@inproceedings{7a147e4a2cc144acbe97fcbaa7cab3e3,
title = "A Fast Algorithm for High-Resolution Color Image Reconstruction with Multisensors",
abstract = "This paper studies the application of preconditioned conjugate gradient methods in high-resolution color image reconstruction problems. The high-resolution color images are reconstructed from multiple undersampled, shifted, degraded color frames with subpixel displacements. The resulting degradation matrices are spatially variant. To capture the changes of reflectivity across color channels, the weighted H1 regularization functional is used in the Tikhonov regularization. The Neumann boundary condition is also employed to reduce the boundary artifacts. The preconditioners are derived by taking the cosine transform approximation of the degradation matrices. Numerical examples are given to illustrate the fast convergence of the preconditioned conjugate gradient method.",
author = "Ng, {Michael K.} and Kwan, {Wilson C.} and Chan, {Raymond H.}",
year = "2001",
doi = "10.1007/3-540-45262-1_73",
language = "English",
isbn = "9783540418146",
series = "Lecture Notes in Computer Science",
publisher = "Springer Berlin Heidelberg",
pages = "615--627",
editor = "Lubin Vulkov and Jerzy Wa{\'s}niewski and Plamen Yalamov",
booktitle = "Numerical Analysis and Its Applications",
note = "2nd International Conference on Numerical Analysis and Its Applications, NAA 2000 ; Conference date: 11-06-2000 Through 15-06-2000",
}