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Interferenceless coded aperture correlation holography high resolution compressive imaging driven by large size point object
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DOI：10.1016/j.optlastec.2025.114534.png)
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Abstract
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Achieving high resolution and low noise imaging in imaging systems is one of the important aims that optical system design is constantly pursuing. In this paper, we proposed a high-resolution compressed sensing resolution enhanced cross-correlation (CS-RECC) method for single-exposure hologram of the interferenceless coded aperture correlation holography (I-COACH) system. In the CS-RECC method, the Gerchberg-Saxton (GS) algorithm acquires the sparse coded phase mask satisfying the system intensity response diameter d and uses it for hologram recording. The high resolution and high signal-to-noise ratio (SNR) point spread hologram is obtained by the deconvolution algorithm, and the low background noise and high-resolution reconstructed image of a single-exposure hologram is obtained by the improved compressed sensing hologram reconstruction model. The simulation and experimental results verify the effectiveness of the proposed method in keeping high resolution and low background noise imaging, respectively. The CS-RECC method solves the difficulty that the imaging resolution of the I-COACH system is limited by the size of the recorded PSH pinhole. The proposed method has better anti-interference imaging capability for imaging complex samples with low SNR.
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