Fill the occlusion in 3D point cloud data

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gayathri sankaran
gayathri sankaran 2023-4-26
回答： Ranjeet 2023-6-1
Hi all,
Currently am working in calcualting volume for the point cloud data. Am using depth data 'z' as an important parameter for volume calculation. Due to occlusion some point doesnt have z value and the corresponding x and y values also will not be there. I will attach the ss for this case. My need is to fill the occluded region with its neighbour (can be mean, min or max).

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回答（1 个）

Ranjeet
Ranjeet 2023-6-1
Hi Gayathri,
I assume that there are invalid points in the point cloud you generated. Invalid points will be of form ‘[Inf, Inf, Inf]’ or ‘[NaN, NaN, NaN]’. I suggest you use ‘2D interpolation’ from scatteredInterpolant.
It works in two stages:
  1. First you create an ‘interpolant’ using the [x, y] coordinates where valid distance (z) value is available.
  2. Create query point/s ‘[xq, yq]’ and use the interpolant object from step 1 to get ‘zq’ (the expected distance) corresponding to the query points.
Here '[xq, yq]' points are to be decided by the user.
You may also want to refer to following resource on 3D point cloud interpolation -
Interpolate Points of a 3D Point Cloud

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