Fig. 1. Schematic of imaging of light passing through scattering media based on speckle correlation

Fig. 2. Spectral theory of mosaic integrated filter

Fig. 3. Experimental setup for multi-spectral imaging based on optical memory effect

Fig. 4. Scattering imaging experiment using xenon lamp. (a) Diagram of experimental light path; (b) speckle pattern captured by multi-spectral detector; (c) speckle pattern of each band

Fig. 5. Results of imaging experiment based on xenon light source. (a)--(f) Speckle pattern of each band; (g)--(l) autocorrelation images; (m)--(r) power spectra; (s)--(x) reconstructed images of object (image is doubled in size)

Fig. 6. Results of color processing of restored images in three bands. (a) 488 nm; (b) 522 nm; (c) 641 nm; (d) RGB

Fig. 7. Simulation results. (a) Speckle pattern; (b) spectrum of Fig. 7(a); (c) autocorrelation of Fig. 7(a); (d) superimposed meshes of speckle pattern; (e) spectrum of Fig. 7(d); (f) autocorrelation of Fig. 7(d)

Fig. 8. Experimental setup for single-frame speckle imaging based on optical memory effect

Fig. 9. Noise verification experimental results for speckle interval sampling. (a)--(d) Sampling interval Δ is 2; (e)--(h) Sampling interval Δ is 4; (i)--(l) Sampling interval Δ is 4; (m)--(p) Sampling interval Δ is 8

Fig. 10. Comparison of 3D images of light intensity distributions before and after noise removal by autocorrelation preprocessing. (a) Before noise removal; (b) after noise removal

Fig. 11. Experimental imaging results of 6 different wavebands obtained after preprocessing speckle images and autocorrelation images generated under xenon light source illumination. (a)--(f) Speckle patterns; (g)--(l) autocorrelation images; (m)--(r) power spectra; (s)--(x) reconstructed results of object (image is doubled in size)