Super-resolution imaging via sparsity constraint and sparse speckle illumination<xref rid="cpb_27_7_074202fn1" ref-type="fn">*</xref> <fn id="cpb_27_7_074202fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 61571427).</p> </fn>

Super-resolution imaging via sparsity constraint and sparse speckle illumination* *

Project supported by the National Natural Science Foundation of China (Grant No. 61571427).

Wang Pengwei^{1, 2}, Li Wei^{2, 3}, Wang Chenglong^{1, 2}, Bo Zunwang¹, Gong Wenlin^{1, †}

(color online) (a₁) Original object. (a₂) The PSF corresponding to a spatial resolution of 41.4 μm. (a₃) Cross section of PSF along (x,y = 0) of (a₂). (b₁)–(b₅) The images recorded by the CCD camera in different detection SNR (the image area labeled by the red rectangular box is 120 × 120 pixels). (c₁)–(c₅) Single-frame reconstruction results via uniform illumination (the detection area recorded by the CCD camera is 240 × 240 pixels). (d₁)–(d₅) Single-frame reconstruction results via uniform illumination based on the detection data shown in the red rectangular box. (e₁)–(e₅) One frame of detection image in different detection SNR for SISC-SSI. (f₁)–(f₅) The reconstruction results corresponding to the images of (e₁)–(e₅). (g₁)–(g₅) The reconstruction results of SISC-SSI in different detection SNR when the speckle’s number is 5 for each frame. From left to right, the detection SNR is ∞, 20 dB, 15 dB, 10 dB, and 5 dB, respectively.