介绍
.flo 文件时光流估计结果保存和读取的文件对象，按照大咖们的惯例，.flo文件的组成包括以下成分：
PIEH //（以utf-8的格式）
flo.shape[1] flow.shape[0] //(光流图的长宽，int32数据以二进制格式）
flo.data //(光流图数据， float32数据以二进制格式）
……C++读写 .flo
#include "stdafx.h"
#include <fstream>
#include <iostream>
#include <opencv2/highgui/highgui.hpp>
#define TAR 202021.250
void flowrite(cv::String addr, cv::Mat &flo) {
cv::Size imgsize = flo.size();
int high = imgsize.height;
int width = imgsize.width;
std::ofstream fout(addr,std::ios::binary);
char * data = flo.ptr<char>(0);
if (!fout) { return; }
else {
fout << "PIEH";
fout.write((char*)&width, sizeof(int));
fout.write((char*)&high, sizeof(int));
fout.write(data, high * width * 2 * sizeof(float));
}
fout.close();
}
void floread(cv::String addr, cv::Mat &flo) {
std::ifstream fin(addr, std::ios::binary);
char buffer[sizeof(float)];
fin.read(buffer, sizeof(float));
float tar = ((float*)buffer)[0];
if (tar != TAR) {
fin.close();
return;
}
fin.read(buffer, sizeof(int));
int high = ((int*)buffer)[0];
fin.read(buffer, sizeof(int));
int width = ((int*)buffer)[0];
flo = cv::Mat(cv::Size(high, width), CV_32FC2);
for (int i = 0; i < width; i++) {
for (int j = 0; j < high; j++) {
if (!fin.eof()) {
float * data = flo.ptr<float>(i, j);
fin.read(buffer, sizeof(float));
data[0] = ((float*)buffer)[0];
fin.read(buffer, sizeof(float));
data[1] = ((float*)buffer)[0];
}
}
}
fin.close();
}