Fig. 3
From: A novel time-difference electrical impedance tomography algorithm using multi-frequency information
Image results for two-step iteration: Perturbation conductivity images of Targets 0–4 using a DLS under SNR = 60 dB, b SC under SNR = 60 dB, c DLS under SNR = 80 dB, d SC under SNR = 80 dB. For each image, the color bar represents the range of the conductivity change, and the numbers represent the maximum range of change. The unit is S/m