Swift圖象處置之優化照片。本站提示廣大學習愛好者:(Swift圖象處置之優化照片)文章只能為提供參考,不一定能成為您想要的結果。以下是Swift圖象處置之優化照片正文
Core Image能經由過程剖析圖片的各個屬性,人臉的區域等停止主動優化圖片。我們只須要挪用autoAdjustmentFiltersWithOptions這個API辦法獲得各個主動加強濾鏡來優化圖片便可。不論是人物照片照樣景致照都可加強後果。
(之前別的還有個叫autoAdjustmentFilters的辦法,現已破除。)
1.詳細應用的濾鏡以下:
(1)CIRedEyeCorrection:修復因相機的閃光燈招致的各類紅眼
(2)CIFaceBalance:調劑膚色
(3)CIVibrance:在不影響膚色的情形下,改良圖象的飽和度
(4)CIToneCurve:改良圖象的比較度
(5)CIHighlightShadowAdjust:改良暗影細節
2.autoAdjustmentFiltersWithOptions辦法參數解釋(字典類型):
(1)CIDetectorImageOrientation供給圖象偏向:使Core Image能更准確的定位到臉的地位,對CIRedEyeCorrection和CIFaceBalance濾鏡很有效。
(2)kCIImageAutoAdjustEnhance設為false :只須要清除紅眼,不要其他濾鏡
(3)kCIImageAutoAdjustRedEye設為false :清除紅眼不要,其他濾鏡都要
3.後果圖以下(右邊為優化後的):
4.代碼以下(一切濾鏡都應用):
import UIKit class ViewController: UIViewController{ @IBOutlet weak var imageView: UIImageView! //圖片原圖 lazy var originalImage: UIImage = { return UIImage(named: "IMG_0473.jpg") }()! lazy var context: CIContext = { return CIContext(options: nil) }() override func viewDidLoad() { super.viewDidLoad() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } //優化圖片 @IBAction func autoAdjustImage(sender: AnyObject) { var inputImage = CIImage(image: originalImage) let options:[String : AnyObject] = [CIDetectorImageOrientation:1] //圖片偏向 let filters = inputImage!.autoAdjustmentFiltersWithOptions(options) //遍歷一切濾鏡,順次處置圖象 for filter: CIFilter in filters { filter.setValue(inputImage, forKey: kCIInputImageKey) inputImage = filter.outputImage } let cgImage = context.createCGImage(inputImage!, fromRect: inputImage!.extent) self.imageView.image = UIImage(CGImage: cgImage) } //復原圖片 @IBAction func resetImage(sender: AnyObject) { self.imageView.image = originalImage } }
研討並本身敲一敲或許做成直接用的類是不錯的選擇.上面的地址不是寫逝世的,加了攝影優化的功效,代碼以下:(然則有一個BUG臨時沒法處理,待處理了我再彌補,年夜家本身用起來就曉得在哪裡了)
import UIKit //從相冊拔取或許攝影須要完成UIImagePickerControllerDelegate UINavigationControllerDelegate class ViewController: UIViewController ,UIImagePickerControllerDelegate,UINavigationControllerDelegate{ @IBOutlet weak var imageView: UIImageView! var chooseImage: UIImage = UIImage() //圖片原圖 // lazy var originalImage: UIImage = UIImage(named: "jobZ.png")! // // lazy var context: CIContext = CIContext(options: nil) lazy var context: CIContext = { return CIContext(options: nil) }() override func viewDidLoad() { // self.imageView.image = UIImage(named: "jobZ.png") } //丑化圖片 @IBAction func autoAdjustImage(sender: UIButton) { var inputImage = CIImage(image: self.chooseImage) let options:[String : AnyObject] = [CIDetectorImageOrientation:1] //圖片偏向 let filters = inputImage!.autoAdjustmentFiltersWithOptions(options) //遍歷一切濾鏡,順次處置圖象 for filter: CIFilter in filters { filter.setValue(inputImage, forKey: kCIInputImageKey) inputImage = filter.outputImage } let cgImage = context.createCGImage(inputImage!, fromRect: inputImage!.extent) self.imageView.image = UIImage(CGImage: cgImage) } //拔取圖片 @IBAction func chooseImage(sender: UIButton) { if UIImagePickerController.isSourceTypeAvailable(.PhotoLibrary){ //初始化圖片掌握器 let picker = UIImagePickerController() //設置署理 picker.delegate = self //指定圖片掌握器類型 source我這裡寫的是用攝影,假如想用圖庫前面值改成UIImagePickerControllerSourceType.PhotoLibrary便可 picker.sourceType = UIImagePickerControllerSourceType.Camera //假如有前置攝像頭則挪用前置攝像頭 if UIImagePickerController.isCameraDeviceAvailable(UIImagePickerControllerCameraDevice.Front){ picker.cameraDevice = UIImagePickerControllerCameraDevice.Front } //彈出掌握器,顯示界面 self.presentViewController(picker, animated: true, completion: { () -> Void in }) }else{ print("讀取相冊毛病") } } //復原圖片 @IBAction func resetImage(sender: UIButton) { self.imageView.image = self.chooseImage } //署理 //選擇圖片勝利子女理 func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) { //檢查info對象 print(info) //獲得選擇的原圖 let image = info[UIImagePickerControllerOriginalImage] as! UIImage self.imageView.image = image self.chooseImage = image //圖片掌握器加入 picker.dismissViewControllerAnimated(true, completion: { () -> Void in }) } }
此段代碼運轉後果以下: