DenseOpticalFlow（），createOptFlow_DualTVL1稠密光流

liangchunjiang

于 2018-04-11 15:51:58 发布

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分类专栏： opencv 文章标签： createOptFlow_DualTVL1 稠密光流

本文链接：https://blog.youkuaiyun.com/liangchunjiang/article/details/79897651

本文介绍了如何利用DenseOpticalFlow中的createOptFlow_DualTVL1函数来实现稠密光流计算，提供了一个详细的示例代码，帮助理解其工作原理。

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（1）DenseOpticalFlow示例代码

#include <iostream>
#include <fstream>

#include "opencv2/video/tracking.hpp"
#include "opencv2/highgui/highgui.hpp"

using namespace cv;
using namespace std;

inline bool isFlowCorrect(Point2f u)
{
    return !cvIsNaN(u.x) && !cvIsNaN(u.y) && fabs(u.x) < 1e9 && fabs(u.y) < 1e9;
}

static Vec3b computeColor(float fx, float fy)
{
    static bool first = true;

    // relative lengths of color transitions:
    // these are chosen based on perceptual similarity
    // (e.g. one can distinguish more shades between red and yellow
    //  than between yellow and green)
    const int RY = 15;
    const int YG = 6;
    const int GC = 4;
    const int CB = 11;
    const int BM = 13;
    const int MR = 6;
    const int NCOLS = RY + YG + GC + CB + BM + MR;
    static Vec3i colorWheel[NCOLS];

    if (first)
    {
        int k = 0;

        for (int i = 0; i < RY; ++i, ++k)