private IRasterDataProvider CreateMosaicRaster(string filename, GeoInfo geoHeader, int bandCount, ISpatialReference spatialRef, string mosiacAngle)
{
IRasterDataProvider outRaster = null;
if (File.Exists(filename))
{
outRaster = GeoDataDriver.Open(filename, enumDataProviderAccess.Update, null) as IRasterDataProvider;
}
else
{
float resX = 0.01f;
float resY = 0.01f;
float ltX = 65;
float ltY = 60;
int width = 8000;
int height = 7000;
if (geoHeader == null)
{
return(null);
}
resX = geoHeader.ResX;
resY = geoHeader.ResY;
ltX = geoHeader.LtX;
ltY = geoHeader.LtY;
width = geoHeader.Width;
height = geoHeader.Height;
if (spatialRef == null)
{
spatialRef = SpatialReference.GetDefault();
}
string dir = Path.GetDirectoryName(filename);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
IRasterDataDriver raster = RasterDataDriver.GetDriverByName("LDF") as IRasterDataDriver;
string bandNames = "";//CreateBandNames(bandcount);
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + spatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + ltX + "," + ltY + "}:{" + resX + "," + resY + "}",
"BANDNAMES=" + bandNames
};
outRaster = raster.Create(filename, width, height, bandCount, enumDataType.UInt16, options) as RasterDataProvider;
string outSolarZenithFile = Path.ChangeExtension(filename, mosiacAngle);
using (RasterDataProvider outSolarZenithRaster = raster.Create(outSolarZenithFile, width, height, 1, enumDataType.UInt16, options) as RasterDataProvider)
{ }
}
return(outRaster);
}
/// <summary>
/// 地理数据拼接:地理坐标，投影坐标
/// 拼接输出ldf
/// 支持按高度角数据拼接,高度角数据为后缀为".SolarZenith.ldf"的附加文件，值为扩大了100倍的short类型的高度角值。
/// </summary>
/// <param name="args">
/// "D:\20131003|*_1000M.ldf" "D:\20131002\\FY3C_VIRR_1000M_global.ldf" "1,2,3" "0.01,0.01,-180,90,36000,18000" ".SensorZenith.ldf"
/// </param>
public static void Mosaic(string[] args)
{
//new ToChinaCenter().Tran();
//return;
if (args == null || args.Length != 5)
{
Console.WriteLine("输入参数错误：");
Console.WriteLine(" 指定目录[:搜索模式] 拼接后文件名 要拼接的波段(序号从1开始) 地理坐标（x分辨率,y分辨率,左上角经度,左上角纬度,宽度,高度）");
Console.WriteLine(@" 例如：D:\20131003|*_1000M.ldf D:\20131002\FY3C_VIRR_1000M_global.ldf 1,2,3 0.01,0.01,-180,90,36000,18000");
return;
}
string[] paths = args[0].Split('|');
string dir = paths[0];
if (!Directory.Exists(dir))
{
Console.WriteLine("指定目录不存在：" + dir);
return;
}
string mode = "";
if (paths.Length == 2)
{
mode = paths[1];
}
string[] files = Directory.GetFiles(dir, mode);
string outfile = args[1];
string[] bands = args[2].Split(',');
string geoString = args[3];
GeoInfo geoHeader = GeoInfo.Parse(geoString);
if (geoHeader == null)
{
Console.WriteLine("输入参数错误：" + geoString);
return;
}
if (geoHeader.ResX == 0 || geoHeader.ResY == 0)
{
Console.WriteLine("输入参数错误：" + geoString + "中分辨率解析为0");
return;
}
string mosaicAngle = args[4];
MosaicProcess c = new MosaicProcess();
