Figure 15.

Parameter selection. (A) Effect of confidence threshold values on image partitioning. ρ represents the ratio of low-confidence voxels over high-confidence structural voxels. The highlighted region denotes the heuristically “good” region for threshold selection. (B) Effect of mixing ratio and L_patch on DSC performance. Mixing Ratio^* is the minimum required number of S_H nodes in the 26-node neighborhood for a given seed voxel. Note that with a larger L_patch performance improves. Whereas, with a smaller L_patch or a higher mixing ratio^* the performance worsens due to poor coverage over S_L region. (C) Effect of mixing ratio and L_patch on computational cost. The light blue line shows the number of patches for given configuration as a reference. Note that the computation time increases exponentially with a higher L_patch and a smaller mixing ratio^* (Note: mixing ratio^* represents the equivalent number of minimum S_H node requirement in the 26-node neighborhood for the seed node selections).