Figure 5

Segmentations for the noise brain image (size: $\mathbf{630}\mathbf{\times }\mathbf{630}$). (a) The original image. (b) The smooth image by Gaussian low-pass filter with $\sigma =1.0$. (c) Smoothed brain image with the AOS scheme ($\tau =20$, $\alpha =0.6$, twice iterations). (d) Algorithm DE-GLS. (e) Algorithm GLF-GLS. (f) CVM. (g)-(i) The segmentation counter of Algorithm DE-GLS, Algorithm GLF-GLS and CVM, respectively.