Putting it all together - the main() function

Over the course of this chapter, we have implemented for different components of our LBP feature extraction system:

1. Computing the LBP code for each pixel.

2. Checking whether a given LBP code corresponds to a uniform pattern code.

3. Computing the spatially enhanced LBP histogram.

The code that we share in this section brings everything together and assembles it under the umbrella of a main() function:

#include <iostream> 
 
#include "opencv2/highgui/highgui.hpp"  
#include "opencv2/core/core.hpp" 
 
using namespace std; 
using namespace cv; 
 
int main(int argc, char** argv) 
{ 

This is to remind users that a command-line argument is expected:

    if(argc != 2) 
    { 
        cout << "USAGE: ./lbp_image [IMAGE]\n"; 
        return 1; 
    } 
    const string imagepath = argv[1]; 
    Mat src = imread(imagepath, CV_LOAD_IMAGE_GRAYSCALE); 
     

The next...