Crashing SVO playback for body masks

Software C++
1

Hello,

I am implementing body masks using the C++ SDK. Since the SDK only provides a unique binary mask per tracking body, instead of a single combined mask with all bodies in it, I referred to this code from StereoLabs. It works great for live camera feed.

However, I want to also apply body masks for SVO playback. I created multiple SVO files using ZED Explorer. I’ve noticed that for the larger-resolution SVO files (ex. HD1080, HD2K), calling mask_ocv(cv::Rect(a, b, local_mask.cols, local_mask.rows)).setTo(it.id, local_mask); consistently crashes my program. It’s specifically the .setTo(it.id, local_mask); that is causing the crash. I am getting an “Access violation reading location 0x000…” error, but the reading location is within the datastart and dataend bounds of the cv::Mat local_mask.

I do not get this crash for lower-resolution playbacks like HD720. Any help would be greatly appreciated. Thank you.

2

Hey @dko, welcome to the forums!

Do you reproduce the issue with live feeds too?

3

Hi @JPlou

Oh yes, sorry. I have been able to reproduce using live feed as well. I’ve been testing on lower resolution more often for live feed, so I forgot that it also crashes on higher resolutions for live feed.

4

Ok, good to know :+1:

  • Can I understand that you can use all samples/tools like Depth Viewer well in higher resolutions?
  • When using 720p, can you run at 60fps?
  • Could you send either here or at support@stereolabs.com a result file of ZED Diagnostic? (by clicking the “Save” button at the end of the process")
5
  1. Yes, I can run Depth Viewer in higher resolutions like HD2K without any issues.
  2. Yes, I can run 60 fps for 720p on Depth Viewer.
  3. Sure, I will send it to support@stereolabs.com
1 Like
6

@dko

I reproduced the issue in 4.0.8 on my side, I’m looking into it.

7

Thank you very much.

9

Hi,
There’s an issue with 4.0.8 where the mask could get corrupted that has been fixed in an upcoming 4.1 release.
Sorry for the inconvenience, a fix will be coming soon.

1 Like