加入收藏 | 设为首页 | 会员中心 | 我要投稿 李大同 （https://www.lidatong.com.cn/）- 科技、建站、经验、云计算、5G、大数据,站长网!
当前位置： 首页 > 百科 > 正文

OpenCv的xml读写（opencv教程大全）

发布时间：2020-12-16 08:23:51 所属栏目：百科 来源：网络整理
导读：opencv教程专栏：http://blog.csdn.net/Augusdi/article/category/747412 int sub_test_opencv_xml_write( void ) { //创建文件存储对象 CvFileStorage*fs=cvOpenFileStorage( "test.xml" ,CV_STORAGE_WRITE); //写注释 cvWriteComment(fs, "测试写XML文件"

opencv教程专栏：http://blog.csdn.net/Augusdi/article/category/747412

  1. intsub_test_opencv_xml_write(void)
  2. {
  3. //创建文件存储对象
  4. CvFileStorage*fs=cvOpenFileStorage("test.xml",CV_STORAGE_WRITE);
  5. //写注释
  6. cvWriteComment(fs,"测试写XML文件",1);
  8. //开始写结构，类型是图map，也就是有名字的无序节点集合
  9. cvStartWriteStruct(fs,"Employee",CV_NODE_MAP);
  10. //注释
  11. cvWriteComment(fs,"MAP类型，姓名，年龄，薪水",1);
  12. //姓名
  13. cvWriteString(fs,"name","刘越");
  14. //年龄
  15. cvWriteInt(fs,"age",18);
  16. //薪水
  17. cvWriteReal(fs,"salary",2780.3);
  18. //销售次数
  19. "sales_count",4);
  20. //销售具体数据
  21. intsales_record[]={30000,4200,50090};
  22. //注释
  23. "SEQ类型，销售记录",0); background-color:inherit">//开始写结构，类型是序列sequence，无名字的有序节点集合
  24. cvStartWriteStruct(fs,"sales_record",CV_NODE_SEQ);
  25. //前3条销售记录
  26. cvWriteRawData(fs,sales_record,3,"i");
  27. //第4条销售记录，注意无名字
  28. cvWriteInt(fs,6100);
  29. //结束
  30. cvEndWriteStruct(fs);
  31. }
  32. "MAP类型，亲友",0); background-color:inherit">//开始
  33. "Parent",CV_NODE_MAP);
  34. //父亲
  35. cvWriteString(fs,"father","杨舜");
  36. //母亲
  37. "mother","王娟");
  38. //结束
  39. cvEndWriteStruct(fs);
  40. //释放文件存储对象
  41. cvReleaseFileStorage(&fs);
  42. }
  43. intsub_test_opencv_xml_read(void)
  44. {
  45. //文件节点
  46. CvFileNode*node,*node2;
  47. char*str;
  48. intcount;
  49. int*d;
  50. //cve_dm.debug_break();
  51. //打开XML文件
  52. //获得第一层数据节点
  53. node=cvGetFileNodeByName(fs,"Employee");
  54. str=cvReadStringByName(fs,node,"name");
  55. printf("n姓名=%s",str);
  56. printf("n年龄=%d",cvReadIntByName(fs,"age"));
  57. printf("n薪水=%g",cvReadRealByName(fs,"salary"));
  58. count=cvReadIntByName(fs,"sales_count");
  59. printf("n销售%d条",count);
  60. d=cvAlloc(sizeof(int)*count);
  61. if(d)
  62. inti;
  63. node2=cvGetFileNodeByName(fs,"sales_record");
  64. if(node2)
  65. cvReadRawData(fs,node2,d,108); list-style:decimal-leading-zero outside; color:inherit; line-height:20px; margin:0px!important; padding:0px 3px 0px 10px!important"> printf("n销售记录=");
  66. for(i=0;i<count;i++)
  67. printf("%d,",d[i]);
  68. cvFree(&d);
  69. //获得第二层节点
  70. "Parent");
  71. printf("n根节点=%s",cvGetFileNodeName(node));
  72. str=cvReadStringByName(fs,"father");
  73. printf("n父亲=%s",str);
  74. "mother");
  75. printf("n母亲=%s",248)"> }

