Fig. 1.
Samples made on canvas ground:(a) single paths (brushes: natural bristle 4, 12), (b) single paths (brushes: sable flat, sable round),(c) crossing paths (brushes: sable flat, sable round)
Fig. 2.
Measurement platform
Tab. 1.
Technical data of the scanner
| Measurement area | 200 x 150 mm |
| Working distance | 250 mm |
| Point spacing | 0,08 mm |
| The device dimensions | 206 x 205 x 64 mm |
| Working temperature | 5 ° C do 40 ° C, without condensation |
Fig. 3.
Canvas ground with reference markers applied
Fig. 4.
Excessive exposure time of the scanned object
Fig. 5
Graphical representation of the canvas scanning results
Fig. 6.
Three modes of point cloud polygonisation
Fig. 7.
Three levels of detail obtained during the polygonisation process: (a) Less details, (b) Standard, (c) More details
Fig. 8.
Scanning result using the shortest exposure time, effectively eliminating overexposure of the scanned object
Fig. 9.
Scanning effect with the shortest exposure time selected for the digitalisation of the painting paths
Fig. 10.
Digitised sample of paint paths within the measurement area of the optical scanner
Fig. 11.
Graphical representation of the scanning results showing the point cloud of the entire object’s topography
Fig. 12.
Example results of determining the topography of painting paths on a linen canvas: (a) photograph of a sample section, (b) topography including painting paths and surrounding canvas, (c) topography of the painting paths alone
Fig. 13.
Paintbrush paths on the canvas as visualized in the Glaze application