Hyperspectral imaging is an important visual modality with growing interest and range of
applications. The latter, however, is hindered by the fact that existing devices are limited in …

Hyperspectral signal reconstruction aims at recovering the original spectral input that
produced a certain trichromatic (RGB) response from a capturing device or observer. Given …

The use of sky cameras for nocturnal aerosol characterization is discussed in this study. Two
sky cameras are configured to take High Dynamic Range (HDR) images at Granada and …

This paper proposes a method to obtain spectral sky radiances, at three wavelengths (464,
534 and 626 nm), from hemispherical sky images. Images are registered with the All-Sky …

Among the factors affecting the solar radiation that reaches the ground, clouds play a key
role in its short-term variability causing events ranging from almost total reduction to …

A new method is presented for retrieval of the aerosol and cloud optical depth using a CCD
camera equipped with a fish-eye lens (all-sky imager system). In a first step, the proposed …

Spectral sky radiance (380–760 nm) is derived from measurements with a hemispherical sky
imager (HSI) system. The HSI consists of a commercial compact CCD (charge coupled …

Whole sky spectral radiance distribution measurements are difficult and expensive to obtain,
yet important for real-time applications of radiative transfer, building performance, physically …

According to the low reconstruction efficiency and precision, a kind of spectral reflectance
reconstruction method based on the algorithm of compressed sensing is provided. It can …

Methods for estimating spectral distribution of sky radiance from images captured by a digital
camera and for accurately estimating spectral responses of the camera are proposed …