Multispectral
CCD acquisition
This is a digital color acquisition
of UV induced visibile fluorescence. It is performed
with a scientific cooled digital CCD
camera, a set of 8 narrow band
(50 nm) interferential filters, in the 350-780
nm range.
The radiation source is provided
by high pressure Mercury lamps
with high UV emission and low emission in the
visible range. The lamps may be additionally
equipped with a visible light blocking
filter.
The acquisition is performed with a standardized
procedure, implying the device prior lab calibration,
an on-site calibration, stable set-up, sensitivity,
non auto fluorescent filters, and radiation
source, whose characteristics are mentioned
in the technical report. This
will be provided together with the acquired
and processed data. Data processing will be
performed in order to enhance data fruition,
e.g. by differentiating and spatially locating
the various homogeneous areas, and comparing
them with the ones in our database,
in order to identify the different materials.
This method is specifically designed for this.
8 images, one for each band plus a recombined
panchromatic image, will be provided with 8
and 16 bit resolution, in raw and tiff
format (or similar, as agreed upon) on a CD
or DVD. If the acquisition consists of more
than one image, a mosaic of
the various images will be performed and provided.
Art-Test has a portable Dark Room in case it
be not easy to darken the environment where
to perform the acquisitions.
Average acquisition time: 2h/acquisition. |
