Matrix Structures and Parallel Algorithms for Image Superresolution Reconstruction
نویسندگان
چکیده
منابع مشابه
Matrix Structures and Parallel Algorithms for Image Superresolution Reconstruction
Computational resolution enhancement (superresolution) is generally regarded asa memory intensive process due to the large matrix-vector calculations involved. In this paper,a detailed study of the structure of the n2 × n2 superresolution matrix is used to decompose thematrix into 9 matrices of size l2 × l2 where l is the upsampling factor. As a result, previously largemartix ve...
متن کاملSuperresolution Image Reconstruction Using Fast Inpainting Algorithms
The main aim of this paper is to employ the total variation (TV) inpainting model to superresolution imaging problems. We focus on the problem of reconstructing a highresolution image from several decimated, blurred and noisy low-resolution versions of the high-resolution image. We propose a general framework for multiple shifted and multiple blurred low-resolution image frames which subsumes s...
متن کاملFast bilinear algorithms of image compression and reconstruction with superresolution
A wide class of fast image compression algorithms are elaborated in this paper. Proposed technique di er from the known spectral algorithms so that it truncates generalized cepstrum rather than spectrum together with additional information on spectrum phase for increasing of compression rate.
متن کاملA computationally efficient superresolution image reconstruction algorithm
Superresolution reconstruction produces a high-resolution image from a set of low-resolution images. Previous iterative methods for superresolution had not adequately addressed the computational and numerical issues for this ill-conditioned and typically underdetermined large scale problem. We propose efficient block circulant preconditioners for solving the Tikhonov-regularized superresolution...
متن کاملDevelopment and Evaluation of Image Reconstruction Algorithms for a Novel Desktop SPECT System
Objective (s): Various iterative reconstruction algorithms in nuclear medicine have been introduced in the last three decades. For each new imaging system, it is wise to select appropriate image reconstruction algorithms and evaluate their performance. In this study, three approaches of image reconstruction were developed for a novel desktop open-gantry SPECT system, PERSPECT, to assess their p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: SIAM Journal on Matrix Analysis and Applications
سال: 2010
ISSN: 0895-4798,1095-7162
DOI: 10.1137/090759045