Nonreference Medical Image Edge Map Measure

Figure 3

Using measures to select optimal edge detection algorithms. (a) Original CT abdomen image. (b)–(f) Edge detection results from (b) Canny, (c) Sobel, (d) Roberts, (e) LoG, and(f) Prewitt. The optimal edge maps with highest NREM value and Yitzhaky’s measure value are in bold.

(a)

(b) NREM = 0.1917; Yitzhaky’s = −1.1953

(c) NREM = 0.8506; Yitzhaky’s = 0.5773

(d) NREM = 0.7443; Yitzhaky’s = −0.3462

(e) NREM = 0.6905; Yitzhaky’s = −0.6754

(f) NREM = 0.6905; Yitzhaky’s = 0.5866