public static void exportRasterData(string parth, IRasterLayer rasterLayer, float[,] rasterMat) //输出栅格数据
{
string directory = parth.Substring(0, parth.LastIndexOf("\\"));
string name = parth.Substring(parth.LastIndexOf("\\") + 1);
IWorkspaceFactory workspaceFac = new RasterWorkspaceFactoryClass();
IRasterWorkspace2 rasterWorkspace2 = workspaceFac.OpenFromFile(directory, 0) as IRasterWorkspace2;
IRasterInfo rasterInfo = (rasterLayer.Raster as IRawBlocks).RasterInfo;
IPoint originPoint = new Point();
originPoint.PutCoords(rasterInfo.Origin.X, rasterInfo.Origin.Y - (rasterLayer.Raster as IRasterProps).Height * (rasterLayer.Raster as IRasterProps).MeanCellSize().Y);
IRasterProps rasterProps = rasterLayer.Raster as IRasterProps;
IRasterDataset rasterDataSet = rasterWorkspace2.CreateRasterDataset(name, "IMAGINE Image", originPoint, rasterProps.Width, rasterProps.Height,
rasterProps.MeanCellSize().X, rasterProps.MeanCellSize().Y, 1, rstPixelType.PT_FLOAT, rasterProps.SpatialReference, true) as IRasterDataset2;
IRaster2 raster2 = rasterDataSet.CreateDefaultRaster() as IRaster2;
IPnt pntClass = new Pnt();
pntClass.X = rasterProps.Width;
pntClass.Y = rasterProps.Height;
IRasterCursor rasterCursor = raster2.CreateCursorEx(pntClass);
IRasterCursor inRasterCursor = (rasterLayer.Raster as IRaster2).CreateCursorEx(pntClass);
IRasterEdit rasterEdit = raster2 as IRasterEdit;
if (rasterEdit.CanEdit())
{
IPixelBlock3 pixelBlock3 = rasterCursor.PixelBlock as IPixelBlock3;
IPixelBlock3 inPixelBlock3 = inRasterCursor.PixelBlock as IPixelBlock3;
System.Array pixels = (System.Array)rasterMat;
pixelBlock3.set_PixelData(0, (System.Array)pixels);
rasterEdit.Write(rasterCursor.TopLeft, (IPixelBlock)pixelBlock3);
System.Runtime.InteropServices.Marshal.ReleaseComObject(pixelBlock3);
}
rasterEdit.Refresh();
IGeoDataset inDataset = rasterLayer.Raster as IGeoDataset;
IGeoDataset outDataset = rasterDataSet as IGeoDataset;
IExtractionOp op = new RasterExtractionOpClass();
var outDataset1 = op.Raster(outDataset, inDataset);
var clipRaster = (IRaster)outDataset1;
ISaveAs pSaveAs = clipRaster as ISaveAs;
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterCursor);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
System.Runtime.InteropServices.Marshal.ReleaseComObject(raster2);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterDataSet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterWorkspace2);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workspaceFac);
if (File.Exists(parth))
{
File.Delete(parth);
}
workspaceFac = new RasterWorkspaceFactoryClass();
IDataset outdataset = pSaveAs.SaveAs(name, workspaceFac.OpenFromFile(directory, 0), "IMAGINE Image");
System.Runtime.InteropServices.Marshal.ReleaseComObject(outdataset);
return;
}
private bool writeBlockDataToFile(Point2D ptLeftTop, byte[,] dbData, int[] nSize, IRaster pRaster /*, IRasterEdit rasterEdit*/)
{
if (pRaster == null)
{
return(false);
}
try
{
//Create a pixel block using the weight and height of the raster dataset.
//If the raster dataset is large, a smaller pixel block should be used.
//Refer to the topic "How to access pixel data using a raster cursor".
int nWidth = nSize[0];
int nHeight = nSize[1];
IPnt blocksize = new PntClass();
blocksize.SetCoords(nWidth, nHeight);
IPixelBlock3 pixelblock = pRaster.CreatePixelBlock(blocksize) as IPixelBlock3;
//Populate some pixel values to the pixel block.
System.Array pixels;
pixels = (System.Array)pixelblock.get_PixelData(0);
for (int i = 0; i < nWidth; i++)
{
for (int j = 0; j < nHeight; j++)
{
pixels.SetValue(dbData[i, j], i, j);
}
}
pixelblock.set_PixelData(0, (System.Array)pixels);
//Define the location that the upper left corner of the pixel block is to write.
IPnt upperLeft = new PntClass();
upperLeft.SetCoords(ptLeftTop.X, ptLeftTop.Y);
//Write the pixel block.
