Strip Steel Surface Defects Recognition Based on SOCP Optimized Multiple Kernel RVM

Figure 7

Edge information of the defect images.

(a) Edge of scratches

(b) Edge of abrasions

(c) Edge of scars

(d) Edge of roller marks

(e) Edge of holes

(f) Edge of edge cracks

(g) Edge of surface upwarping

(h) Edge of pitting