# Time and Data Synchronization & Calibrations between Camera, LiDAR and Radar

**URL:** <https://discourse.openrobotics.org/t/time-and-data-synchronization-calibrations-between-camera-lidar-and-radar/14050>\
**Category:** Computer Vision / Perception\
**Tags:** melodic, ros\
**Created:** [May 12, 2020, 4:50pm UTC](https://discourse.openrobotics.org/t/time-and-data-synchronization-calibrations-between-camera-lidar-and-radar/14050 "2020-05-12T16:50:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dejongyeong](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.openrobotics.org/dejongyeong/32/6339_2.png) [@dejongyeong](https://discourse.openrobotics.org/u/dejongyeong)\
**Post date:** [May 12, 2020, 4:50pm UTC](https://discourse.openrobotics.org/t/time-and-data-synchronization-calibrations-between-camera-lidar-and-radar/14050/1 "2020-05-12T16:50:34Z")

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Hi. I am working on large heavy vehicles off-road in industrial environments. The sensors that were employed at our initial stage of experiment are **FalconIQ IP RGB Camera** , **Velodyne VLP-32C LiDAR sensor** and **SmartMicro UMRR T-153 Automotive Radar sensor**. These sensors are arranged in a parallel.

I am new to this and would like to seek some advice and/or pointers on how to acquire data synchronously from three sensors together for object detection as well as time synchronization issue. Is there any available open-source ROS packages that I could refer to?

I would also like to seek advice on calibrating three sensors together as I read some articles that sensor calibration is an important step before going into data acquisition. I would also like to seek advice on how could I project / visualize pointclouds from lidar and radar on camera visualization.

Your help are much appreciated. Many Thanks.

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**Author:** ![gbiggs](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.openrobotics.org/gbiggs/32/30361_2.png) [@gbiggs](https://discourse.openrobotics.org/u/gbiggs)\
**Post date:** [May 12, 2020, 11:06pm UTC](https://discourse.openrobotics.org/t/time-and-data-synchronization-calibrations-between-camera-lidar-and-radar/14050/2 "2020-05-12T23:06:53Z")

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Thanks for your question. However we ask that you please ask questions on [http://answers.ros.org](http://answers.ros.org) following our support guidelines: [Support - ROS Wiki](http://wiki.ros.org/Support)

ROS Discourse is for news and general interest discussions. [ROS Answers](http://answers.ros.org) provides a Q&A site which can be filtered by tags to make sure the relevant people can find and/or answer the question, and not overload everyone with hundreds of posts.

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**Author:** ![Kevin\_Patel](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.openrobotics.org/kevin_patel/32/8106_2.png) [@Kevin\_Patel](https://discourse.openrobotics.org/u/Kevin_Patel)\
**Post date:** [December 16, 2022, 7:46pm UTC](https://discourse.openrobotics.org/t/time-and-data-synchronization-calibrations-between-camera-lidar-and-radar/14050/3 "2022-12-16T19:46:37Z")

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Hello, did you solve the issue of synchronization?