c.Mosaic(files, outfile, geoHeader, bands, mosaicAngle,
(p, txt) =>
{
Console.WriteLine(string.Format("{0}% {1}", p, txt));
});
}
/// <summary>
/// 地理数据拼接:地理坐标，投影坐标
/// 拼接输出ldf
/// 支持按高度角数据拼接,高度角数据为后缀为 MosaicIdentify(输入参数) 的附加文件，值为扩大了100倍的short类型的高度角值。
/// 本拼接程序会判断是否有高度角数据： MosaicIdentify(输入参数)，如果有，则拼接时候会依据高度角的大小关系执行是否覆盖操作，如果没有，则按照有无数据执行拼接。
/// </summary>
/// <param name="rasterFiles"></param>
/// <param name="outRasterFile"></param>
/// <param name="geoHeader"></param>
/// <param name="bandMaps"></param>
/// <param name="progress"></param>
public void Mosaic(string[] rasterFiles, string outRasterFile, GeoInfo geoHeader, string[] bandMaps, string mosiacAngle, Action <int, string> progress)
{
int[] bandMap = null;
if (!GetBandMap(bandMaps, out bandMap))
{
if (progress != null)
{
progress(0, "输入参数错误，参数[要拼接的波段]不正确");
}
return;
}
if (bandMap == null || bandMap.Length == 0)
{
if (progress != null)
{
progress(0, "输入参数错误，[要拼接的波段]为空或不正确");
}
return;
}
int bandCount = bandMap.Length;
ISpatialReference spatialRef = TryFindSpatialRef(rasterFiles);
using (IRasterDataProvider outraster = CreateMosaicRaster(outRasterFile, geoHeader, bandCount, spatialRef, mosiacAngle))
{
string filename = null;
IRasterDataProvider raster = null;
string solarZenithFilename = null;
IRasterDataProvider solarZenithRaster = null;
RasterMaper outSolarZenithMap = null;// new RasterMaper(solarZenithRaster, new int[] { 1 });
string outSolarZenithFile = Path.ChangeExtension(outRasterFile, mosiacAngle);
IRasterDataProvider outSolarZenithRster = null;
try
{
for (int f = 0; f < rasterFiles.Length; f++)
{
filename = rasterFiles[f];
solarZenithFilename = Path.ChangeExtension(filename, mosiacAngle);
if (progress != null)
{
progress((int)((f + 1) * 100f / rasterFiles.Length), string.Format("{0}/{1}", f + 1, rasterFiles.Length));
}
try
{
raster = GeoDataDriver.Open(filename) as IRasterDataProvider;
if (raster == null)
{
continue;
}
if (File.Exists(outSolarZenithFile))
{
outSolarZenithRster = GeoDataDriver.Open(outSolarZenithFile, enumDataProviderAccess.Update, null) as IRasterDataProvider;
outSolarZenithMap = new RasterMaper(outSolarZenithRster, new int[] { 1 });
}
RasterMaper rmSz = null;
if (File.Exists(solarZenithFilename))
{
solarZenithRaster = GeoDataDriver.Open(solarZenithFilename) as IRasterDataProvider;
rmSz = new RasterMaper(solarZenithRaster, new int[] { 1 });
}
RasterMaper rmin = new RasterMaper(raster, bandMap);
RasterMaper rmout = new RasterMaper(outraster, bandMap);
RasterProcessModel <short, short> rp = new RasterProcessModel <short, short>();
RasterMaper[] rmIns, rmOuts;
if (rmSz != null)
{
rmIns = new RasterMaper[] { rmin, rmSz }
}
;
else
{
rmIns = new RasterMaper[] { rmin }
};
if (outSolarZenithMap != null)
{
rmOuts = new RasterMaper[] { rmout, outSolarZenithMap }
}
;
