"rostopic echo" of the kinect

asked 2012-08-14 00:47:07 -0600

ha
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updated 2012-08-14 01:19:08 -0600

I am using ubuntu 11.10.

I place the kinect toward white wall

and

rosrun image_view image_view image:=/camera/depth/image

I can see the depth image

But rostopic echo /camera/detph/image

put different numbers(datas).

How can I get the same datas?

And how can I find actual distance using openni driver?

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answered 2012-08-14 02:15:37 -0600

dornhege

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What do you mean different? Are they very different, then something is wrong. If they are just a bit different, then that's normal. It's a sensor that has noise.

For the distances, you would subscribe to a pointcloud2 topic and not the depth image.

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answered 2012-08-14 02:56:12 -0600

ha
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Thank you. I have a question.

Does pointcloud2 topic put actual distance??

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It uses coordinates, but you can easily get the distance from that.

dornhege ( 2012-08-14 02:58:44 -0600 )edit

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