C++读取labelimg的标注xml文件内容
C++读取labelimg的标注xml文件内容
该xml文件为labelImg.exe生成，通过C++获取到该文件中的标签名字与位置，然后保存到容器中供后续方便调用。
1、下载库tinyxml；https://sourceforge.net/projects/tinyxml/
2、将tinyxml.h、tinystr.h、tinystr.cpp、tinyxml.cpp、tinyxmlerror.cpp、tinyxmlparser.cpp这6个文件拷贝到工程下；
3、引入两个头文件，#include "tinystr.h"，#include "tinyxml.h"；
1 #include <iostream> 2 #include <opencv.hpp> 3 #include <fstream> 4 #include <vector> 5 #include <map> 6 #include <string> 7 #include "tinystr.h" 8 #include "tinyxml.h" 9 10 using namespace std; 11 using namespace cv; 12 13 typedef vector<pair<std::string, cv::Rect>> vecNameLoc; 14 vecNameLoc m_boltCentRects, m_boltCheckRects; 15 vecNameLoc m_boardCheckRects, m_posTemplRects, m_angleTemplRects, m_maskTemplRects; 16 typedef map<std::string, cv::Rect> mapNameLoc; 17 mapNameLoc m_mapTemplRectsImg; 18 mapNameLoc m_mapTemplRectsMain; 19 20 int readLabelFromXML(string path) 21 { 22 TiXmlDocument doc;//申明一个文档类型变量，用来存储读取的xml文档 23 if (!doc.LoadFile(path.c_str())) //检测xml文档是否存在 24 { 25 cerr << doc.ErrorDesc() << endl; 26 } 27 TiXmlElement* annotation = doc.FirstChildElement();//指向xml文档的根元素 28 if (annotation == NULL)//检测根元素存在性 29 { 30 cerr << "Failed to load file: No root element." << endl; 31 doc.Clear(); 32 return -1; 33 } 34 TiXmlElement* object = annotation->FirstChildElement(); // xml的id 根节点下第一个子节点 35 object = object->NextSiblingElement("object"); 36 while (object != NULL) 37 { 38 TiXmlElement* nameElement = object->FirstChildElement(); 39 string name = nameElement->GetText(); 40 TiXmlElement* bndbox = nameElement->NextSiblingElement("bndbox"); 41 TiXmlElement* xmin = bndbox->FirstChildElement(); 42 string xminValue = xmin->GetText(); 43 TiXmlElement* ymin = xmin->NextSiblingElement(); 44 string yminValue = ymin->GetText(); 45 TiXmlElement* xmax = ymin->NextSiblingElement(); 46 string xmaxValue = xmax->GetText(); 47 TiXmlElement* ymax = xmax->NextSiblingElement(); 48 string ymaxValue = ymax->GetText(); 49 Rect rect(Point(stoi(xminValue), stoi(yminValue)), Point(stoi(xmaxValue), stoi(ymaxValue))); 50 m_mapTemplRectsImg[name] = rect; 51 m_mapTemplRectsMain[name] = rect; 52 if (name.find("pos") != string::npos && name.find("pos_net") == string::npos) 53 { 54 m_posTemplRects.push_back(std::pair<string, cv::Rect>(name, rect)); 55 } 56 else if (name.find("angle") != string::npos || name.find("rot") != string::npos) 57 { 58 m_angleTemplRects.push_back(std::pair<string, cv::Rect>(name, rect)); 59 } 60 else if (name.find("board") != string::npos || name.find("sim") != string::npos || name.find("plate") != string::npos) 61 { 62 m_boardCheckRects.push_back(std::pair<string, cv::Rect>(name, rect)); 63 } 64 else if (name.find("bolt") != string::npos && name.find("checkbolt") == string::npos) 65 { 66 m_boltCentRects.push_back(std::pair<string, cv::Rect>(name, rect)); 67 } 68 else if (name.find("checkbolt") != string::npos) 69 { 70 m_boltCheckRects.push_back(std::pair<string, cv::Rect>(name, rect)); 71 } 72 else if (name.find("mask") != string::npos) 73 { 74 m_maskTemplRects.push_back(std::pair<string, cv::Rect>(name, rect)); 75 } 76 else 77 { 78 if (name.find("power") != string::npos) 79 { 80 continue; 81 } 82 } 83 object = object->NextSiblingElement("object"); 84 } 85 //按名称排序 86 std::sort(m_boltCentRects.begin(), m_boltCentRects.end(), [](auto v1, auto v2) {return v1.first < v2.first; }); 87 std::sort(m_boltCheckRects.begin(), m_boltCheckRects.end(), [](auto v1, auto v2) {return v1.first < v2.first; }); 88 return 0; 89 } 90 91 int main() 92 { 93 readLabelFromXML("test.xml"); 94 return 0; 95 } 96 97
