我正在努力将分辨率为58808x30323的GeoTiff(BigTiff)切成0.1度到0.1度的碎片,这样我们就可以将碎片发送到移动设备了。我正在用Java实现转换器。图像代表DEM - Ditigal elavation模型(10米)
我拥有的和我所知道的:
问题和疑问:
图片元数据
FileSize 3249 MB
FileType BTF
FileTypeExtension btf
MIMEType mage/x-tiff-bigMIMEType
ImageWidth 58808
ImageHeight 30323
BitsPerSample 32
Compression LZW
PhotometricInterpretation BlackIsZero
SamplesPerPixel 1
PlanarConfiguration Chunky
Predictor None
TileWidth 128
TileLength 128
SampleFormat Float
PixelScale 10 10 0
ModelTiePoint 0 0 0 106549.267203769 576922.512073626 0
TileOffsets // there is 109020 offset numbers
TileByteCounts // there is 109020 byteCount numbers
GeoTiffDirectory
1 1 0 20 // Header
1024 0 1 1 // ModelTypeProjected -> 1 /* Projection Coordinate System */
1025 0 1 1 // RasterPixelIsPoint -> 2
1026 34737 31 0 // GTCitationGeoKey
2048 0 1 32767 // GeographicTypeGeoKey
2049 34737 63 31 // GeogCitationGeoKey
2050 0 1 6312 // Geodetic Datum Codes -> Datum_Militar_Geographische_Institut
2054 0 1 9102 // -> Angular_Degree = 9102
2057 34736 1 7 // GeogLinearUnits
2059 34736 1 6 // GeogInvFlatteningGeoKey
2061 34736 1 8 // GeogPrimeMeridianLongGeoKey
3072 0 1 32767 // ProjectedCSTypeGeoKey -> User defined
3074 0 1 32767 // ProjectionGeoKey -> User defined
3075 0 1 8 // ProjCoordTransGeoKey -> CT_LambertConfConic_2SP
3076 0 1 9001 // ProjLinearUnitsGeoKey -> Linear meter
3078 34736 1 2 // ProjStdParallel1GeoKey = 3078 /* GeogAngularUnit */
3079 34736 1 3 // ProjStdParallel2GeoKey = 3079 /* GeogAngularUnit */
3084 34736 1 1 // ProjFalseOriginLongGeoKey = 3084 /* GeogAngularUnit */
3085 34736 1 0 // ProjFalseOriginLatGeoKey = 3085 /* GeogAngularUnit */
3086 34736 1 4 // ProjFalseOriginEastingGeoKey = 3086 /* ProjLinearUnits */
3087 34736 1 5 //ProjFalseOriginNorthingGeoKey = 3087 /* ProjLinearUnits */
0 0 0 0II // End
GeoTiffDoubleParams 47.5 13.3333333333333 46 49 400000 400000 299.1528128 6377397.155 0II
GeoTiffAsciiParams PCS Name = MGI_Austria_Lambert|GCS Name = GCS_MGI|Ellipsoid = Bessel_1841|Primem = Greenwich||
GDALNoData -3.4028230607370965e+038
ImageSize 58808x30323
Megapixels 1783.2
tiff文件也有tfw文件:
10.0000000000
0.0000000000
0.0000000000
-10.0000000000
106554.2672037689
576917.5120736258