cherault's profile - activity

Thank you Berak.

Thank you LBerger.

OpenCV 4.0 count cameras number Dear all, I would like to set a code to count the number of active cameras detected by

Please forget my last question. The problem is solved. Thank you for your help and support to all of you ! Regards,

Dear all,

I am trying to show various fixed rectangles within a video flow, using the mouse. The fixed rectangle is set as follow within the onMouse function::

void onMouse(int event, int x, int y, int flags, void* param)
{
   Rect rec = Rect(x, y, 100, 150);

   if(event == EVENT_LBUTTONDOWN)
   {
       counter++;
   }
}

So, when I move the mouse, I see the "rec" moving until I click down the left button. When a click is detected, I would like to show the ROI build within the main frame, and build outside the main frame my ROI through:

        roi1 = frame(rec);
        imshow("Roi1", roi1);

The problem is that the ROI is frozen and doesn't show the real time roi frame. I need also to repeat the operation 3 times.

Could you help me to solve this problem ?

Thanks for your help and support.

Regards,

Christophe

Hello Strukmen, I modified your code to show the selection moving the mouse, and set the selection with fixed size. But

Hello Sturkmen, Thank you for your proposal but I found the solution yesterday, and it's pretty close to yours. But one

Thanks for your update and work. I appreciate a lot !

Thank you Laurent. I tried it but it doesn't work as I want. But, I will do some tests based on your solution. Thanks ag

To be clear, I just want to draw, with a mouse, 3 formated squares within a video frame. I though it was a simple task,

Hello Sturkmen and Berak, thanks for your informations. Is the selectRois works...perfect ! I will try it again. For the

Hello Berak, Thanks for your answer as LBerger. I understand what you wrote, and I don't really need the trackers to ach

Yes, thank you for the proposal. The problem with the selectRoi is that I need to use it during the video flow. Unfortun

setMouseCallback multiples rectangles Dear all, I am trying to show various fixed rectangles within a video flow, using

MultiTracker start within a running video flow, not on a single frame Dear all, I started a project with a single track

Thanks to you ! Ok, but I will use only 3 or may be 4 max. I am really bad when I need a specifi GUI... This code will h

Also, it's not cryptographic ;-) It 's clear for me.

Thank you very much, it's exactly what I need !!! You save my day ! Thanks ! Regards,

Dear all,

Problem:

Using a main window with the multitracker algorithm, I select various ROIs with a mouse. This main window is within another one named "Canvas". In the Canvas window, I would like to add all the ROIs which I selected, whitin a window named "Tracks".

Here is a screen-shot of what I want:

How could I add the "Tracks" window within the "Canvas" window ?

Thanks for your help and support.

Regards,

Hello Sturkmen, Thanks for your proposal. You can find the code here : link text Thanks for your help. Regards

Hello Berak, yes you are right. But is it possible to associate the "tracks" window within the "canvas" window resizing

Trackers window add to Canvas window Dear all, Problem: Using a main window with the multitracker algorithm, I select

Thank you very much Sturkmen, that's really amazing. Regards and thanks again.

Dear all,

This is my goal:

I have a main window (640x480px). Within this main window, I will select by mouse various zones, with various sizes. I would like to show the main window, and just above the selected zone resized (for example 100x100), in a single window.

Questions:

Is it possible to use vconcat to show the main window and above the selected zones ? Is it possible too to use hconcat to plot the selected zones ? If yes, how do I proceed ?

Thanks for your help.

Regards,

GUI with hconcat, vconcat Dear all, This is my goal: I have a main window (640x480px). Within this main window, I will

Thank you a lot Sturkmen, this is the solution I did. Regards,

Ok Berak, I solved my problem according to your kind answer. Thanks a lot ! Regards,

Dear all,

Using the Multitracker algorithm, I would like to know how can I show the ROIs selected in various windows ? I mean show a new window for each ROI selected.

Thanks for your help and support.

Regards,` while(true) { cap >> frame;

  for(unsigned i=0;i<trackers.getObjects().size();i++)
  {
      rectangle(frame, trackers.getObjects()[i], Scalar::all(255), 2);
  }

  imshow("tracker",frame);
  waitKey(30);

} `