Neighborhood limited empirical mode decomposition (NLEMD) is one novel time-frequency analysis tool which has the adaptive features and meanwhile adopts neighborhood limited (max time-width) to overcome other EMD’s gray spots in images , and enhances images. This paper adopts NLEMD to decompose images ,and , at the same time , proposes a new multi-layered image compressing approach based on JPEG which is the most popular image compression standard . The experiment result shows that this approach can keep the quality of images , and compress each layer to a good ratio . So it is useful in multi-layered image compressing and transmission.
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兰国辉,王秀森,胡程鹏. 数字图像的NLEMD分层压缩研究[J]. 科学技术与工程, 2011, (26): . Lan Guo Hui,王秀森,胡程鹏. A New Multi–layered Digital Image Compressing Approach Based on NLEMD[J]. Science Technology and Engineering,2011,(26).