process to view D415 live or captured depth stream into matlab.In fact , I need a pointcloud.

[vkuma45]

Hello,

How should we process (.ply format) to form a pointclouds and stitch together all the (.ply format )step by step in matlab.

I am quiet new to this matlab as well as real sense camera .So your answers will be worth to me. I went few of the answers of joe, eliza , but i did not get exaclty how to proceed with capture images( 3D export in .ply) to form a point cloud and make different images into one.

Thank you @idata ,@JBos3​ ,@VHess​ ,@MMend10​ @MartyG​ 

and @EMuel​ :- can u please tell me the code and how you solve the issue of two camera D415 simultaneously.

[MartyG]

MATLAB is probably not a suitable platform for combining live point clouds from two separate cameras. You might have more success with the method in the guide linked to below for combining clouds from 2 cameras, which was suggested in a similar case by Dorodnic the RealSense SDK Manager.

https://github.com/intel-ros/realsense/wiki/Showcase-of-using-2-cameras

There is also a version of the guide for using 3 cameras across 2 machines.

https://github.com/intel-ros/realsense/wiki/showcase-of-using-3-cameras-in-2-machines

[vkuma45]

Thank you for the response @MartyG​ .

however, i need information on this

Process to view D415 live or captured depth stream into matlab.In fact , I need a pointcloud.?

How should we process (.ply format) to form a pointclouds and stitch together all the (.ply format )step by step in matlab?

Thank you.

[MartyG]

Apologies for the delay in responding. I wanted to take time to think carefully about your situation if you really need to do the operation with MATLAB.

I would recommend forgetting about using live streams and focus on the ply file approach instead. It is possible to read a single ply file into MATLAB to generate a point cloud, using the pcread function.

https://uk.mathworks.com/help/vision/ref/pcread.html?language=en_US

Importing and combining more than one ply is going to be harder though. After an extensive search, the best reference I could find was someone who tried to import and merge six ply files into MATLAB, and described the process that they were using.

https://uk.mathworks.com/matlabcentral/answers/259918-merging-point-clouds-to-get-a-3-d-model

[vkuma45]

Thank you for the response again @MartyG​ g.

Definitely, please convey me as soon as you find something new or useful for me.I will work on that. I am actually running out of time. I have done till getting the ply into matlab. Yes ,it is diificult to get and merge.

I will process according to links you have given to merge and compile all into one. By the way, do you have any reference , how we can do it in Python for the future reference.But right now, i cant switch from matlab to python because of the situation demand.

Thank you.

[MartyG]

The 'Box Dimensioner' Python example program has code for calculating a cumulative point cloud from multiple live cameras.

https://github.com/IntelRealSense/librealsense/blob/master/wrappers/python/examples/box_dimensioner_multicam/measurement_task.py

[vkuma45]

Thank you so much.​

[MartyG]

You are very welcome. Glad I could be of help!​