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Interannual variability of PDSI from tree-ring widths for the past 278 years in Baotou, China 期刊论文  OAI收割
TREES-STRUCTURE AND FUNCTION, 2017, 卷号: 31, 期号: 5, 页码: 1531-1541
作者:  
Song, Huiming;  Cai, Qiufang;  Li, Qiang;  Zhao, Boyang;  Liu, Han
  |  收藏  |  浏览/下载:37/0  |  提交时间:2018/10/15
Tree-ring-width-based PDSI reconstruction for central Inner Mongolia, China over the past 333 years 期刊论文  OAI收割
CLIMATE DYNAMICS, 2017, 卷号: 48, 期号: 3-4, 页码: 867-879
作者:  
Liu, Han;  Liu, Yu;  Zhang, Xinjia;  Song, Huiming;  Cai, Qiufang
  |  收藏  |  浏览/下载:25/0  |  提交时间:2018/10/18
Destriping method using lifting wavelet transform of remote sensing image (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:  
He B.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
Based on the characteristic of striping noise in remote sensing images  a new destriping noise technique for the improved multi-threshold method using lifting wavelet transform applied to remote sensing imagery is presented in this letter. Have used the lifting wavelet decomposition algorithm  the thresholds are determined by corresponding wavelet coefficients in every scale. Remote sensing imagery is so large that the algorithm must be fast and effective. The lifting wavelet transform is easily realized and inexpensive in computer time and storage space compared with the traditional wavelet transform. We also compare the method with some traditional destriping methods both by visual inspection and by appropriate indexes of quality of the denoised images. From the comparison we can see that the adaptive threshold method can preserve the spectral characteristic of the images while effectively remove striping noise and it did better than the existed ones. 2010 IEEE.