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Research questionHow does encryption granularity affect machine-learning reconstruction of withheld point-cloud coordinates?Selective coordinate encryption hides only part of a point cloud, leaving unencrypted spatial and geometric structure available to an attacker. That remaining structure may reveal the withheld coordinates, depending on how encryption is distributed.
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Statistical Machine Learning
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Latest papersRecent research connected to this question, newest first.Learning-Based Reconstruction Attacks on Coordinate-Obfuscated Point CloudsThe evidence concerns attackers with access to selectively encrypted point clouds who attempt to recover encrypted coordinates without decryption. It evaluates PointNet and Random Forest attacks under two configurations: encrypting all X coordinates and encrypting every second X coordinate; it does not establish security against other attack models or encryption schemes.research paper · Sep 2, 2026
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