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XDL

XDMBandLocalWarp Class
참조 영상을 이용해서 정합점(입력영상 이미지 좌표-참조영상 이미지 좌표)을 생성하여 영상 정합을 수행한다.
Inheritance Hierarchy
SystemObject
  Pixoneer.NXDL.NRSXDMBand
    Pixoneer.NXDL.NRSEXXDMBandLocalWarp

Namespace: Pixoneer.NXDL.NRSEX
Assembly: NXDLrsEx (in NXDLrsEx.dll) Version: 2.0.3.38
Syntax
C#
Copy
public class XDMBandLocalWarp : XDMBand

The XDMBandLocalWarp type exposes the following members.

Constructors
 NameDescription
Public methodXDMBandLocalWarp 클래스의 기본 생성자로서, 멤버변수에 대하여 초기화를 수행한다.
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Methods
 NameDescription
Public methodGetInputParam 영상 정합을 위한 입력 파라미터를 얻는다.
Public methodPreprocess 정합점들로 Triangle을 생성하고 각 Triangle 에 대한 warping coeff (xr, yr) --> (xi, yi) 를 계산한다.
Public methodSetInputParam 영상 정합을 위한 입력 파라미터를 설정.
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Example
This is example C# : 수동으로 생성한 GCP 를 이용하여 영상 정합 수행하는 예제
C#
Copy
// IO initialize to load image file
XRasterIO RasterIO = new XRasterIO();
string strError = "";
if (RasterIO.Initialize(out strError) == false)
{
    return;
}

// Image load
string strFilePathLoad1 = @"G:\Sample\LocalWarp\photo.xdm";
string strFilePathLoad2 = @"G:\Sample\LocalWarp\Negaunee.xdm";
XRSLoadFile xrsFileSrc = RasterIO.LoadFile(strFilePathLoad1, out strError, false, eIOCreateXLDMode.All_NoMsg);
XRSLoadFile xrsFileRef = RasterIO.LoadFile(strFilePathLoad2, out strError, false, eIOCreateXLDMode.All_NoMsg);

XDMBand bandSrc = xrsFileSrc.GetBandAt(0);
XDMBand bandRef = xrsFileRef.GetBandAt(0);

XGCP gcp1 = new XGCP();
gcp1.imgCoord.x = 1998.2961;
gcp1.imgCoord.y = 158.6989;
gcp1.refCoord.x = 2534.2150;
gcp1.refCoord.y = 652.0193;

XGCP gcp2 = new XGCP();
gcp2.imgCoord.x = 1965.0028;
gcp2.imgCoord.y = 1744.6427;
gcp2.refCoord.x = 2470.1761;
gcp2.refCoord.y = 2276.2578;

XGCP gcp3 = new XGCP();
gcp3.imgCoord.x = 1893.5687;
gcp3.imgCoord.y = 565.8181;
gcp3.refCoord.x = 2419.3451;
gcp3.refCoord.y = 1068.6179;

XGCP gcp4 = new XGCP();
gcp4.imgCoord.x = 2660.0829;
gcp4.imgCoord.y = 774.2678;
gcp4.refCoord.x = 3180.2355;
gcp4.refCoord.y = 1278.0713;

XGCP gcp5 = new XGCP();
gcp5.imgCoord.x = 2509.6825;
gcp5.imgCoord.y = 886.4084;
gcp5.refCoord.x = 3026.7015;
gcp5.refCoord.y = 1389.7092;

XGCP gcp6 = new XGCP();
gcp6.imgCoord.x = 1956.8952;
gcp6.imgCoord.y = 896.9628;
gcp6.refCoord.x = 2479.6710;
gcp6.refCoord.y = 1408.6453;

XGCP gcp7 = new XGCP();
gcp7.imgCoord.x = 898.8155;
gcp7.imgCoord.y = 1232.0654;
gcp7.refCoord.x = 1418.3478;
gcp7.refCoord.y = 1759.7482;