IRasterEdit rasterEdit = (IRasterEdit)pRaster;
rasterEdit.Write(upperLeft, (IPixelBlock)pixelblock);
//System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
rasterEdit.Refresh();
return(true);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Error: " + ex.Message);
return(false);
}
GC.Collect();
return(true);
}
public static IRasterDataset exportRasterData(string parth, IRasterLayer rasterLayer, float[,] rasterMat)
{
string directory = parth.Substring(0, parth.LastIndexOf("\\"));
string name = parth.Substring(parth.LastIndexOf("\\") + 1);
IWorkspaceFactory workspaceFac = new RasterWorkspaceFactoryClass();
IRasterWorkspace2 rasterWorkspace2 = workspaceFac.OpenFromFile(directory, 0) as IRasterWorkspace2;
IRasterInfo rasterInfo = (rasterLayer.Raster as IRawBlocks).RasterInfo;
IPoint originPoint = new Point();
originPoint.PutCoords(rasterInfo.Origin.X, rasterInfo.Origin.Y - (rasterLayer.Raster as IRasterProps).Height * (rasterLayer.Raster as IRasterProps).MeanCellSize().Y);
IRasterProps rasterProps = rasterLayer.Raster as IRasterProps;
IRasterDataset rasterDataSet = rasterWorkspace2.CreateRasterDataset(name, "IMAGINE Image", originPoint, rasterProps.Width, rasterProps.Height, rasterProps.MeanCellSize().X, rasterProps.MeanCellSize().Y, 1, rstPixelType.PT_FLOAT, rasterProps.SpatialReference, true);
IRaster2 raster2 = rasterDataSet.CreateDefaultRaster() as IRaster2;
IPnt pntClass = new Pnt();
pntClass.X = rasterProps.Width;
pntClass.Y = rasterProps.Height;
IRasterCursor rasterCursor = raster2.CreateCursorEx(pntClass);
IRasterEdit rasterEdit = raster2 as IRasterEdit;
if (rasterEdit.CanEdit())
{
IRasterBandCollection bands = rasterDataSet as IRasterBandCollection;
IPixelBlock3 pixelBlock3 = rasterCursor.PixelBlock as IPixelBlock3;
System.Array pixels = (System.Array)pixelBlock3.get_PixelData(0);
for (int i = 0; i < rasterProps.Width; i++)
{
for (int j = 0; j < rasterProps.Height; j++)
{
pixels.SetValue(Convert.ToSingle(rasterMat[j, i]), i, j);
}
}
pixelBlock3.set_PixelData(0, (System.Array)pixels);
rasterEdit.Write(rasterCursor.TopLeft, (IPixelBlock)pixelBlock3);
}
(raster2 as IRasterProps).NoDataValue = 0f;
rasterEdit.Refresh();
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
return(rasterDataSet);
}
public IRasterDataset TinToRaster_new(ITinAdvanced pTin, esriRasterizationType eRastConvType, String sDir, String sName, rstPixelType ePixelType, Double cellsize, IEnvelope pExtent, bool bPerm)
{
IPoint pOrigin = pExtent.LowerLeft;
//pOrigin.X = pOrigin.X - (cellsize * 0.5);
//pOrigin.Y = pOrigin.Y - (cellsize * 0.5);
pOrigin.X = pOrigin.X;
pOrigin.Y = pOrigin.Y;
int nCol, nRow;
nCol = (int)Math.Round(pExtent.Width / cellsize);
nRow = (int)Math.Round(pExtent.Height / cellsize);
IGeoDataset pGDS = pTin as IGeoDataset;
ISpatialReference2 pSR = pGDS.SpatialReference as ISpatialReference2;
//这个pOrigin为栅格左下角
IWorkspaceFactory pworkspaceFactory = new RasterWorkspaceFactory();
IRasterWorkspace2 rasterws = pworkspaceFactory.OpenFromFile(sDir, 0) as IRasterWorkspace2;
IPoint originpoint = pOrigin;
//用于计算的 float型的栅格数据
IRasterDataset demdataset = rasterws.CreateRasterDataset(sName, "TIFF", originpoint, nCol, nRow,
cellsize, cellsize, 1, rstPixelType.PT_DOUBLE, null, true);
IRasterDataset pRDS = demdataset;
//IRawPixels pRawPixels = GetRawPixels(pRDS, 0);
IRaster pRaster = pRDS.CreateDefaultRaster();
IPnt pBlockSize = new DblPnt();
//nCol = 50;
//nRow = 50;
pBlockSize.X = nCol;
pBlockSize.Y = nRow;
IPixelBlock pPixelBlock = pRaster.CreatePixelBlock(pBlockSize);
//IPixelBlock pPixelBlock = pRawPixels.CreatePixelBlock(pBlockSize);
IPixelBlock3 pPixelBlock3 = pPixelBlock as IPixelBlock3;
//object val = pPixelBlock.get_SafeArray(0);
ITinSurface pTinSurf = pTin as ITinSurface;
// IRasterProps pRasterProps = pRawPixels as IRasterProps;
IRasterProps pRasterProps = pRaster as IRasterProps;
object nodata;
//pOrigin.X = pOrigin.X + (cellsize * 0.5);
//pOrigin.Y = pOrigin.Y + (cellsize * nRow) - (cellsize * 0.5);
pOrigin.X = pOrigin.X;
