Ghost imaging of binary-valued objects by using a CCD and an equivalent photodiode

In this paper, compressive sensing was employed in pseudo-thermal ghost imaging in order to reconstruct binary-valued objects. A rotating ground glass plate illuminated by a laser beam with a wavelength of 635 nm produced a beam of pseudo-thermal light. A splitter was used to separate the beam into two, referred to as the transmitted light and the reflected light, and recorded by an equivalent photodiode and a CCD, respectively. The object was placed between the splitter and the photodiode. Total variation minimization method was used to implement the image reconstruction by applying the compressive sensing method. Experimental results show that the ghost imaging setup established can be used to obtain feasible results for binary-valued objects.