核心圖像自動調整過濾器未檢測到紅眼

Question

我在iOS 5中使用了新的核心圖像API來執行自動增強功能。然而，從autoAdjustmentFilters或autoAdjustmentFiltersWithOptions返回的數組永遠不會消除紅眼，它只會返回諸如CIFaceBalance，CIVibrance和CIHighlightsAndShadows之類的過濾器。我甚至嘗試將autoAdjustmentFiltersWithOptions字典鍵kCIImageAutoAdjustRedEye設置爲TRUE，即使文檔默認爲true。我知道相機/照片應用會在相同圖像上檢測到紅眼，所以出現問題。

Answer 1

此代碼將返回CIRedEyeCorrections。因爲我沒有真正的紅眼的照片。我只是谷歌，發現這一個「redeye_incorrect_lg.jpg」。這是谷歌圖片返回的第一張女性圖片。我發現，並不是所有的紅色眼睛的圖像可以被檢測到....所以一定要確保你的是真正的紅眼......

-(void) coreImageInit 
{ 
    NSString *sourcePath = [[NSBundle mainBundle] resourcePath]; 
    NSString *file1 = [sourcePath stringByAppendingPathComponent:@"/redeye_incorrect_lg.jpg"]; 
    UIImage *img = [[[UIImage alloc]initWithContentsOfFile:file1]autorelease]; 
    CIImage *image = [[CIImage alloc]initWithImage:img]; 
    NSLog(@"after ciimage: %@", kCIImageAutoAdjustEnhance); 
    NSDictionary *options = [NSDictionary dictionaryWithObject:@"NO" forKey:kCIImageAutoAdjustEnhance]; 
    NSLog(@"options: %@", options); 
    NSArray *adjustments = [image autoAdjustmentFiltersWithOptions:options]; 
    NSLog(@"adjustments: %@ ", adjustments); 

} 

這裏是我的日誌輸出，顯示它檢測到的紅眼：

11/4/11 10:13:19.231 AM iPadTestBed: after ciimage: kCIImageAutoAdjustEnhance 
11/4/11 10:13:19.232 AM iPadTestBed: options: { 
    kCIImageAutoAdjustEnhance = NO; 
} 
11/4/11 10:13:19.879 AM iPadTestBed: adjustments: (
    "<CIRedEyeCorrections: inputImage=<CIImage: 0x878a980 extent [0 0 370 427]> inputCameraModel=nil inputCorrectionInfo=(\n  {\n  averageSkinLuminance = 0;\n  bitmaskThreshold = \"0.1372549\";\n  bitmaskX = \"0.372973\";\n  bitmaskY = \"0.5854801\";\n  cornealReflectionThreshold = \"0.854902\";\n  cornealReflectionX = \"0.3783784\";\n  cornealReflectionY = \"0.587822\";\n  existingPupilAverage = \"0.1607843\";\n  existingPupilHigh = \"0.345098\";\n  existingPupilLow = \"0.01176471\";\n  existingPupilMedium = \"0.1333333\";\n  finalEyeCase = 0;\n  forceCase = 0;\n  fullImageHeight = 427;\n  fullImageWidth = 370;\n  imageOrientation = 1;\n  imageSignalToNoiseRatio = 20;\n  imageSpecialValue = 0;\n  interocularDistance = \"0.2284475\";\n  pointX = \"0.3702703\";\n  pointY = \"0.587822\";\n  pupilShadeAlignment = 1;\n  pupilShadeAverage = \"0.2117647\";\n  pupilShadeHigh = \"0.2901961\";\n  pupilShadeLow = \"0.1372549\";\n  pupilShadeMedium = \"0.2117647\";\n  repairRectangleMaximumX = \"0.4162162\";\n  repairRectangleMaximumY = \"0.557377\";\n  repairRectangleMinimumX = \"0.3513514\";\n  repairRectangleMinimumY = \"0.6135831\";\n  searchRectangleMaximumX = \"0.4864865\";\n  searchRectangleMaximumY = \"0.4871194\";\n  searchRectangleMinimumX = \"0.2540541\";\n  searchRectangleMinimumY = \"0.6885245\";\n  size = \"0.012472\";\n  snappedX = \"0.3702703\";\n  snappedY = \"0.587822\";\n },\n  {\n  averageSkinLuminance = 0;\n  bitmaskThreshold = \"0.09411766\";\n  bitmaskX = \"0.7081081\";\n  bitmaskY = \"0.6533958\";\n  cornealReflectionThreshold = \"0.8745099\";\n  cornealReflectionX = \"0.7081081\";\n  cornealReflectionY = \"0.6487119\";\n  existingPupilAverage = \"0.1686275\";\n  existingPupilHigh = \"0.3490196\";\n  existingPupilLow = \"0.03921569\";\n  existingPupilMedium = \"0.1372549\";\n  finalEyeCase = 0;\n  forceCase = 0;\n  fullImageHeight = 427;\n  fullImageWidth = 370;\n  imageOrientation = 1;\n  imageSignalToNoiseRatio = 20;\n  imageSpecialValue = 0;\n  interocularDistance = \"0.2284475\";\n  pointX = \"0.7081081\";\n  pointY = \"0.6557377\";\n  pupilShadeAlignment = 1;\n  pupilShadeAverage = \"0.2117647\";\n  pupilShadeHigh = \"0.2901961\";\n  pupilShadeLow = \"0.1372549\";\n  pupilShadeMedium = \"0.2117647\";\n  repairRectangleMaximumX = \"0.7405406\";\n  repairRectangleMaximumY = \"0.6229508\";\n  repairRectangleMinimumX = \"0.6864865\";\n  repairRectangleMinimumY = \"0.6697892\";\n  searchRectangleMaximumX = \"0.827027\";\n  searchRectangleMaximumY = \"0.5526932\";\n  searchRectangleMinimumX = \"0.5945946\";\n  searchRectangleMinimumY = \"0.7540984\";\n  size = \"0.010893\";\n  snappedX = \"0.7081081\";\n  snappedY = \"0.6557377\";\n }\n)>" 
)