Ant Colony Optimization Inversion Using the L1 Norm in Advanced Tunnel Detection

Figure 2

Inversion results for two models with low resistivity. (a) True resistivity of model 1. The results obtained after inversion of model 1 are shown in (b) using L1 norm and (c) using L2 norm. (d) Sketch of model 2. The results obtained after inversion of model 2 are shown in (e) using L1 norm and (f) using L2 norm. The black dotted frame represents the actual location of the low resistivity layer set by the model.

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