New protocol assesses 3D reconstruction reliability without ground truth

Researchers have developed a new protocol called "Track-Leakage-Free Hold-Out Self-Validation" to assess the reliability of 3D reconstructions from photogrammetric inspection without external ground truth data. This protocol involves withholding a subset of images and re-localizing them against points seen by at least two other images, ensuring a view is not tested against structure it helped create. While the protocol is computationally sound and can indicate internal geometric consistency, it was found to be unreliable in tracking absolute accuracy and could not reliably gate gross failures, as demonstrated across various benchmarks including ETH3D and IMC 2025. AI

RANK_REASON The cluster contains a research paper detailing a new protocol for photogrammetric reconstruction. [lever_c_demoted from research: ic=1 ai=0.4]

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