private void _DatasetPng2File(Dataset ds, string sFileName)
{
OSGeo.GDAL.Driver drv = Gdal.GetDriverByName("PNG");
string[] aryOption = { "" };
Dataset dsOut = drv.CreateCopy(sFileName, ds, 0, aryOption, null, null);
dsOut.FlushCache(); dsOut.Dispose();
}
public bool LatLon_TiffToUTM_Tiff(string inPut, string outPut, int band = 1)
{
FileInfo inPutFile = new FileInfo(inPut);
//입력 파일이 없다면 종료
if (!inPutFile.Exists)
{
return(false);
}
else
{
//입력 파일이 tif / tiff 파일이 아니라면 종료
if (inPutFile.Extension != ".tif" && inPutFile.Extension != ".tiff")
{
return(false);
}
}
#region Create Tiff
Gdal.AllRegister();
Dataset dataset = Gdal.Open(inPut, Access.GA_ReadOnly);
//SpatialReference dstt_srs = new SpatialReference("");
//dstt_srs.SetFromUserInput("+proj=utm +zone=21 +ellps=WGS84 +datum=WGS84 +units=m +no_defs");
string t_srs_wkt = "GEOGCS[\"WGS84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS84\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.01745329251994328]]";
//dstt_srs.ExportToWkt(out t_srs_wkt);
//SpatialReference src_srs = new SpatialReference("");
//src_srs.SetFromUserInput("+proj=longlat");
string s_srs_wkt = dataset.GetProjectionRef();
//src_srs.ExportToWkt(out s_srs_wkt);
Dataset dswarp = Gdal.AutoCreateWarpedVRT(dataset, s_srs_wkt, t_srs_wkt, ResampleAlg.GRA_NearestNeighbour, 0.125);
string[] options = null;
OSGeo.GDAL.Driver srcDrv = Gdal.GetDriverByName("GTiff");
Dataset dstDs = srcDrv.CreateCopy(outPut, dswarp, 0, options, null, null);
//dstDs.SetProjection(dataset.GetProjection());
//double[] geot = new double[6];
//dataset.GetGeoTransform(geot);
//dstDs.SetGeoTransform(geot);
dstDs.FlushCache();
dstDs.Dispose();
srcDrv.Dispose();
#endregion
return(true);
}
private Dataset multi(Dataset oriDs, Dataset maskDs, string outPath)
{
int blockSize = 10240;
int xSize = oriDs.RasterXSize;
int leftXSize = xSize;
int xOffset = 0;
int ySize = oriDs.RasterYSize;
int leftYSize = ySize;
int yOffset = 0;
progressInfo.SubTitle = "正在裁剪";
while (leftYSize > 0)
{
int readYSize = (leftYSize > blockSize) ? blockSize : leftYSize;
leftYSize = leftYSize - readYSize;
xOffset = 0;
leftXSize = xSize;
while (leftXSize > 0)
{
int readXSize = (leftXSize > blockSize) ? blockSize : leftXSize;
leftXSize = leftXSize - readXSize;
int totalSize = readXSize * readYSize;
byte[] oriData = new byte[totalSize];
byte[] maskData = new byte[totalSize];
oriDs.ReadRaster(xOffset, yOffset, readXSize, readYSize, oriData, readXSize, readYSize, 1, null, 0, 0, 0);
maskDs.ReadRaster(xOffset, yOffset, readXSize, readYSize, maskData, readXSize, readYSize, 1, null, 0, 0, 0);
for (int i = 0; i < totalSize; i++)
{
oriData[i] = (byte)(oriData[i] * maskData[i]);
}
oriDs.WriteRaster(xOffset, yOffset, readXSize, readYSize, oriData, readXSize, readYSize, 1, null, 0, 0, 0);
xOffset = xOffset + readXSize;
}
yOffset = yOffset + readYSize;
}
progressInfo.SubTitle = "写入影像";
