| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4639824 | Journal of Computational and Applied Mathematics | 2011 | 9 Pages |
Abstract
In this paper, we give an analytical model of the compression error of down-sampled compression based on wavelet transform, which explains why down-sampling before compression can improve coding performance. And we approximate the missing details due to down-sampling and compression by using the linear combination of a set of basis vectors with L1L1 norm. Then we propose a down-sampled and high frequency information approximated coding scheme and apply it to natural images, and achieve gains of both subjective quality and objective quality compared with JPEG2000.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Jin Wang, Yunhui Shi, Dehui Kong, Wenpeng Ding, Chunjing Li, Baocai Yin,