Boccardo, Piero
Physical data Scanner performance
Main dimension (L X diam.) | 435X210 mm Line scan
Weight Approx. 13 kg Scanning range x40? (80? total)
Interface Parallel, ECP Scanning mechanism Rotating polygonal mirror
| Power supply 11-18 V DC, max. 3 A Scanning rate 20 scans/s
Angle stepwidth 0.24?
Table 2 — Physical data Angle readout accuracy | 0.036?
Frame scan
Scanning range +150° (300° total)
Temperatnre range Scanning mechanism Motor driven optical head
Operation 0 50°C Scanning rate 3%/s
Storage 20 C200 °C Angle readout accuracy | 0.018°
Angle readout accuracy | 0.018?
Table 4 — Temperature range
Table 3 — Scanner performances
1.3 Acquisition and post-processing software
The software included with the laser-scanner instrument allows both the assistance in the acquisition phase and image post-
processing. The starting shell (fig. 6) is the same for the two modes.
” [21226 rS "T disuaqu|
Figure 7 — Range image
” Progress Bar
=
Figure 6 — The software starting interface
Figure 8 — Intensity image
It is possible to control line and frame scan dimensions, viewing the acquiring image in real-time, filtering it both from
radiometric and distance point of view, and obviously zooming and pan functions are always available. T
Every acquisition is composed by two different images: the range one (fig. 7) mea
point from the instrument (where the 2 bytes field corresponds to the distance me
image (fig. 8) measure the reflectivity of the target in the near-infrared spectral band
sures the distance of every single
asured in cm) while the intensity
(0.9 um wavelength)
72 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000
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