Wuhan University, Electronic Information School, Luojiashan, Wuhan 430072, China.
Opt Lett. 2013 Sep 1;38(17):3471-4. doi: 10.1364/OL.38.003471.
Based on incoherent optical synthetic aperture, a super-resolution reconstruction method is proposed with pixel-wise phase correlation superposition and sparse a priori constraints deconvolution. A "full spatial-frequency" image is synthesized from multiview low resolution images captured from successive exposures of a single focus plane array with shift-motion over a short range. Owing to a displacement matrix of 1/30th pixel accuracy and high-order differential L1 norm sparse regularization, the experimental results show that this approach achieves a state-of-the-art result with a resolution gain factor of about 3.0 times. It is demonstrated theoretically and experimentally to be a good and practical solution to improve spatial resolution beyond the resolving power limitation of conventional imaging systems and at low cost.
基于非相干光合成孔径，提出了一种超分辨率重建方法，采用逐像素相位相关叠加和稀疏先验约束反卷积。通过在短距离内对单个聚焦平面阵列进行多次曝光并进行平移运动，从多幅低分辨率图像中合成一幅“全空间频率”图像。由于位移矩阵的精度达到 1/30 像素，并且采用了高阶微分 L1 范数稀疏正则化，实验结果表明，该方法实现了最先进的结果，分辨率增益因子约为 3.0 倍。从理论和实验上证明，这是一种很好的实用解决方案，可以在低成本的情况下提高空间分辨率，突破传统成像系统的分辨率限制。
