           return img

User · Answer

Here is a Swift version of the answer by  an0   func normalizedImage   - gt  UIImage      if  self imageOrientation    UIImageOrientation Up           return self         UIGraphicsBeginImageContextWithOptions self size  false  self scale     let rect   CGRect x  0  y  0  width  self size width  height  self size height    self drawInRect rect     let normalizedImage   UIImage   UIGraphicsGetImageFromCurrentImageContext     UIGraphicsEndImageContext      return normalizedImage      Also in a more general function   func fixOrientation img UIImage  - gt  UIImage      if  img imageOrientation    UIImageOrientation Up           return img         UIGraphicsBeginImageContextWithOptions img size  false  img scale     let rect   CGRect x  0  y  0  width  img size width  height  img size height    img drawInRect rect     let normalizedImage   UIImage   UIGraphicsGetImageFromCurrentImageContext     UIGraphicsEndImageContext      return normalizedImage       Swift 3 version   func fixOrientation img  UIImage  - gt  UIImage       if  img imageOrientation     up            return img            UIGraphicsBeginImageContextWithOptions img size  false  img scale      let rect   CGRect x  0  y  0  width  img size width  height  img size height      img draw in  rect       let normalizedImage   UIGraphicsGetImageFromCurrentImageContext        UIGraphicsEndImageContext        return normalizedImage

User · Answer

I figured out a much simpler one   -  UIImage   normalizedImage       if  self imageOrientation    UIImageOrientationUp  return self        UIGraphicsBeginImageContextWithOptions self size  NO  self scale        self drawInRect  CGRect  0  0  self size        UIImage  normalizedImage   UIGraphicsGetImageFromCurrentImageContext        UIGraphicsEndImageContext        return normalizedImage      BTW   Anomie s code does not take scale into account  so will not work for 2x images

User · Answer

This what I have found for fixing orientation issue  UIImage  initialImage    info objectForKey   UIImagePickerControllerOriginalImage    NSData  data   UIImagePNGRepresentation self initialImage    UIImage  tempImage    UIImage imageWithData data   UIImage  fixedOrientationImage    UIImage imageWithCGImage tempImage CGImage                                      scale initialImage scale                                orientation self initialImage imageOrientation   initialImage   fixedOrientationImage    EDIT   UIImage  initialImage    info objectForKey   UIImagePickerControllerOriginalImage    NSData  data   UIImagePNGRepresentation self initialImage    initialImage    UIImage imageWithCGImage  UIImage imageWithData data  CGImage                                                      scale initialImage scale                                                orientation self initialImage imageOrientation

User · Answer

Update for Swift 3 1 based on Sourabh Sharma s  answer  with code clean up   extension UIImage       func fixedOrientation   - gt  UIImage           if imageOrientation     up   return self            var transform CGAffineTransform    identity         switch imageOrientation           case  down   downMirrored              transform   transform translatedBy x  size width  y  size height  rotated by   pi          case  left   leftMirrored              transform   transform translatedBy x  size width  y  0  rotated by   pi 2          case  right   rightMirrored              transform   transform translatedBy x  0  y  size height  rotated by  - pi 2          default  break                    switch imageOrientation           case  upMirrored   downMirrored              transform   transform translatedBy x  size width  y  0  scaledBy x  -1  y  1          case  leftMirrored   rightMirrored              transform   transform translatedBy x  size height  y  0  scaledBy x  -1  y  1          default  break                    let ctx   CGContext data  nil  width  Int size width   height  Int size height                                          bitsPerComponent  cgImage  bitsPerComponent  bytesPerRow  0                                         space  cgImage  colorSpace   bitmapInfo  cgImage  bitmapInfo rawValue           ctx concatenate transform           switch imageOrientation           case  left   leftMirrored   right   rightMirrored              ctx draw cgImage   in  CGRect x  0  y  0  width  size height height  size width           default              ctx draw cgImage   in  CGRect x  0  y  0  width  size width height  size height                     return UIImage cgImage  ctx makeImage               Picker delegate method example   func imagePickerController   picker  UIImagePickerController  didFinishPickingMediaWithInfo info   String   Any         guard let originalImage   info UIImagePickerControllerOriginalImage  as  UIImage else   return       let fixedImage   originalImage fixedOrientation          do your work

[ios] iOS UIImagePickerController result image orientation after upload

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