117 lines
2.7 KiB
C++
117 lines
2.7 KiB
C++
#include "opencv2/opencv.hpp"
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#include <iostream>
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#include "mpi.h"
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using namespace std;
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using namespace cv;
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uchar **matToArray( cv::Mat array);
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int main(int argc, char* argv[])
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{
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int procRank,procCount;
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MPI_Init(&argc,&argv);
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MPI_Comm_size(MPI_COMM_WORLD,&procCount);
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MPI_Comm_rank(MPI_COMM_WORLD,&procRank);
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int childProcesses = procRank -1;
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//2D array - used to store ther Mat Object values
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uchar **pixels = NULL;
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uchar **oldPixels = NULL;
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// Create a VideoCapture object and open the input file
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// If the input is the web camera, pass 0 instead of the video file name
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VideoCapture cap("teapot.mp4");
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// Check if camera opened successfully
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if(!cap.isOpened()){
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cout << "Error opening video stream or file" << endl;
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return -1;
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}
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Mat oldFrame;
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cout << oldFrame << endl;
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while(1){
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Mat frame;
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// Capture frame-by-frame
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cap >> frame;
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// If the frame is empty, break immediately
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if (frame.empty())
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break;
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if (oldFrame.empty()) {
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oldFrame = frame;
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continue;
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}
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cv::Mat newMat = cv::Mat(frame.rows, frame.cols, frame.type());
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oldPixels = matToArray(oldFrame);
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pixels = matToArray(frame);
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for(int i=0;i<frame.rows;i++){
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for(int j=0;j<frame.cols;j++){
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int diff = std::abs(pixels[i][j] - oldPixels[i][j]);
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if(diff > 10) {
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Vec3b & color = newMat.at<Vec3b>(i,j);
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// ... do something to the color ....
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color[0] = 255;
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color[1] = 255;
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color[2] = 255;
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} else {
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Vec3b & color = newMat.at<Vec3b>(i,j);
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// ... do something to the color ....
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color[0] = 0;
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color[1] = 0;
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color[2] = 0;
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}
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}
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}
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oldFrame = frame;
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// Display the resulting frame
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imshow( "Frame", newMat );
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imshow( "Hans", frame );
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// Press ESC on keyboard to exit
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char c=(char)waitKey(25);
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if(c==27)
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break;
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}
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cout << "Worked with " << procCount << " Prozesses!" << endl;
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// When everything done, release the video capture object
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cap.release();
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// Closes all the frames
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destroyAllWindows();
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MPI_Finalize();
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return 0;
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}
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uchar **matToArray( cv::Mat array)
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{
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uchar **pixels = new uchar *[array.rows];
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for (int i = 0; i < array.rows; i++)
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{
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//IMPORTANT!! Channels are BGR
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pixels[i] = new uchar[array.cols * array.channels()];
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pixels[i] = array.ptr<uchar>(i);
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}
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return pixels;
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} |