The VP8 Image Analyzer is an analog computer produced by Pete Schumacher of Interpretations Systems Incorporated (ISI) in 1972.
[2][3] When the device was used with photographs or paintings, the result was a distorted and inaccurate representation of the original image.
However, the Shroud image produced an accurate three-dimensional representation of the Man of the Shroud, with facial features, arms, legs and chest all contoured correctly.
This was shown to Peter Schumacher, the inventor of the device, and he later recalled his astonishment: "I had never heard of the Shroud of Turin before that moment.
Only the Shroud of Turin has produced these results from a VP-8 Image Analyzer isometric projection study.