pOrigin.Y = pOrigin.Y + (cellsize * nRow);
nodata = pRasterProps.NoDataValue;
IGeoDatabaseBridge2 pbridge2 = (IGeoDatabaseBridge2) new GeoDatabaseHelperClass();
//这个pOrigin为栅格左上角
//pbridge2.QueryPixelBlock(pTinSurf, pOrigin.X, pOrigin.Y, cellsize, cellsize, esriRasterizationType.esriElevationAsRaster, nodata, ref val);
//if (pTin.ProcessCancelled)
// return null;
//val.GetType();
CalPixelArray(pTinSurf, pOrigin.X, pOrigin.Y, cellsize, cellsize, ref pPixelBlock3);
IPnt pOffset = new DblPnt();
pOffset.X = 0;
pOffset.Y = 0;
//pPixelBlock3.set_PixelData(0, val);
//pRawPixels.Write(pOffset, (IPixelBlock)pPixelBlock3);//写入硬盘
IRasterEdit prasteredit = pRaster as IRasterEdit;
prasteredit.Write(pOffset, (IPixelBlock)pPixelBlock3);
//pRDS = OpenOutputRasterDataset(sDir, sName);
//IPixelBlock pb = pRaster.CreatePixelBlock(pBlockSize);
//pRaster.Read(pOffset,pb);
// ISaveAs pSaveas = pRasterProps as ISaveAs2;
// pSaveas.SaveAs(sDir + "\\" + sName, null, "TIFF");
prasteredit.Refresh();
return(pRDS);
}
public void UnderInit()
{
//接口转换
IRaster2 raster2 = m_raster as IRaster2;
//获取栅格的属性
IRasterProps pRasterProps = raster2 as IRasterProps;
//获取栅格的高度和宽度
int Height = pRasterProps.Height;
int Width = pRasterProps.Width;
//获取像元的大小
double cellsizex = pRasterProps.MeanCellSize().X;
double cellsizey = pRasterProps.MeanCellSize().Y;
//创建工作空间，存储NDVI计算结果
IWorkspaceFactory pRasterWsFac = new RasterWorkspaceFactoryClass();
IWorkspace pWs = pRasterWsFac.OpenFromFile(@"F:/RDB", 0);
IRasterWorkspace2 pRasterWs;
pRasterWs = pWs as IRasterWorkspace2;
//设置原点与原栅格相同
IPoint origin = new PointClass();
origin.PutCoords(pRasterProps.Extent.XMin, pRasterProps.Extent.YMin);
//定义空间参考系为未知参考系
ISpatialReference sr = new UnknownCoordinateSystemClass();
//创建栅格
IRasterDataset2 resultDataset = pRasterWs.CreateRasterDataset("NDVI.tif", "TIFF", origin, Width, Height, cellsizex, cellsizey, 1, rstPixelType.PT_DOUBLE, sr) as IRasterDataset2;
//对创建的栅格创建栅格指针
IRaster resultRaster = resultDataset.CreateFullRaster();
IRasterCursor resultRasterCursor = ((IRaster2)resultRaster).CreateCursorEx(null);
//对原始栅格创建栅格指针
IRasterCursor rasterCursor = raster2.CreateCursorEx(null);
//创建两个像素块，用以同时遍历两个栅格
IPixelBlock3 resultPixelBlock = null;
IPixelBlock3 tempPixelBlock = null;
//创建IRasterEidt以便对结果栅格进行修改，填入计算结果
IRasterEdit resultRasterEdit = resultRaster as IRasterEdit;
//初始化像素块宽度与高度
long blockWidth = 0;
long blockHeight = 0;
do
{
//对两个像素块进行更新
resultPixelBlock = resultRasterCursor.PixelBlock as IPixelBlock3;
tempPixelBlock = rasterCursor.PixelBlock as IPixelBlock3;
//获取原始栅格中近红外波段以及红波段的数据
System.Array pixels3 = (System.Array)tempPixelBlock.get_PixelData(VisibleBandID);
System.Array pixels4 = (System.Array)tempPixelBlock.get_PixelData(InfraredBandID);
//获取结果栅格像素块的高度和宽度，并以此进行遍历
blockHeight = resultPixelBlock.Height;
blockWidth = resultPixelBlock.Width;
//获取结果栅格像素块中第一波段的值
System.Array resultPixels = (System.Array)resultPixelBlock.get_PixelData(0);
//根据NDVI公式，将计算结果写入到结果栅格像素块中
for (int i = 0; i < blockHeight; i++)
{
for (int j = 0; j < blockWidth; j++)
{
double up = double.Parse(pixels4.GetValue(j, i).ToString()) - double.Parse(pixels3.GetValue(j, i).ToString());
double down = double.Parse(pixels4.GetValue(j, i).ToString()) + double.Parse(pixels3.GetValue(j, i).ToString());
if (down != 0)
{
resultPixels.SetValue((up / down), j, i);
}
else
{
resultPixels.SetValue((0.0), j, i);
}
}
}
//将结算结果设置到结果栅格图像对应的像素块中，根据其位置进行更新后刷新
resultPixelBlock.set_PixelData(0, (System.Array)resultPixels);
resultRasterEdit.Write(resultRasterCursor.TopLeft, (IPixelBlock)resultPixelBlock);
resultRasterEdit.Refresh();
} while (resultRasterCursor.Next() == true && rasterCursor.Next() == true);//遍历完一块像素块之后遍历下一块，直到栅格遍历结束。
//将结果栅格存入到成员变量m_raster中
m_raster = resultRaster;
//我在这里无法删除这个文件怎么办！！！！！！！！！
//System.IO.File.Delete("F:/RDB/NDVI.tif");
}
public void ChangeRasterValue(IRasterDataset2 pRasterDatset, double dbScale, double dbOffset)
{
try
{
IRaster2 pRaster2 = pRasterDatset.CreateFullRaster() as IRaster2;
IPnt pPntBlock = new PntClass();
pPntBlock.X = 128;
pPntBlock.Y = 128;
