""" Defines data for TIFF manipulations. """ __all__ = ['type2name', 'name2type', 'type2bytes', 'type2dtype', 'tag_value2name', 'tag_name2value', 'tag_value2type', 'LittleEndianNumpyDTypes', 'BigEndianNumpyDTypes', 'default_tag_values', 'sample_format_map'] import numpy # tag_info = ''' # standard tags: NewSubfileType FE LONG 1 SubfileType FF SHORT 1 ImageWidth 100 SHORT|LONG 1 ImageLength 101 SHORT|LONG 1 BitsPerSample 102 SHORT SamplesPerPixel Compression 103 SHORT 1 Uncompressed 1 CCITT1D 2 Group3Fax 3 Group4Fax 4 LZW 5 JPEG 6 PackBits 32773 PhotometricInterpretation 106 SHORT 1 WhiteIsZero 0 BlackIsZero 1 RGB 2 RGBPalette 3 TransparencyMask 4 CMYK 5 YCbCr 6 CIELab 8 Threshholding 107 SHORT 1 CellWidth 108 SHORT 1 CellLength 109 SHORT 1 FillOrder 10A SHORT 1 DocumentName 10D ASCII ImageDescription 10E ASCII Make 10F ASCII Model 110 ASCII StripOffsets 111 SHORT|LONG StripsPerImage Orientation 112 SHORT 1 TopLeft 1 TopRight 2 BottomRight 3 BottomLeft 4 LeftTop 5 RightTop 6 RightBottom 7 LeftBottom 8 SamplesPerPixel 115 SHORT 1 RowsPerStrip 116 SHORT|LONG 1 StripByteCounts 117 LONG|SHORT StripsPerImage MinSampleValue 118 SHORT SamplesPerPixel MaxSampleValue 119 SHORT SamplesPerPixel XResolution 11A RATIONAL 1 YResolution 11B RATIONAL 1 PlanarConfiguration 11C SHORT 1 Chunky 1 Planar 2 PageName 11D ASCII XPosition 11E DOUBLE YPosition 11F DOUBLE FreeOffsets 120 LONG FreeByteCounts 121 LONG GrayResponseUnit 122 SHORT 1 GrayResponseCurve 123 SHORT 2**BitsPerSample T4Options 124 LONG 1 T6Options 125 LONG 1 ResolutionUnit 128 SHORT 1 PageNumber 129 SHORT 2 TransferFunction 12D SHORT (1|SamplesPerPixel)*2**BitsPerSample Software 131 ASCII DateTime 132 ASCII 20 Artist 13B ASCII HostComputer 13C ASCII Predictor 13D SHORT 1 WhitePoint 13E RATIONAL 2 PrimaryChromaticities 13F RATIONAL 6 ColorMap 140 SHORT 3*(2**BitsPerSample) HalftoneHints 141 SHORT 2 TileWidth 142 SHORT|LONG 1 TileLength 143 SHORT|LONG 1 TileOffsets 144 LONG TilesPerImage TileByteCounts 145 SHORT|LONG TilesPerImage InkSet 14C SHORT 1 InkNames 14D ASCII # noqa: E501 NumberOfInks 14E SHORT 1 DotRange 150 BYTE|SHORT 2|2*NumberOfInks TargetPrinter 151 ASCII any ExtraSamples 152 BYTE SampleFormat 153 SHORT SamplesPerPixel SMinSampleValue 154 Any SamplesPerPixel SMaxSampleValue 155 Any SamplesPerPixel TransferRange 156 SHORT 6 JPEGProc 200 SHORT 1 JPEGInterchangeFormat 201 LONG 1 JPEGInterchangeFormatLength 202 LONG 1 JPEGRestartInterval 203 SHORT 1 JPEGLosslessPredictos 205 SHORT SamplesPerPixel JPEGPointTransforms 206 SHORT SamplesPerPixel JPEGQTables 207 LONG SamplesPerPixel JPEGDCTables 208 LONG SamplesPerPixel JPEGACTables 209 LONG SamplesPerPixel YCbCrCoefficients 211 RATIONAL 3 YCbCrSubSampling 212 SHORT 2 YCbCrPositioning 213 SHORT 1 ReferenceBlackWhite 214 LONG 2*SamplesPerPixel Copyright 8298 ASCII Any # non-standard tags: CZ_LSMInfo 866C CZ_LSM # EXIF tags, see # http://www.awaresystems.be/imaging/tiff/tifftags/privateifd/exif.html EXIF_IFDOffset 8769 SHORT 1 EXIF_ExposureTime 829a RATIONAL 1 EXIF_FNumber 829d RATIONAL 1 EXIF_ExposureProgram 8822 SHORT 1 EXIF_SpectralSensitivity 8824 ASCII EXIF_ISOSpeedRatings 8827 SHORT 1 EXIF_OECF 8828 UNDEFINED EXIF_ExifVersion 9000 UNDEFINED 4 EXIF_DateTimeOriginal 9003 ASCII EXIF_DateTimeDigitized 9004 ASCII EXIF_ComponentsConfiguration 9101 UNDEFINED 4 EXIF_CompressedBitsPerPixel 9102 RATIONAL 1 EXIF_ShutterSpeedValue 9201 SRATIONAL 1 EXIF_ApertureValue 9202 RATIONAL 1 EXIF_BrightnessValue 9203 SRATIONAL 1 EXIF_ExposureBiasValue 9204 SRATIONAL 1 EXIF_MaxApertureValue 9205 RATIONAL 1 EXIF_SubjectDistance 9206 RATIONAL 1 EXIF_MeteringMode 9207 SHORT 1 EXIF_LightSource 9208 SHORT 1 