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DUAN Jin, ZHANG Hao, SONG Jingyuan, LIU Ju. Review of Polarization Image Fusion Based on Deep Learning[J]. Infrared Technology , 2024, 46(2): 119-128.
Citation: DUAN Jin, ZHANG Hao, SONG Jingyuan, LIU Ju. Review of Polarization Image Fusion Based on Deep Learning[J]. Infrared Technology , 2024, 46(2): 119-128.
shu

Review of Polarization Image Fusion Based on Deep Learning

  • College of Electronic Information Engineering, Changchun University of Science and Technology, Changchun 130022, China

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  • Received Date: June 04, 2023
  • Revised Date: August 08, 2023
    Graphical Abstract
    • Abstract
  • Polarization image fusion improves overall image quality by combining spectral and polarization information. It is used in different fields, such as image enhancement, spatial remote sensing, target identification and military defense. In this study, based on a review of traditional fusion methods using multi-scale transform, sparse representation, pseudo-coloration, etc. we focus on the current research status of polarization image fusion methods based on deep learning. First, the research progress of polarization image fusion based on convolutional neural networks and generative adversarial networks is presented. Next, related applications in target detection, semantic segmentation, image defogging, and three-dimensional reconstruction are described. Some publicly available high-quality polarization image datasets are collated. Finally, an outlook on future research is presented.
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  • [1]
    LI S, KANG X, FANG L, et al. Pixel-level image fusion: a survey of the state of the art[J]. Information Fusion, 2017, 33: 100-112. DOI: 10.1016/j.inffus.2016.05.004
    [2]
    ZHANG H, XU H, TIAN X, et al. Image fusion meets deep learning: a survey and perspective[J]. Information Fusion, 2021, 76: 323-336. DOI: 10.1016/j.inffus.2021.06.008
    [3]
    罗海波, 张俊超, 盖兴琴, 等. 偏振成像技术的发展现状与展望(特邀)[J]. 红外与激光工程, 2022, 51(1): 101-110.

    LUO Haibo, ZHANG Junchao, GAI Xingqin, et al. Development status and prospect of polarization imaging technology (Invited)[J]. Infrared and Laser Engineering, 2022, 51(1): 101-110.
    [4]
    周强国, 黄志明, 周炜. 偏振成像技术的研究进展及应用[J]. 红外技术, 2021, 43(9): 817-828. http://hwjs.nvir.cn/article/id/76230e4e-2d34-4b1e-be97-88c5023050c6

    ZHOU Qiangguo, HUANG Zhiming, ZHOU Wei. Research progress and application of polarization imaging technology[J]. Infrared Technology, 2021, 43(9): 817-828. http://hwjs.nvir.cn/article/id/76230e4e-2d34-4b1e-be97-88c5023050c6
    [5]
    段锦, 付强, 莫春和, 等. 国外偏振成像军事应用的研究进展(上)[J]. 红外技术, 2014, 36(3): 190-195. http://hwjs.nvir.cn/article/id/hwjs201403003

    DUAN Jin, FU Qiang, MO Chunhe, et al. Review of polarization imaging technology for international military application(Ⅰ)[J]. Infrared Technology, 2014, 36(3): 190-195. http://hwjs.nvir.cn/article/id/hwjs201403003
    [6]
    莫春和, 段锦, 付强, 等. 国外偏振成像军事应用的研究进展(下)[J]. 红外技术, 2014, 36(4): 265-270. http://hwjs.nvir.cn/article/id/hwjs201404002

    MO Chunhe, DUAN Jin, FU Qiang, et al. Review of polarization imaging technology for international military application(Ⅱ)[J]. Infrared Technology, 2014, 36(4): 265-270. http://hwjs.nvir.cn/article/id/hwjs201404002
    [7]
    王霞, 赵家碧, 孙晶, 等. 偏振图像融合技术综述[J]. 航天返回与遥感, 2021, 42(6): 9-21.

