C# gdal读取栅格rgb

以下是使用C# gdal读取栅格rgb的示例代码：

using OSGeo.GDAL;

// 注册所有的驱动
Gdal.AllRegister();

// 打开栅格数据
Dataset ds = Gdal.Open("path/to/raster", Access.GA_ReadOnly);

// 获取栅格数据的宽度和高度
int width = ds.RasterXSize;
int height = ds.RasterYSize;

// 获取栅格数据的波段数
int bandCount = ds.RasterCount;

// 读取栅格数据的RGB值
Band redBand = ds.GetRasterBand(1);
Band greenBand = ds.GetRasterBand(2);
Band blueBand = ds.GetRasterBand(3);

byte[] redValues = new byte[width * height];
byte[] greenValues = new byte[width * height];
byte[] blueValues = new byte[width * height];

redBand.ReadRaster(0, 0, width, height, redValues, width, height, 0, 0);
greenBand.ReadRaster(0, 0, width, height, greenValues, width, height, 0, 0);
blueBand.ReadRaster(0, 0, width, height, blueValues, width, height, 0, 0);

// 将RGB值转换为颜色
Color[] colors = new Color[width * height];
for (int i = 0; i < width * height; i++)
{
    colors[i] = Color.FromArgb(redValues[i], greenValues[i], blueValues[i]);
}