OSGeo.GDAL.Driver driver = Gdal.GetDriverByName("GTiff");
string[] options = new string[]
{
"-co", "COMPRESS=LZW",
"-co", "TILED=YES"
};
return(driver.CreateCopy(outPath, oriDs, 0, options, gdalProgressFunc, null));
}
/// <summary>
/// Brovey变换融合。融合前会将多光谱数据集的每一波段与全色数据集做直方图匹配。
/// </summary>
/// <param name="PanDS">全色数据集。</param>
/// <param name="MSDS">多光谱数据集</param>
/// <param name="PanCumu">全色数据集的累积概率表。</param>
/// <param name="MSCumu">多光谱数据集的累积概率表。</param>
/// <param name="MSBandList">多光谱数据集的波段组合。</param>
/// <param name="OutDataType">输出数据类型。</param>
/// <param name="OutPath">输出路径。</param>
/// <returns>返回操作成功或失败。</returns>
public static bool Brovey(OSGeo.GDAL.Dataset PanDS, OSGeo.GDAL.Dataset MSDS, double[][] PanCumu, double[][] MSCumu, int[] MSBandList, OSGeo.GDAL.DataType OutDataType, string OutPath)
{
try
{
if (PanDS == null)
{
throw new ArgumentNullException("输入的全色数据集为空。");
}
if (PanDS.RasterCount > 1)
{
throw new RankException("全色数据集波段大于1。");
}
if (MSDS == null)
{
throw new ArgumentNullException("输入的多光谱数据集为空。");
}
if (String.IsNullOrWhiteSpace(OutPath.Trim()))
{
throw new ArgumentNullException("输出路径为空或非法。");
}
OSGeo.GDAL.Driver Dri = OSGeo.GDAL.Gdal.GetDriverByName("Gtiff");
if (Dri == null)
{
throw new Exception("无法获取GDAL Driver。");
}
int panWidth = PanDS.RasterXSize;
int panHeight = PanDS.RasterYSize;
int msWidth = MSDS.RasterXSize;
int msHeight = MSDS.RasterYSize;
//int rat = (int)Math.Ceiling((double)panHeight / msHeight);
if (panWidth < msWidth)
{
throw new RankException("全色数据集宽度小于多光谱数据集宽度。");
}
if (panHeight < msHeight)
{
throw new RankException("全色数据集高度小于多光谱数据集高度。");
}
//if (rat <= 0)
// throw new ArgumentOutOfRangeException("全色高度：多光谱高度小于1。");
FrmProgress FP = new FrmProgress()
{
Text = "正在进行Brovey融合...",
};
Thread t = new Thread(() =>
{
FP.ShowDialog();
});
t.SetApartmentState(ApartmentState.STA);
t.Start();
#region 预处理
//创建临时文件，进行直方图匹配。
string HisMatFileName = Tools.Common.GetTempFileName();
OSGeo.GDAL.Dataset MatchingDS = Dri.CreateCopy(HisMatFileName, MSDS, 0, null, null, null);
FP.Output("已创建直方图匹配临时文件\"" + HisMatFileName + "\"");
for (int band = 1; band <= MSDS.RasterCount; band++)
{
FP.Output("正在进行直方图匹配(" + band.ToString() + "/" + MSDS.RasterCount.ToString() + ")...");
Band b = Tools.BaseProcess.HistogramMatching(MSDS.GetRasterBand(band), PanDS.GetRasterBand(1), MSCumu[band - 1], PanCumu[0], OutDataType);
if (b == null)
{
throw new ArgumentNullException("直方图匹配返回波段为空。");
}
for (int row = 0; row < b.YSize; row++)
{
double[] tmp = new double[b.XSize];
b.ReadRaster(0, row, b.XSize, 1, tmp, b.XSize, 1, 0, 0);
MatchingDS.GetRasterBand(band).WriteRaster(0, row, MatchingDS.GetRasterBand(band).XSize, 1, tmp, MatchingDS.GetRasterBand(band).XSize, 1, 0, 0);
MatchingDS.FlushCache();
Thread.Sleep(1);
}
}
//创建临时文件，进行重采样。
double[] resamptmp;
string ResampFileName = Tools.Common.GetTempFileName();
OSGeo.GDAL.Dataset ResampDS = Dri.Create(ResampFileName, panWidth, panHeight, 3, MSDS.GetRasterBand(1).DataType, null);
