Digitising analogue LPs with high-resolution scanners isn't a new idea — we blogged an early effort years ago here — but it seems to have come along nicely, per this NYT story.
The team shoots thousands of precise sequential images of the
groove and then stitches the images together, measuring the shape
of each undulation and calculating the route a stylus would take
along the path."We grab the image and let the computer model what the stylus
would have done if it had run through the surface," said Carl
Haber, a senior scientist at the lab who led the research team in
collaboration with Vitaliy Fadeyev, a postdoctoral researcher
there.