Laurentiu's profile - activity

@LBerger: thank you! :)

I discovered the problem. I had two cameras connected at the same USB port using a USB hub.

Yes, individually camera works and if I have only two cameras all is ok, but only with three cameras it's a problem. I t

With one or two cameras it works, only with three cameras not working :( I tried with your method but not working :(

How to read videos from three cameras in the same time? Hello, I tried to getting videos from three cameras in the sam

Optimization of mean function of non-zero pixels Hello, I'm a beginner in OpenCV with python, and I want to compute mea

OK, thank you very much! :D @berak

@break I want to develop an application for automotive for monitoring the driver and if he falls asleep, or is not caref

Diploma project ideas Hello everyone, Next year I will have the diploma project for Master Program, do you have any eas

Thank you :D I will modify my code and I will watch the tutorial.

I need just an optimization for my algorithm using OpenMP, I don't need the best Sobel algorithm that exists. But thank

I don't want to reinvent the wheel. I just want to do a college study about the OpenMP influence in Image Processing alg

How to obtain a better time for execution for Sobel algorithm using OpenMP? Hello everyone, I tried to parallelize the

How to obtain a better time for execution for Sobel algorithm using OpenMP? Hello everyone, I tried to parallelize the

How to obtain a better time for execution for Sobel algorithm using OpenMP and MPI? Hello everyone, I tried to parallel

How to obtain a better time for execution for Sobel algorithm using OpenMP and MPI? Hello everyone, I tried to parallel

How to obtain a better time for execution for Sobel algorithm using OpenMP and MPI? Hello everyone, I tried to parallel

Is necessary to remove this from includes. I use OpenCV 3.1 and I removed it and now all is well :D That's my solution. For me was a good solution :D @anhnamxtanh

Thank you! :D

Hi,

bilateralFunction is used just for color image ? So, is necessary to apply cvtColor from GRAY to BGR ?

Thank for information :D

ok, thanks :)

Why I have -10 points, it's a simple question, and now I have this information

I have old code

Hi,

How to apply bilateralFiltering from OpenCV library if I have a IplImage ?

Thank you very much!

SOLVED: I solved this problem cvSmooth(src, dst, CV_BILATERAL, param1:int, param2:int, param3:double );

After conversion the result is good. Thank you for your help :D

Now it's ok, but not very good. And I want to write as binary file, and if I read binary file the images is bad, very bad

the result is negative. Range between -8000 and -320000 value for my pixels

I tried this code but the result is a black image? do you have any suggestion ?

Thanks for help, I solve the problem, VideoWriter support just color, I had to do cvtColor for my image :D Thank you very much for help ;) @berak

ok, so the video is not good, I don't have the images from folder I have line of black gray and white

Is a bad result :(

And the code:

#include "opencv2/opencv.hpp"
#include <iostream>

using namespace std;
using namespace cv;

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

    VideoWriter video("out.avi", CV_FOURCC('M','J','P','G'), 30, Size(640, 480), false);

    if ( !video.isOpened() ) //if not initialize the VideoWriter successfully, exit the program
    {
        cout << "ERROR: Failed to write the video" << endl;
        return -1;
    }

    Mat image(480, 640, CV_8UC1);
    for(int i = 0; i < 100; i++)
    {
        char left[1024] = "";
        sprintf(left, "left640x480_%d.bmp", i);
        image = imread(left, 0);
        if (image.empty())
        {   
          cout << "ERROR! Failed to load image!" << endl;
          return -1;
        }

        video.write(image);
        imshow( "Frame", image );
        char c = (char)waitKey(33);
        ......

Maybe here you found the theory for camera calibration and code: http://docs.opencv.org/3.1.0/d4/d94/t...

and here is code for compute disparity map using sgbm algorithm in c++ with OpenCv

http://stackoverflow.com/questions/35...

Is necessary to remove this from includes. I use OpenCV 3.1 and I removed it and now all is well :D

maybe

 float outputValue = (float)sumValue / (float)num_valid;

or

 float outputValue = (float)( sumValue / num_valid);

I changed what you said, but the result is the same @berak

Hi, I want to create a video using a sequence as images, I have greayscale images with resolution 640x480,I tried to make this simple application fallowing the next steps: 1) I read each images with imread 2) I used VideoWriter for writing video, but my video after saving is the 0 second saved :(

This is my code:

#include "opencv2/opencv.hpp"
#include <iostream>

using namespace std;
using namespace cv;

int main(int argc, char* argv[])
{
    for(int i = 0; i < 30; i++)
    {
        char left[1024] = "";
        sprintf(left, "left640x480_%d.bmp", i);

        Mat image(640, 480, CV_8UC1);
        image = imread(left, 0);

        VideoWriter video("out.avi", CV_FOURCC('M','J','P','G'), 30, Size(640, 480), false);

        Mat frame;
        image.copyTo(frame);
        video.write(frame);
        imshow( "Frame", frame );
        char c = (char)waitKey(33);
        if( c == 27 )
            break;
    }

  return 0;
}

I use OpenCV 3.1 in C++. Thank you for your help!