A new technique that generates a sharp image through the use of a low-cost, random scattering medium in real-time could offer a solution to the challenges posed by blurred images. When light travels through a light-scattering medium, it is dispersed rather than absorbed, resulting in the loss of
Illustration of the speckle-correlation imaging system designed by KAUST researchers and collaborators. The technique can produce real-time imaging of static and moving objects using simple or low-cost devices. Credit: 2023 KAUST; Wenhong Yang
Previous methods for reconstructing scatted light have required some initial knowledge of the object and the ability to control the wavefront of light illuminating it. This has involved complicated optical elements and high vulnerability to motion and mechanical instability. Computational algorithms are then able to post-process the detected light to generate an image.
Wenhong Yang and Qiaoqiang Gan from KAUST, working with Jietao Liu from the Xiong’an Institute of Innovation in China, have developed a way to directly obtain a clear image from a single shot of the speckle image.
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