Fig. 1. Principle of bifunctional scattering light modulation method applied on (a) scattering imaging and (b) optical illusion

Fig. 2. Experimental setup of scattering light modulation. (a) Schematic diagram of the experiment; (b) Picture of the experimental system

Fig. 2. [in Chinese]

Fig. 3. Directly imaging results of the whole system when there is no scattering medium on the imaging pathway. (a)-(c) Objects uploaded on DMD (letters of “F”, “S”, “U” respectively); (d)-(f) Directly imaging results corresponding to (a)-(c), respectively

Fig. 4. Imaging through a thin scattering layer with phase conjugation. (a) Imaging reuslt of object "F" (inset) with scattering medium; (b) Speckle patterns of a pinhole (subset) through scattering medium; (c) A random binary phase mask for phase retrieval; (d) Speckle patterns corresponding torandom binary phase mask; (e) Iteration curve; Amplitude (f) and phase (g) of the phase retrieval result; (h) Quadratic phase distribution; (i) Modulation phase for scattering imaging; (j) Scattering imaging result of the point source; (k)-(o) Scattering imaging results of letters "F", "S", "U" and pattern of "Swan", "Running man"

Fig. 5. Optical illusion using scattering light modulation. (a) Illusion target; (b) GS algorithm iteration curve; (c) Phase of GS algorithm; (d) A object of "F" (Subgraph: Speckle pattern without modulation); (e) and (f) Amplitude and phase of the scattering wavefront; (g) Modulation phase for optical illusion turning "F" to "L"; (h) Illusion result; (i)-(m) and (n)-(r) The same process of (d)-(h), but optical illusion of turning "S" to "L" and "U" to "L", respectively

Fig. 6. Modulation phase for optical illusion depends on the object on the DMD. (a)-(c) Object of letter “F”, “S” and “U”, respectively; (d) Modulation phase pattern for optical illusion of turning “F” to “L”; (e) Illusion result when (d) is modulated the scattering light of (a); (f) Image on CCD2 when (d) is modulated the scattering light of (b); (g) Image on CCD2 when (d) is modulated the scattering light of (c)

Fig. 7. FOV test result of the imaging system. (a) Imaging results of the pinholes without scattering; (b) Intensity distribution of (a); (c)-(d) Results when there is scattering medium on the imaging system

Fig. 8. Resolution testing results of the imaging system