Mapping mangrove forest with multispectral images: contribution of spectral unmixing technique and object based image analysis
Résumé
This chapter is a contribution to ongoing efforts to map and monitor mangrove
forest. It attempts to explain that statistical results are very dependant of methodology,
given many mistakes and discrepancies when date to date comparison is made without
the same methodological protocol at each date. The use of spectral unmixing technique
and Object Based Image Analysis (OBIA) can widely improve accuracy of maps and
spatial statistics. It gives opportunity to lay out a standard reproducible protocol which
can avoid main spatial errors. We focus on multispectral images and don’t take account
hyperspectral images.