Tag: 核心图像

iOS 5.0中的核心图像filter是否足够快实时video处理?

现在,苹果已经将Core Image框架移植到了iOS 5.0,我想知道:Core Image是否足够快,可以将实时滤镜和效果应用于相机video? 另外,学习iOS 5.0的Core Image框架有什么好的起点?

如何将UIImage转换为CIImage,反之亦然

我试图从屏幕上显示的ImageView中获取CIImage 。 UIImage *image = myImageView.image; 将图像UIImage转换为CIImage 。 CIImage *cImage = [….]; 这个怎么做?

iOS 5是否支持模糊的CoreImagefunction?

根据文档,它应该支持模糊,请注意“在iOS 5.0及更高版本中可用”: CIFilter类参考 但根据设备,它不会: [CIFilter filterNamesInCategory:kCICategoryBlur]; 什么也不返回 根据以下只有这些filter可在我的iPhone和模拟器(都运行5.0): [CIFilter filterNamesInCategory:kCICategoryBuiltIn] CIAdditionCompositing, CIAffineTransform, CICheckerboardGenerator, CIColorBlendMode, CIColorBurnBlendMode, CIColorControls, CIColorCube, CIColorDodgeBlendMode, CIColorInvert, CIColorMatrix, CIColorMonochrome, CIConstantColorGenerator, CICrop, CIDarkenBlendMode, CIDifferenceBlendMode, CIExclusionBlendMode, CIExposureAdjust, CIFalseColor, CIGammaAdjust, CIGaussianGradient, CIHardLightBlendMode, CIHighlightShadowAdjust, CIHueAdjust, CIHueBlendMode, CILightenBlendMode, CILinearGradient, CILuminosityBlendMode, CIMaximumCompositing, CIMinimumCompositing, CIMultiplyBlendMode, CIMultiplyCompositing, CIOverlayBlendMode, CIRadialGradient, CISaturationBlendMode, CIScreenBlendMode, CISepiaTone, CISoftLightBlendMode, CISourceAtopCompositing, CISourceInCompositing, CISourceOutCompositing, CISourceOverCompositing, CIStraightenFilter, CIStripesGenerator, CITemperatureAndTint, CIToneCurve, […]

创build一个模糊重叠视图

在新的iOS的音乐应用程序中,我们可以看到一个模糊的视图背后的专辑封面。 怎么能这样做呢? 我已阅读文档,但没有find任何东西。