FP.Output("已创建重采样临时文件\"" + ResampFileName + "\"");
//Tools.Common.CopyMetadata(PanDS, tmpDS);
//Gdal.ReprojectImage(MSDS, tmpDS, null, null, 0, 0, 0, null, null);
//将直方图匹配后的图像重采样。
for (int i = 0; i < 3; i++)
{
FP.Output("正在对直方图匹配后影像进行重采样(" + (i + 1).ToString() + "/" + "3)...");
resamptmp = new double[panWidth * panHeight];
MatchingDS.GetRasterBand(MSBandList[i]).ReadRaster(0, 0, msWidth, msHeight, resamptmp, panWidth, panHeight, 0, 0);
ResampDS.GetRasterBand(i + 1).WriteRaster(0, 0, panWidth, panHeight, resamptmp, panWidth, panHeight, 0, 0);
ResampDS.FlushCache();
Thread.Sleep(1);
if (FP.Canceled)
{
Thread.Sleep(500);
FP.Finish();
throw new OperationCanceledException("操作被用户取消。");
}
}
//释放直方图匹配图像资源。
MatchingDS.Dispose();
if (File.Exists(HisMatFileName))
{
File.Delete(HisMatFileName);
}
FP.Output("已删除直方图匹配临时文件");
#endregion
//创建输出数据集。
OSGeo.GDAL.Dataset DS = Dri.Create(OutPath, panWidth, panHeight, 3, OutDataType, null);
FP.Output("已创建输出数据集\"" + OutPath + "\"，数据类型为" + OutDataType.ToString() + "。");
Tools.Common.CopyMetadata(PanDS, DS);
double[] p;
double[][] ms;
double[] ds;
for (int row = 0; row < panHeight; row++)
{
FP.SetProgress2("正在处理", row + 1, panHeight, "行");
//将全色波段行读取进数组。
p = new double[panWidth];
PanDS.GetRasterBand(1).ReadRaster(0, row, panWidth, 1, p, panWidth, 1, 0, 0);
//将重采样后的多光谱行读取进数组。
ms = new double[3][];
ms[0] = new double[panWidth];
ms[1] = new double[panWidth];
ms[2] = new double[panWidth];
ResampDS.GetRasterBand(1).ReadRaster(0, row, panWidth, 1, ms[0], panWidth, 1, 0, 0);
ResampDS.GetRasterBand(2).ReadRaster(0, row, panWidth, 1, ms[1], panWidth, 1, 0, 0);
ResampDS.GetRasterBand(3).ReadRaster(0, row, panWidth, 1, ms[2], panWidth, 1, 0, 0);
//遍历三波段
for (int bandcount = 0; bandcount < 3; bandcount++)
{
FP.SetProgress1("正在处理", bandcount + 1, 3, "波段");
ds = new double[panWidth]; //临时数组
for (long i = 0; i < panWidth; i++)
{
ds[i] = p[i] * ms[bandcount][i] / (ms[0][i] + ms[1][i] + ms[2][i]); //Brovey公式
}
DS.GetRasterBand(bandcount + 1).WriteRaster(0, row, panWidth, 1, ds, panWidth, 1, 0, 0); //计算完后的数据写入
DS.FlushCache();
}
Thread.Sleep(1);
if (FP.Canceled)
{
Thread.Sleep(500);
FP.Finish();
throw new OperationCanceledException("操作被用户取消。");
}
}
//释放重采样图像资源。
ResampDS.Dispose();
if (File.Exists(ResampFileName))
{
File.Delete(ResampFileName);
}
FP.Output("已删除重采样临时文件");
/*一次性读取一时爽，遇到大文件爆内存。
* 一次性读取一时爽，遇到大文件爆内存。
* 一次性读取一时爽，遇到大文件爆内存。*/
//p = new double[panWidth * panHeight];
//ms = new double[3][];
//ms[0] = new double[panWidth * panHeight];
//ms[1] = new double[panWidth * panHeight];
//ms[2] = new double[panWidth * panHeight];
//PanDS.GetRasterBand(1).ReadRaster(0, 0, panWidth, panHeight, p, panWidth, panHeight, 0, 0);
//MSDS.GetRasterBand(MSBandList[0]).ReadRaster(0, 0, msWidth, msHeight, ms[0], panWidth, panHeight, 0, 0);
//MSDS.GetRasterBand(MSBandList[1]).ReadRaster(0, 0, msWidth, msHeight, ms[1], panWidth, panHeight, 0, 0);