IRasterCursor pRasterCursor = pRaster2.CreateCursorEx(pPntBlock);
IRasterEdit pRasterEdit = pRaster2 as IRasterEdit;
if (pRasterEdit.CanEdit())
{
IRasterBandCollection pBands = pRasterDatset as IRasterBandCollection;
IPixelBlock3 pPixelblock3 = null;
int pBlockwidth = 0;
int pBlockheight = 0;
System.Array pixels;
IPnt pPnt = null;
object pValue;
long pBandCount = pBands.Count;
//获取Nodata
IRasterProps pRasterPro = pRaster2 as IRasterProps;
object pNodata = pRasterPro.NoDataValue;
//double dbNoData = Convert.ToDouble(((double[])pNodata)[0]);
double dbNoData = getNoDataValue(pNodata);
do
{
pPixelblock3 = pRasterCursor.PixelBlock as IPixelBlock3;
pBlockwidth = pPixelblock3.Width;
pBlockheight = pPixelblock3.Height;
for (int k = 0; k < pBandCount; k++)
{
pixels = (System.Array)pPixelblock3.get_PixelData(k);
for (int i = 0; i < pBlockwidth; i++)
{
for (int j = 0; j < pBlockheight; j++)
{
pValue = pixels.GetValue(i, j);
double ob = Convert.ToDouble(pValue);
if (ob != dbNoData)
{
ob *= dbScale; //翻转
ob += dbOffset; //Z方向偏移
}
IRasterProps pRP = pRaster2 as IRasterProps;
if (pRP.PixelType == rstPixelType.PT_CHAR)
{
pixels.SetValue(Convert.ToChar(ob), i, j);
}
else if (pRP.PixelType == rstPixelType.PT_UCHAR)
{
pixels.SetValue(Convert.ToByte(ob), i, j);
}
else if (pRP.PixelType == rstPixelType.PT_FLOAT)
{
pixels.SetValue(Convert.ToSingle(ob), i, j);
}
else if (pRP.PixelType == rstPixelType.PT_DOUBLE)
{
pixels.SetValue(Convert.ToDouble(ob), i, j);
}
else if (pRP.PixelType == rstPixelType.PT_ULONG)
{
pixels.SetValue(Convert.ToInt32(ob), i, j);
}
else
{
;
}
}
}
pPixelblock3.set_PixelData(k, pixels);
System.Array textPixel = null;
textPixel = (System.Array)pPixelblock3.get_PixelData(k);
}
pPnt = pRasterCursor.TopLeft;
pRasterEdit.Write(pPnt, (IPixelBlock)pPixelblock3);
}while (pRasterCursor.Next());
//改变了Z值，重新统计下直方图
//IRasterDataset2 prd = pRaster2 as IRasterDataset2;
IRasterDatasetEdit3 pRedtit = pRasterDatset as IRasterDatasetEdit3;
pRedtit.DeleteStats();//This method is avaliable only on raster datasets in File and ArcSDE geodatabases.
pRedtit.ComputeStatisticsHistogram(1, 1, null, true);
pRasterEdit.Refresh();
System.Runtime.InteropServices.Marshal.ReleaseComObject(pRasterEdit);
}
}
catch (System.Exception ex)
{
}
}
//采用另一种方法实现互换XY，不会改变影像的分辨率
public bool NorthEastToEastNorth(IRasterLayer pRasterLayer, string szFilename)//坐标系x,y变换
{
if (pRasterLayer == null || szFilename == null)
{
return(false);
}
try
{
ITransformationOp dstTrans = new RasterTransformationOpClass();
IRasterAnalysisEnvironment pDstAnalysisEnvironment = dstTrans as IRasterAnalysisEnvironment;
if (pDstAnalysisEnvironment == null)
{
return(false);
}
//设置分辨率
IRaster2 pRaster2 = pRasterLayer.Raster as IRaster2;
IRasterProps pProps = pRaster2 as IRasterProps;
double dbCellSizeX = pProps.MeanCellSize().X;
double dbCellSizeY = pProps.MeanCellSize().Y;
double dbCellSizeMean = (dbCellSizeX + dbCellSizeY) / 2;
//pDstAnalysisEnvironment.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, dbCellSizeMean);
//定义原始数据集和目标数据集
IGeoDataset pSrcGeoDataset = pRasterLayer.Raster as IGeoDataset;
IGeoDataset pDstGeoDataset = null;
IGeoDataset pTmpGeoDataset = null;
//顺时针旋转90度
IPoint pt = new PointClass();
pt.X = 0;
pt.Y = 0;
pTmpGeoDataset = dstTrans.Rotate(pSrcGeoDataset, esriGeoAnalysisResampleEnum.esriGeoAnalysisResampleCubic, 90, pt);
//pDstGeoDataset = pTmpGeoDataset;
//水平旋转
pSrcGeoDataset = dstTrans.Flip(pTmpGeoDataset);
//由于翻转是以图像中心为界，所以要加上偏移量
IEnvelope pExtent = pSrcGeoDataset.Extent;
double dbCenterY = (pExtent.UpperLeft.Y + pExtent.LowerRight.Y) / 2;
double dbDeltaX = 0;
double dbDeltaY = -dbCenterY * 2;
//pDstGeoDataset = dstTrans.Flip(pTmpGeoDataset);
pDstGeoDataset = dstTrans.Shift(pSrcGeoDataset, dbDeltaX, dbDeltaY, null);
if (pDstGeoDataset == null)
{
return(false);
}
IRasterLayer pLayer = new RasterLayerClass();
pLayer.CreateFromDataset(pDstGeoDataset as IRasterDataset);
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
IWorkspace inmemWor = workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(szFilename), 0);