EXIF_Flash 9209 SHORT 1 EXIF_FocalLength 920a RATIONAL 1 EXIF_SubjectArea 9214 SHORT 2|3|4 EXIF_MakerNote 927c UNDEFINED EXIF_UserComment 9286 UNDEFINED EXIF_SubsecTime 9290 ASCII EXIF_SubsecTimeOriginal 9291 ASCII EXIF_SubsecTimeDigitized 9292 ASCII EXIF_FlashpixVersion a000 UNDEFINED 4 EXIF_ColorSpace a001 SHORT 1 EXIF_PixelXDimension a002 SHORT!LONG 1 EXIF_PixelYDimension a003 SHORT!LONG 1 EXIF_RelatedSoundFile a004 ASCII 13 EXIF_FlashEnergy a20b RATIONAL 1 EXIF_SpatialFrequencyResponse a20c UNDEFINED EXIF_FocalPlaneXResolution a20e RATIONAL 1 EXIF_FocalPlaneYResolution a20f RATIONAL 1 EXIF_FocalPlaneResolutionUnit a210 SHORT 1 EXIF_SubjectLocation a214 SHORT 2 EXIF_ExposureIndex a215 RATIONAL 1 EXIF_SensingMethod a217 SHORT 1 EXIF_FileSource a300 UNDEFINED 1 EXIF_SceneType a301 UNDEFINED 1 EXIF_CFAPattern a302 UNDEFINED EXIF_CustomRendered a401 SHORT 1 EXIF_ExposureMode a402 SHORT 1 EXIF_WhiteBalance a403 SHORT 1 EXIF_DigitalZoomRatio a404 RATIONAL 1 EXIF_FocalLengthIn35mmFilm a405 SHORT 1 EXIF_SceneCaptureType a406 SHORT 1 EXIF_GainControl a407 SHORT 1 EXIF_Contrast a408 SHORT 1 EXIF_Saturation a409 SHORT 1 EXIF_Sharpness a40a SHORT 1 EXIF_DeviceSettingDescription a40b UNDEFINED EXIF_SubjectDistanceRange a40c SHORT 1 EXIF_ImageUniqueID a420 ASCII 33 ''' default_tag_values = dict(BitsPerSample=8, SampleFormat=1, RowsPerStrip=2**32 - 1, SamplesPerPixel=1, ExtraSamples=None, PlanarConfiguration=1, Compression=1, Predictor=1, NewSubfileType=0, Orientation=1, MaxSampleValue=None, MinSampleValue=None, DateTime=None, Artist=None, HostComputer=None, Software=None, ImageDescription=None, DocumentName=None, ResolutionUnit=2, XResolution=1, YResolution=1, FillOrder=1, XPosition=None, YPosition=None, Make=None, Model=None, Copyright=None,) rational = numpy.dtype([('numer', numpy.uint32), ('denom', numpy.uint32)]) srational = numpy.dtype([('numer', numpy.int32), ('denom', numpy.int32)]) type2name = {1: 'BYTE', 2: 'ASCII', 3: 'SHORT', 4: 'LONG', 5: 'RATIONAL', # two longs, lsm uses it for float64 6: 'SBYTE', 7: 'UNDEFINED', 8: 'SSHORT', 9: 'SLONG', 10: 'SRATIONAL', 11: 'FLOAT', 12: 'DOUBLE', } name2type = dict((v, k) for k, v in list(type2name.items())) name2type['SHORT|LONG'] = name2type['LONG'] name2type['LONG|SHORT'] = name2type['LONG'] type2bytes = {1: 1, 2: 1, 3: 2, 4: 4, 5: 8, 6: 1, 7: 1, 8: 2, 9: 4, 10: 8, 11: 4, 12: 8} type2dtype = {1: numpy.uint8, 2: numpy.uint8, 3: numpy.uint16, 4: numpy.uint32, 5: rational, 6: numpy.int8, 8: numpy.int16, 9: numpy.int32, 10: srational, 11: numpy.float32, 12: numpy.float64} tag_value2name = {} tag_name2value = {} tag_value2type = {} for line in tag_info.split('\n'): if not line or line.startswith('#'): continue if line[0] == ' ': pass else: n, h, t = line.split()[:3] h = eval('0x' + h) tag_value2name[h] = n tag_value2type[h] = t tag_name2value[n] = h sample_format_map = {1: 'uint', 2: 'int', 3: 'float', None: 'uint', 6: 'complex'} class NumpyDTypes: def get_dtype(self, sample_format, bits_per_sample): format = sample_format_map[sample_format] dtypename = '%s%s' % (format, bits_per_sample) return getattr(self, dtypename) class LittleEndianNumpyDTypes(NumpyDTypes): uint8 = numpy.dtype('u1') uint16 = numpy.dtype('>u2') uint32 = numpy.dtype('>u4') uint64 = numpy.dtype('>u8') int8 = numpy.dtype('>i1') int16 = numpy.dtype('>i2') int32 = numpy.dtype('>i4') int64 = numpy.dtype('>i8') float32 = numpy.dtype('>f4') float64 = numpy.dtype('>f8') complex64 = numpy.dtype('>c8') complex128 = numpy.dtype('>c16') @property def type2dt(self): return dict((k, numpy.dtype(v).newbyteorder('>')) for k, v in list(type2dtype.items())) BigEndianNumpyDTypes = BigEndianNumpyDTypes()