Konnte SubIFD für ein dng Bild in MATLAB

Question

nicht abrufen Ich habe ein digitales Negativ, das ich versuche, in Matlab zu lesen und es zu verarbeiten. Ich habe die folgenden 3 Zeilen benutzt, um es vorläufig zu lesen.

filename='imagename.dng'; 
t=Tiff(filename,'r'); 
offsets = getTag(t,'SubIFD'); 

Die Warnungen und Fehler, die ich bekommen sind als

raw2display 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 33421 (0x828d) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 33422 (0x828e) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 33434 (0x829a) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 33437 (0x829d) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 34855 (0x8827) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 36867 (0x9003) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 37386 (0x920a) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 37398 (0x9216) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 50964 (0xc714) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 50965 (0xc715) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 51009 (0xc741) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 51022 (0xc74e) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library warning - 'TIFFReadDirectory: Unknown 
field with tag 51041 (0xc761) encountered.' 
> In Tiff (line 651) 
    In raw2display (line 4) 
Warning: TIFF library error - '_TIFFVSetField: 
/Users/bryan/Documents/Project/img_0531/IMG_20160531_105331.dng: 
Bad value 0 for "Orientation" tag.' - file may be corrupt. 
> In Tiff (line 651) 
    In raw2display (line 4) 
Error using tifflib 
Unable to retrieve SubIFD. 

Error in Tiff/getTag (line 838) 
        tagValue = 
        tifflib('getField',obj.FileID,Tiff.TagID.(tagId)); 

Error in raw2display (line 5) 
offsets = getTag(t,'SubIFD'); 

Die imfinfo für das Bild folgt, gibt mir die folgende Ausgabe

Filename: '' FileModDate: '31-May-2016 13:53:32' FileSize: 24738008 Format: 'tif' FormatVersion: [] Width: 4080 Height: 3028 BitDepth: 16 ColorType: 'CFA' FormatSignature: [73 73 42 0] ByteOrder: 'little-endian' NewSubFileType: 0 BitsPerSample: 16 Compression: 'Uncompressed' PhotometricInterpretation: 'CFA' StripOffsets: [1x3028 double] SamplesPerPixel: 1 RowsPerStrip: 1 StripByteCounts: [1x3028 double] XResolution: 72 YResolution: 72 ResolutionUnit: 'Inch' Colormap: [] PlanarConfiguration: 'Chunky' TileWidth: [] TileLength: [] TileOffsets: [] TileByteCounts: [] Orientation: 0 FillOrder: 1 GrayResponseUnit: 0.0100 MaxSampleValue: 65535 MinSampleValue: 0 Thresholding: 1 Offset: 8 ImageDescription: '' Make: 'LGE' Model: 'Nexus 5X' Software: 'google/bullhead/bullhe…' DateTime: '2016:05:27 06:33:52' Copyright: '' ExposureTime: 1.9983e-04 FNumber: 2 ISOSpeedRatings: 80 DateTimeOriginal: '2016:05:27 06:33:52' FocalLength: 4.6700 DNGVersion: [1 4 0 0] DNGBackwardVersion: [1 1 0 0] UniqueCameraModel: 'Nexus 5X-LGE-google' CFAPlaneColor: [0 1 2] CFALayout: 1 BlackLevelRepeatDim: [2 2] BlackLevel: [52 52 52 52] WhiteLevel: 1023 DefaultScale: [1 1] DefaultCropOrigin: [8 8] DefaultCropSize: [4016 3008] ColorMatrix1: [1x9 double] ColorMatrix2: [1x9 double] CameraCalibration1: [1x9 double] CameraCalibration2: [1x9 double] AsShotNeutral: [0.5312 1 0.4062] CalibrationIlluminant1: 21 CalibrationIlluminant2: 17 ActiveArea: [2 48 3026 4080] UnknownTags: [8x1 struct]

Dieses Bild geklickt wurde ein Nexus mit 5x Gerät läuft die App Android L Kamera. Auch merke ich, dass es hier keine LinearizationTable gibt. Kannst du mir helfen, das zu beheben oder mir mehr Informationen darüber zu geben?

Answer 1

Wenn es nicht funktioniert, versuchen Sie zuerst "Adobe DNG Konverter": http://supportdownloads.adobe.com/product.jsp?product=106&platform=Windows Danach versuchen Sie, den Code auf dem verarbeiteten Bild auszuführen. Das Mosaikbild wird in der Variablen "cfa" in B W

clear all; 
close all; 
warning off MATLAB:tifflib:TIFFReadDirectory:libraryWarning 
t = Tiff('DSC_9511_conv.dng','r'); 
offsets = getTag(t,'SubIFD'); 
setSubDirectory(t,offsets(1)); 
cfa = read(t); 
close(t); 

gespeichert