//MSDS.GetRasterBand(MSBandList[2]).ReadRaster(0, 0, msWidth, msHeight, ms[2], panWidth, panHeight, 0, 0);
//for (int bandcount = 0; bandcount < 3; bandcount++)
//{
// ds = new double[panWidth * panHeight];
// for (int row = 0; row < panHeight; row++)
// {
// for (int col = 0; col < panWidth; col++)
// {
// ds[row * panWidth + col] = p[row * panWidth + col] * ms[bandcount][row * panWidth + col] / (ms[0][row * panWidth + col] + ms[1][row * panWidth + col] + ms[2][row * panWidth + col]);
// }
// }
// DS.GetRasterBand(bandcount + 1).WriteRaster(0, 0, panWidth, panHeight, ds, panWidth, panHeight, 0, 0);
// DS.FlushCache();
//}
FP.Finish();
Dri.Dispose();
DS.Dispose();
return(true);
}
catch (Exception err)
{
MessageBox.Show(err.ToString());
return(false);
}
}
public bool TiffToKml(string inPut, string outPut, int band = 1)
{
FileInfo inPutFile = new FileInfo(inPut);
bool isExtif = false;
bool isExtiff = false;
//입력 파일이 없다면 종료
if (!inPutFile.Exists)
{
return(false);
}
else
{
//입력 파일이 tif / tiff 파일이 아니라면 종료
if (inPutFile.Extension != ".tif" && inPutFile.Extension != ".tiff")
{
return(false);
}
if (inPutFile.Extension == ".tif")
{
isExtif = true;
}
if (inPutFile.Extension == ".tiff")
{
isExtiff = true;
}
}
Gdal.AllRegister();
try
{
#region Get Coordinate
double north = 36.16465526448886; //북
double south = 35.97362616042732; //남
double east = 127.5672085281825; //동
double west = 127.3435070025512; //서
Dataset dataset = Gdal.Open(inPut, Access.GA_ReadOnly);
string t_srs_wkt = "GEOGCS[\"WGS84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS84\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.01745329251994328]]";
string s_srs_wkt = dataset.GetProjectionRef();
Dataset dswarp = Gdal.AutoCreateWarpedVRT(dataset, s_srs_wkt, t_srs_wkt, ResampleAlg.GRA_NearestNeighbour, 0.125);
string[] options = null;
OSGeo.GDAL.Driver srcDrv = Gdal.GetDriverByName("GTiff");
FileInfo outPutFile = new FileInfo(outPut);
string testPath = string.Empty;
if (isExtif)
{
testPath = string.Format("{0}\\test_Png_{1}", outPutFile.DirectoryName, inPutFile.Name.Replace(".tif", ".png"));
}
else if (isExtiff)
{
testPath = string.Format("{0}\\test_Png_{1}", outPutFile.DirectoryName, inPutFile.Name.Replace(".tiff", ".png"));
}
Dataset dstDs = srcDrv.CreateCopy(testPath, dswarp, 0, options, null, null);
dstDs.FlushCache();
#endregion
#region Create PNG
string file_name = Path.GetFileNameWithoutExtension(inPutFile.Name) + "_kml.png";
string pngPath = string.Format("{0}\\{1}", outPutFile.DirectoryName, file_name);
Band band1 = dstDs.GetRasterBand(band); //특정 벤드 가져오기
int startX = 0;
int startY = 0;
int width = band1.XSize;
int height = band1.YSize;
double[] geot = new double[6];
dstDs.GetGeoTransform(geot);
double Xp = geot[0] + width * geot[1] + height * geot[2]; //우하단
double Yp = geot[3] + width * geot[4] + height * geot[5]; //우하단
north = geot[3]; //북
west = geot[0]; //서
