Vijay Kakani's profile - activity

Hi Everyone,

These days I'm getting familiar to Open CV, thanks for your support.

Q: How to save the "Output Video" (.mov)in the following program to my disk? I've seen many answer on web but unable to customize them according to my program. Please suggest a code fragment that suits this program.

int main()

 { 

cv::VideoCapture capture("F:/Bee videos/P1040356.mov");

if (!capture.isOpened())

            {
        std::cerr << "Unable to load the video" << std::endl;
        return 1;
    }

// Get the frame rate
double rate= capture.get(CV_CAP_PROP_FPS);

bool stop(false);
cv::Mat frame; // current video frame
cv::namedWindow("Extracted Frame");

// Delay between each frame
// corresponds to video frame rate
int delay= 1000/rate;

// for all frames in video
while (!stop) {

    // read next frame if any
    if (!capture.read(frame))
        break;

    cv::imshow("Extracted Frame",frame);

    // introduce a delay
    // or press key to stop
    if (cv::waitKey(delay)>=0)
            stop= true;
}

// Close the video file
capture.release();

cv::waitKey();

// Now using the VideoProcessor class

   // Create instance
VideoProcessor processor;
// Open video file
processor.setInput("F:/Bee videos/P1040356.mov");
// Declare a window to display the video
processor.displayInput("Input Video");
processor.displayOutput("Output Video");  
// Play the video at the original frame rate
processor.setDelay(1000./processor.getFrameRate());
// Set the frame processor callback function
processor.setFrameProcessor(canny);
// Start the process
processor.run();
cv::waitKey();

Thanks in anticipation,

Kindest Regards,

Vijay Kakani

Thanks a million Mathieu, It is working perfectly now. I added a log message above and changed the backslash... I'm new to Open CV, some of my questions seems little silly but thanks for answering with patience.

Kindest Regards, Vijay Kakani

Hi Open CV group,

Firstly, thanks for your support till date. As I am new to Open CV, I've gone through some sample tutorials and made a code fragment for background separation.

include "stdafx.h"

include "opencv2/opencv.hpp"

include "iostream"

include "vector"

int main(int argc, char *argv[])

{

cv::Mat frame;
cv::Mat back;
cv::Mat fore;
cv::VideoCapture cap(0);
cv::BackgroundSubtractorMOG2 bg(10000, 25, false);
std::vector<std::vector<cv::Point> > contours;
cv::namedWindow("Frame");
cv::namedWindow("Background");
for(;;)
{
    cap >> frame;
    bg.operator ()(frame,fore);
    bg.getBackgroundImage(back);
    cv::erode(fore,fore,cv::Mat());
    cv::imshow("Frame",fore);
    cv::imshow("Background",back);
    if(cv::waitKey(30) >= 0) break;
}
return 0;

}

I am able to separate the background using camera as input.

How to use the (quick time movie, i.e; .mov video clip) as input to the above program??

Hi Victor1234, Firstly, thanks for your prompt response. I have a jpeg picture (one static frame of video clip), can I use that static picture to separate the background in the whole video clip (quick time movie {.mov} )??? Sorry for not conveying the question properly

Thank you very much Mr. Mathieu Barnachon; I am working according to your suggestions I'm new to Open CV. Thanks a million for your valuable information. I have a small question, If possible please suggest me with the solution. I am posting it as a new question

Hi Everyone,

I'm new to Open CV and present working on my project which needs background separation done with OpenCV.

Two days back I configured Open CV with Visual Studio C++ 2010 and worked on small tutorials from this blog http://opencv-srf.blogspot.ie/

By I am not sure about how to make the BGS from a video file and background image I am having on my disk...

Can anyone please suggest me with some code that could help me in extracting the background from video (type: quick time movie)by using static background image (jpeg).

Thanks in anticipation

Kindest Regards,

Vijay Kakani