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Hi, I have some questions about generating images from point cloud data

Open chaohe1998 opened this issue 1 year ago • 6 comments

When I use the calibration file provided by you to fuse the point cloud data and image data to generate the point cloud image, but the generated image is not very correct. There is a problem. What does the content of the calib file represent? cam_ K,cam_ RT,lidar_ R,lidar_ T? I hope to receive your reply, Thank you。

chaohe1998 avatar Mar 04 '23 08:03 chaohe1998

When I use the calibration file provided by you to fuse the point cloud data and image data to generate the point cloud image, but the generated image is not very correct. There is a problem. What does the content of the calib file represent? cam_ K,cam_ RT,lidar_ R,lidar_ T? I hope to receive your reply, Thank you。

cam K: camerat intrincs, cam RT: camera extrinsic of ego to cam lidar R: Rotation of lidar coordinate to ego coordinate lidar T : translation of lidar coordinate to ego

chaytonmin avatar Mar 05 '23 15:03 chaytonmin

image Thank you very much for your reply. This is my point cloud projection to the image based on the parameters. Is this correct? Thank you.

chaohe1998 avatar Mar 06 '23 13:03 chaohe1998

image Thank you very much for your reply. This is my point cloud projection to the image based on the parameters. Is this correct? Thank you.

yes. It is normal

chaytonmin avatar Mar 06 '23 13:03 chaytonmin

Sorry, I have another question. The original data of point cloud has five columns. Can you tell me what they represent? The first three columns are x y z, and the last two columns? It seems that there is no information about reflection intensity? Looking forward to receiving your reply, Thank you.

chaohe1998 avatar Mar 07 '23 02:03 chaohe1998

Sorry, I have another question. The original data of point cloud has five columns. Can you tell me what they represent? The first three columns are x y z, and the last two columns? It seems that there is no information about reflection intensity? Looking forward to receiving your reply, Thank you.

line number ( we use 40-line lidar to collect data) and reflection intensity.

chaytonmin avatar Mar 07 '23 06:03 chaytonmin

@chaohe1998 @chaytonmin Can you share the code how you fused point cloud data and image data to generate the point cloud image?

Ahsanr312 avatar Jan 22 '24 15:01 Ahsanr312