Figure 1. Imaging set-ups.
(A) Camera imaging set-up. Light source: LED Lite-Pad (Rosco). ND: Neutral density filter. 50 mm lens: 50 mm focal length lens. Temperature was monitored with thermistors at the three corners of the plate indicated by arrowheads. (B) Scanner-array setup. 10 flatbed scanners are connected via USB connections to a PC running Linux. The red arrow indicates the direction of airflow within the scanner body.