Spatially adaptive high-resolution image reconstruction of low-resolution DCT-based compressed images. Park, S. C., Kang, M. G., Segall, C. A., Katsaggelos, A. K. A., Sung Cheol, P., Moon Gi, K., Segall, C. A., Aggelos, K K., Sung Cheal, P., Moon Gi, K., Segall, C. A., Aggelos, K K., Sung Cheol Park, Moon Gi Kang, Segall, C. A., & Katsaggelos, A. K. A. In Proceedings. International Conference on Image Processing, volume 2, pages II—-II, 2002. IEEE, IEEE. Paper doi abstract bibtex The problem of recovering a high-resolution image from a sequence of low-resolution DCT-based compressed images is considered in this paper. The presence of the compression system complicates the recovery problem, as the operation reduces the amount of frequency aliasing in the low-resolution frames and introduces a non-linear quantization process. The effect of the quantization error and resulting inaccurate sub-pixel motion information is modeled as a zero-mean additive correlated Gaussian noise. A regularization functional is introduced not only to reflect the relative amount of registration error in each low-resolution image but also to determine the regularization parameter without any prior knowledge in the reconstruction procedure. The effectiveness of the proposed algorithm is demonstrated experimentally.
@inproceedings{SungCheolPark2002,
abstract = {The problem of recovering a high-resolution image from a sequence of low-resolution DCT-based compressed images is considered in this paper. The presence of the compression system complicates the recovery problem, as the operation reduces the amount of frequency aliasing in the low-resolution frames and introduces a non-linear quantization process. The effect of the quantization error and resulting inaccurate sub-pixel motion information is modeled as a zero-mean additive correlated Gaussian noise. A regularization functional is introduced not only to reflect the relative amount of registration error in each low-resolution image but also to determine the regularization parameter without any prior knowledge in the reconstruction procedure. The effectiveness of the proposed algorithm is demonstrated experimentally.},
author = {Park, Sung Cheol and Kang, Moon Gi and Segall, C.A. Andrew and Katsaggelos, Aggelos K. A.K. and {Sung Cheol}, Park and {Moon Gi}, Kang and Segall, C.A. Andrew and Aggelos, K Katsaggelos and {Sung Cheal}, Park and {Moon Gi}, Kang and Segall, C.A. Andrew and Aggelos, K Katsaggelos and {Sung Cheol Park} and {Moon Gi Kang} and Segall, C.A. Andrew and Katsaggelos, Aggelos K. A.K.},
booktitle = {Proceedings. International Conference on Image Processing},
doi = {10.1109/ICIP.2002.1040087},
isbn = {0-7803-7622-6},
issn = {10577149},
keywords = {DCT-based compression,High-resolution image reconstruction,Quantization noise,Regularization},
number = {4},
organization = {IEEE},
pages = {II----II},
pmid = {15376591},
publisher = {IEEE},
title = {{Spatially adaptive high-resolution image reconstruction of low-resolution DCT-based compressed images}},
url = {http://ieeexplore.ieee.org/document/1040087/},
volume = {2},
year = {2002}
}
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