var img = System.Drawing.Image.FromStream(ms); int width = img.Width; int height = img.Height; var x = img.HorizontalResolution; var y = img.VerticalResolution; var tempHeight = height * 300 / y; var tempWidth = width * 300 / y; Bitmap bmpTemp = new
iOS 图片背景模糊效果 1.使用CoreImage中的模糊滤镜 原始效果图如下: CoreImage的实现: - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UIImage * image = [UIImage imageNamed:@"icon"]; /*..CoreImage中的模糊效果滤镜..*/