C++版本的。程序首先读入一个图片。然后encode,之后把encode后的内容写入文件(实际应用可以发送到网络)。
第二步,从文件读取encode的内容。然后解码decode。转换为mat格式,显示出来。
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <iostream>
#include <sstream>
#include <string>
#include <opencv2/opencv.hpp>
#include <vector>
using namespace boost::filesystem;
namespace newfs = boost::filesystem;
using namespace cv;
int main(int argc, char ** argv)
{
cv::Mat img_encode;
img_encode = imread("../res/test.png", CV_LOAD_IMAGE_COLOR);
//encode image and save to file
std::vector<uchar> data_encode;
imencode(".png", img_encode, data_encode);
std::string str_encode(data_encode.begin(), data_encode.end());
path p("../res/imgencode_cplus.txt");
newfs::ofstream ofs(p);
assert(ofs.is_open());
ofs << str_encode;
ofs.flush();
ofs.close();
//read image encode file and display
newfs::fstream ifs(p);
assert(ifs.is_open());
std::stringstream sstr;
while(ifs >> sstr.rdbuf());
ifs.close();
Mat img_decode;
std::string str_tmp = sstr.str();
std::vector<uchar> data(str_tmp.begin(), str_tmp.end());
img_decode = imdecode(data, CV_LOAD_IMAGE_COLOR);
imshow("pic",img_decode);
cvWaitKey(10000);
return 0;
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