GDAL获取遥感图像基本信息

 

GDAL库中的枚举类型定义位于gdal.h文件中。 其中包含了GDAL库定义的数据类型，GDALDataType

enum GDALDataType
Pixel data types
Enumerator:
GDT_Unknown 	Unknown or unspecified type
GDT_Byte 	Eight bit unsigned integer
GDT_UInt16 	Sixteen bit unsigned integer
GDT_Int16 	Sixteen bit signed integer
GDT_UInt32 	Thirty two bit unsigned integer
GDT_Int32 	Thirty two bit signed integer
GDT_Float32 	Thirty two bit floating point
GDT_Float64 	Sixty four bit floating point
GDT_CInt16 	Complex Int16
GDT_CInt32 	Complex Int32
GDT_CFloat32 	Complex Float32
GDT_CFloat64 	Complex Float64
 

 

GDAL支持的数据格式完整见:GDAL Raster Formats。主要的数据类型如下：

GeoTIFF (GTiff)
Geosoft GXF (GXF)
Erdas Imagine (HFA)
CEOS (CEOS)
ELAS (ELAS)
Arc/Info Binary Grid (AIGrid)
SDTS Raster DEM (SDTS)
OGDI (OGDI)
ESRI Labelled BIL (EHdr)
PCI .aux Labelled Raw Raster (PAux)
HDF4 Hierachal Data Format Release 4
HDF5 Hierachal Data Format Release 5
GSAG Golden Software ASCII Grid
GSBG Golden Software Binary Grid

通过GDAL读取遥感影像的基本信息：

    GDALAllRegister(); //注册驱动
    string file;
    file = path + name;
    GDALDataset* dataset_Origin = (GDALDataset*)GDALOpen(file.c_str(),GA_ReadOnly);//打开数据
    const int rasterXSize = dataset_Origin->GetRasterXSize();//数据X宽度
    const int rasterYSize = dataset_Origin->GetRasterYSize();//数据Y宽度
    const int rasterBandCount = dataset_Origin->GetRasterCount(); //数据波段数
    string descrip = dataset_Origin->GetDriver()->GetDescription();//数据格式
    double rasterGeoTransform[6];
    dataset_Origin->GetGeoTransform(rasterGeoTransform);//仿射参数
    const string projectionRef_Origin = dataset_Origin->GetProjectionRef();//空间参考信息