ISaveAs2 sa = pDstGeoDataset as ISaveAs2;
//IRaster2 pR2 = ((IRasterDataset3)pDstGeoDataset).CreateDefaultRaster() as IRaster2;
IRaster2 pR2 = pLayer.Raster as IRaster2;
IRasterEdit pRe = pR2 as IRasterEdit;
//pRe.Refresh();
// sa = ((IRasterDataset3)pDstGeoDataset).CreateDefaultRaster() as ISaveAs2;
sa = pRe as ISaveAs2;
if (sa != null)
{
sa.SaveAs(System.IO.Path.GetFileName(szFilename), inmemWor, "TIFF");
//sa.SaveAsRasterDataset()
pRe.Refresh();
System.Runtime.InteropServices.Marshal.ReleaseComObject(pRe);
(pDstGeoDataset as IRasterDataset3).Refresh();
}
IRasterEdit pRasterEdit = pRaster2 as IRasterEdit;
System.Runtime.InteropServices.Marshal.ReleaseComObject(pRasterEdit);
return(true);
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
}
//分析的主要实现函数
private IRasterLayer Analyze(IRasterLayer pRasterLayer)
{
IRaster pRaster = pRasterLayer.Raster;
IRasterProps rasterProps = (IRasterProps)pRaster;
//设置栅格数据起始点
IPnt pBlockSize = new Pnt();
pBlockSize.SetCoords(rasterProps.Width, rasterProps.Height);
//选取整个范围
IPixelBlock pPixelBlock = pRaster.CreatePixelBlock(pBlockSize);
//左上点坐标
IPnt tlp = new Pnt();
tlp.SetCoords(0, 0);
//读入栅格
IRasterBandCollection pRasterBands = pRaster as IRasterBandCollection;
IRasterBand pRasterBand = pRasterBands.Item(0);
IRawPixels pRawRixels = pRasterBands.Item(0) as IRawPixels;
pRawRixels.Read(tlp, pPixelBlock);
//将PixBlock的值组成数组
Array pSafeArray = pPixelBlock.get_SafeArray(0) as Array;
//Array转数组
double[,] myDoubleArr = new double[pSafeArray.GetLength(0), pSafeArray.GetLength(1)];
for (int i = 0; i < myDoubleArr.GetLength(0); i++)
{
for (int j = 0; j < myDoubleArr.GetLength(1); j++)
{
myDoubleArr[i, j] = Convert.ToDouble(pSafeArray.GetValue(i, j));
}
}
for (int i = 0; i < myDoubleArr.GetLength(0); i++)
{
for (int j = 0; j < myDoubleArr.GetLength(1); j++)
{
if (myDoubleArr[i, j] == 255)
{
myDoubleArr[i, j] = 0;
}
}
}
double[,] ZeroArray = GetArray(myDoubleArr, Convert.ToInt32(textBox4.Text));
double[,] OArray = SumArray(ZeroArray, Convert.ToInt32(textBox4.Text));
double[,] LastArray = ReturnLastArray(OArray, Convert.ToInt32(textBox4.Text));
pPixelBlock.set_SafeArray(0, LastArray);
//StreamWriter sw = File.AppendText(@"E:\GIS底层实验\WorkSpace\result\arrry.txt");
//for (int y = 0; y < rasterProps.Height; y++)
//{
// for (int x = 0; x < rasterProps.Width; x++)
// {
// //int value = Convert.ToInt32(pSafeArray.GetValue(x, y));
// Byte value = Convert.ToByte(pSafeArray.GetValue(x, y));
// string TxtCon = ("X:" + Convert.ToString(x) + "," + "Y:" + Convert.ToString(y) + "," + "Value" + pSafeArray.GetValue(x, y) + "\n");
// sw.Write(TxtCon);
// }
//}
//sw.Flush();
//sw.Close();
// 编辑raster，将更新的值写入raster中
IRasterEdit rasterEdit = pRaster as IRasterEdit;
rasterEdit.Write(tlp, pPixelBlock);
rasterEdit.Refresh();
return(pRasterLayer);
}
public void underInit()
{
IRaster2 raster2 = m_raster as IRaster2;
IRasterDataset rstDataset = raster2.RasterDataset;
IRasterBandCollection rstBandColl = rstDataset as IRasterBandCollection;
if (rstBandColl.Count > 1)
{
MessageBox.Show("暂不支持多波段的滤波计算", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
IRasterProps pRasterProps = raster2 as IRasterProps;
int Height = pRasterProps.Height;
int Width = pRasterProps.Width;
double cellsizex = pRasterProps.MeanCellSize().X;
double cellsizey = pRasterProps.MeanCellSize().Y;
rstPixelType pixelType = pRasterProps.PixelType;
ISpatialReference spatialReference = pRasterProps.SpatialReference;
//MessageBox.Show(spatialReference.Name.ToString());
IWorkspaceFactory pRasterWsFac = new RasterWorkspaceFactoryClass();
IWorkspace pWs = pRasterWsFac.OpenFromFile(@"D://RDB", 0);
IRasterWorkspace2 pRasterWs;
pRasterWs = pWs as IRasterWorkspace2;
IPoint origin = new PointClass();
origin.PutCoords(pRasterProps.Extent.XMin, pRasterProps.Extent.YMin);
//RasterWorkspace rasterWorkspace = (RasterWorkspace)workspace;
ISpatialReference sr = new UnknownCoordinateSystemClass();
