主要是对内存数据自动编解码
???string fname = "D:/image.jpg"; ???//! 以二进制流方式读取图片到内存 ???FILE* pFile = fopen(fname.c_str(), "rb"); ???fseek(pFile, 0, SEEK_END); ???long lSize = ftell(pFile); ???rewind(pFile); ???char* pData = new char[lSize]; ???fread(pData, sizeof(char), lSize, pFile); ???fclose(pFile);
???//! 解码内存数据，变成cv::Mat数据 ???cv::Mat img_decode; ???vector<uchar> data; ???for (int i = 0; i < lSize; ++i){ ???????data.push_back(pData[i]); ???} ???img_decode = cv::imdecode(data, CV_LOAD_IMAGE_COLOR); ???cv::flip(img_decode, img_decode, -1); ???img_decode.channels();
???//! 将cv::Mat数据编码成数据流 ???vector<unsigned char> img_encode; ???cv::imencode(".jpg", img_decode, img_encode); ???unsigned char *encode_data = new unsigned char[lSize]; ???for (int i = 0; i<lSize; i++){ ???????encode_data[i] = img_encode[i]; ???} ???????
opencv imdecode和imencode用法
原文地址：https://www.cnblogs.com/haiyang21/p/9392399.html