The European optical goniometric facility : Technical description and first experiments on spectral unmixing
This paper presents the new European goniometric facility installed at the Joint Research Centre of the Commission of the European Union. This system allows independent positioning of a light source and a detector anywhere on a 2 m radius hemisphere centred on the target, which can then be used to perform bidirectional reflectance measurements. The control software allows full programming of an experiment, the graphical visualisation of the measurement geometry and the interface to a dedicated database for the experimental results. A first experiment is described in which multispectral CCD camera images were acquired on various targets (soils, canopies and synthetic leaves) under different illumination angles. The purpose was to provide a data set allowing the comparison of the projected area of spectral endmembers, as measured from the CCD images, with the result of linear spectral mixture inversion algorithms.
Bibliographic Reference: Paper presented: IGARSS '94. Pasadena (US), August 8-12, 1994
Availability: Available from (1) as Paper EN 38438 ORA
Record Number: 199411065 / Last updated on: 1994-11-28
Original language: en
Available languages: en