Fig. 1. Process of polarization spectral image fusion

Fig. 2. Equipment of polarization spectral imaging. (a) Camera prototype; (b) pixel arrangement diagram

Fig. 3. Pre-processing flowchart of polarization spectral imaging system

Fig. 4. Spectral analysis of camouflage targets. (a) Collected spectral cubes; (b) spectral curves of classic ground features in grassland background

Fig. 5. Image fusion process

Fig. 6. Polarization semantic guidance network structure

Fig. 7. Fusion process of non-downsampling contour wave transform

Fig. 8. Polarization characteristic images. (a) Intensity image I; (b) Stokes vector image Q; (c) Stokes vector image U; (d) DoLP image; (e) AoP image

Fig. 9. 700 nm band images generated by different fusion methods. (a) Intensity image; (b) DWT method^[23]; (c) GFF method^[24]; (d) PCNN method^[25]; (e) BFWLS method^[26]; (f) LRD method^[27]; (g) NSST method^[28]; (h) NSCT method^[18]; (i) proposed method

Fig. 10. Fusion performance of camouflage image under grassland background

Fig. 11. Ground truth image for annotated camouflage target

Fig. 12. Detection effects of camouflage targets

Fig. 13. Comparison of detection effect for different fusion methods and detection modes