XGCPSets gcpSets = new XGCPSets();
gcpSets.AddGCP(ref gcp1);
gcpSets.AddGCP(ref gcp2);
gcpSets.AddGCP(ref gcp3);
gcpSets.AddGCP(ref gcp4);
gcpSets.AddGCP(ref gcp6);
gcpSets.AddGCP(ref gcp7);

double minx = double.MaxValue;
double miny = double.MaxValue;
double maxx = double.MinValue;
double maxy = double.MinValue;
for (int i = 0; i < gcpSets.GetNumGCP(); i++)
{
    XGCP gcp = gcpSets.GetGCP(i);
    minx = gcp.refCoord.x < minx ? gcp.refCoord.x : minx;
    miny = gcp.refCoord.y < miny ? gcp.refCoord.y : miny;
    maxx = gcp.refCoord.x > maxx ? gcp.refCoord.x : maxx;
    maxy = gcp.refCoord.y > maxy ? gcp.refCoord.y : maxy;
}

double wminx = minx;
double wmaxx = maxx;
double wminy = maxy;
double wmaxy = miny;
bandRef.PixelToWorld(ref wminx, ref wminy);
bandRef.PixelToWorld(ref wmaxx, ref wmaxy);

double psx = 1.0;
double psy = 1.0;
XBandParamLocalWarp param = new XBandParamLocalWarp();
param.SrcBand = bandSrc;
param.RefBand = bandRef;
param.SR = bandRef.SR;
param.ResampleMethod = eResampleMethod.BiLinear;
param.GcpSets = gcpSets;
param.BlankValue = 0;
param.ULX = wminx;
param.ULY = wmaxy;
param.SizeX = (int)((wmaxx - wminx) / psx);
param.SizeY = (int)((wmaxy - wminy) / psy);
param.PixelSizeX = 1.0;
param.PixelSizeY = 1.0;

XDMBandLocalWarp bandLocalWarp = new XDMBandLocalWarp();
if (!bandLocalWarp.SetInputParam(ref param))
{
    return;
}

if (bandLocalWarp.Preprocess(null))
{
    // create XRSSaveFile to save realtime band(XDMBandXXXX)
    XRSSaveFile fileSave = new XRSSaveFile();
    XDMBand bandCast = (XDMBand)bandLocalWarp;

    fileSave.AddBand(ref bandCast);

    // Save output file
    String strFilePathSave = @"D:\Sample\localwarp.xdm";
    if (RasterIO.Export(ref fileSave, strFilePathSave, "XDM", out strError, null))
    {
        MessageBox.Show("성공");
        return;
    }
}
 This is example C# : 자동으로 생성한 GCP 를 이용하여 영상 정합 수행하는 예제
C#
Copy
// IO initialize to load image file
XRasterIO RasterIO = new XRasterIO();
string strError = "";
if (RasterIO.Initialize(out strError) == false)
{
    return;
}

// Image load
string strFilePathLoad1 = @"G:\Sample\LocalWarp\photo.xdm";
string strFilePathLoad2 = @"G:\Sample\LocalWarp\Negaunee.xdm";
XRSLoadFile xrsFileSrc = RasterIO.LoadFile(strFilePathLoad1, out strError, false, eIOCreateXLDMode.All_NoMsg);
XRSLoadFile xrsFileRef = RasterIO.LoadFile(strFilePathLoad2, out strError, false, eIOCreateXLDMode.All_NoMsg);

XDMBand bandSrc = xrsFileSrc.GetBandAt(0);
XDMBand bandRef = xrsFileRef.GetBandAt(0);

XGCP gcp1 = new XGCP();
gcp1.imgCoord.x = 1998.2961;
gcp1.imgCoord.y = 158.6989;
gcp1.refCoord.x = 2534.2150;
gcp1.refCoord.y = 652.0193;

XGCP gcp2 = new XGCP();
gcp2.imgCoord.x = 2442.2078;
gcp2.imgCoord.y = 1949.9519;
gcp2.refCoord.x = 2954.6654;
gcp2.refCoord.y = 2488.2819;

XGCP gcp3 = new XGCP();
gcp3.imgCoord.x = 1965.0028;
gcp3.imgCoord.y = 1744.6427;
gcp3.refCoord.x = 2470.1761;
gcp3.refCoord.y = 2276.2578;