1.写XMl文件,

[html] view plain copy
    voidCrecognitionDlg::storeDirectoryFaces(){
  1. CvFileStorage*fileStorage;
  2. fileStorage=cvOpenFileStorage("directoryInfo.xml",CV_STORAGE_WRITE);
  3. cvWriteInt(fileStorage,"nFaces",indexFaces.size());
  4. cvStartWriteStruct(fileStorage,"CVFaceRecog",CV_NODE_MAP);
  5. for(size_ti=0;i<indexFaces.size();i++)
  6. charperson[100];
  7. sprintf(person,"person_%d",(i+1));//必须区分开，否则读的时候会出问题
  8. cvStartWriteStruct(fileStorage,person,CV_NODE_MAP);
  9. cvWriteInt(fileStorage,"index",indexFaces.at(i));
  10. cvWriteString(fileStorage,"name",namePerson.at(i));
  11. cvWriteString(fileStorage,"directory",pathFaces.at(i));
  12. cvEndWriteStruct(fileStorage);
  13. cvReleaseFileStorage(&fileStorage);
  14. }

写完的内容如下：

copy
    <?xmlversion="1.0"?>
  1. opencv_storage>
  2. nFaces>3</>
  3. CVFaceRecogperson_1index>0name>aaadirectory>C:Pictureskobe>person_2>1>bbb>C:PicturesLiperson_3>2>ccc>C:PicturesSun>

2.读XML

[cpp] copy
    intCrecognitionDlg::loadDirectoryFaces(){
  1. CvFileStorage*fileStorage=NULL;
  2. inti;
  3. CvSeq*seq;
  4. CvSeqReaderreader;
  5. fileStorage=cvOpenFileStorage("directoryInfo.xml",108); list-style:decimal-leading-zero outside; color:inherit; line-height:20px; margin:0px!important; padding:0px 3px 0px 10px!important"> if(!fileStorage){
  6. return0;
  7. namePerson.clear();
  8. pathFaces.clear();
  9. indexFaces.clear();
  10. CvFileNode*root=cvGetRootFileNode(fileStorage,0);
  11. CvFileNode*data=cvGetFileNodeByName(fileStorage,root,"CVFaceRecog");
  12. seq=data->data.seq;
  13. cvStartReadSeq(seq,&reader,0);
  14. intnFaces=cvReadIntByName(fileStorage,"nFaces",0);
  15. for(i=0;i<nFaces;i++)
  16. CvFileNode*pt=(CvFileNode*)reader.ptr;
  17. namePerson.push_back(cvReadStringByName(fileStorage,pt,0));
  18. pathFaces.push_back(cvReadStringByName(fileStorage,"directory",0));
  19. indexFaces.push_back(cvReadIntByName(fileStorage,"index",248)"> CV_NEXT_SEQ_ELEM(seq->elem_size,reader);
  20. cvReleaseFileStorage(&fileStorage);
  21. return0;
  22. }
copy
    FileStoragefs("test.yml",FileStorage::WRITE);
  1. fs<<"frameCount"<<5;
  2. time_trawtime;time(&rawtime);
  3. fs<<"calibrationDate"<<asctime(localtime(&rawtime));
  4. MatcameraMatrix=(Mat_<double>(3,3)<<1000,320,1000,240,1);//又一种Mat初始化方式
  5. MatdistCoeffs=(Mat_<double>(5,1)<<0.1,0.01,-0.001,0);
  6. fs<<"cameraMatrix"<<cameraMatrix<<"distCoeffs"<<distCoeffs;
  8. //features为一个大小为3的向量,其中每个元素由随机数x,y和大小为8的uchar数组组成
  9. fs<<"features"<<"[";
  10. for(inti=0;i<3;i++)
  11. intx=rand()%640;
  12. inty=rand()%480;
  13. ucharlbp=rand()%256;
  14. fs<<"{:"<<"x"<<x<<"y"<<y<<"lbp"<<"[:";
  15. intj=0;j<8;j++)
  16. fs<<((lbp>>j)&1);
  17. fs<<"]"<<"}";
  18. fs<<"]";
  19. fs.release();
copy
    }

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!
    相关内容
      推荐文章
        站长推荐
        热点阅读

          【免责声明】本站内容转载自互联网，其发布内容言论不代表本站观点，如果其链接、内容的侵犯您的权益，烦请提交相关链接至邮箱bqsm@foxmail.com我们将及时予以处理。

          建议您使用1920×1080分辨率、谷歌浏览器Google Chrome、Microsoft Edge以获得本站的最佳浏览效果

          Copygight © 2008-2022 https://www.lidatong.com.cn/ All Rights Reserved. 李大同