Fig. 1. (a) Setup of reflective GI in the scattering medium. n→, i→, and o→ denote the unit vectors which point in the direction of the surface normal, the incident beam, and the detection plane, respectively. θi and θo represent the incident angle and the reflective angle, respectively. (b) The probability distribution function of the speckle patterns from the scattering medium.

Fig. 2. Retrieved ghost-images of a reflective object with 3000 measurements under different concentrations of the scattering medium and incident angles. (a) No scattering medium. (b) The result based on (a) using MCS. (c), (d) The corresponding results when the latex spherical calibration particle added to NaCl solution is 1.2 and 2.4 mL, respectively. The first and the second rows correspond to the results under θi=π/12 and π/4, respectively. (e), (f) The dependence of the SNR and the CNR on the concentration of the scattering medium under different incident angles, respectively.

Fig. 3. Acquired images with θ=π/12 under (a) no scattering and (b) 1.9% scattering medium. (c), (d) The corresponding results when a large incident angle θ=π/4 is chosen. (e) The ghost-image under the same parameters as those in (d) except for the 2.4% scattering medium. Here, the first column is the result from traditional GI, and the second column corresponds to the case in BGI.

Fig. 4. Simulation results (a) with no scattering medium and (b) considering the scattering. The first and the second columns are the results from traditional GI and BGI, respectively.