Remote Sensing for Natural Resources >
A multispectral image pansharpening algorithm based on nonsubsampled contourlet transform (NSCT) combined with a guided filter
Received date: 2023-07-14
Revised date: 2023-09-09
Online published: 2026-06-03
Remote sensing image fusion technology can combine and enhance information from two or more multi-source remote sensing images, making the fused image more accurate and comprehensive. The nonsubsampled contourlet transform (NSCT) is effective in extracting details from high-resolution remote sensing images through multi-scale and multi-directional decomposition, thus achieving image sharpening with high spatial resolution. However, traditional NSCT produces limited high-frequency details and is prone to introduce artifacts such as “ghosting” in fused images. To address this issue, the study proposed a new panchromatic sharpening fusion algorithm for remote sensing images by combining NSCT with a guided filter (GF). Specifically, the promoted algorithm extracted the detail components from histogram-matched images using the multi-scale, multi-direction decomposition and reconstruction properties of the NSCT. Meanwhile, it extracted multi-spectral detail components with panchromatic detail features using GF. Finally, the fused images with high-spatial and high-spectral resolutions were obtained by sharpening based on weighted detail components. The proposed algorithm was proved effective through both subjective and objective evaluations using multiple high-resolution remote sensing datasets.
XU Xinyu , LI Xiaojun , GE Junfei , LI Yikun . A multispectral image pansharpening algorithm based on nonsubsampled contourlet transform (NSCT) combined with a guided filter[J]. Remote Sensing for Natural Resources, 2025 , 37(1) : 24 -30 . DOI: 10.6046/gtzyyg.2023212
表1 WorldView-2图像客观评价指标计算结果Tab.1 Calculation results of objective evaluation indexes of WorldView-2 image |
| 方法 | 全分辨率评价 | 降分辨率评价 | ||||||
|---|---|---|---|---|---|---|---|---|
| Dλ | Ds | QNR | Q4 | SAM | ERGAS | UIQI | CC | |
| 本文算法 | 0.020 3 | 0.034 1 | 0.946 2 | 0.705 3 | 3.533 7 | 5.238 4 | 0.725 2 | 0.861 2 |
| GSA | 0.103 0 | 0.399 9 | 0.538 3 | 0.670 6 | 4.609 1 | 6.356 8 | 0.682 9 | 0.827 7 |
| HPF | 0.063 8 | 0.129 7 | 0.814 8 | 0.688 5 | 3.739 0 | 5.534 1 | 0.699 6 | 0.846 1 |
| SFIM | 0.059 3 | 0.131 1 | 0.817 4 | 0.691 0 | 3.826 1 | 5.621 6 | 0.706 8 | 0.843 3 |
| Indusion | 0.042 3 | 0.109 2 | 0.853 0 | 0.588 5 | 3.979 7 | 6.725 8 | 0.601 7 | 0.777 7 |
| MTF-GLP-HPM-PP | 0.113 6 | 0.268 9 | 0.648 1 | 0.701 7 | 4.115 7 | 5.616 7 | 0.714 6 | 0.847 0 |
| MTF-GLP-CBD | 0.042 6 | 0.132 7 | 0.830 4 | 0.698 6 | 4.293 6 | 5.740 5 | 0.711 4 | 0.849 0 |
表2 GF-2图像客观评价指标计算结果Tab.2 Calculation results of objective evaluation indexes of GF-2 image |
| 方法 | 全分辨率评价 | 降分辨率评价 | ||||||
|---|---|---|---|---|---|---|---|---|
| Dλ | Ds | QNR | Q4 | SAM | ERGAS | UIQI | CC | |
| 本文算法 | 0.034 2 | 0.062 7 | 0.905 2 | 0.802 5 | 3.855 1 | 4.230 8 | 0.798 2 | 0.868 9 |
| GSA | 0.123 3 | 0.355 7 | 0.564 9 | 0.753 6 | 5.221 9 | 5.804 6 | 0.698 9 | 0.807 7 |
| HPF | 0.070 5 | 0.153 2 | 0.787 1 | 0.798 3 | 3.965 5 | 4.491 9 | 0.781 3 | 0.852 0 |
| SFIM | 0.066 7 | 0.161 4 | 0.782 7 | 0.795 2 | 4.021 1 | 4.588 0 | 0.773 3 | 0.848 4 |
| Indusion | 0.041 5 | 0.112 8 | 0.850 4 | 0.655 0 | 4.326 7 | 5.957 6 | 0.626 5 | 0.734 3 |
| MTF-GLP-HPM-PP | 0.119 6 | 0.267 6 | 0.644 8 | 0.798 3 | 4.523 9 | 4.661 7 | 0.764 4 | 0.848 3 |
| MTF-GLP-CBD | 0.061 4 | 0.183 2 | 0.766 6 | 0.781 6 | 4.861 3 | 5.265 3 | 0.739 0 | 0.831 8 |
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
盖钧飞, 李小军, 赵鹤婷, 等. 结合脉冲耦合神经网络的自适应全色锐化算法[J]. 测绘科学, 2023, 48(1):60-69.
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
张涛, 刘军, 杨可明, 等. 结合Gram-Schmidt变换的高光谱影像谐波分析融合算法[J]. 测绘学报, 2015, 44(9):1042-1047.
|
| [10] |
吴一全, 王志来. 混沌蜂群优化的NSST域多光谱与全色图像融合[J]. 遥感学报, 2017, 21(4):549-557.
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
徐欣钰, 李小军, 赵鹤婷, 等. NSCT和PCNN相结合的遥感图像全色锐化算法[J/OL]. 自然资源遥感,[2023-09-18].http://kns.cnki.net/kcms/detail/10.1759.P.20221102.1831.020.html.
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
张立福, 彭明媛, 孙雪剑, 等. 遥感数据融合研究进展与文献定量分析(1992-2018)[J]. 遥感学报, 2019, 23(4):603-619.
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
/
| 〈 |
|
〉 |