Abstract:
Light scattering is a common phenomenon in nature. How to realize high resolution imaging through turbid media is an important problem to be solved urgently in the field of optical imaging. In early studies, multiple light scattering has been regarded as a barrier in imaging through haze, cloud, biological tissue and other complex media. However, recent studies have shown that scattering is not the basic limitation of imaging:photons still contain a lot of information after multiple scattering. In order to provide insight into how new computational optical techniques can address the issues of multiple light scattering, the recent progress of scattering imaging method based on wavefront shaping, speckle correlation and deep learning was summarized. The latest research shows that, wavefront shaping technology can achieve fast optical focusing inside dynamic scattering medium with high resolution; speckle correlation method can realize non-invasive imaging by single-shot speckle pattern; deep learning is able to recover the object hidden behind the white polystyrene plate with optical thickness of 13.4.