Robert R. De Wulf

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ENVISAT ASAR data is used for mapping and monitoring wetland vegetation in Lake Chad Basin, Africa. For mapping large areas at a coarse resolution, a fusion method based on the wavelet transform is used to combine ENVISAT ASAR Wide Swath data and SPOT-VEGETATION optical data. For more detailed mapping, ENVISAT ASAR Alternating Polarization images are used.(More)
—In this letter, we present a novel object-based approach addressing individual tree crown (ITC) detection to assess stand density from remotely sensed imagery in closed forest canopies: directional local filtering (DLF). DLF is a variant of local maximum filtering (LMF). Within locally homogeneous areas, it uses a 1-D neighborhood and simultaneously(More)
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