中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Potential mineral resources in the planets and preliminary discussion on planetary resource geology 期刊论文  OAI收割
ACTA PETROLOGICA SINICA, 2021, 卷号: 37, 期号: 8, 页码: 2276-2286
作者:  
Qin KeZhang;  Zou XinYu
  |  收藏  |  浏览/下载:56/0  |  提交时间:2022/07/05
Heavy metals pollution and health risk assessment in farmed scallops: Low level of Cd in coastal water could lead to high risk of seafood 期刊论文  OAI收割
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2021, 卷号: 208, 页码: 10
作者:  
Lin, Yichen;  Lu, Jian;  Wu, Jun
  |  收藏  |  浏览/下载:46/0  |  提交时间:2021/06/07
陕北黄土丘陵成年枣树根系空间分布规律研究 期刊论文  OAI收割
中国农村水利水电, 2012, 期号: 10, 页码: 4-8,12
卢俊寰; 汪有科; 梁宇; 蔺君; 肖森; 刘守阳
收藏  |  浏览/下载:52/0  |  提交时间:2014/07/10
Study of removing striping noise in CCD image (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu H.;  Liu H.;  Liu H.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
Striping noise is the common system noise during formation of image using linear array CCD and has the character of periodicity  directivity and banding distributing. It can be caused by errors in internal calibration devices  or by slight gain/offset differences among the elements that conform the array of detectors. Striping noise covers up useful information in CCD image and brings adverse effect to image interpretation. On the basis of analyzing wavelet decomposed coefficient  the regularities of distribution about striping noise in wavelet coefficient is found  thereby the method of wavelet threshold selection which is suitable to striping noise distribution is put forward. According to Donoho's method about denoising using wavelet  the image including striping noise is processed. Comparing the power spectrum of processed image with the one of original image polluted by striping noise in frequency field  we find pulse brought by striping noise is removed and the goal which reserves image details and reduces stripes is achieved.