Wood Recognition and Quality Imaging Inspection Systems

Figure 7

Different types of defects: (a) sound knot (healthy, normal), (b) sound knot in radial plane, (c) black knot, (d) pin knots, (e) decayed knot, (f) knot hole, (g) resin pocket, (h) core stripe, (i) split, and (j) wane [54].

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)