Image Processing Method for Automatic Discrimination of Hoverfly Species

Figure 5

An example of automatic detection of vein junctions in wing images of four selected hoverfly species: (a)–(d), detections are shown as red dots. Since detector is based on sliding-window, each vein junction is detected several times in the same image. Based on detector’s confidence level, different significance is given to each of the multiple detections corresponding to the same junction. Several magnified details from (b)-(c) are illustrated in (f) and (e), respectively.

(a) Chrysotoxum festivum

(b) Chrysotoxum vernale

(c) Melanostoma mellinum

(d) Melanostoma scalare

(e) Multiple detections

(f) Multiple detections