The saturation point improved by 32 percent when using
the
MVRVR
model, compared to the best previous model (
SVR
).
Furthermore, 15 percent of the study area has biomass that
falls between the saturation point of
MVRVR
and the saturation
point of
SVR
. The
MVRVR
model reached saturation point
at over 300 Mg/ha, and thereafter the estimation accuracy
was reduced. However, all four models were shown to have
a lower accuracy in this range of biomass, and none of the
Figure 2. Comparison of predicted AGB values using different estimation approaches.
Figure 3. Scatterplots of predicted versus measured AGB values.
46
January 2016
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