IRasterDataset2 resultDataset = pRasterWs.CreateRasterDataset("raster" + "_" + cmb_FliterMethod.SelectedItem.ToString() + ".tif", "TIFF", origin, Width, Height, cellsizex, cellsizey, 1, rstPixelType.PT_DOUBLE, sr) as IRasterDataset2;
IRaster resultRaster = resultDataset.CreateFullRaster();
IRasterCursor resultRasterCursor = ((IRaster2)resultRaster).CreateCursorEx(null);
IRasterDataset2 rasterDataset = raster2.RasterDataset as IRasterDataset2;
IRaster2 raster = rasterDataset.CreateFullRaster() as IRaster2;
IRasterCursor rasterCursor = raster.CreateCursorEx(null);
IPixelBlock3 resultPixelBlock = null;
IPixelBlock3 tempPixelBlock = null;
IRasterEdit resultRasterEdit = resultRaster as IRasterEdit;
long blockWidth = 0;
long blockHeight = 0;
// System.Array pixels;
double[,] kernal = new double[3, 3] {
{ 0, 0, 0 },
{ 0, 1, 0 },
{ 0, 0, 0 }
};
switch (cmb_FliterMethod.SelectedItem.ToString())
{
case "LineDetectionHorizontal":
kernal = new double[3, 3] {
{ -1, -1, -1 },
{ 2, 2, 2 },
{ -1, -1, -1 }
};
break;
case "LineDetectionVertical":
kernal = new double[3, 3] {
{ -1, 2, -1 },
{ -1, 2, -1 },
{ -1, 2, -1 }
};
break;
case "Laplacian3x3":
kernal = new double[3, 3] {
{ 0, -1, 0 },
{ -1, 4, -1 },
{ 0, -1, 0 }
};
break;
case "Smoothing3x3":
kernal = new double[3, 3] {
{ 1, 2, 1 },
{ 2, 4, 2 },
{ 1, 2, 1 }
};
break;
case "Sharpening3x3":
kernal = new double[3, 3] {
{ -1, -1, -1 },
{ -1, 9, -1 },
{ -1, -1, -1 }
};
break;
}
do
{
resultPixelBlock = resultRasterCursor.PixelBlock as IPixelBlock3;
tempPixelBlock = rasterCursor.PixelBlock as IPixelBlock3;
System.Array pixels = (System.Array)tempPixelBlock.get_PixelData(0);
//MessageBox.Show(pixels3.GetValue(0, 0).GetType().ToString());
blockHeight = resultPixelBlock.Height;
blockWidth = resultPixelBlock.Width;
System.Array resultPixels = (System.Array)resultPixelBlock.get_PixelData(0);
//MessageBox.Show(resultPixels.GetValue(0, 0).GetType().ToString());
for (int i = 0; i < blockHeight; i++)
{
for (int j = 0; j < blockWidth; j++)
{
double sum = 0;
for (int ki = -1; ki <= 1; ki++)
{
for (int kj = -1; kj <= 1; kj++)
{
long idxi = (i + ki) < 0 ? 0 : i + ki >= blockHeight ? blockHeight - 1 : (i + ki);
long idxj = (j + kj) < 0 ? 0 : j + kj >= blockWidth ? blockWidth - 1 : (j + kj);
double raw = double.Parse(pixels.GetValue(idxj, idxi).ToString());
sum += raw * kernal[ki + 1, kj + 1];
}
}
resultPixels.SetValue(sum, j, i);
}
}
resultPixelBlock.set_PixelData(0, (System.Array)resultPixels);
resultRasterEdit.Write(resultRasterCursor.TopLeft, (IPixelBlock)resultPixelBlock);
resultRasterEdit.Refresh();
} while (resultRasterCursor.Next() == true && rasterCursor.Next() == true);
IRasterDataset pRasterDs = pRasterWs.OpenRasterDataset("raster" + "_" + cmb_FliterMethod.SelectedItem.ToString() + ".tif");
IRaster praster = ((IRasterDataset2)pRasterDs).CreateFullRaster();
//IRasterLayer resLayer = new RasterLayerClass();
//resLayer.CreateFromRaster(praster);
m_raster = praster;
}
public bool SetRegionToNoDataValue()
{
try
{
if (m_pSrcRaster == null || m_pClipPolygon == null || double.IsNaN(m_dbNoDataValue))
{
return(false);
}
IGeoDataset pSrcGeoDataset = m_pSrcRaster as IGeoDataset;
IExtractionOp pRasterExtractionOp = new RasterExtractionOpClass();
IRasterProps pSrcRasterProps = m_pSrcRaster as IRasterProps;
double dbCellSize = (pSrcRasterProps.MeanCellSize().X + pSrcRasterProps.MeanCellSize().Y) / 2;
//设置范围和分辨率
IRasterAnalysisEnvironment pRasterAnalysisEnv = pRasterExtractionOp as IRasterAnalysisEnvironment;
pRasterAnalysisEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, dbCellSize);
pRasterAnalysisEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, m_pClipPolygon.Envelope, Type.Missing);
//pRasterAnalysisEnv.OutSpatialReference = (m_pSrcRaster as IRasterProps).SpatialReference;
//保留区域外的值，区域内的设置为原始栅格的无效值
IGeoDataset pDstGeoDataset = pRasterExtractionOp.Rectangle(pSrcGeoDataset, m_pClipPolygon.Envelope, true);
//逐点判断像素是否在区域内，在区域内则改变为设置值，否则不变
IRelationalOperator pRelationalOp = m_pClipPolygon as IRelationalOperator;
if (pDstGeoDataset is IRaster)
{
//得到原始栅格的对象，用于修改
