| 1 | 2 | 5 | 10 | 20 | 100 | ||
| 1 | 15.20 | 18.08 | 17.57 | 18.16 | 18.17 | 18.17 | |
| 1 | 16.20 | 18.39 | 16.35 | 18.40 | 18.40 | 18.40 | |
| 4 | 19.92 | 21.92 | 21.90 | 21.98 | 21.97 | 21.98 | |
| 4 | 20.05 | 22.37 | 22.36 | 22.47 | 22.48 | 22.49 | |
| 16 | 22.50 | 25.17 | 25.27 | 25.28 | 25.26 | 25.28 | |
| 16 | 23.59 | 26.17 | 26.40 | 26.37 | 26.38 | 26.40 |
In this paper, we propose new operator-splitting algorithms for the total variation regularized infimal convolution (TV-IC) model [
| Citation: |
Figure 4.
Recovery results by proposed algorithms and other compared algorithms (with SNRs(dB) below the figures) for the image "Cameraman" in the case of MPG noises which are generated with
Figure 7.
Rcovery results by SSN and BCA
Table 1. SNR changes w.r.t. the number of inner iterations using gradient descent method [8] for proposed BCA Algorithm
| 1 | 2 | 5 | 10 | 20 | 100 | ||
| 1 | 15.20 | 18.08 | 17.57 | 18.16 | 18.17 | 18.17 | |
| 1 | 16.20 | 18.39 | 16.35 | 18.40 | 18.40 | 18.40 | |
| 4 | 19.92 | 21.92 | 21.90 | 21.98 | 21.97 | 21.98 | |
| 4 | 20.05 | 22.37 | 22.36 | 22.47 | 22.48 | 22.49 | |
| 16 | 22.50 | 25.17 | 25.27 | 25.28 | 25.26 | 25.28 | |
| 16 | 23.59 | 26.17 | 26.40 | 26.37 | 26.38 | 26.40 |
Table 2. Denoising performance (First row: SNR in dB. Second row: SSIM.) with Poisson-Gaussian Noise
| Image | Noisy | TV+ |
TV+KL | TV+EPG | TV+SP | TV+KL+ |
TV+PD | BCA | BCA |
||
| Circle | 1 | 2.50 | 17.21 | 16.68 | 17.07 | 16.76 | 17.28 | 17.44 | 17.84 | 17.97 | |
| 0.0452 | 0.6147 | 0.4044 | 0.6580 | 0.4059 | 0.3975 | 0.7544 | 0.7125 | 0.9007 | |||
| 1 | 2.57 | 17.34 | 17.16 | 17.11 | 17.24 | 17.76 | 17.00 | 18.02 | 18.10 | ||
| 0.5494 | 0.6087 | 0.7997 | 0.7740 | 0.8678 | 0.8251 | 0.8711 | 0.8913 | 0.9029 | |||
| 4 | 5.92 | 21.48 | 20.44 | 20.74 | 20.77 | 21.29 | 21.64 | 22.01 | 21.78 | ||
| 0.0687 | 0.7149 | 0.4763 | 0.6260 | 0.5305 | 0.5259 | 0.9216 | 0.7153 | 0.9357 | |||
| 4 | 6.32 | 21.64 | 21.83 | 21.14 | 21.83 | 22.00 | 22.16 | 22.18 | 22.35 | ||
| 0.5793 | 0.7397 | 0.9385 | 0.9395 | 0.9385 | 0.9299 | 0.9466 | 0.9472 | 0.9180 | |||
| 16 | 9.88 | 24.64 | 22.33 | 22.54 | 22.62 | 23.89 | 23.54 | 25.28 | 25.04 | ||
| 0.0971 | 0.8411 | 0.5088 | 0.5315 | 0.5436 | 0.5438 | 0.8141 | 0.9697 | 0.8079 | |||
| 16 | 11.55 | 25.46 | 26.41 | 25.14 | 26.41 | 26.46 | 26.47 | 26.37 | 27.12 | ||
| 0.6149 | 0.8816 | 0.9500 | 0.9447 | 0.9500 | 0.9594 | 0.9651 | 0.9676 | 0.9168 | |||
| Average | 6.46 | 21.30 | 20.81 | 20.62 | 20.94 | 21.45 | 21.38 | 21.95 | 22.06 | ||
| 0.3258 | 0.7335 | 0.6796 | 0.745 | 0.7061 | 0.6969 | 0.8788 | 0.8673 | 0.8970 | |||
| Fluorescent Cells | 1 | 1.16 | 9.88 | 9.72 | 9.29 | 9.72 | 9.96 | 9.48 | 10.37 | 10.33 | |
| 0.0402 | 0.4861 | 0.4508 | 0.3149 | 0.4532 | 0.4512 | 0.4572 | 0.5026 | 0.4971 | |||
| 1 | 1.22 | 9.97 | 9.83 | 9.46 | 9.83 | 9.98 | 9.79 | 10.43 | 10.41 | ||
| 0.0598 | 0.5058 | 0.4954 | 0.3289 | 0.4954 | 0.5003 | 0.4471 | 0.5108 | 0.5014 | |||