    WANG Xia, ZHAO Jiabi, SUN Jing, et al. Review of polarization image fusion technology[J]. Aerospace Return and Remote Sensing, 2021, 42(6): 9-21.
    [8]
    LI X, YAN L, QI P, et al. Polarimetric imaging via deep learning: a review[J]. Remote Sensing, 2023, 15(6): 1540. DOI: 10.3390/rs15061540
    [9]
    YANG Fengbao, DONG Anran, ZHANG Lei, et al. Infrared polarization image fusion based on combination of NSST and improved PCA[J]. Journal of Measurement Science and Instrumentation, 2016, 7(2): 176-184.
    [10]
    杨风暴, 董安冉, 张雷, 等. DWT, NSCT和改进PCA协同组合红外偏振图像融合[J]. 红外技术, 2017, 39(3): 201-208. http://hwjs.nvir.cn/article/id/hwjs201703001

    YANG Fengbao, DONG Anran, ZHANG Lei, et al. Infrared polarization image fusion using the synergistic combination of DWT, NSCT and improved PCA[J]. Infrared Technology, 2017, 39(3): 201-208. http://hwjs.nvir.cn/article/id/hwjs201703001
    [11]
    沈薛晨, 刘钧, 高明. 基于小波-Contourlet变换的偏振图像融合算法[J]. 红外技术, 2020, 42(2): 182-189. http://hwjs.nvir.cn/article/id/hwjs202002013

    SHEN Xuechen, LIU Jun, GAO Ming. Polarization image fusion algorithm based on Wavelet-Contourlet transform[J]. Infrared Technology, 2020, 42(2): 182-189. http://hwjs.nvir.cn/article/id/hwjs202002013
    [12]
    张雨晨, 李江勇. 基于小波变换的中波红外偏振图像融合[J]. 激光与红外, 2020, 50(5): 578-582.

    ZHANG Yuchen, LI Jiangyong. Polarization image fusion based on wavelet transform[J]. Laser & Infrared, 2020, 50(5): 578-582.
    [13]
    王策, 许素安. 基于Retinex和小波变换的水下偏振图像融合方法[J]. 应用激光, 2022, 42(8): 116-122.

    WANG Ce, XU Suan. Underwater polarization image fusion method based on Retinex and wavelet transform[J]. Applied Laser, 2022, 42(8): 116-122.
    [14]
    陈锦妮, 陈宇洋, 李云红, 等. 基于结构与分解的红外光强与偏振图像融合[J]. 红外技术, 2023, 45(3): 257-265. http://hwjs.nvir.cn/article/id/379e87a8-b9c0-4081-820c-ccd63f3fe4f0

    CHEN Jinni, CHEN Yuyang, LI Yunhong, et al. Fusion of infrared intensity and polarized images based on structure and decomposition[J]. Infrared Technology, 2023, 45(3): 257-265. http://hwjs.nvir.cn/article/id/379e87a8-b9c0-4081-820c-ccd63f3fe4f0
    [15]
    LIU Y, LIU S, WANG Z. A general framework for image fusion based on multiscale transform and sparse representation[J]. Information Fusion, 2015, 24(C): 147-164.
    [16]
    朱攀, 刘泽阳, 黄战华. 基于DTCWT和稀疏表示的红外偏振与光强图像融合[J]. 光子学报, 2017, 46(12): 207-215.

    ZHU Pan, LIU Zeyang, HUANG Zhanhua. Infrared polarization and intensity image fusion based on dual-tree complex wavelet transform and sparse representation[J]. Acta Photonica Sinica, 2017, 46(12): 207-215.
    [17]
    ZHU P, LIU L, ZHOU X. Infrared polarization and intensity image fusion based on bivariate BEMD and sparse representation[J]. Multimedia Tools and Applications, 2021, 80(3): 4455-4471. DOI: 10.1007/s11042-020-09860-z
    [18]
    ZHANG S, YAN Y, SU L, et al. Polarization image fusion algorithm based on improved PCNN[C]//Proceedings of SPIE-The International Society for Optical Engineering, 2013, 9045.
    [19]
    李世维, 黄丹飞, 王惠敏, 等. 基于BEMD和自适应PCNN的偏振图像融合[J]. 激光杂志, 2018, 39(3): 94-98.

    LI Shiwei, HUANG Danfei, WANG Huimin, et al. Polarization image fusion based on BEMD and adaptive PCNN[J]. Laser Journal, 2018, 39(3): 94-98.
    [20]
    于津强, 段锦, 陈伟民, 等. 基于NSST与自适应SPCNN的水下偏振图像融合[J]. 激光与光电子学进展, 2020, 57(6): 103-113.

    YU Jinqiang, DUAN Jin, CHEN Weimin, et al. Underwater polarization image fusion based on NSST and adaptive SPCNN[J]. Laser & Optoelectronics Progress, 2020, 57(6): 103-113.
    [21]
    叶松, 汤伟平, 孙晓兵, 等. 一种采用IHS空间表征偏振遥感图像的方法[J]. 遥感信息, 2006, 21(2): 11-13.

