Parallel Wavelet Schemes for Images
Abstract
In this paper, we introduce several new schemes for calculation of discrete wavelet transforms of images. These schemes reduce the number of steps and, as a consequence, allow to reduce the number of synchronizations on parallel architectures. As an additional useful property, the proposed schemes can reduce also the number of arithmetic operations. The schemes are primarily demonstrated on CDF 5/3 and CDF 9/7 wavelets employed in JPEG 2000 image compression standard. However, the presented method is general, and it can be applied on any wavelet transform. As a result, our scheme requires only two memory barriers for 2-D CDF 5/3 transform compared to four barriers in the original separable form or three barriers in the non-separable scheme recently published. Our reasoning is supported by exhaustive experiments on high-end graphics cards.
Cite
@article{arxiv.1605.00561,
title = {Parallel Wavelet Schemes for Images},
author = {David Barina and Michal Kula and Pavel Zemcik},
journal= {arXiv preprint arXiv:1605.00561},
year = {2019}
}
Comments
This is a preprint of the article that appeared in the Journal of Real-Time Image Processing. The final publication is available at Springer via http://doi.org/10.1007/s11554-016-0646-3