1 <annotation> 2 <folder>XXX</folder> 3 <filename>XXX.png</filename> 4 <path>D:/XXX.png</path> 5 <source> 6 <database>Unknown</database> 7 </source> 8 <size> 9 <width>2309</width> 10 <height>4647</height> 11 <depth>1</depth> 12 </size> 13 <segmented>0</segmented> 14 <object> 15 <name>pos_rear_cam</name> 16 <pose>Unspecified</pose> 17 <truncated>0</truncated> 18 <difficult>0</difficult> 19 <bndbox> 20 <xmin>190</xmin> 21 <ymin>205</ymin> 22 <xmax>572</xmax> 23 <ymax>547</ymax> 24 </bndbox> 25 </object> 26 <object> 27 <name>pos_key_up</name> 28 <pose>Unspecified</pose> 29 <truncated>0</truncated> 30 <difficult>0</difficult> 31 <bndbox> 32 <xmin>2087</xmin> 33 <ymin>1011</ymin> 34 <xmax>2168</xmax> 35 <ymax>1356</ymax> 36 </bndbox> 37 </object> 38 <object> 39 <name>pos_key_down</name> 40 <pose>Unspecified</pose> 41 <truncated>0</truncated> 42 <difficult>0</difficult> 43 <bndbox> 44 <xmin>2093</xmin> 45 <ymin>1426</ymin> 46 <xmax>2176</xmax> 47 <ymax>1771</ymax> 48 </bndbox> 49 </object> 50 <object> 51 <name>pos_screen_b5</name> 52 <pose>Unspecified</pose> 53 <truncated>0</truncated> 54 <difficult>0</difficult> 55 <bndbox> 56 <xmin>128</xmin> 57 <ymin>3044</ymin> 58 <xmax>178</xmax> 59 <ymax>3136</ymax> 60 </bndbox> 61 </object> 62 <object> 63 <name>pos_screw_l_down</name> 64 <pose>Unspecified</pose> 65 <truncated>0</truncated> 66 <difficult>0</difficult> 67 <bndbox> 68 <xmin>912</xmin> 69 <ymin>4516</ymin> 70 <xmax>953</xmax> 71 <ymax>4594</ymax> 72 </bndbox> 73 </object> 74 <object> 75 <name>pos_lighting</name> 76 <pose>Unspecified</pose> 77 <truncated>0</truncated> 78 <difficult>0</difficult> 79 <bndbox> 80 <xmin>997</xmin> 81 <ymin>4525</ymin> 82 <xmax>1282</xmax> 83 <ymax>4597</ymax> 84 </bndbox> 85 </object> 86 <object> 87 <name>pos_motor</name> 88 <pose>Unspecified</pose> 89 <truncated>0</truncated> 90 <difficult>0</difficult> 91 <bndbox> 92 <xmin>929</xmin> 93 <ymin>3849</ymin> 94 <xmax>2039</xmax> 95 <ymax>4149</ymax> 96 </bndbox> 97 </object> 98 <object> 99 <name>board_main_1</name> 100 <pose>Unspecified</pose> 101 <truncated>0</truncated> 102 <difficult>0</difficult> 103 <bndbox> 104 <xmin>218</xmin> 105 <ymin>752</ymin> 106 <xmax>777</xmax> 107 <ymax>1383</ymax> 108 </bndbox> 109 </object> 110 <object> 111 <name>board_main_3</name> 112 <pose>Unspecified</pose> 113 <truncated>0</truncated> 114 <difficult>0</difficult> 115 <bndbox> 116 <xmin>197</xmin> 117 <ymin>2339</ymin> 118 <xmax>467</xmax> 119 <ymax>2784</ymax> 120 </bndbox> 121 </object> 122 <object> 123 <name>pos_mic</name> 124 <pose>Unspecified</pose> 125 <truncated>0</truncated> 126 <difficult>0</difficult> 127 <bndbox> 128 <xmin>594</xmin> 129 <ymin>281</ymin> 130 <xmax>667</xmax> 131 <ymax>399</ymax> 132 </bndbox> 133 </object> 134 <object> 135 <name>pos_checknet_l</name> 136 <pose>Unspecified</pose> 137 <truncated>0</truncated> 138 <difficult>0</difficult> 139 <bndbox> 140 <xmin>377</xmin> 141 <ymin>4537</ymin> 142 <xmax>803</xmax> 143 <ymax>4605</ymax> 144 </bndbox> 145 </object> 146 <object> 147 <name>pos_checknet_r</name> 148 <pose>Unspecified</pose> 149 <truncated>0</truncated> 150 <difficult>0</difficult> 151 <bndbox> 152 <xmin>1483</xmin> 153 <ymin>4534</ymin> 154 <xmax>1913</xmax> 155 <ymax>4598</ymax> 156 </bndbox> 157 </object> 158 <object> 159 <name>bolt_b1</name> 160 <pose>Unspecified</pose> 161 <truncated>0</truncated> 162 <difficult>0</difficult> 163 <bndbox> 164 <xmin>1893</xmin> 165 <ymin>609</ymin> 166 <xmax>1928</xmax> 167 <ymax>641</ymax> 168 </bndbox> 169 </object> 170 <object> 171 <name>checkbolt_b2</name> 172 <pose>Unspecified</pose> 173 <truncated>0</truncated> 174 <difficult>0</difficult> 175 <bndbox> 176 <xmin>1321</xmin> 177 <ymin>577</ymin> 178 <xmax>1420</xmax> 179 <ymax>671</ymax> 180 </bndbox> 181 </object> 182 <object> 183 <name>checkbolt_b3</name> 184 <pose>Unspecified</pose> 185 <truncated>0</truncated> 186 <difficult>0</difficult> 187 <bndbox> 188 <xmin>921</xmin> 189 <ymin>579</ymin> 190 <xmax>1019</xmax> 191 <ymax>674</ymax> 192 </bndbox> 193 </object> 194 <object> 195 <name>checkbolt_b4</name> 196 <pose>Unspecified</pose> 197 <truncated>0</truncated> 198 <difficult>0</difficult> 199 <bndbox> 200 <xmin>181</xmin> 201 <ymin>609</ymin> 202 <xmax>273</xmax> 203 <ymax>699</ymax> 204 </bndbox> 205 </object> 206 207 </annotation>
