Fig. 14

Percentage change in the second largest eigenvalues of the normalized Laplacian matrix for noise levels \(\sigma = 0.01\) (left) and \(\sigma = 0.1\) (right).
Percentage change in the second largest eigenvalues of the normalized Laplacian matrix for noise levels \(\sigma = 0.01\) (left) and \(\sigma = 0.1\) (right).