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velodyne(HDL-32E) something shadow occured why it happened?

asked 2018-03-21 06:58:37 -0500

dnjsxor564 gravatar image

https://www.youtube.com/watch?v=HdJar...

our velodyne use driver -> https://github.com/ros-drivers/velodyne

and i dont know why shadow occured what should i do?

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It might be useful if you could post a bag file.

stevejp gravatar imagestevejp ( 2018-03-21 07:03:57 -0500 )edit

oh thx but how to upload bag file?

dnjsxor564 gravatar imagednjsxor564 ( 2018-03-21 22:13:08 -0500 )edit

Upload it to something like Google Drive or Dropbox, then post a link here

M@t gravatar imageM@t ( 2018-03-22 21:46:06 -0500 )edit

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answered 2018-03-21 20:49:41 -0500

M@t gravatar image

I'm using the same drivers and I experience the same phenomena with the HDL-32. However, if you save the point cloud, e.g. with...

$ rosrun pcl_ros pointcloud_to_pcd input:=/velodyne_points

...you should see that the full point cloud without the shadow. In addition, if you record the data and then play it back with rosbag, you shouldn't see the shadow but you may still see a "ripple" effect that rotates around the cloud in the same way.

I think that the problem is related to how RViz displays or refreshes point clouds in it's visual display. As far as I can tell it doesn't seem to adversely affect the point cloud in any way.

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i use bag file but i still can see shadow.. if u check my bagfile? and check shadow occured? if u can help me i give my bagfile, please tell me your email thx.

dnjsxor564 gravatar imagednjsxor564 ( 2018-03-21 22:12:47 -0500 )edit

Hmmm... that's odd. It would be best if you could upload a sample bag file to something like Google Drive or Dropbox and then post a link to it in your question. Then everyone can see it and take a look.

M@t gravatar imageM@t ( 2018-03-22 21:45:40 -0500 )edit

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Asked: 2018-03-21 06:58:37 -0500

Seen: 73 times

Last updated: Mar 21 '18