[求助]导入图片怎么进行配准?

<P>有一张.jpg图片, 比如说宽高分别是500, 500。 </P>
<P>以图片左上角为基准，我想将此图片配准如下:</P>
<TABLE border=1 cellSpacing=2 borderColor=#cccccc cellPadding=3 width="100%" bgColor=#ffffff align=center>

<TR>
<TD> 像素点坐标</TD>
<TD> 经纬度坐标</TD>
<TR>
<TD> (0, 0)</TD>
<TD> (0, 0)</TD>
<TR>
<TD> (0, 500)</TD>
<TD> (0, 1)</TD>
<TR>
<TD> (500, 500)</TD>
<TD> (1, 1)</TD></TR></TABLE>
<P>由于初次使用Arcgis, 不是很懂。网上google了下，以下是我的实现代码。运行结果是MapControl上没任何显示。不知道为什么？代码逻辑很简单，麻烦大家帮我看看。谢谢了。</P>
<DIV class=HtmlCode>//三点配准<BR>{<BR>    IGeoReferencePtr pGeoRef;<BR>    hr = pLayer.QueryInterface(__uuidof(IGeoReference), ;pGeoRef);<BR>    if(!SUCCEEDED(hr))<BR>       continue;
<P>    VARIANT_BOOL canGeoRef = false;<BR>    hr = pGeoRef->get_CanGeoRef(;canGeoRef);<BR>    if(!SUCCEEDED(hr) || !canGeoRef)<BR>       continue;<BR>    <BR>    IRasterPtr pRaster;<BR>    hr = pLayer->get_Raster(;pRaster);<BR>    if(!SUCCEEDED(hr))<BR>       continue;</P>
<P>    IRasterPropsPtr pRasterProps;<BR>    hr = pRaster.QueryInterface(__uuidof(IRasterProps), ;pRasterProps);<BR>    if(!SUCCEEDED(hr))<BR>     continue;</P>
<P>    long width, height;<BR>    hr = pRasterProps->get_Width(;width);<BR>    if(!SUCCEEDED(hr))<BR>     continue;<BR>    hr = pRasterProps->get_Height(;height);<BR>    if(!SUCCEEDED(hr))<BR>     continue;</P>
<P>    IPointCollectionPtr fromPts(CLSID_Polyline);</P>
<P>    IPointPtr fromPointLeftTop(CLSID_Point);<BR>    hr = fromPointLeftTop->PutCoords(0, 0);<BR>    hr = fromPts->AddPoint(fromPointLeftTop);</P>
<P>    IPointPtr fromPointLeftButtom(CLSID_Point);<BR>    hr = fromPointLeftButtom->PutCoords(0, height);<BR>    hr = fromPts->AddPoint(fromPointLeftTop);</P>
<P>    IPointPtr fromPointRightButtom(CLSID_Point);<BR>    hr = fromPointRightButtom->PutCoords(width, height);<BR>    hr = fromPts->AddPoint(fromPointRightButtom);</P>
<P><BR>    IPointCollectionPtr toPts(CLSID_Polyline);</P>
<P>    IPointPtr toPointLeftTop(CLSID_Point);<BR>    hr = toPointLeftTop->PutCoords(0, 0);<BR>    hr = toPts->AddPoint(toPointLeftTop);</P>
<P>    IPointPtr toPointLeftButtom(CLSID_Point);<BR>    hr = toPointLeftButtom->PutCoords(0, 1);<BR>    hr = toPts->AddPoint(toPointLeftButtom);</P>
<P>    IPointPtr toPointRightButtom(CLSID_Point);<BR>    hr = toPointRightButtom->PutCoords(1, 1);<BR>    hr = toPts->AddPoint(toPointRightButtom);</P>
<P>    hr = pGeoRef->Warp(fromPts, toPts, 0);<BR>    if(!SUCCEEDED(hr))<BR>     continue;</P>
<P>    hr = pGeoRef->Register();<BR>    if(!SUCCEEDED(hr))<BR>     continue;<BR>   }</P>
<P>   IMapControl4Ptr smpMapControl = GetView()->GetMapControl()->GetIMapControl4Ptr();<BR>   hr = smpMapControl->AddLayer(pLayer, 0);   <BR>   if(!SUCCEEDED(hr))<BR>    continue;</P></DIV>