This is a
digital multispectral colorimetric acquisition.
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 has a continuous emission spectrum, and
rich emission in the long wavelength range.
The colorimetric coordinates may be provided,
and their variation over two or more distinct
acquisitions, with the computation of the DE
(NorMaL 43/93 recommendations).
The acquisition is performed with a standardized
procedure, implying prior lab calibration of the device,
an on-site calibration, stable set-up, sensitivity,
and radiation source, whose characteristics
are mentioned in the technical report. This
will be provided together with the acquired
and processed data.
Data processing can be
performed in order to enhance data fruition,
e.g. by differentiating and spatially
locating the various homogeneous areas,
and comparing their data with the ones in our database,
in order to identify the different materials.
This method is specifically designed for this.
See also >
Data processing and modeling
8 images, one for each band plus a 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 compiled and provided.
Average acquisition time: 2h/acquisition. |
