D455 Synchronization
Hello,
I was having trouble synchronizing my 2 Intel D455 cameras. I made the connections with the wires but when I checked the timestamps on the RealSense Viewer, they were not the same. Also, I was aiming to create Omnidirectional 3D Point Clouds Using Dual RealSense Cameras; I am trying to combine the point clouds of 2 cameras to create one point cloud. I would appreciate any help I can get.
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Hi Hoyeneyi Have you set the Inter Cam Sync Mode of one of the cameras to be Master (Inter Cam Sync Mode '1') and set the other to sync to it as a Slave ('2') please?
Also, if hardware sync is working correctly then the timestamps will actually drift apart very slowly over time. If hardware sync is not operational then the timestamps will remain perfectly synced. This is explained in a paragraph of Intel's multiple camera white-paper document titled Now to the somewhat counter intuitive aspect of time stamps at the section of the paper linked to below.
If you are able to make use of ROS then Intel's guide for using two 400 Series cameras to stitch individual point clouds together into a single combined cloud may be of interest to you.
https://github.com/IntelRealSense/realsense-ros/wiki/Showcase-of-using-2-cameras
The free open-source RealSense compatible tool CloudCompare could be another way to achieve this goal.
You could also consider whether the commercial 3D scanning software RecFusion Pro, which supports multiple RealSense cameras, could meet your project needs.
https://www.recfusion.net/products/
If you prefer to develop your own solution then point cloud stitching can be performed in custom-created RealSense applications by interfacing RealSense SDK scripts with point cloud libraries such as Open3D and PCL.
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