Image Processing Method for Automatic Discrimination of Hoverfly Species

Figure 6

Illustration of constructed convex hulls used for characterization of each wing image in automatic discrimination of four selected hoverfly species. Convex hulls are created using detected landmark-points, which are drawn as red dots. Position of each landmark-point is computed as a centroid of multiple detections of the same junction. Multiple detections are illustrated in Figure 5.

(a) Chrysotoxum festivum

(b) Chrysotoxum vernale

(c) Melanostoma mellinum

(d) Melanostoma scalare