VS2010 c#利用GDAL创建金字塔文件（金字塔文件包含在文件内部）

源代码下载地址：http://download.csdn.net/detail/ivanljf/5832879

 

1、首先要配置工程环境，将编译好的9个dll文件放在debug目录下，将带有csharp的四个dll添加到引用；如下图：

2.添加命名空间：using OSGeo.GDAL

3、贴出代码：

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OSGeo.GDAL;//添加该命名空间
namespace Official_BuildOverviews
{
   class Program
    {
        public static void usage()
        {
            Console.WriteLine("usage: Official_BuildOverviews {GDAL dataet name} {resampling} {level1} {level2} ...");
            Console.WriteLine("example: gdaloverviews sample.tif \"NEAREST\" 2 4");
            System.Environment.Exit(-1);
        }
        static void Main(string[] args)
        {
            if (args.Length <= 2)
                usage();
            Console.WriteLine("");
            try
            {
                Gdal.AllRegister();
                Dataset ds = Gdal.Open(args[0], Access.GA_Update);
                if (ds == null)
                {
                    Console.WriteLine("Can't open" + args[0]);
                    System.Environment.Exit(-1);
                }
                Console.WriteLine("Raster dataset parameters:");
                Console.WriteLine("  Projection:" + ds.GetProjectionRef());
                Console.WriteLine("  RasterCount:" + ds.RasterCount);
                Console.WriteLine("  RasterSize(" + ds.RasterXSize + "," + ds.RasterYSize + ")");

                int[] levels = new int[args.Length - 2];//减去前两个参数，该数组存储级别数（2,4,8,16...）
                Console.WriteLine(levels.Length);

                for (int i = 2; i < args.Length; i++)
                {
                    levels[i - 2] = int.Parse(args[i]);//从第三个参数开始存储
                }
                if (ds.BuildOverviews(args[1], levels, new Gdal.GDALProgressFuncDelegate(ProgressFunc), "Sample Data") != (int)CPLErr.CE_None)
                {
                    Console.WriteLine("The BuildOverviews operation doesn't work");
                    System.Environment.Exit(-1);
                }

                for (int iBand = 1; iBand <= ds.RasterCount;iBand++ )
                {
                    Band band = ds.GetRasterBand(iBand);
                    Console.WriteLine("Band " + iBand + ":");
                    Console.WriteLine("  DataType: " + band.DataType);
                    Console.WriteLine("  Size (" + band.XSize + "," + band.YSize + ")");
                    Console.WriteLine("  PaletteInterp: " + band.GetRasterColorInterpretation().ToString());

                    for (int iOver = 0; iOver < band.GetOverviewCount();iOver++ )
                    {
                        Band over = band.GetOverview(iOver);
                        Console.WriteLine("    OverView " + iOver + ":");
                        Console.WriteLine("   DataType:" + over.DataType);
                        Console.WriteLine("         Size (" + over.XSize + "," + over.YSize + ")");
                        Console.WriteLine("         PaletteInterp: " + over.GetRasterColorInterpretation().ToString());
                    }
                }
                Console.WriteLine("Completed.");
                Console.WriteLine("Use:  gdalread " + args[0] + " outfile.png [overview] to extract a particular overview!");
            }

            catch (System.Exception ex)
            {
                Console.WriteLine("Application error: " + ex.Message);
            }
        }
        public static int ProgressFunc(double Complete, IntPtr Message, IntPtr Data)//和委托参数一致 public delegate int GDALProgressFuncDelegate(double Complete, IntPtr Message, IntPtr Data);
        {
            Console.Write("Processing ..." + Complete * 100 + "% Completed.");
            if (Message != IntPtr.Zero)
            {
                Console.Write("Message:" + System.Runtime.InteropServices.Marshal.PtrToStringAnsi(Message));
            }
            if (Data != IntPtr.Zero)
            {
                Console.Write("Data:" + System.Runtime.InteropServices.Marshal.PtrToStringAnsi(Data));
            }
            Console.WriteLine("");
            return 1;
        }
    }
}

注：该程序代码是命令行参数程序，若想调试该程序，需要将传递的参数提前设置好：

 

 

源代码下载地址：http://download.csdn.net/detail/ivanljf/5832879