Camera output distorted

[AlvaroRausell]

CARLA version: 0.9.14 Platform/OS: Windows 11 using a GTX 1080ti Problem you have experienced: Camera (tried depth and rgb) output distorted as shown below What you expected to happen: Image showing the world without distortion Steps to reproduce: Follow the quick start guide until camera.listen(lambda image: image.save_to_disk('out/%06d.png' % image.frame)). Output images come with distortion. Other information (documentation you consulted, workarounds you tried): Tried playing around with camera settings or other maps to no avail.

[mawistc]

Hi, I discovered a similar problem, which might be also your problem. When I changed my camera resolution to a aligned value (I used multiple of 64 pixels) I could solve it. It was needed to align for both, width and height:

I used width = 600 ==> stride problem Align width to 640 ==> OK

Hope this helps you also.

[vadim7s]

I have the same camera distortion problem after going to v 0.9.14. Then I went back to v0.9.13, everything works again. To test quickly you can run visualise_multiple_sensors.py in the examples folder in v13 vs.14. Does this mean it is v14 issue?

[mawistc]

I have the same camera distortion problem after going to v 0.9.14. Then I went back to v0.9.13, everything works again. To test quickly you can run visualise_multiple_sensors.py in the examples folder in v13 vs.14. Does this mean it is v14 issue?

And is your resolution aligned?

[bernatx]

The problem happens only in Windows (DirectX) for resolutions not aligned to 256. DirectX add some extra bytes to each row. We have made a PR to fix that.

[kevintsq]

Will you be releasing a version of this bug fix in the near future, as it is indeed a serious bug?

[bernatx]

Yes, probably we will release soon a hot fix like 0.9.14.1. The bug is fixed in the dev branch of Carla currently. We are going to make a new package with those changes, and as usual it will be the Carla_Latest package that you can download also.

[kevintsq]

Thank you, then I’ll wait for your new build instead of building my own version or reverting to the old one:)

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[TzabarDolev]

I just wrote a short blog post about this issue on the Carla simulator research blog - https://carlasimblog.wordpress.com/2023/09/16/the-64-division-curse/. And added a short code snippet to fix this.

[AkshayLaddha943]

Hi,

CARLA version: 0.9.14 Platform/OS: Windows 10 using NVIDIA Geforce RTX 3070 Problem you have experienced: RGB Camera and Semantic Segmentation merged output is distorted

What you expected to happen: RGB Camera output merged with Semantic segmentation Steps to reproduce: Follow the quick start guide and run synchronous_mode.py under PythonAPI/examples Other information (documentation you consulted, workarounds you tried): I have followed the above steps and changed the resolutions to 640x480 and 1920x1080

[Noubissie]

this may be of help

[SExpert12]

Solution for this given here: https://github.com/TzabarDolev/carlablog/blob/main/fix_image_distortion.py

[Blyron]

Is this problem fixed now?