    YE Song, TANG Weiping, SUN Xiaobing, et al. Characterization of the polarized remote sensing images using IHS color system[J]. Remote Sensing Information, 2006, 21(2): 11-13.
    [22]
    赵永强, 潘泉, 张洪才. 自适应多波段偏振图像融合研究[J]. 光子学报, 2007, 36(7): 1356-1359.

    ZHAO Yongqiang, PAN Quan, ZHANG Hongcai. Research on adaptive multi-band polarization image fusion[J]. Acta Photonica Sinica, 2007, 36(7): 1356-1359.
    [23]
    赵永强, 潘泉, 张洪才. 一种新的全色图像与光谱图像融合方法研究[J]. 光子学报, 2007, 36(1): 180-183.

    ZHAO Yongqiang, PAN Quan, ZHANG Hongcai. A new spectral and panchromatic images fusion method[J]. Acta Photonica Sinica, 2007, 36(1): 180-183.
    [24]
    周浦城, 韩裕生, 薛模根, 等. 基于非负矩阵分解和IHS颜色模型的偏振图像融合方法[J]. 光子学报, 2010, 39(9): 1682-1687.

    ZHOU Pucheng, HAN Yusheng, XUE Menggen, et al. Polarization image fusion method based on non-negative matrix factorization and IHS color model[J]. Acta Photonica Sinica, 2010, 39(9): 1682-1687.
    [25]
    周浦城, 张洪坤, 薛模根. 基于颜色迁移和聚类分割的偏振图像融合方法[J]. 光子学报, 2011, 40(1): 149-153.

    ZHOU Pucheng, ZHANG Hongkun, XUE Mogen. Polarization image fusion method using color transfer and clustering-based segmentation[J]. Acta Photonica Sinica, 2011, 40(1): 149-153.
    [26]
    李伟伟, 杨风暴, 蔺素珍, 等. 红外偏振与红外光强图像的伪彩色融合研究[J]. 红外技术, 2012, 34(2): 109-113. DOI: 10.3969/j.issn.1001-8891.2012.02.010

    LI Weiwei, YANG Fengbao, LIN Suzhen, et al. Study on pseudo-color fusion of infrared polarization and intensity image[J]. Infrared Technology, 2012, 34(2): 109-113. DOI: 10.3969/j.issn.1001-8891.2012.02.010
    [27]
    孙晶. 多波段偏振图像融合方法研究[D]. 北京: 北京理工大学, 2019.

    SUN Jing. Research on Multi-band Polarization Image Fusion Method[D]. Beijing: Beijing Institute of Technology, 2019.
    [28]
    苏子航. 多波段偏振图像信息校正与增强技术研究[D]. 北京: 北京理工大学, 2021.

    SU Zihang. Research on Multi-band Polarization Image Information Correction and Enhancement Technology[D]. Beijing: Beijing Institute of Technology, 2021.
    [29]
    HU J, MOU L, Schmitt A, et al. FusioNet: a two-stream convolutional neural network for urban scene classification using PolSAR and hyperspectral data[C]//Proceedings of the 2017 Joint Urban Remote Sensing Event (JURSE), 2017: 1-4.
    [30]
    ZHANG J, SHAO J, CHEN J, et al. PFNet: an unsupervised deep network for polarization image fusion[J]. Optics Letters, 2020, 45(6): 1507-1510. DOI: 10.1364/OL.384189
    [31]
    WANG S, MENG J, ZHOU Y, et al. Polarization image fusion algorithm using NSCT and CNN[J]. Journal of Russian Laser Research, 2021, 42(4): 443-452. DOI: 10.1007/s10946-021-09981-2
    [32]
    ZHANG J, SHAO J, CHEN J, et al. Polarization image fusion with self-learned fusion strategy[J]. Pattern Recognition, 2021, 118(22): 108045.
    [33]
    XU H, SUN Y, MEI X, et al. Attention-Guided polarization image fusion using salient information distribution[J]. IEEE Transactions on Computational Imaging, 2022, 8: 1117-1130. DOI: 10.1109/TCI.2022.3228633
    [34]
    闫德利, 申冲, 王晨光, 等. 强度图像和偏振度图像融合网络的设计[J]. 光学精密工程, 2023, 31(8): 1256-1266.

