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前言
FileStorage类介绍
FileStorage类是OpenCV封装的支持读写XML、JSON、YAML文件的工具类。有多个构造函数支持创建实例，最常用的创建方式如下：
cv::FileStorage::FileStorage(const String & filename,int flags,const String & encoding = String())
各个参数的解释意义如下：
filename 表示读写的文件名称
flags表示文件类型cv::FileStorage::Mode，当前支持的模式包含：
写入
读出
释放文件
C++代码演示
// 加载参数cv::FileStorage fs(fileName, cv::FileStorage::READ);if (!fs.isOpened()) {std::cout<< "could not find the parameters config file..." <return;}fs["onnxModelPath"] >> this->onnxModelPath;fs["labelmapPath"] >> this->labelmapPath;fs["score"] >> this->score;fs["confidence"] >> this->conf;fs["nms"] >> this->nms;fs["mode"] >> this->mode;fs["showFPS"] >> this->showFPS;fs["showLabel"] >> this->showLabel;fs["showBox"] >> this->showBox;fs["showMask"]>> this->showMask;fs.release();
// 保存参数cv::FileStorage fs(fileName, cv::FileStorage::WRITE);fs << "onnxModelPath" << this->onnxModelPath;fs << "labelmapPath" << this->labelmapPath;fs << "score" << this->score;fs << "confidence" << this->conf;fs << "nms" << this->nms;fs << "mode" << this->mode;fs << "showFPS" << this->showFPS;fs << "showMask" << this->showMask;fs << "showLabel" << this->showLabel;fs << "showBox" << this->showBox;fs.release();
Python代码演示
import cv2 as cv
param1 = 25
param2 = 0.25
param3 = "lena.jpg"
# 写文件
model_settings = cv.FileStorage("mytest.yaml", cv.FILE_STORAGE_WRITE)
model_settings.write('version', 'v1.0')
model_settings.write('author', 'gloomyfish')
model_settings.write('param1', param1)
model_settings.write('param2', param2)
model_settings.write('param3', param3)
model_settings.release()
# 读文件
cv_setting = cv.FileStorage("mytest.yaml", cv.FileStorage_READ)
param1 = cv_setting.getNode('param1').real()
param2 = cv_setting.getNode('param2').real()
param3 = cv_setting.getNode('param3').real()
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