[英]raw CIFilter has nil outputImage
I get some DNG raw files and want to show them in iPhone. 我得到了一些DNG原始文件,并希望在iPhone中显示它们。 I use CIFilter
to read the raw file, but when I try to get the outputImage
, it returns nil
. 我使用CIFilter
读取原始文件,但是当我尝试获取outputImage
,它返回nil
。
The code looks like: 代码如下:
NSURL *url = [[NSBundle mainBundle] URLForResource:@"1" withExtension:@"DNG"];
CIFilter *filter = nil;
filter = [CIFilter filterWithImageURL:url options:nil];
[filter setValue:@(2000) forKey:kCIInputNeutralTemperatureKey];
CIImage *imgCI = [filter.outputImage imageByApplyingFilter:@"CIVignette"];//5
UIImage *img = [UIImage imageWithCIImage:imgCI];
In the line 5, the fileter.outputImage
is nil and hence the final img
is nil. 在第5行中, fileter.outputImage
为nil,因此最终的img
为nil。 I check the DNG file in Mac and it shows it is Adobe Raw
. 我在Mac中检查了DNG文件,它显示它是Adobe Raw
。 I also print the filter
in console: 我还在控制台中打印filter
:
CIRAWFilterImpl: inputRequestedSushiMode=nil inputNeutralChromaticityX=0.5342335533653005 inputNeutralChromaticityY=0.4233451399853654 inputNeutralTemperature=2000 inputNeutralTint=9.616524016108169 inputNeutralLocation=[] inputEV=0 inputBoost=1 inputDraftMode=nil inputScaleFactor=1 inputIgnoreOrientation=nil inputImageOrientation=1 inputEnableSharpening=1 inputEnableNoiseTracking=1 inputEnableVendorLensCorrection=0 inputNoiseReductionAmount=0 inputLuminanceNoiseReductionAmount=nil inputColorNoiseReductionAmount=nil inputNoiseReductionSharpnessAmount=nil inputNoiseReductionContrastAmount=nil inputNoiseReductionDetailAmount=nil inputMoireAmount=nil inputDecoderVersion=nil inputBoostShadowAmount=nil inputBias=nil inputBaselineExposure=nil inputDisableGamutMap=0 inputHueMagMR=nil inputHueMagRY=nil inputHueMagYG=nil inputHueMagGC=nil inputHueMagCB=nil inputHueMagBM=nil inputLinearSpaceFilter=nil> CIRAWFilterImpl:inputRequestedSushiMode =零inputNeutralChromaticityX = 0.5342335533653005 inputNeutralChromaticityY = 0.4233451399853654 inputNeutralTemperature = 2000 inputNeutralTint = 9.616524016108169 inputNeutralLocation = [] inputEV = 0 inputBoost = 1 inputDraftMode =零inputScaleFactor = 1 inputIgnoreOrientation =零inputImageOrientation = 1 inputEnableSharpening = 1 inputEnableNoiseTracking = 1 inputEnableVendorLensCorrection = 0 inputNoiseReductionAmount = 0 inputLuminanceNoiseReductionAmount =零inputColorNoiseReductionAmount =零inputNoiseReductionSharpnessAmount =零inputNoiseReductionContrastAmount =零inputNoiseReductionDetailAmount =零inputMoireAmount =零inputDecoderVersion =零inputBoostShadowAmount =零inputBias =零inputBaselineExposure =零inputDisableGamutMap = 0 inputHueMagMR =零inputHueMagRY =零inputHueMagYG =零inputHueMagGC =零inputHueMagCB =零inputHueMagBM = nil inputLinearSpaceFilter = nil>
The inputDecoderVersion
seems nil which may cause the problem(but I'm not sure). inputDecoderVersion
似乎为nil,这可能会导致问题(但我不确定)。
The DNG files are downloaded from Internet, and I also try the NEF
files which has the same result. DNG文件是从Internet下载的,我也尝试了具有相同结果的NEF
文件。
Could anyone give some advice? 任何人都可以提一些建议吗?
It should run in real device. 它应该在真实设备中运行。
In simulator, it returns nil
. 在模拟器中,它返回nil
。
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