IRaster2 pSrcRaster2 = m_pSrcRaster as IRaster2;
IRasterDataset2 pSrcRasterDataset2 = pSrcRaster2.RasterDataset as IRasterDataset2;
IRaster pTmpRaster = pSrcRasterDataset2.CreateFullRaster();
IRasterEdit pSrcEdit = pTmpRaster as IRasterEdit;
//得到图层NoDataValue
IRasterProps rasterProps = pSrcRaster2 as IRasterProps;
double noData = ClsGDBDataCommon.getNoDataValue(rasterProps.NoDataValue);
//得到输出的栅格
IRaster2 pDstRaster2 = pDstGeoDataset as IRaster2;
IRasterProps pDstRasterProps = pDstRaster2 as IRasterProps;
IRasterCursor pDstRasterCursor = pDstRaster2.CreateCursorEx(null);
//pDstRasterCursor.Reset();
do
{
//得到当前处理的块
IPixelBlock3 pixelBlock3 = pDstRasterCursor.PixelBlock as IPixelBlock3;
int nWidth = pixelBlock3.Width;
int nHeight = pixelBlock3.Height;
IPnt ptLeftTop = pDstRasterCursor.TopLeft;
//block值转数组时，NoData转换时有时为NoData，有时为栅格中的最小值
System.Array array = pixelBlock3.get_PixelData(0) as System.Array;
//逐点判断: 判断像素是否在区域内，在区域内则改变为设置值，否则不变
for (int i = 0; i < nWidth; i++)
{
for (int j = 0; j < nHeight; j++)
{
double dbX = double.NaN, dbY = double.NaN;
//得到当前像素点的地图坐标
int nCurrentX = Convert.ToInt32(ptLeftTop.X + i);
int nCurrentY = Convert.ToInt32(ptLeftTop.Y + j);
pDstRaster2.PixelToMap(nCurrentX, nCurrentY, out dbX, out dbY);
IPoint ptInMap = new PointClass();
ptInMap.X = dbX;
ptInMap.Y = dbY;
//判断是否在区域内
bool bFlag = pRelationalOp.Contains(ptInMap as IGeometry);
if (bFlag) //在当前区域内
{
object oValidValue = getValidType(pDstRasterProps, m_dbNoDataValue);
array.SetValue(oValidValue, i, j);
}
else
{
double v = Convert.ToDouble(array.GetValue(i, j));
if (v == 0 || v < -3.4e15 || v > 3.4e15)
//if (v == 0 || Math.Abs(v -noData) <1e18)
{
int col, row;
pSrcRaster2.MapToPixel(dbX, dbY, out col, out row);
//表示getpixelvalue为null表示nodata
object obj = pSrcRaster2.GetPixelValue(0, col, row);
if (obj == null)
{
object oValidValue = getValidType(pDstRasterProps, m_dbNoDataValue);
array.SetValue(oValidValue, i, j);
}
else
{
array.SetValue(obj, i, j);
}
}
}
}
}
pixelBlock3.set_PixelData(0, array);
//得到当前区域块在原图中的左上角像素坐标, 直接修改原栅格的数据
int nPixelLeftX = -1, nPixelLeftY = -1;
double dbMapLeftTopX = double.NaN, dbMapLeftTopY = double.NaN;
pDstRaster2.PixelToMap(Convert.ToInt32(ptLeftTop.X), Convert.ToInt32(ptLeftTop.Y), out dbMapLeftTopX, out dbMapLeftTopY); //得到当前块左上角的地理坐标
pSrcRaster2.MapToPixel(dbMapLeftTopX, dbMapLeftTopY, out nPixelLeftX, out nPixelLeftY);
IPnt ptPixelLeftTop = new PntClass();
ptPixelLeftTop.SetCoords(nPixelLeftX, nPixelLeftY);
if (pSrcEdit.CanEdit())
{
pSrcEdit.Write(ptPixelLeftTop, pixelBlock3 as IPixelBlock);
//pSrcEdit.Refresh();
}
else
{
return(false);
}
} while (pDstRasterCursor.Next() == true);
//更新
pSrcEdit.Refresh();
}
else
{
return(false);
}
return(true);
}
catch (System.Exception ex)
{
return(false);
}
}
//逐点算法
public bool ImageReprojectionRange(IRaster pSrcRaster, out IRaster pDstRaster, ExOriPara exori,
double dbFocus, double fx, double fy, int nImgWidth, int nImgHeight, int nGeoRange)
{
pDstRaster = null;
Pt2i ptSubImgLeftTop = new Pt2i();
double[,] dbSubDemData = getSubDem(pSrcRaster, exori.pos, nGeoRange, ref ptSubImgLeftTop);
if (dbSubDemData == null)
{
return(false);
}
IRasterProps pProps = pSrcRaster as IRasterProps;
int nDemHeight = pProps.Height;
int nDemWidth = pProps.Width;
IRaster2 pRaster2 = pSrcRaster as IRaster2;
double dbNoDataValue = getNoDataValue(pProps.NoDataValue);
//object pNodata = pProps.NoDataValue;
//double value=((double[])pNodata)[0];
//double dbNoDataValue =double.Parse((float[]pNodata)[0].ToString());
//double dbNoDataValue = Convert.ToDouble(((double[]))[0]);
//object dbNoDataValue = Convert.ToDouble(pProps.NoDataValue.ToString());
//object nodatavalue = pProps.NoDataValue;
//Type type=pProps.NoDataValue.GetType();
//double dbNoDataValue = type.IsArray ? nodatavalue[0] as double : nodatavalue as double;
//初始步长
double dbInitialStep = 0;
int nGridW = nDemWidth / 10;
int nGridH = nDemHeight / 10;
int nCount = 0;
double dbHeightAvg = 0;
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
double dDemZ = double.NaN;
