Table 1.
SNR analyses of 2D images and 3D reconstructions of ModB2C2 before and after contrast enhancement.
| Enhancement on the noisy images of simulated ModB2C2 | Combination enhancement on the super high noisy images of simulated ModB2C2 | |||||||
|---|---|---|---|---|---|---|---|---|
| 2D image | 3D reconstruction | 2D image | 3D reconstruction | |||||
| raw | enhanced | raw | enhanced | raw | lp8Å | lp8Å + enh. | lp8Å | lp8Å + enh. |
| 0.80 | 1.34 | 0.70 | 1.09 | 0.25 | 1.49 | 2.27 | 4.06 | 4.64 |
| 0.50 | 0.80 | 0.42 | 0.66 | 0.20 | 0.90 | 1.31 | 3.27 | 3.89 |
| 0.30 | 0.53 | 0.27 | 0.43 | 0.15 | 0.81 | 1.14 | 2.54 | 3.09 |
The SNRs of the simulation of ModB2C2. “2D” represents the SNR in untilted image, “3D” represents the SNR in the 3D reconstruction, “raw” stands for the initial image, and “enahnced” is for the enhanced image. “lp8Å” is for the image after low-pass filtered at 8 Å, and “lp8Å + enh.” is for the image after low-pass filtered at 8 Å and then enhanced.