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#include <iostream> // for standard I/O
#include <string>   // for strings
#include <iomanip>  // for controlling float print precision
#include <sstream>  // string to number conversion#include <opencv2/imgproc/imgproc.hpp>  // Gaussian Blur
#include <opencv2/core/core.hpp>        // Basic OpenCV structures (cv::Mat, Scalar)
#include <opencv2/highgui/highgui.hpp>  // OpenCV window I/Ousing namespace std;
using namespace cv;double getPSNR ( const Mat& I1, const Mat& I2);
Scalar getMSSIM( const Mat& I1, const Mat& I2);
int main(int argc, char *argv[], char *window_name)
{if (argc != 5){cout << "Not enough parameters" << endl;return -1;}stringstream conv;const string sourceReference = argv[1],sourceCompareWith = argv[2];int psnrTriggerValue, delay;conv << argv[3] << endl << argv[4];       // put in the stringsconv >> psnrTriggerValue >> delay;// take out the numberschar c;int frameNum = -1;          // Frame counterVideoCapture captRefrnc(sourceReference),captUndTst(sourceCompareWith);if ( !captRefrnc.isOpened()){cout  << "Could not open reference " << sourceReference << endl;return -1;}if( !captUndTst.isOpened()){cout  << "Could not open case test " << sourceCompareWith << endl;return -1;}Size refS = Size((int) captRefrnc.get(CV_CAP_PROP_FRAME_WIDTH),(int) captRefrnc.get(CV_CAP_PROP_FRAME_HEIGHT)),uTSi = Size((int) captUndTst.get(CV_CAP_PROP_FRAME_WIDTH),(int) captUndTst.get(CV_CAP_PROP_FRAME_HEIGHT));if (refS != uTSi){cout << "Inputs have different size!!! Closing." << endl;return -1;}const char* WIN_UT = "Under Test";const char* WIN_RF = "Reference";// WindowsnamedWindow(WIN_RF, CV_WINDOW_AUTOSIZE );namedWindow(WIN_UT, CV_WINDOW_AUTOSIZE );cvMoveWindow(WIN_RF, 400       ,            0);      //750,  2 (bernat =0)cvMoveWindow(WIN_UT, refS.width,            0);      //1500, 2cout << "Reference frame resolution: Width=" << refS.width << "  Height=" << refS.height<< " of nr#: " << captRefrnc.get(CV_CAP_PROP_FRAME_COUNT) << endl;cout << "PSNR trigger value " <<setiosflags(ios::fixed) << setprecision(3) << psnrTriggerValue << endl;Mat frameReference, frameUnderTest;double psnrV;Scalar mssimV;while( true) //Show the image captured in the window and repeat{captRefrnc >> frameReference;captUndTst >> frameUnderTest;if( frameReference.empty()  || frameUnderTest.empty()){cout << " < < <  Game over!  > > > ";break;}++frameNum;cout <<"Frame:" << frameNum <<"# ";/ PSNR psnrV = getPSNR(frameReference,frameUnderTest);                 //get PSNRcout << setiosflags(ios::fixed) << setprecision(3) << psnrV << "dB"; MSSIM /if (psnrV < psnrTriggerValue && psnrV){mssimV = getMSSIM(frameReference,frameUnderTest);cout << " MSSIM: "<< " R " << setiosflags(ios::fixed) << setprecision(2) << mssimV.val[2] * 100 << "%"<< " G " << setiosflags(ios::fixed) << setprecision(2) << mssimV.val[1] * 100 << "%"<< " B " << setiosflags(ios::fixed) << setprecision(2) << mssimV.val[0] * 100 << "%";}cout << endl;// Show Image /imshow( WIN_RF, frameReference);imshow( WIN_UT, frameUnderTest);c = cvWaitKey(delay);if (c == 27) break;}return 0;
}double getPSNR(const Mat& I1, const Mat& I2)
{Mat s1;absdiff(I1, I2, s1);       // |I1 - I2|s1.convertTo(s1, CV_32F);  // cannot make a square on 8 bitss1 = s1.mul(s1);           // |I1 - I2|^2Scalar s = sum(s1);         // sum elements per channeldouble sse = s.val[0] + s.val[1] + s.val[2]; // sum channelsif( sse <= 1e-10) // for small values return zeroreturn 0;else{double  mse =sse /(double)(I1.channels() * I1.total());double psnr = 10.0*log10((255*255)/mse);return psnr;}
}Scalar getMSSIM( const Mat& i1, const Mat& i2)