| 4 | 3.14 | 11.10 | 11.58 | 11.12 | 11.54 | 11.75 | 11.62 | 11.66 | 12.06 | ||
| 0.1181 | 0.5554 | 0.5369 | 0.5093 | 0.5239 | 0.5588 | 0.5674 | 0.5753 | 0.5801 | |||
| 4 | 3.59 | 11.25 | 11.88 | 11.32 | 11.88 | 12.17 | 11.88 | 11.96 | 12.38 | ||
| 0.1680 | 0.5765 | 0.6078 | 0.4593 | 0.6078 | 0.6133 | 0.5531 | 0.6160 | 0.6139 | |||
| 16 | 5.77 | 13.43 | 12.66 | 12.52 | 12.64 | 13.27 | 13.45 | 13.37 | 13.50 | ||
| 0.2282 | 0.6424 | 0.5998 | 0.5271 | 0.5989 | 0.6383 | 0.6669 | 0.6557 | 0.6685 | |||
| 16 | 7.87 | 14.17 | 14.16 | 14.30 | 14.16 | 14.59 | 14.47 | 14.42 | 14.62 | ||
| 0.4003 | 0.7360 | 0.7228 | 0.6895 | 0.7228 | 0.7388 | 0.7309 | 0.7379 | 0.7368 | |||
| Average | 3.79 | 11.63 | 11.64 | 11.34 | 11.63 | 11.95 | 11.78 | 12.04 | 12.22 | ||
| 0.1691 | 0.5837 | 0.5689 | 0.4710 | 0.5670 | 0.5835 | 0.5704 | 0.5997 | 0.5996 | |||
| Cameraman | 1 | 1.97 | 13.06 | 14.25 | 13.13 | 14.19 | 14.30 | 14.30 | 14.59 | 14.56 | |
| 0.0496 | 0.4167 | 0.5498 | 0.3452 | 0.5322 | 0.5432 | 0.5524 | 0.5633 | 0.5644 | |||
| 1 | 2.00 | 13.09 | 14.36 | 13.04 | 14.36 | 14.40 | 14.33 | 14.57 | 14.52 | ||
| 0.0628 | 0.4238 | 0.4602 | 0.3342 | 0.4602 | 0.4760 | 0.4362 | 0.5854 | 0.5659 | |||
| 4 | 5.02 | 15.66 | 16.46 | 15.5 | 16.43 | 16.56 | 16.17 | 16.79 | 16.83 | ||
| 0.1178 | 0.5729 | 0.6552 | 0.4863 | 0.6540 | 0.6720 | 0.6422 | 0.6417 | 0.6655 | |||
| 4 | 5.28 | 15.81 | 16.27 | 15.64 | 16.27 | 16.47 | 16.14 | 16.99 | 17.00 | ||
| 0.1514 | 0.5879 | 0.6301 | 0.5027 | 0.6301 | 0.6160 | 0.6047 | 0.6697 | 0.6770 | |||
| 16 | 9.06 | 18.25 | 18.60 | 18.24 | 18.60 | 18.81 | 18.18 | 18.99 | 19.02 | ||
| 0.1992 | 0.6393 | 0.7126 | 0.6355 | 0.7181 | 0.7163 | 0.6527 | 0.7112 | 0.7214 | |||
| 16 | 10.24 | 18.88 | 19.44 | 18.83 | 19.44 | 19.64 | 19.59 | 19.81 | 19.53 | ||
| 0.2920 | 0.6980 | 0.7321 | 0.6616 | 0.7321 | 0.7503 | 0.7317 | 0.7614 | 0.7764 | |||
| Average | 5.60 | 15.79 | 16.56 | 15.73 | 16.55 | 16.70 | 16.45 | 16.96 | 16.91 | ||
| 0.1455 | 0.5564 | 0.6233 | 0.4940 | 0.6211 | 0.6290 | 0.6033 | 0.6555 | 0.6618 |
Table 3. Computational time of the proposed algorithms and TV+PD (in seconds)
| Image | TV+PD | BCA | BCA |
||
| Circle | 1 | 40.4971 | 4.6052 | 1.0314 | |
| 1 | 18.5340 | 4.6922 | 1.2650 | ||
| 4 | 7.3436 | 0.7641 | 0.7001 | ||
| 4 | 39.6196 | 1.1891 | 0.6030 | ||
| 16 | 36.3221 | 1.2652 | 0.4643 | ||
| 16 | 39.5773 | 0.6123 | 0.3070 | ||
| Average | 30.3156 | 2.1880 | 0.7285 | ||
| Fluorescent Cells | 1 | 21.7999 | 8.3016 | 2.1735 | |
| 1 | 41.6892 | 8.9243 | 2.5687 | ||
| 4 | 40.1406 | 4.1263 | 2.4025 | ||
| 4 | 38.6224 | 3.8464 | 2.0889 | ||
| 16 | 37.7174 | 7.3265 | 6.1742 | ||
| 16 | 7.7788 | 7.6185 | 1.1258 | ||
| Average | 31.2914 | 6.6906 | 2.7556 | ||
| Cameraman | 1 | 9.3735 | 1.3062 | 1.2272 | |
| 1 | 40.9848 | 3.2183 | 0.9053 | ||
| 4 | 36.8623 | 0.6872 | 1.5084 | ||
| 4 | 36.4358 | 0.6179 | 1.4209 | ||
| 16 | 3.3691 | 0.5151 | 0.9925 | ||
| 16 | 11.0407 | 0.3607 | 0.5260 | ||
| Average | 23.0140 | 1.1176 | 1.0967 |
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