Table 3 Image quality evaluation of sigsbee2B truncation model imaging results.

From: Least squares reverse time migration imaging with illumination preconditioned based on improved PRP conjugate gradients

Images generated by different methods

Evaluation indicators

PSNR/dB

SSIM

PRPCG-LSRTM imaging result of 30 iterations

15.0346

0.5225

IPRPCG-LSRTM imaging results of 30 iterations

16.0895

0.6738

IPRPCG-IP-LSRTM imaging results of 30 iterations

17.2597

0.7862

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