    YAN Deli, SHEN Chong, WANG Chenguang, et al. Design of intensity image and polarization image fusion network[J]. Optics and Precision Engineering, 2023, 31(8): 1256-1266.
    [35]
    Goodfellow I, Pouget-Abadie J, Mirza M, et al. Generative adversarial nets[C]//Advances in Neural Information Processing Systems, 2014: 2672-2680.
    [36]
    MA J, YU W, LIANG P, et al. FusionGAN: a generative adversarial network for infrared and visible image fusion[J]. Information Fusion, 2019, 48: 11-26. DOI: 10.1016/j.inffus.2018.09.004
    [37]
    ZHAO C, WANG T, LEI B, Medical image fusion method based on dense block and deep convolutional generative adversarial network[J]. Neural Comput. & Applic., 2021, 33: 6595-6610.
    [38]
    LIU Q, ZHOU H, XU Q, et al. PSGAN: a generative adversarial network for remote sensing image pan-sharpening[J]. IEEE Transactions on Geoscience and Remote Sensing, 2021, 59(12): 10227-10242. DOI: 10.1109/TGRS.2020.3042974
    [39]
    MA J, XU H, JIANG J, et al. DDcGAN: a dual-discriminator conditional generative adversarial network for multi-resolution image fusion[J]. IEEE Transactions on Image Processing, 2020, 29: 4980-4995. DOI: 10.1109/TIP.2020.2977573
    [40]
    LI J, HUO H, LI C, et al. Attention FGAN: infrared and visible image fusion using attention-based generative adversarial networks[J]. IEEE Transactions on Multimedia, 2021, 23: 1383-1396. DOI: 10.1109/TMM.2020.2997127
    [41]
    MA J, ZHANG H, SHAO Z, et al. GANMcC: a generative adversarial network with multi-classification constraints for infrared and visible image fusion[J]. IEEE Transactions on Instrumentation and Measurement, 2021, 70: 1-14.
    [42]
    WEN Z, WU Q, LIU Z, et al. Polar-spatial feature fusion learning with variational generative-discriminative network for PolSAR classi-fication[J]. IEEE Transactions on Geoscience and Remote Sensing, 2019, 57(11): 8914-8927. DOI: 10.1109/TGRS.2019.2923738
    [43]
    DING X, WANG Y, FU X. Multi-polarization fusion generative adversarial networks for clear underwater imaging[J]. Optics and Lasers in Engineering, 2022, 152: 106971. DOI: 10.1016/j.optlaseng.2022.106971
    [44]
    LIU J, DUAN J, HAO Y, et al. Semantic-guided polarization image fusion method based on a dual-discriminator GAN[J]. Optic Express, 2022, 30: 43601-43621. DOI: 10.1364/OE.472214
    [45]
    SUN R, SUN X, CHEN F, et al. An artificial target detection method combining a polarimetric feature extractor with deep convolutional neural networks[J]. International Journal of Remote Sensing, 2020, 41: 4995-5009. DOI: 10.1080/01431161.2020.1727584
    [46]
    ZHANG Y, Morel O, Blanchon M, et al. Exploration of deep learning based multimodal fusion for semantic road scene segmen-tation[C]//14th International Conference on Computer Vision Theory and Applications, 2019: 336-343.
    [47]
    XIANG K, YANG K, WANG K. Polarization-driven semantic segmentation via efficient attention-bridged fusion[J]. Optic Express, 2021, 29: 4802-4820. DOI: 10.1364/OE.416130
    [48]
    霍永胜. 基于偏振的暗通道先验去雾[J]. 物理学报, 2022, 71(14): 112-120.

    HUO Yongsheng. Polarization-based research on a priori defogging of dark channel[J]. Acta Physica Sinica, 2022, 71(14): 112-120.
    [49]
    孟宇飞, 王晓玲, 刘畅, 等. 四分暗通道均值比较法的双角度偏振图像去雾[J]. 激光与光电子学进展, 2022, 59(4): 232-240.

    MENG Yufei, WANG Xiaoling, LIU Chang, et al. Dehazing of dual angle polarization image based on mean comparison of quartering dark channels[J]. Laser & Optoelectronics Progress, 2022, 59(4): 232-240.
    [50]
    张肃, 战俊彤, 付强, 等. 基于多小波融合的偏振探测去雾技术[J]. 激光与光电子学进展, 2018, 55(12): 468-477.

