# Multi-camera object sync

**URL:** <https://community.stereolabs.com/t/multi-camera-object-sync/532>\
**Category:** Software\
**Created:** [October 4, 2021, 1:39pm UTC](https://community.stereolabs.com/t/multi-camera-object-sync/532 "2021-10-04T13:39:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![cpene1](https://community.stereolabs.com/user_avatar/community.stereolabs.com/cpene1/32/144_2.png) [@cpene1](https://community.stereolabs.com/u/cpene1)\
**Post date:** [October 8, 2021, 9:35am UTC](https://community.stereolabs.com/t/multi-camera-object-sync/532/2 "2021-10-08T09:35:50Z")

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Would something like this work?

> [@Fusion of 3D Stereo-camera SLAM with 3D LiDAR SLAM](https://community.stereolabs.com/t/fusion-of-3d-stereo-camera-slam-with-3d-lidar-slam/464/2):
>
> Hi @FL399 the best way to align the two sensors is by providing a “tag” in the real world with known coordinates (usually the origin), detecting it with both the sensors, and calculating the relative positions with respect to it. Then you can use coordinate transform formulas to calculate the transform from the ZED to the Lidar or vice-versa. For the ZED you can use for example an ArUco tag (see [this repository](https://github.com/stereolabs/zed-aruco)), for the lidar you must find a way to detect it using only 3D information… [this pa…](https://arxiv.org/pdf/1908.10349.pdf)

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