Chinese Journal of Liquid Crystals and Displays, Volume. 37, Issue 4, 483(2022)
Adaptive low overlap multispectral image fast mosaic algorithm based on phase correlation enhancement
Fig. 1. Pulse diagram of phase correlation function of image.（a）Correctly match the pulse diagram；（b）Error matching pulse diagram.
Fig. 4. Schematic diagram of multispectral image A1 and A2 splicing
Fig. 5. Comparison of stitching effect between traditional phase correlation method and this algorithm.（a）Image to be spliced；（b）Traditional phase correlation pulse diagram；（c）Pulse diagram in this paper；（d）Splicing result diagram of traditional phase correlation method；（e）Stitching results of this algorithm shown in the figure.
Fig. 8. Information entropy change diagram of 16 channels of A1 and A2 images
Table 1. Mosaic results of five groups of mural spectral images
View tableView in ArticleTable 1. Mosaic results of five groups of mural spectral images
Image Image size/pixel Overlap rate/% Segmentation times time/s A1 A2 1 363 965 11.4 5 176 110 0.412 B1 B2 1 382 997 5 5 77 106 0.405 C1 C2 1 356 998 7.8 10 116 85 0.793 D1 D2 1 378 1 000 20.3 10 300 68 0.817 E1 E2 1 361 947 15.8 5 219 16 0.415
Table 2. Comparison of stitching results of different algorithms
View tableView in ArticleTable 2. Comparison of stitching results of different algorithms
Wavelength Algorithm Evaluation index SSIM PSNR RMSE Time/s 520 nm Harris 0.814 6 28.245 1 9.869 2 1.325 4 SIFT 0.966 2 36.248 9 2.345 7 1.742 5 FAST-SURF 0.943 2 32.854 1 5.421 3 0.972 4 BRISK-ORB 0.915 4 31.125 8 7.235 4 0.391 5 Ours 0.987 8 42.563 2 1.754 2 0.361 8 740 nm Harris 0.945 3 31.254 6 5.426 5 1.425 6 SIFT 0.985 6 41.265 4 1.863 4 1.845 9 FAST-SURF 0.981 5 40.786 9 2.045 8 1.043 6 BRISK-ORB 0.952 3 32.865 7 5.102 3 0.405 3 Ours 0.990 2 44.882 3 1.452 3 0.395 2 900 nm Harris 0.808 0 28.453 6 9.632 1 1.386 5 SIFT 0.956 4 33.245 1 3.852 4 1.802 3 FAST-SURF 0.952 1 32.742 5 3.245 7 1.005 0 BRISK-ORB 0.892 5 29.213 5 8.334 3 0.398 7 Ours 0.972 4 39.564 2 2.564 2 0.372 4
Table 3. Comparison of 16-channel splicing results
View tableView in ArticleTable 3. Comparison of 16-channel splicing results
Evaluation index Algorithm Harris SIFT FAST-SURF BRISK-ORB Ours IE/bit Max 7.439 6 7.545 4 7.529 6 7.486 4 7.625 4 Min 2.214 7 2.352 7 2.295 7 2.258 4 2.601 2 Mean 6.027 5 6.175 4 6.135 4 6.100 6 6.254 1 AG Max 8.863 2 9.653 6 9.542 5 9.011 5 10.235 1 Min 1.145 2 1.615 4 1.496 7 0.215 3 1.738 7 Mean 4.845 5 4.956 2 4.945 1 4.825 0 5.008 1 Time/s Sum 7.852 9.563 5.867 4.351 3.424
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Ting-ting JIA, Hui-qin WANG, Ke WANG, Zhan WANG, Gang ZHEN, Yuan LI. Adaptive low overlap multispectral image fast mosaic algorithm based on phase correlation enhancement[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(4): 483
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Received: Nov. 18, 2021
Accepted: --
Published Online: Jun. 20, 2022
The Author Email: Hui-qin WANG (hqwang@xauat.edu.cn)
