guard let cgImage = image.cgImage else { return [] } let width = cgImage.width let height = cgImage.height var splitImages: [UIImage] = [] letpieceWidth=width/colsletpieceHeight=height/rowsforiin0..<rows{forjin0..<cols{letrect=CGRect(x:j*pieceWidth, y:i*pieceHeight, width:piece...
Swift: Convert CGImage or CIImage to UIImage ? 1 2 UIImage(CGImage:cgImage) UIImage(CIImage:ciImage) Swift: Convert UIImage to CIImage ? 1 2 3 //uiImage: UIImage //Convert to CIImage varciImage=CIImage(image:uiImage) Swift: Convert UIImage to CGImage ...
letimage =self.photoImageView.image! letnewimage =self.convertUIImageToCGImage(uiimage: image) letflippedImage =UIImage(cgImage: newimage,scale: image.scale,orientation:UIImage.Orientation.upMirrored) 这样就好了,不能直接采用UIImage.cgimage获取需要转化一遍才行...
func operate(radians: CGFloat = 0.0, isMirrorH: Bool = false, isMirrorV: Bool = false) -> UIImage { if radians == 0.0, !isMirrorH, !isMirrorV { return self } var targetImage = self if isMirrorH { // 水平镜像 targetImage = targetImage.flipH() } if isMirrorV { // 垂直镜像...
+ (UIImage *)resizeImg:(UIImage *)image :(int)width :(int)height :(int)interpolation; @end NS_ASSUME_NONNULL_END 10. 编辑 OpenCVWrapper.mm OpenCVWrapper.mm应如下所示。 #import #import #import "OpenCVWrapper.h" * add a method convertToMat to UIImage class ...
完成渐进式JPEG:使用CGImageDestinationFinalize方法完成渐进式JPEG的创建。 以下是一个示例代码,演示了如何在Swift中将图像转换为渐进式JPEG: 代码语言:txt 复制 import UIKit import CoreGraphics func convertToProgressiveJPEG(image: UIImage) -> Data? { ...
func convertToGrayScale(image: UIImage) -> UIImage? { let imageRect:CGRect = CGRect(x:0, y:0, width:image.size.width, height: image.size.height) let colorSpace = CGColorSpaceCreateDeviceGray() let width = image.size.width let height = image.size.height ...
@interface UIImage (OpenCVWrapper) - (void)convertToMat: (cv::Mat *)pMat: (bool)alphaExists; @end @implementation UIImage (OpenCVWrapper) - (void)convertToMat: (cv::Mat *)pMat: (bool)alphaExists { if (self.imageOrientation == UIImageOrientationRight) { ...
在上述示例代码中,首先定义了一个函数convertToGrayScale,用于将UIImage对象转换为灰度图像。该函数使用Core Image框架中的CIFilter来实现灰度转换。 然后,创建了一个URLSession对象,并使用URLSession的dataTask(with:completionHandler:)方法创建了一个URLSessionDataTask对象。该任务用于获取指定URL的网络数据。
接下来,我们将使用UIImagePNGRepresentation方法将图片对象转换为 PNG 数据。这个方法接受一个UIImage对象作为参数,并返回一个Data对象,该对象包含了转换后的 PNG 数据。 guardletpngData=UIImagePNGRepresentation(originalImage)else{fatalError("Failed to convert image to PNG")} ...