else
{
rmOuts = new RasterMaper[] { rmout }
};
rp.SetRaster(rmIns, rmOuts);
rp.RegisterCalcModel(new RasterCalcHandlerFun <short, short>((rasterVistor, target, map) =>
{
if (rasterVistor[0] == null || rasterVistor[0].RasterBandsData.Length == 0)
{
return(false);
}
if (target[0] == null || target[0].RasterBandsData[0].Length == 0)
{
return(false);
}
if (rasterVistor[0].RasterBandsData[0] == null)
{
return(false);
}
//目标角度数据存在，源角度数据不存在，不做拼接
if (target.Length != 1 && rasterVistor.Length == 1)
{
return(false);
}
bool isUpdate = false;
//不使用天顶角数据,补数据
if (target.Length == 1 || rasterVistor.Length == 1)
{
for (int i = 0; i < target[0].RasterBandsData[0].Length; i++)
{
if (rasterVistor[0].RasterBandsData[0][i] == 0)//空值
{
continue;
}
if (target[0].RasterBandsData[0][i] == 0)
{
isUpdate = true;
for (int b = 0; b < bandCount; b++)
{
target[0].RasterBandsData[b][i] = rasterVistor[0].RasterBandsData[b][i];
}
}
}
}
else
{
for (int i = 0; i < target[0].RasterBandsData[0].Length; i++)
{
if (rasterVistor[0].RasterBandsData[0][i] == 0)//空值
{
continue;
}
/*
* 太阳高度表示昼夜状态
* 在晨昏线上的各地太阳高度为0 °，表示正经历昼夜更替；
* 在昼半球上的各地太阳高度大于0°，表示白昼；
* 在夜半球上的各地太阳高度小于0°，表示黑夜。
* 日出、日落时，太阳高度为0
* 即：
* 0°附近在日落或日出
* -90°和0°之间在晚上
* 上午太阳高度逐渐增大，最大时为太阳上中天，即是正午，午后太阳高度又逐渐缩小。
*/
//（高度角 = 90 - 天顶角）
//高度角有效范围：
//这里读取的是SolarZenith太阳天顶，有效范围0-180。
//天顶角0-90为白天，小值为接近中午
if (rasterVistor.Length == 1 || rasterVistor[1] == null || rasterVistor[1].RasterBandsData[0] == null ||
target.Length == 1 || target[1] == null)
{
if (target[0].RasterBandsData[0][i] == 0)//如果没有角度数据，则采取补数据的方式（即不覆盖已有数据）
{
isUpdate = true;
for (int b = 0; b < bandCount; b++)//拼接所有通道数据
{
target[0].RasterBandsData[b][i] = rasterVistor[0].RasterBandsData[b][i];
}
}
}
else if (rasterVistor[1].RasterBandsData[0][i] > 9000 || rasterVistor[1].RasterBandsData[0][i] < 0)//原高度角为夜晚或者不合理
{
continue;
}
else if (target[1].RasterBandsData[0][i] == 0)
{
isUpdate = true;
for (int b = 0; b < bandCount; b++)
{
target[0].RasterBandsData[b][i] = rasterVistor[0].RasterBandsData[b][i];
}
//更新目标高度角数据
target[1].RasterBandsData[0][i] = rasterVistor[1].RasterBandsData[0][i];
}
else if (rasterVistor[1].RasterBandsData[0][i] < target[1].RasterBandsData[0][i])//取高度角小的
{
isUpdate = true;
for (int b = 0; b < bandCount; b++)
{
target[0].RasterBandsData[b][i] = rasterVistor[0].RasterBandsData[b][i];
}
//更新目标高度角数据
target[1].RasterBandsData[0][i] = rasterVistor[1].RasterBandsData[0][i];
}
}
}
if (isUpdate)
{
return(true);
}
else
{
return(false);
}
}
));
int rowCount = rp.CalcRowCount();
rp.Excute(0, rowCount);
}
finally
{
if (raster != null)
{
raster.Dispose();
raster = null;
}
if (outSolarZenithRster != null)
{
outSolarZenithRster.Dispose();
outSolarZenithRster = null;
}
}
}
}
finally
{
if (outSolarZenithRster != null)
{
outSolarZenithRster.Dispose();
outSolarZenithRster = null;
}
}
}
}