《学习OpenCV》练习题第三章第八题a

#include <highgui.h>#include <cv.h>#include <stdio.h>#pragma comment (lib,"opencv_calib3d231d.lib")#pragma comment (lib,"opencv_contrib231d.lib")#pragma comment (lib,"opencv_core231d.lib")#pragma comment (lib,"opencv_features2d231d.lib")#pragma comment (lib,"opencv_flann231d.lib")#pragma comment (lib,"opencv_gpu231d.lib")#pragma comment (lib,"opencv_haartraining_engined.lib")#pragma comment (lib,"opencv_highgui231d.lib")#pragma comment (lib,"opencv_imgproc231d.lib")#pragma comment (lib,"opencv_legacy231d.lib")#pragma comment (lib,"opencv_ml231d.lib")#pragma comment (lib,"opencv_objdetect231d.lib")#pragma comment (lib,"opencv_ts231d.lib")#pragma comment (lib,"opencv_video231d.lib")/* *《学习OpenCV》第三章第八题a * 完成时间：19:12 4/4 星期四  2013 */typedef struct my_struct{int i;CvPoint point;CvRect rect;} MyStruct;void write_my_struct(CvFileStorage * fs, const char* name, my_struct*  ms){//开始写数据cvStartWriteStruct(fs, name, 6);//写入一个 整数cvStartWriteStruct(fs,"integer",CV_NODE_SEQ);cvWriteInt(fs,NULL,ms->i);cvEndWriteStruct(fs);//写入cvpoint结构cvStartWriteStruct(fs,"CvPoint",CV_NODE_SEQ);cvWriteInt(fs,NULL,ms->point.x);cvWriteInt(fs,NULL,ms->point.y);cvEndWriteStruct(fs);    //写入rect结构体cvStartWriteStruct(fs,"CvRect",CV_NODE_SEQ);cvWriteInt(fs,NULL,ms->rect.x);cvWriteInt(fs,NULL,ms->rect.y);cvWriteInt(fs,NULL,ms->rect.height);cvWriteInt(fs,NULL,ms->rect.width);cvEndWriteStruct(fs);     //结束写数据cvEndWriteStruct(fs);}void read_my_struct(CvFileStorage* fs, CvFileNode* ms_node, my_struct* ms){// 读第一个整数// 注意：这里应使用node->data.i的value来读取Integerint i = cvGetFileNodeByName(fs, ms_node, "integer")->data.i;ms->i = i;// 读CvPoint结构CvSeq *s1 = cvGetFileNodeByName(fs, ms_node, "CvPoint")->data.seq;CvPoint point;point.x= cvReadInt((CvFileNode*)cvGetSeqElem(s1,0));point.y= cvReadInt((CvFileNode*)cvGetSeqElem(s1,1));ms->point = point;// 读取CvRect结构CvSeq *s2 = cvGetFileNodeByName(fs, ms_node, "CvRect")->data.seq;CvRect rect;rect.x=cvReadInt((CvFileNode*)cvGetSeqElem(s2, 0));rect.y=cvReadInt((CvFileNode*)cvGetSeqElem(s2, 1));rect.width=cvReadInt((CvFileNode*)cvGetSeqElem(s2, 3));rect.height=cvReadInt((CvFileNode*)cvGetSeqElem(s2, 2));ms->rect = rect;}// 将MyStruct的值显示出来void ShowStructValue(MyStruct* pvalue){printf("integer:%d\n", pvalue->i);printf("CvPoint: (%d, %d)\n", pvalue->point.x, pvalue->point.y );printf("CvRect: h-->%d\tw-->%d\t(%d, %d)\n", pvalue->rect.height, pvalue->rect.width, pvalue->rect.x, pvalue->rect.y);}int main(){/* 写数据部分 */MyStruct struct_1; struct_1.i = 10;struct_1.point = cvPoint(50, 145);struct_1.rect = cvRect(2, 2, 400, 400);CvFileStorage* fs = cvOpenFileStorage("My_struct.xml", 0, CV_STORAGE_WRITE);write_my_struct(fs, "my_struct", &struct_1);cvReleaseFileStorage(&fs);/* 读数据部分 */fs = cvOpenFileStorage("My_struct.xml", NULL, CV_STORAGE_READ );MyStruct struct_2; CvFileNode *pnode = cvGetFileNodeByName(fs, NULL, "my_struct");read_my_struct( fs, pnode, &struct_2 );// 显示printf("---------------- Write -----------------\n");ShowStructValue( & struct_1 );printf("---------------- Read -------------------\n");ShowStructValue( & struct_2);cvReleaseFileStorage(&fs);return 0;}

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