[fastNlMeansDenoising image filter]#opencv #cpp #img_proc

imageFilter.cpp

//============================================================================
// Name        : imageFilter.cpp
// Author      : octoberwu
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/photo/photo.hpp>
#include <iostream>

using namespace cv;
using namespace std;

int main( int argc, char** argv )
{
    if( argc != 2)
    {
     cout <<" Usage: display_image ImageToLoadAndDisplay" << endl;
     return -1;
    }

    Mat image;
    Mat dstImg;
    image = imread(argv[1], CV_LOAD_IMAGE_COLOR);   // Read the file

    if(! image.data )                              // Check for invalid input
    {
        cout <<  "Could not open or find the image" << std::endl ;
        return -1;
    }

    Mat grey;
    cvtColor(image, grey, CV_BGR2GRAY);
    fastNlMeansDenoising(grey, dstImg, 3, 7, 21);

    namedWindow("Original Gray one", WINDOW_AUTOSIZE);
    imshow( "Original Gray one", grey);


    namedWindow( "Display window", WINDOW_AUTOSIZE );// Create a window for display.
    imshow( "Display window", dstImg );                   // Show our image inside it.


    waitKey(0);                                          // Wait for a keystroke in the window
    return 0;
}