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Rem Robin

Point-cloud diff tool for E57 scan comparison

Compares two E57 files structurally rather than byte for byte, and reports what actually changed: scan count, pose, point format, coordinate bounds and per-scan metadata. Built for verifying that an export pipeline did not quietly rewrite a survey.

  • Reads 40M points in 8s on a laptop
  • Reports pose drift below 1mm
  • Single binary, no Python environment to manage
  • HTML report you can send to a client

What it does

Reads two E57 files and reports every structural difference between them: scan count, pose, point format, coordinate bounds, and per-scan metadata.

Why

Export pipelines silently drop intensity, rewrite poses, or renumber scans. A byte comparison tells you the files differ; this tells you how.

rem-robin before.e57 after.e57 --report diff.html