OpenCV2.3.1读xml文件

主程序片段：

......

CvMat *mapx = cvCreateMat(ExpandHeight, ExpandWidth, CV_32FC1);
CvMat *mapy = cvCreateMat(ExpandHeight, ExpandWidth, CV_32FC1);

ReadMapXY(direct,mapx,mapy);
......



功能函数：
void ReadMapXY(Direct direct, CvMat *mapx, CvMat *mapy)
{
CvMat *mapx0 = cvCreateMat(ExpandHeight, ExpandWidth, CV_32FC1);
CvMat *mapy0 = cvCreateMat(ExpandHeight, ExpandWidth, CV_32FC1);


string mapx_xml = "MapMatrix\\mapx_" + ConvertDirectToString(direct);
string mapy_xml = "MapMatrix\\mapy_" + ConvertDirectToString(direct);
string mapx_xml_name = mapx_xml + ".xml";
string mapy_xml_name = mapy_xml + ".xml";

mapx0 = (CvMat*) cvLoad(mapx_xml_name.c_str());
mapy0 = (CvMat*) cvLoad(mapy_xml_name.c_str());

mapx->data.fl=mapx0->data.fl;   //非常重要，注意形参实参的返回关系
mapy->data.fl=mapy0->data.fl;
}