[ros-users] rviz image_view can't display depth image from openni_camera

[Suat Gedikli]

Hi,
the depth image is simply he disparity image between the projector and
the camera. So if you want to see the output use 'rosrun image_view
image_view image:=/camera/depth/image_raw'.
Even then you will see just a binary image. The best way to visualize te
output is to use rviz and display the pointlouds with according RGB
values.

Suat

On Fri, 2010-12-10 at 10:07 -0800, Patrick Bouffard wrote:
> I've got the openni_camera driver running (though without openni_pcl
> at this point) but I'm having trouble getting anything useful from it
> so far. The only thing that has worked as expected is the RGB image.
> 
> Specifically when I try to look at the depth image in rviz's
> image_view, the error message I get is "Unsupported image encoding
> [32FC1]". This can be seen either from the commandline (rosrun rviz
> image_view) or from within rviz proper. Also, image_view (from the
> image_view package) does display the depth image, but at a much lower
> rate than it is coming in at (rostopic hz /camera/depth/image_raw
> reports 30 Hz), maybe around 5 FPS. The image is also flickery and
> there is a wide black border on the right and top edges of the image.
> 
> Any ideas?
> 
> Ubuntu 10.10 Maverick 64-bit, ROS unstable (.deb install).
> 
> Cheers,
> Pat
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