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I structured the voxelgrid and checked the covariance in the voxel by the Leaf.
And then, I used passThroughFilter to get the pointcloud in the voxel, and computed the covariance in the voxel by pcl::computeCovarianceMatrix().
I thought these covariances were same values, but these were not.
And also eigenvalue.
I would like to use the covariance values which are computed by pcl::computeCovarianceMatrix().
Are you know why?
Please give me an advice.
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