Segmentation fault (core dumped)

[ChernyshovYuriy]

Hi,
I am experiencing "Segmentation fault (core dumped)" on all input images.
I am beginner to the C++ (came from Java and Python) thus can't provide stack trace or whatever is equivalent in C++. However, by using std::cout I found that root source is in imageProcessing.cpp

cv::convertPointsToHomogeneous(contour, homogeneous_contour);

I am running on Ubuntu 16, Open CV 3.1.0. Compiled your code by make and in the QtCreator.
Both ways failed.
Describe me what information you do need for the analysis and how to get it.
I am more then interesting in your project.

[glemaitre]

The code was tested with OpenCV 2. So there is probably some changes to do for OpenCV 3.
Check if homogeneous_contour needs to be be allocated before to be passed to the function.

[ChernyshovYuriy]

std::vector< cv::Point3f > homogeneous_contour;
homogeneous_contour.reserve(contour.size());

Does not help.
Is there any way in C++ to get stack trace? I tried to wrap around try / catch but it seems to be not works in a way that it does in Java.

Any other thoughts rather then try OpenCV 2?

[glemaitre]

I moved to Python so my C++ and related tools are a bit rusty. Regarding the trace, you should probably used an external library such as stacktrace, since there is nothing built-in. Compiling in debug mode should already give you some info normally. If you are using QtCreator, you should have something integrated I think: link.

If you identified that it was coming from the function I would check the input array to be sure that all the values are correct. Checking the OpenCV function, I don't see what can go wrong.

Is it failing with one of the testing images provided?

[ChernyshovYuriy]

Thanks a lot for information.
It failed on all images, does not matter which one, even if I provide my own images.

I am more interested in Python version of your project :-) Python is much more clear for me. Do you have your Python project set up in git as well or is it something that you manage internally?

[glemaitre]

This project is kinda of old (4-5 years) and I did not move it to python, unfortunately.

To make the project proper, I need to make the unit test at some point, but I am a bit lagging on that.
If you can get the trace that could be great. In the meanwhile, I will try to get a similar configuration and see if I can find out the issue. The good thing is that the bug is for all images ;). It should be a more or less easy one to identify.

[ChernyshovYuriy]

Backtrace.txt
Here is back trace. I used QtCreator and import project as C++ Application.
However, for me, this issue is in low priority because I am dealing with Python.