    ZHANG Su, ZHAN Juntong, FU Qiang, et al. Polarization detection defogging technology based on multi-wavelet fusion[J]. Laser & Optoelectronics Progress, 2018, 55(12): 468-477.
    [51]
    HUANG F, KE C, WU X, et al. Polarization dehazing method based on spatial frequency division and fusion for a far-field and dense hazy image[J]. Applied Optics, 2021, 60: 9319-9332. DOI: 10.1364/AO.434886
    [52]
    周文舟, 范晨, 胡小平, 等. 多尺度奇异值分解的偏振图像融合去雾算法与实验[J]. 中国光学, 2021, 14(2): 298-306.

    ZHOU Wenzhou, FAN Chen, HU Xiaoping, et al. multi-scale singular value decomposition polarization image fusion defogging algorithm and experiment[J]. Chinese Optics, 2021, 14(2): 298-306.
    [53]
    李轩, 刘飞, 邵晓鹏. 偏振三维成像技术的原理和研究进展[J]. 红外与毫米波学报, 2021, 40(2): 248-262.

    LI Xuan, LIU Fei, SHAO Xiaopeng. Research progress on polarization 3D imaging technology[J]. Journal of Infrared and Millimeter Waves, 2021, 40(2): 248-262.
    [54]
    王霞, 赵雨薇, 金伟其. 融合光学偏振的三维成像技术进展(特邀)[J]. 光电技术应用, 2022, 37(5): 33-43.

    WANG Xia, ZHAO Yuwei, JIN Weiqi. Overview of polarization-based three-dimensional imaging techniques(Invited)[J]. Opto-electronic Technology Application, 2022, 37(5): 33-43.
    [55]
    杨锦发, 晏磊, 赵红颖, 等. 融合粗糙深度信息的低纹理物体偏振三维重建[J]. 红外与毫米波学报, 2019, 38(6): 819-827.

    YANG Jinfa, YAN Lei, ZHAO Hongying, et al. Shape from polarization of low-texture objects with rough depth information[J]. Journal of Infrared and Millimeter Waves, 2019, 38(6): 819-827.
    [56]
    张瑞华, 施柏鑫, 杨锦发, 等. 基于视差角和天顶角优化的偏振多视角三维重建[J]. 红外与毫米波学报, 2021, 40(1): 133-142.

    ZHANG Ruihua, SHI Baixin, YANG Jinfa, et al. Polarization multi-view 3D reconstruction based on parallax angle and zenith angle optimization[J]. Journal of Infrared and Millimeter Wave, 2021, 40(1): 133-142.
    [57]
    BA Y, Gilbert A, WANG F, et al. Deep shape from polarization[C]//Computer Vision–ECCV 2020: 16th European Conference, 2020: 554-571.
    [58]
    陈创斌. 基于偏振信息的表面法线估计[D]. 广州: 广东工业大学, 2021.

    CHEN Chuangbin. Surface Normal Estimation Based on Polarization Information[D]. Guangzhou: Guangdong University of Technology, 2021.
    [59]
    王晓敏. 融合偏振和光场信息的低纹理目标三维重建算法研究[D]. 太原: 中北大学, 2022.

    WANG Xiaomin. Research on Low Texture Target 3D Reconstruction Algorithm Integrating Polarization and Light Field Information[D]. Taiyuan: North University of China, 2022.
    [60]
    ZENG X, LUO Y, ZHAO X, et al. An end-to-end fully-convolutional neural network for division of focal plane sensors to reconstruct S0, DoLP, and AoP[J]. Optic Express, 2019, 27: 8566-8577. DOI: 10.1364/OE.27.008566
    [61]
    Morimatsu M, Monno Y, Tanaka M, et al. Monochrome and color polarization demosaicking using edge-aware residual interpolation [C]//2020 IEEE International Conference on Image Processing(ICIP), 2020: 2571-2575.
    [62]
    LI N, ZHAO Y, PAN Q, et al. Full-time monocular road detection using zero-distribution prior of angle of polarization[C]//European Conference on Computer Vision (ECCV), 2020: 457-473.
    [63]
    LI N, ZHAO Y, PAN Q, et al. Illumination-invariant road detection and tracking using LWIR polarization characteristics[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2021, 180: 357-369. DOI: 10.1016/j.isprsjprs.2021.08.022
    [64]
    SUN Y, ZHANG J, LIANG R. Color polarization demosaicking by a convolutional neural network[J]. Optic Letter, 2021, 46: 4338-4341. DOI: 10.1364/OL.431919
    [65]
    QIU S, FU Q, WANG C, et al. Linear polarization demosaicking for monochrome and colour polarization focal plane arrays[J]. Computer Graphics Forum, 2021, 40: 77-89. DOI: 10.1111/cgf.14204
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