opencv--把cv::Mat数据转为二进制数据的保存和读取
保存
#include <opencv2/opencv.hpp>
#include <iostream>
#include <fstream>
void saveMatToBinary(const cv::Mat& mat, const std::string& filename) {
std::ofstream ofs(filename, std::ios::binary);
if (!ofs.is_open()) {
std::cerr << "Failed to open file for writing: " << filename << std::endl;
return;
}
// Write the matrix type and size
int type = mat.type();
int rows = mat.rows;
int cols = mat.cols;
ofs.write((char*)&type, sizeof(type));
ofs.write((char*)&rows, sizeof(rows));
ofs.write((char*)&cols, sizeof(cols));
// Write the matrix data
ofs.write((char*)mat.data, mat.total() * mat.elemSize());
ofs.close();
}
int main() {
cv::Mat image = cv::imread("path_to_your_image.jpg");
if (image.empty()) {
std::cerr << "Failed to load image" << std::endl;
return -1;
}
saveMatToBinary(image, "output.bin");
return 0;
}
读取
#include <opencv2/opencv.hpp>
#include <iostream>
#include <fstream>
cv::Mat loadMatFromBinary(const std::string& filename) {
std::ifstream ifs(filename, std::ios::binary);
if (!ifs.is_open()) {
std::cerr << "Failed to open file for reading: " << filename << std::endl;
return cv::Mat();
}
// Read the matrix type and size
int type, rows, cols;
ifs.read((char*)&type, sizeof(type));
ifs.read((char*)&rows, sizeof(rows));
ifs.read((char*)&cols, sizeof(cols));
// Create the matrix
cv::Mat mat(rows, cols, type);
// Read the matrix data
ifs.read((char*)mat.data, mat.total() * mat.elemSize());
ifs.close();
return mat;
}
int main() {
cv::Mat loadedImage = loadMatFromBinary("output.bin");
if (loadedImage.empty()) {
std::cerr << "Failed to load image from binary file" << std::endl;
return -1;
}
cv::imshow("Loaded Image", loadedImage);
cv::waitKey(0);
return 0;
}
原文地址:https://blog.csdn.net/weixin_42398658/article/details/140293558
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