south = Yp; //남
east = Xp; //동
int nBandSpace = Gdal.GetDataTypeSize(DataType.GDT_Byte) / 8;
int nPixelSpace = nBandSpace * dataset.RasterCount;
int nLineSpace = nPixelSpace * width;
double[] buffer = new double[width * height];
CPLErr d = band1.ReadRaster(startX, startY, width, height, buffer, width, height, 0, 0);
double[] minmax = new double[2];
band1.ComputeRasterMinMax(minmax, 0);
Bitmap bitmap = new Bitmap(width, height);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
double value = buffer[x + y * width];
if (!Double.IsNaN(value))
{
if (value >= minmax[0] && value <= minmax[1] && value != 0)
{
double colorValue = (value - minmax[0]) * 255 / (minmax[1] - minmax[0]);
Color newColor = Color.FromArgb(Convert.ToInt32(colorValue), Convert.ToInt32(colorValue), Convert.ToInt32(colorValue));
bitmap.SetPixel(x, y, newColor);
}
else
{
Color newColor = Color.FromArgb(0, 0, 0, 0);
bitmap.SetPixel(x, y, newColor);
}
}
}
}
bitmap.Save(pngPath, System.Drawing.Imaging.ImageFormat.Png);
#endregion
#region Create KML
StreamWriter sw = new StreamWriter(outPut);
sw.WriteLine("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
sw.WriteLine("<kml xmlns=\"http://www.opengis.net/kml/2.2\" xmlns:gx=\"http://www.google.com/kml/ext/2.2\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.opengis.net/kml/2.2 http://schemas.opengis.net/kml/2.2.0/ogckml22.xsd http://www.google.com/kml/ext/2.2 http://code.google.com/apis/kml/schema/kml22gx.xsd\">");
sw.WriteLine("<Document id=\"radar\">");
sw.WriteLine("\t<name>" + inPutFile.Name + "</name>");
sw.WriteLine("\t<Snippet></Snippet>");
sw.WriteLine("\t<GroundOverlay id=\"0\">");
sw.WriteLine("\t\t<Snippet></Snippet>");
sw.WriteLine("\t\t<drawOrder>1000</drawOrder>");
sw.WriteLine("\t\t<name>" + inPutFile.Name + "</name>");
sw.WriteLine("\t\t<Icon>\r\t\t\t<href>" + file_name + "</href>\r\t\t\t<viewBoundScale>1.0</viewBoundScale>\r\t\t</Icon>");
sw.WriteLine("\t\t<LatLonBox>");
sw.WriteLine("\t\t\t<north>" + north.ToString() + "</north>"); //북
sw.WriteLine("\t\t\t<south>" + south.ToString() + "</south>"); //남
sw.WriteLine("\t\t\t<east>" + east.ToString() + "</east>"); //동
sw.WriteLine("\t\t\t<west>" + west.ToString() + "</west>"); //서
sw.WriteLine("\t\t\t<rotation>0</rotation>"); //회전
sw.WriteLine("\t\t</LatLonBox>");
sw.WriteLine("\t</GroundOverlay>");
sw.WriteLine("</Document>");
sw.WriteLine("</kml>");
sw.Flush();
sw.Close();
sw.Dispose();
#endregion
dataset.Dispose();
bitmap.Dispose();
dstDs.Dispose();
srcDrv.Dispose();
dswarp.Dispose();
File.Delete(testPath);
}
catch (Exception e)
{
return(false);
}
return(true);
}
public bool ChangeProjectionByUTM(string inPut, string outPut, int band = 1)
{
FileInfo inPutFile = new FileInfo(inPut);
bool isExtif = false;
bool isExtiff = false;
//입력 파일이 없다면 종료
if (!inPutFile.Exists)
{
return(false);
}
else
{
//입력 파일이 tif / tiff 파일이 아니라면 종료
if (inPutFile.Extension != ".tif" && inPutFile.Extension != ".tiff")
