Sub-Rayleigh imaging via undersampling scanning based on sparsity constraints

Xue Chang-Bin^{1, 2}, Yao Xu-Ri^{2, †}, Li Long-Zhen², Liu Xue-Feng², Yu Wen-Kai¹, Guo Xiao-Yong^{2, ‡}, Zhai Guang-Jie², Zhao Qing¹

(color online) (a) Image of the object obtained by a resolved imaging system. (b) The reconstructed image by scanning. (c) The diffractionlimited image of a pixel. (d) Cross section through the center of panel (c).