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Edge detection in gradient ghost imaging through complex media
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DOI：10.1063/5.0166946.png)
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Abstract
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In this Letter, we report on high-contrast gradient ghost imaging (GGI) through dynamic and complex scattering media for edge detection. By introducing a reference beam in the designed setup to correct dynamic change of scaling factors induced by dynamic and complex scattering media, the mismatches between illumination patterns and single-pixel intensity measurements can be corrected. Then, edge information of a sample can be obtained through dynamic and complex scattering media with dual single-pixel detections. The proposed scheme can implement direct edge detection without any postprocessing. It is experimentally verified that the proposed method can realize high-contrast GGI of unknown objects through various dynamic and complex scattering media where conventional schemes cannot work. Our experimental results suggest that the proposed method broadens and deepens the GGI, offering a potential for edge detection in diverse applications.
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