How to stream x,y coordinates of detected obj into personal exe program or into matlab lively！urgent！

mbwang · April 17, 2018, 5:22am

Here’s the thing. I want to track the live coordinate of some detected object and transfer the position inf into my own program written in C++.
Is there any way to use pixyMon to achieve thaT?
Any information about how to extract the coordinates lively will be fine.
Sincerely appreciate it!

Edward · April 17, 2018, 5:22am

Hello Mengbo.
You should be able to do this by modifying PixyMon. You can find the place in the code where it renders the blobs. You might take a look at cccmodule.cpp at CccModule::renderBlobsA()

github.com

charmedlabs/pixy/blob/master/src/host/pixymon/cccmodule.cpp

//
// begin license header
//
// This file is part of Pixy CMUcam5 or "Pixy" for short
//
// All Pixy source code is provided under the terms of the
// GNU General Public License v2 (http://www.gnu.org/licenses/gpl-2.0.html).
// Those wishing to use Pixy source code, software and/or
// technologies under different licensing terms should contact us at
// [email protected]. Such licensing terms are available for
// all portions of the Pixy codebase presented here.
//
// end license header
//

#include <QPainter>
#include <stdio.h>
#include "cccmodule.h"
#include "interpreter.h"
#include "renderer.h"

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Hope this helps!

Edward

mbwang · April 17, 2018, 5:22am

Hi Edward

Thank you very much for your reply first.

But I’m sorry that I know quiite little about modifying software. I noticed that there is a hello_pixy program with libpixy. I got a minnowboard with linux mint17 installed so I wonder can I just modify that file by adding some code to transmit signal to aruduino?
Besides, I followed the instructions and installed the pixymon on my minnowboard with linux installed, hwoever when I connect pixy with minnowboard the pixyMon shows “No Pixy devices have been detected.” I wonder if there’s some files missed with the linux?

Again, thanks for your help.

Sincerely

Mengbo

Edward · April 17, 2018, 5:22am

Hello Mengbo,
Have you tried running PixyMon at root? For example,

sudo pixymon

Edward