XGCPSets gcpBaseSets = new XGCPSets();
gcpBaseSets.AddGCP(ref gcp1);
gcpBaseSets.AddGCP(ref gcp2);
gcpBaseSets.AddGCP(ref gcp3);

XGenPMAG genPMAG = new XGenPMAG();
genPMAG.KernelX = 25;
genPMAG.KernelY = 25;
genPMAG.KernelXCorrect = 50;
genPMAG.KernelYCorrect = 50;
genPMAG.NumXGrid = 20;
genPMAG.NumYGrid = 20;
genPMAG.CorrThreshold = 0.8;
genPMAG.IsForceEdgeMatching = true;
genPMAG.MaxIteration = 3;
genPMAG.SetImageBand(bandSrc);
genPMAG.SetReferenceBand(bandRef);
genPMAG.SetSearchRange(0, bandSrc.XSize - 1, 0, bandSrc.YSize - 1);
for (int i = 0; i < gcpBaseSets.GetNumGCP(); i++)
{
    XGCP gcp = gcpBaseSets.GetGCP(i);
    genPMAG.AddBaseGCP(gcp.imgCoord.x, gcp.imgCoord.y, gcp.refCoord.x, gcp.refCoord.y);
}

XGCPSets gcpSets = null;
if (!genPMAG.GenerateGCP(null))
{
    MessageBox.Show("Fail to generate auto gcp.");
    return;
}
else
{
    double xi, yi, xr, yr, corr;
    xi = yi = xr = yr = corr = 0.0;
    gcpSets = new XGCPSets();
    for (int i = 0; i < genPMAG.GetSize(); i++)
    {
        genPMAG.GetAt(i, ref xi, ref yi, ref xr, ref yr, ref corr);
        XGCP newGcp = new XGCP();
        newGcp.imgCoord.x = xi;
        newGcp.imgCoord.y = yi;

        newGcp.refCoord.x = xr;
        newGcp.refCoord.y = yr;
        gcpSets.AddGCP(ref newGcp);
    }
}

double minx = double.MaxValue;
double miny = double.MaxValue;
double maxx = double.MinValue;
double maxy = double.MinValue;
for (int i = 0; i < gcpSets.GetNumGCP(); i++)
{
    XGCP gcp = gcpSets.GetGCP(i);
    minx = gcp.refCoord.x < minx ? gcp.refCoord.x : minx;
    miny = gcp.refCoord.y < miny ? gcp.refCoord.y : miny;
    maxx = gcp.refCoord.x > maxx ? gcp.refCoord.x : maxx;
    maxy = gcp.refCoord.y > maxy ? gcp.refCoord.y : maxy;
}

double wminx = minx;
double wmaxx = maxx;
double wminy = maxy;
double wmaxy = miny;
bandRef.PixelToWorld(ref wminx, ref wminy);
bandRef.PixelToWorld(ref wmaxx, ref wmaxy);

double psx = 1.0;
double psy = 1.0;
XBandParamLocalWarp param = new XBandParamLocalWarp();
param.SrcBand = bandSrc;
param.RefBand = bandRef;
param.SR = bandRef.SR;
param.ResampleMethod = eResampleMethod.BiLinear;
param.GcpSets = gcpSets;
param.BlankValue = 0;
param.ULX = wminx;
param.ULY = wmaxy;
param.SizeX = (int)((wmaxx - wminx) / psx);
param.SizeY = (int)((wmaxy - wminy) / psy);
param.PixelSizeX = 1.0;
param.PixelSizeY = 1.0;

XDMBandLocalWarp bandLocalWarp = new XDMBandLocalWarp();
bandLocalWarp.SetInputParam(ref param);

if (bandLocalWarp.Preprocess(null))
{
    // create XRSSaveFile to save realtime band(XDMBandXXXX)
    XRSSaveFile fileSave = new XRSSaveFile();
    XDMBand bandCast = (XDMBand)bandLocalWarp;

    fileSave.AddBand(ref bandCast);

    // Save output file
    String strFilePathSave = @"D:\Sample\localwarp.xdm";
    if (RasterIO.Export(ref fileSave, strFilePathSave, "XDM", out strError, null))
    {
        MessageBox.Show("성공");
        return;
    }
}
See Also