Weighted Nuclear Norm Minimization Based Tongue Specular Reflection Removal

Figure 6

Comparison of specular reflection area detection results: (a) the original tongue image, (b) the detection result by using the proposed superpixel-based method, (c) the detection result of morphological dilation method by using disk-shaped structuring element with 1 × 1 pixel, and (d) 5 × 5 pixels.

(a)

(b)

(c)

(d)