{const double C1 = 6.5025, C2 = 58.5225;/***************************** INITS **********************************/int d     = CV_32F;Mat I1, I2;i1.convertTo(I1, d);           // cannot calculate on one byte large valuesi2.convertTo(I2, d);Mat I2_2   = I2.mul(I2);        // I2^2Mat I1_2   = I1.mul(I1);        // I1^2Mat I1_I2  = I1.mul(I2);        // I1 * I2/*************************** END INITS **********************************/Mat mu1, mu2;   // PRELIMINARY COMPUTINGGaussianBlur(I1, mu1, Size(11, 11), 1.5);GaussianBlur(I2, mu2, Size(11, 11), 1.5);Mat mu1_2   =   mu1.mul(mu1);Mat mu2_2   =   mu2.mul(mu2);Mat mu1_mu2 =   mu1.mul(mu2);Mat sigma1_2, sigma2_2, sigma12;GaussianBlur(I1_2, sigma1_2, Size(11, 11), 1.5);sigma1_2 -= mu1_2;GaussianBlur(I2_2, sigma2_2, Size(11, 11), 1.5);sigma2_2 -= mu2_2;GaussianBlur(I1_I2, sigma12, Size(11, 11), 1.5);sigma12 -= mu1_mu2;/ FORMULA Mat t1, t2, t3;t1 = 2 * mu1_mu2 + C1;t2 = 2 * sigma12 + C2;t3 = t1.mul(t2);              // t3 = ((2*mu1_mu2 + C1).*(2*sigma12 + C2))t1 = mu1_2 + mu2_2 + C1;t2 = sigma1_2 + sigma2_2 + C2;t1 = t1.mul(t2);               // t1 =((mu1_2 + mu2_2 + C1).*(sigma1_2 + sigma2_2 + C2))Mat ssim_map;divide(t3, t1, ssim_map);      // ssim_map =  t3./t1;Scalar mssim = mean( ssim_map ); // mssim = average of ssim mapreturn mssim;
}

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#include <iostream> // for standard I/O
#include <string>   // for strings#include <opencv2/core/core.hpp>        // Basic OpenCV structures (cv::Mat)
#include <opencv2/highgui/highgui.hpp>  // Video writeusing namespace std;
using namespace cv;
int main(int argc, char *argv[], char *window_name)
{if (argc != 4){cout << "Not enough parameters" << endl;return -1;}const string source      = argv[1];            // the source file nameconst bool askOutputType = argv[3][0] =='Y';  // If false it will use the inputs codec typeVideoCapture inputVideo(source);        // Open inputif ( !inputVideo.isOpened()){cout  << "Could not open the input video." << source << endl;return -1;}string::size_type pAt = source.find_last_of('.');   // Find extension pointconst string NAME = source.substr(0, pAt) + argv[2][0] + ".avi";   // Form the new name with containerint ex = static_cast<int>(inputVideo.get(CV_CAP_PROP_FOURCC));     // Get Codec Type- Int form// Transform from int to char via Bitwise operatorschar EXT[] = {ex & 0XFF , (ex & 0XFF00) >> 8,(ex & 0XFF0000) >> 16,(ex & 0XFF000000) >> 24, 0};Size S = Size((int) inputVideo.get(CV_CAP_PROP_FRAME_WIDTH),    //Acquire input size(int) inputVideo.get(CV_CAP_PROP_FRAME_HEIGHT));    VideoWriter outputVideo;                                        // Open the outputif (askOutputType)outputVideo.open(NAME  , ex=-1, inputVideo.get(CV_CAP_PROP_FPS),S, true);  elseoutputVideo.open(NAME , ex, inputVideo.get(CV_CAP_PROP_FPS),S, true);if (!outputVideo.isOpened()){cout  << "Could not open the output video for write: " << source << endl;return -1;}union { int v; char c[5];} uEx ;uEx.v = ex;                              // From Int to char via unionuEx.c[4]='\0';cout << "Input frame resolution: Width=" << S.width << "  Height=" << S.height<< " of nr#: " << inputVideo.get(CV_CAP_PROP_FRAME_COUNT) << endl;cout << "Input codec type: " << EXT << endl;int channel = 2;    // Select the channel to saveswitch(argv[2][0]){case 'R' : {channel = 2; break;}case 'G' : {channel = 1; break;}case 'B' : {channel = 0; break;}}Mat src,res;vector<Mat> spl; while( true) //Show the image captured in the window and repeat{inputVideo >> src;              // readif( src.empty()) break;         // check if at endsplit(src, spl);                 // process - extract only the correct channelfor( int i =0; i < 3; ++i)       if (i != channel)spl[i] = Mat::zeros(S, spl[0].type());merge(spl, res);//outputVideo.write(res); //save oroutputVideo << res;}cout << "Finished writing" << endl;return 0;
}