Fig. 7
From: Automated displacement measurements on historical canvases
“Annunciazione”, frontward areas A and B: maps of the absolute displacements in correspondence to the screw position equal to a 0 mm, b 1 mm, c 2 mm. Maps of relative (to initial 0 screw position) displacements in correspondence to the screw position equal to d 1 mm, e 2 mm. The reference tape is visible on the right side of all the maps a, b, c. Colormaps represent the canvas painting displacement in millimeter