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Sometimes depth image is black in RViz #397
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Hi @abylikhsanov
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Hi @Myzhar
Also, when I simply place the camra flat on the ground I always get black image and if I til a bit I start to see the depth image and if then I move the camera I sometimes get black and sometimes get depth image |
If the camera is a ZED the minimum measured depth is 70 cm. If the planar surface is nearest than that distance the depth image will result black, even if it is not facing directly the surface |
@Myzhar It is not ZED, it is ZED M |
With the ZED-M the minimum distance is 20 cm, but the effect is similar: Have you changed the |
I don't think that this is due to the distance as even if I place camera far behind I still get this issue. I will try to decrease the condifence parameter |
Yes, it does not look like it is due to the confidence score |
Hey, I mean it is not due to the confidence :) |
I just noticed a similar issue with the option |
Is that the |
It indeed made the image stable, thank you. |
Yes, it's better because Rviz is not forced to parse the whole depth image to recalculate the min and max values for each new frame. Please close the issue if all your doubts are solved. |
I am running ZED M on Jetson TX1. When I run the camera using ZED Depth viewer I can see depth image quite well but when I run the zed_ros_wrapper and try to visualize the same depth image in RViz, very often I get black image, why is that?
To clarify, I do get depth image in RViz but it interchanges with just a black image.
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