Robert R. De Wulf

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Stand delineation estimation is one of the cornerstones of forest inventory mapping and a key element to forest management decision making. Stands are forest management units defined mainly by similar species composition, density, closure, height and age. Stand boundaries (and also attributes) are traditionally estimated through air photo interpretation.(More)
Stand density or tree density, expressed as the number of trees per unit area, is an important forest management parameter. It is used by foresters to evaluate regeneration, to assess the effect of forest management measures or as an indicator variable for other stand parameters like age, basal area and volume. A stand density estimation technique, based on(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)