SonoLab

Echoes become a pipe wall you can orbit.

Blind ultrasonic geometry under unknown tool pose, fluid sound speed, and defect map.

Open 3D demo GitHub

What you are looking at

A tool inside a pipe fires ultrasonic looks and records echoes. SonoLab reconstructs the inner wall as a 3D surface - dents show up as geometry, not as a separate detector scoreboard.

Physics engines generate truth for scoring. The estimator only sees instrument TX/RX (plus an explicit labeled fluid calibration when absolute scale is needed).

Two labs, one product

Lab A

Physics referee

3D scalar FDTD (and optional SPECFEM) knows pose, fluid speed, and the wall. It produces the echoes used for demos and tests.

Lab B

Blind estimator

Joint geometry fit from picks alone. No silent mill pipe ID. Absolute scale only when you pass a labeled fluid sound speed.

Proof stills

Interactive mesh is the main demo. These frames show the same reconstruction flattened and in 3D.

Reconstructed 3D pipe wall point cloud with truth rings
Lab B wall cloud with truth rings
Unwrapped R of theta and z maps for truth, estimate, and residual
Unwrapped R(θ, z): truth, estimate, residual

Color in the 3D view = radius from tool center (near → red, far → blue)

Honest limits

Physics label: 3D_scalar_acoustic. Display mesh is resampled for interaction; it is not a claim of commercial in-line inspection imaging density. Portfolio / open research - not a field product.