Super-resolution imaging with one complex filter based on compressive sensing

Super-resolution is being considered as one of the important goals for optical imaging and image processing. In this paper, we present a novel imaging technique that exceeds the limit of resolving power of diffraction-limited optical system to achieve super-resolution imaging, by combining the advantages of compressive sensing and complex annular filters. This technique is realized by utilizing a classical 4F optical system with a phase-only spatial light modulator. Furthermore, the feasibility of this technique is theoretically analyzed, and physically validated by laboratory experiments. Experimental results demonstrated that this technique improves the resolving power of diffraction-limited optical system by approximately 1.58 times, and the intensity image of high-resolution object can be recovered from 25% of the total number of measurements.

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