RealSense D435i (counter lines)

• MartyX Grover

  • February 18, 2022 09:28
  • Edited

  Hi Dev Luenah  If you are generating a 3D point cloud and would like to generate a line that follows the 3D contours of the cloud then drawing a polyline might be a suitable method to use, as described in the link below.

  https://github.com/IntelRealSense/librealsense/issues/3868#issuecomment-487654994

   

  In regard to drawing lines directly on the face, the RealSense SDK has a C++ example program for the Dlib facial landmark library.

  https://github.com/IntelRealSense/librealsense/tree/master/wrappers/dlib/face

   

  

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• Dev Luenah

  • February 23, 2022 02:37
  • Edited

  Thank you for the quick reply!
  The method we want to apply is to make the lines by connectin the deplth values of RealSense directly on the image to make it look like a picture.
  I would like to know if there is a way to connect the depth values  by drawing a polyline.

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• MartyX Grover

  • February 22, 2022 09:44
  • Edited

  The OpenCV instructions findContours and drawContours may help to produce this kind of image.

  https://docs.opencv.org/4.x/df/d0d/tutorial_find_contours.html

  https://stackoverflow.com/questions/51022381/how-do-i-connect-closest-points-together-using-opencv

   

  Another approach could be to create a convex hull to join pointcloud points up into lines.  Popular vision computing and point cloud libraries such as OpenCV, PCL, Open3D, Pyntcloud, etc have convex hull instructions. Here is an example of an Open3D tutorial:

  http://www.open3d.org/docs/release/tutorial/geometry/pointcloud.html

   

  

   

  Another option that you could explore is generating a Visual Effect Graph with RealSense pointcloud data using the Unity engine, as described in the link below.

  https://github.com/keijiro/Rsvfx

   

  

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• Dev Luenah

  • February 23, 2022 05:49

  Thanks. 

  Have a nice day : ]

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