Abstract
A method of extending the imaging range through scattering layers around a reference point (RP) is realized. Objects within the entire correlation range of the RP can be totally recovered. By scanning the light source, objects within the memory effect (ME) range of the RP are completely recovered with high quality. By combining the shift of a camera to move the object to the center of observation view, objects far away from the RP are retrieved with an improved signal-to-noise ratio. The extended imaging range is about 3.5 times the ME range and more than 16 times the imaging range with normal static illumination. The RP can be imprecisely placed at a distance from the objects instead of precisely replacing them owing to the extended imaging range. This simple-system method forcefully breaks the limitation of the ME range and is very easy to implement in practical applications, which is meaningful for the research in scattering imaging.
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