[2] [2] Bar L, Sochen N, Kiryati N, et al. Blind space-variant single-image restoration of defocus blur[C]//International Conference on Scale Space and Variational Methods in Computer Vision, 2017: 109-120.

[3] [3] Graham L, Yitzhaky Y. Blind restoration of space-variant Gaussian-like blurred images using regional PSFs[J]. Signal, Image and Video Processing, 2019, 13(4): 711-717.

[4] [4] ZHANG X, WANG R, JIANG X, et al. Spatially variant defocus blur map estimation and deblurring from a single image[J]. Journal of Visual Communication and Image Representation, 2016, 35: 257-264.

[5] [5] Cheong H, Chae E, Lee E, et al. Fast image restoration for spatially varying defocus blur of imaging sensor[J]. Sensors, 2015, 15(1): 880-898.

[6] [6] Kim S, Lee E, Hayes M H, et al. Multifocusing and depth estimation using a color shift model-based computational camera[J]. IEEE Transactions on Image Processing, 2012, 21(9): 4152-4166.