Question

我正在尝试用一堆.jpg图像创建图像拼接。这些图像都有EXIF标题，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

因此，在geoserver的用户手册中，它表示使用带有.jgw（世界文件）的geotiff或jpg。我一直在尝试使用gdal_translate创建地理图像：

 >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上的geotiff图像中，我得到了更详细的地理配准数据：

   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)

所以最终有没有办法将带有exif标头的jpg转换为geotiff图像？还有我如何使用像我在这里展示的exif标题一样用jpg图像创建.jgw文件？

Answer 1

这个exif标题中的信息似乎不足以创建真正的ortophoto，因为有关图像旋转的信息不存在。

Answer 2

Exif Specification提供以下标记

0x0010  16  GPSInfo Exif.GPSInfo.GPSImgDirectionRef Ascii   Indicates the reference for giving the direction of the image when it is captured. "T" denotes true direction and "M" is magnetic direction.
0x0011  17  GPSInfo Exif.GPSInfo.GPSImgDirection    Rational    Indicates the direction of the image when it was captured. The range of values is from 0.00 to 359.99.

如果您的Drone软件可以在拍摄图像时填充，您将拥有所需的

我无法在GeoServer中创建图像拼接（JPG图像格式）

2 个答案: