  Since the orbital insertion of the Rosetta spacecraft, comet
67P/Churyumov-Gerasimenko (67P/C-G) has been mapped by OSIRIS camera and VIRTIS
spectro-imager, producing a huge quantity of images and spectra of the comet's
nucleus. The aim of this work is to search for the presence of H$_2$O on the
nucleus which, in general, appears very dark and rich in dehydrated organic
material. After selecting images of the bright spots which could be good
candidates to search for H$_2$O ice, taken at high resolution by OSIRIS, we
check for spectral cubes of the selected coordinates to identify these spots
observed by VIRTIS. The selected OSIRIS images were processed with the OSIRIS
standard pipeline and corrected for the illumination conditions for each pixel
using the Lommel-Seeliger disk law. The spots with higher I/F were selected and
then analysed spectrophotometrically and compared with the surrounding area. We
selected 13 spots as good targets to be analysed by VIRTIS to search for the 2
micron absorption band of water ice in the VIRTIS spectral cubes. Out of the 13
selected bright spots, eight of them present positive H$_2$O ice detection on
the VIRTIS data. A spectral analysis was performed and the approximate
temperature of each spot was computed. The H$_2$O ice content was confirmed by
modeling the spectra with mixing (areal and intimate) of H$_2$O ice and dark
terrain, using Hapke's radiative transfer modeling. We also present a detailed
analysis of the detected spots.