double dbGeoX = pRaster2.ToMapX(i * nGridW);
double dbGeoY = pRaster2.ToMapY(j * nGridH);
if (GetGeoZ(pSrcRaster, dbSubDemData, ptSubImgLeftTop, dbGeoX, dbGeoY, ref dDemZ) && Math.Abs(dDemZ - dbNoDataValue) >= 10e-10)
{
nCount++;
dbHeightAvg += dDemZ;
}
}
}
if (nCount != 0)
{
dbHeightAvg /= nCount;
}
else
{
return(false);
}
double dbCurCameraZ = 0;
//IRaster2 pRaster2 = pSrcRaster as IRaster2;
//int nCameraImgX = pRaster2.ToPixelColumn(exori.pos.X);//dXCumulate - pDem.m_PtOrigin.X) / dXRdem;
//int nCameraImgY = pRaster2.ToPixelRow(exori.pos.Y); // (dYCumulate - pDem.m_PtOrigin.Y) / dYRdem;
//if (nCameraImgY >= 0 || nCameraImgY < nDemHeight || nCameraImgX >= 0 || nCameraImgX < nDemWidth)
//{
if (GetGeoZ(pSrcRaster, dbSubDemData, ptSubImgLeftTop, exori.pos.X, exori.pos.Y, ref dbCurCameraZ) && Math.Abs(dbCurCameraZ - dbNoDataValue) >= 10e-10)
{
dbHeightAvg = dbCurCameraZ;
}
//}
dbInitialStep = Math.Abs(dbHeightAvg - exori.pos.Z) / 2;
Point2D ptLeftTop = new Point2D(0, 0);
double[] dbResolution = new double[2];
dbResolution[0] = pProps.MeanCellSize().X;
dbResolution[1] = pProps.MeanCellSize().Y;
int[] nSize = new int[2];
nSize[0] = nDemWidth;
nSize[1] = nDemHeight;
//pDstRaster = CreateRaster(ptLeftTop, dbResolution, nSize);
//pDstRaster = createRasterWithoutData(ptLeftTop, dbResolution[0], nSize, "testOutput.tif");
// byte[,] dbData = new byte[nDemWidth, nDemHeight];
//double demGrayVal=double.NaN;
//Pt3d demXYZ;
//byte byteGray;
//byte bt = (byte)255;
//Pt2d pt;
Matrix matA, matB;
matA = new Matrix(2, 2);
matB = new Matrix(2, 1);
Matrix matR;
matR = new Matrix(3, 3);
//Matrix matX;
double[] a = new double[4];
double[] b = new double[2];
OPK2RMat(exori.ori, ref matR); //求解相关系数
double a1 = matR.getNum(0, 0);
double a2 = matR.getNum(0, 1);
double a3 = matR.getNum(0, 2);
double b1 = matR.getNum(1, 0);
double b2 = matR.getNum(1, 1);
double b3 = matR.getNum(1, 2);
double c1 = matR.getNum(2, 0);
double c2 = matR.getNum(2, 1);
double c3 = matR.getNum(2, 2);
double[] dbCoef = new double[] { a1, a2, a3, b1, b2, b3, c1, c2, c3 };
//double X, Y, Z, Z1;
// Z = 0.0;
//double dthreshold = 0.01;
//初始化数组
//int[,] dbData = new int[nDemWidth, nDemHeight];
//for (int i = 0; i < nDemWidth; i++)
//{
// for (int j = 0; j < nDemHeight; j++)
// {
// dbData[i, j] = 0;
// }
//}
try
{
//生成RASTER
Point2D pt2dTopLeft = new Point2D();
pt2dTopLeft.X = pProps.Extent.UpperLeft.X;
pt2dTopLeft.Y = pProps.Extent.UpperLeft.Y;
pDstRaster = CreateRaster(pt2dTopLeft, dbResolution, nSize);
if (pDstRaster == null)
{
return(false);
}
//得到数组
IPnt pBlockSize = new DblPntClass();
pBlockSize.X = nDemWidth;
pBlockSize.Y = nDemHeight;
IPnt pntLeftTop = new DblPntClass();
pntLeftTop.SetCoords(ptLeftTop.X, ptLeftTop.Y);
IPixelBlock pPixelBlock = pDstRaster.CreatePixelBlock(pBlockSize);
IPixelBlock3 pPixelBlock3 = pPixelBlock as IPixelBlock3;
pDstRaster.Read(pntLeftTop, pPixelBlock);
System.Array pixels;
pixels = (System.Array)pPixelBlock3.get_PixelData(0);
//初始化
object oValue = getValidType(pDstRaster as IRasterProps, 0);
for (int i = 0; i < nDemHeight; i++)
{
for (int j = 0; j < nDemWidth; j++)
{
pixels.SetValue(oValue, j, i);
}
}
//逐像素判断是否可见
IRaster2 pSrcRaster2 = pSrcRaster as IRaster2;
oValue = getValidType(pDstRaster as IRasterProps, 255);
for (int i = 0; i < nImgHeight; i++)
{
for (int j = 0; j < nImgWidth; j++)
{
Point2D ptCurrent = null;
if (getPixelIsCoverd(pSrcRaster, dbSubDemData, ptSubImgLeftTop, j, i, out ptCurrent, exori, dbCoef, dbFocus, fx, fy, dbInitialStep))
{
int nCol = int.MaxValue, nRow = int.MaxValue;
pSrcRaster2.MapToPixel(ptCurrent.X, ptCurrent.Y, out nCol, out nRow);
if (nCol >= nDemWidth || nCol < 0 || nRow < 0 || nRow >= nDemHeight)
{
continue;
}
pixels.SetValue(oValue, nCol, nRow);
//pixels[nCol, nRow] = 255;
}
}
}
pPixelBlock3.set_PixelData(0, (System.Array)pixels);
//修改数据
IRasterEdit pRasterEdit = pDstRaster as IRasterEdit;
pRasterEdit.Write(pntLeftTop, pPixelBlock);
pRasterEdit.Refresh();
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
return(true);
}