{
return(false);
}
if (inPutFile.Extension == ".tif")
{
isExtif = true;
}
if (inPutFile.Extension == ".tiff")
{
isExtiff = true;
}
}
Gdal.AllRegister();
try
{
#region Change projection
string strWorldSinusoidal = "PROJCS[\"World_Sinusoidal\",GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Sinusoidal\"],PARAMETER[\"longitude_of_center\",0],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]]]";
string t_srs_wkt = "GEOGCS[\"WGS84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS84\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.01745329251994328]]";
Dataset dataset = Gdal.Open(inPut, Access.GA_ReadOnly);
dataset.SetProjection(strWorldSinusoidal);
string s_srs_wkt = dataset.GetProjectionRef();
Dataset dswarp = Gdal.AutoCreateWarpedVRT(dataset, s_srs_wkt, t_srs_wkt, ResampleAlg.GRA_NearestNeighbour, 0);
string[] options = null;
OSGeo.GDAL.Driver srcDrv = Gdal.GetDriverByName("GTiff");
FileInfo outPutFile = new FileInfo(outPut);
string testPath = string.Empty;
if (isExtif)
{
testPath = string.Format("{0}\\test_Png_{1}", outPutFile.DirectoryName, inPutFile.Name.Replace(".tif", ".png"));
}
else
if (isExtiff)
{
testPath = string.Format("{0}\\test_Png_{1}", outPutFile.DirectoryName, inPutFile.Name.Replace(".tiff", ".png"));
}
Dataset dstDs = srcDrv.CreateCopy(testPath, dswarp, 0, options, null, null);
#endregion
#region Create PNG
string file_name = Path.GetFileNameWithoutExtension(inPutFile.Name) + ".png";
//string pngPath = string.Format("{0}\\{1}", outPutFile.DirectoryName, file_name);
_strPngFile = string.Format("{0}\\{1}", outPutFile.DirectoryName, file_name);
Band band1 = dstDs.GetRasterBand(band); //특정 벤드 가져오기
int startX = 0;
int startY = 0;
int width = band1.XSize;
int height = band1.YSize;
int nBandSpace = Gdal.GetDataTypeSize(DataType.GDT_Byte) / 8;
int nPixelSpace = nBandSpace * dataset.RasterCount;
int nLineSpace = nPixelSpace * width;
double[] buffer = new double[width * height];
CPLErr d = band1.ReadRaster(startX, startY, width, height, buffer, width, height, 0, 0);
double[] minmax = new double[2];
band1.ComputeRasterMinMax(minmax, 0);
Bitmap bitmap = new Bitmap(width, height);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
double value = buffer[x + y * width];
if (!Double.IsNaN(value))
{
if (value >= minmax[0] && value <= minmax[1] && value != 0)
{
double colorValue = (value - minmax[0]) * 255 / (minmax[1] - minmax[0]);
Color newColor = Color.FromArgb(Convert.ToInt32(colorValue), Convert.ToInt32(colorValue), Convert.ToInt32(colorValue));
bitmap.SetPixel(x, y, newColor);
}
else
{
Color newColor = Color.FromArgb(0, 0, 0, 0);
bitmap.SetPixel(x, y, newColor);
}
}
}
}
bitmap.Save(_strPngFile, System.Drawing.Imaging.ImageFormat.Png);
#endregion
#region Create a GeoTiff
double north = 36.16465526448886; //북
double south = 35.97362616042732; //남
double east = 127.5672085281825; //동
