Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

@MahdiehNejati's answer is probably good enough for most cases.

However, if you want an exact match...

The problem is that the pcl nodelets are still subscribing to PointCloud topics instead of PointCloud2 topics, which has a less precise timestamp. This timestamp then gets propagated.

I filed a bug report here.

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.