Section: Software

ENVIAIR

Participants : Isabelle Herlin, Jean-Paul Berroir, Nicolas Mercier.

Enviair is a platform for processing multi-temporal data from the MODIS sensor and extracting land use information. It includes software libraries for:

• Manipulation of satellite images (I/O, management of acquisition dates and geographical coordinates, extraction of temporal data).

• Interpretation of multitemporal information (temporal filtering, computation of temporal features, classification programmes).

• Interpretation of MODIS metadata (pixel quality).

This software has been applied to deforestation monitoring in the high Taquari basin, Brazil (see Figure 2 ). It is registered commonly by INRIA and Embrapa (Brazilian agricultural research organization).

Figure 2. Left image: classification of low resolution data with the ENVIAIR software (forest in green, pasture in orange, deforestation in pink). Middle and right images: control using two high resolution Landsat images, acquired before and after the low resolution image. The deforestation is clearly visible from the center to the right images.