double west = 127.3435070025512; //서
CheckGeoTransform(ref north, ref south, ref east, ref west, inPutFile);
double[] newGeot = CalcGeoTransform(dstDs, north, south, east, west);
OSGeo.GDAL.Driver driver = Gdal.GetDriverByName("GTiff");
Dataset oldDataSet = Gdal.Open(_strPngFile, Access.GA_ReadOnly);
Dataset newDataSet = srcDrv.CreateCopy(outPut, oldDataSet, 0, null, null, null);
newDataSet.SetProjection(dswarp.GetProjectionRef());
newDataSet.SetGeoTransform(newGeot);
#endregion
oldDataSet.Dispose();
newDataSet.Dispose();
driver.Dispose();
dataset.Dispose();
bitmap.Dispose();
dstDs.Dispose();
srcDrv.Dispose();
dswarp.Dispose();
File.Delete(testPath);
//File.Delete(pngPath);
}
catch (Exception e)
{
return(false);
}
return(true);
}
public bool ImgToGeoTiff(string inPut, string outPut, int band = 1)
{
FileInfo inPutFile = new FileInfo(inPut);
//입력 파일이 없다면 종료
if (!inPutFile.Exists)
{
return(false);
}
else
{
//입력 파일이 img 파일이 아니라면 종료
if (inPutFile.Extension != ".img")
{
return(false);
}
}
try
{
#region Create Tiff
Gdal.AllRegister();
Dataset dataset = Gdal.Open(inPut, Access.GA_ReadOnly);
Band band1 = dataset.GetRasterBand(band); //특정 벤드 가져오기
int width = band1.XSize;
int height = band1.YSize;
int startX = 0;
int startY = 0;
int nBandSpace = Gdal.GetDataTypeSize(DataType.GDT_Byte) / 8;
int nPixelSpace = nBandSpace * dataset.RasterCount;
int nLineSpace = nPixelSpace * width;
double[] buffer = new double[width * height];
CPLErr d = band1.ReadRaster(startX, startY, width, height, buffer, width, height, 0, 0);
double[] minmax = new double[2];
band1.ComputeRasterMinMax(minmax, 0);
#region 복사할 이미지 생성
Bitmap bitmap = new Bitmap(width, height);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
double value = buffer[x + y * width];
if (!Double.IsNaN(value))
{
if (value >= minmax[0] && value <= minmax[1] && value != 0)
{
double colorValue = (value - minmax[0]) * 255 / (minmax[1] - minmax[0]);
Color newColor = Color.FromArgb(Convert.ToInt32(colorValue), Convert.ToInt32(colorValue), Convert.ToInt32(colorValue));
bitmap.SetPixel(x, y, newColor);
}
else
{
Color newColor = Color.FromArgb(0, 0, 0, 0);
bitmap.SetPixel(x, y, newColor);
}
}
}
}
FileInfo outPutFile = new FileInfo(outPut);
string pngPath = string.Format("{0}\\{1}", outPutFile.DirectoryName, inPutFile.Name.Replace(".img", ".png"));
bitmap.Save(pngPath, System.Drawing.Imaging.ImageFormat.Png);
#endregion
string[] options = null;
OSGeo.GDAL.Driver srcDrv = Gdal.GetDriverByName("GTiff");
Dataset srcDs = Gdal.Open(pngPath, Access.GA_ReadOnly);
Dataset dstDs = srcDrv.CreateCopy(outPut, srcDs, 0, options, null, null);
dstDs.SetProjection(dataset.GetProjection());
double[] geot = new double[6];
dataset.GetGeoTransform(geot);
dstDs.SetGeoTransform(geot);
dstDs.FlushCache();
dstDs.Dispose();
srcDs.Dispose();
srcDrv.Dispose();
bitmap.Dispose();
File.Delete(pngPath);
#endregion
}
catch (Exception e)
{
return(false);
}
return(true);
}
