我正在尝试从一堆 .jpg 图像中创建图像马赛克。这些图像都有 EXIF 标头，看起来像这样：
Driver: JPEG/JPEG JFIF
Files: IMG_3290.JPG
Size is 4000, 3000
Coordinate System is `'
Metadata:
EXIF_ApertureValue=(3.625)
EXIF_ColorSpace=1
EXIF_ComponentsConfiguration=0x1 0x2 0x3 00
EXIF_CompressedBitsPerPixel=(5)
EXIF_CustomRendered=0
EXIF_DateTime=2015:09:09 15:27:28
EXIF_DateTimeDigitized=2015:09:09 15:27:28
EXIF_DateTimeOriginal=2015:09:09 15:27:28
EXIF_DigitalZoomRatio=(1)
EXIF_ExifVersion=0230
EXIF_ExposureBiasValue=(0)
EXIF_ExposureMode=0
EXIF_ExposureTime=(0.0005)
EXIF_FileSource=0x3
EXIF_Flash=16
EXIF_FlashpixVersion=0100
EXIF_FNumber=(3.5)
EXIF_FocalLength=(4.5)
EXIF_FocalPlaneResolutionUnit=2
EXIF_FocalPlaneXResolution=(16393.4)
EXIF_FocalPlaneYResolution=(16393.4)
EXIF_GPSAltitude=(91.8)
EXIF_GPSAltitudeRef=00
EXIF_GPSDateStamp=2015:09:09
EXIF_GPSLatitude=(45) (18) (3.564)
EXIF_GPSLatitudeRef=N
EXIF_GPSLongitude=(19) (48) (19.842)
EXIF_GPSLongitudeRef=E
EXIF_GPSMapDatum=WGS-84
EXIF_GPSStatus=A
EXIF_GPSTimeStamp=(14) (27) (29)
EXIF_GPSVersionID=0x2 0x3 00 00
EXIF_ImageDescription=
EXIF_Interoperability_Index=R98
EXIF_Interoperability_Version=0x30 0x31 0x30 0x30
EXIF_ISOSpeedRatings=800
EXIF_Make=Canon
EXIF_MakerNote=
EXIF_MaxApertureValue=(3.625)
EXIF_MeteringMode=5
EXIF_Model=Canon PowerShot SX280 HS
EXIF_Orientation=1
EXIF_PixelXDimension=4000
EXIF_PixelYDimension=3000
EXIF_Related_Image_Length=3000
EXIF_Related_Image_Width=4000
EXIF_ResolutionUnit=2
EXIF_SceneCaptureType=0
EXIF_SensingMethod=2
EXIF_ShutterSpeedValue=(10.9688)
EXIF_UserComment=
EXIF_WhiteBalance=1
EXIF_XResolution=(180)
EXIF_YCbCrPositioning=2
EXIF_YResolution=(180)
Image Structure Metadata:
COMPRESSION=JPEG
INTERLEAVE=PIXEL
SOURCE_COLOR_SPACE=YCbCr
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 3000.0)
Upper Right ( 4000.0, 0.0)
Lower Right ( 4000.0, 3000.0)
Center ( 2000.0, 1500.0)
Band 1 Block=4000x1 Type=Byte, ColorInterp=Red
Overviews: 2000x1500, 1000x750, 500x375
Image Structure Metadata:
COMPRESSION=JPEG
Band 2 Block=4000x1 Type=Byte, ColorInterp=Green
Overviews: 2000x1500, 1000x750, 500x375
Image Structure Metadata:
COMPRESSION=JPEG
Band 3 Block=4000x1 Type=Byte, ColorInterp=Blue
Overviews: 2000x1500, 1000x750, 500x375
Image Structure Metadata:
COMPRESSION=JPEG
所以在geoserver的用户手册中，它说使用geotiff或jpg伴随.jgw（世界文件）。我一直在尝试使用 gdal_translate 创建 geotiff 图像：
>gdal_translate -a_srs EPSG:4326 -of GTiff IMG_3290.JPG IMG_3290.tiff
现在由于 gdalinfo 命令，我得到：
Coordinate System is:
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4326"]]
在 gdalinfo 的 geotiff 图像上，我得到了更详细的地理参考数据：
Coordinate System is:
PROJCS["WGS 84 / UTM zone 35N",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",27],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AUTHORITY["EPSG","32635"]]
Origin = (510729.434746513376012,4362942.855643210932612)
Pixel Size = (1.000000000000000,-1.000000000000000)
Metadata:
AREA_OR_POINT=Area
Image Structure Metadata:
COMPRESSION=PACKBITS
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 510729.435, 4362942.856) ( 27d 7'28.71"E, 39d24'57.38"N)
Lower Left ( 510729.435, 4347929.856) ( 27d 7'27.84"E, 39d16'50.38"N)
Upper Right ( 527866.435, 4362942.856) ( 27d19'25.38"E, 39d24'56.00"N)
Lower Right ( 527866.435, 4347929.856) ( 27d19'23.13"E, 39d16'49.00"N)
Center ( 519297.935, 4355436.356) ( 27d13'26.27"E, 39d20'53.34"N)
那么最后有没有办法将带有exif标头的jpg转换为geotiff图像？还有我怎样才能创建 .jgw 文件了 jpg 图像的 exif 标题，就像我在这里展示的那样？