摘要
We establish an improved GP iterative algorithm for the extrapolation of band-limited function to fully 3-dimensional image reconstruction by the convolution-backprojection algorithm. Numerical experiments demonstrate that the image resolving power of IGP algorithm is better than that of the original GP algorithm for noisy data.
基金
G.R. Qu is partially supported by the National Natural Science Foundation of China (No. 60372015, 60772041)
the Science Foundation of Beijing Jiaotong University (2002SM54)
M. Jiang is partially supported by the National Key Basic Research Special Foundation of China (2003CB716101)
National Science Foundation of China (60325101, 60272018, 60628102)
Ministry of Education (306017), Engineering Research Institute of Peking University, and Microsoft Research Asia.
