中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共10条，第1-10条 帮助

条数/页： 排序方式：
Filling Gaps of Monthly Terra/MODIS Daytime Land Surface Temperature Using Discrete Cosine Transform Method 期刊论文  OAI收割
REMOTE SENSING, 2020, 卷号: 12, 期号: 3, 页码: 16
作者:  Liu, Hengzi;  Lu, Ning;  Jiang, Hou;  Qin, Jun;  Yao, Ling
  |  收藏  |  浏览/下载：43/0  |  提交时间：2020/05/19
Filling Gaps of Monthly Terra/MODIS Daytime Land Surface Temperature Using Discrete Cosine Transform Method 期刊论文  OAI收割
REMOTE SENSING, 2020, 卷号: 12, 期号: 3, 页码: 16
作者:  Liu, Hengzi;  Lu, Ning;  Jiang, Hou;  Qin, Jun;  Yao, Ling
  |  收藏  |  浏览/下载：29/0  |  提交时间：2020/05/19
Evaluation of mountain slope stability considering the impact of geological interfaces using discrete fractures model 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2019, 卷号: 16, 期号: 9, 页码: 2184-2202
作者:  Wang Lu-yu;  Chen Wei-zhong;  Tan Xu-yan;  Tan Xian-jun;  Yuan Jing-qiang
  |  收藏  |  浏览/下载：24/0  |  提交时间：2020/04/08
Evaluation of mountain slope stability considering the impact of geological interfaces using discrete fractures model 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2019, 卷号: 16, 期号: 9, 页码: 2184-2202
作者:  Wang Lu-yu;  Chen Wei-zhong;  Tan Xu-yan;  Tan Xian-jun;  Yuan Jing-qiang
  |  收藏  |  浏览/下载：14/0  |  提交时间：2020/11/04
Modeling of inherent anisotropic behavior of partially saturated clayey rocks 期刊论文  OAI收割
COMPUTERS AND GEOTECHNICS, 2013, 卷号: 48, 页码: 29-40
作者:  Hu DW;  Zhou H;  Zhang F;  Shao JF;  Zhang JF(张均锋)
收藏  |  浏览/下载：61/0  |  提交时间：2013/03/25
Modeling of inherent anisotropic behavior of partially saturated clayey rocks 期刊论文  OAI收割
COMPUTERS AND GEOTECHNICS, 2013, 卷号: 48, 页码: 29-40
作者:  Hu, Dawei;  Zhou, Hui;  Zhang, Fan;  Shao, Jianfu;  Zhang, Junfeng
  |  收藏  |  浏览/下载：22/0  |  提交时间：2018/06/05
Improvement of urban land use and land cover classification approach in arid areas 会议论文  OAI收割
Proceedings of SPIE - The International Society for Optical Engineering, Image and Signal Processing for Remote Sensing XVI, Toulouse, France, 2010
Qian; Jing1; 2; Zhou; Qiming1; Chen; Xi2
收藏  |  浏览/下载：35/0  |  提交时间：2011/08/23
A new spaceborne compression approach for remote sensing imagery (EI CONFERENCE) 会议论文  OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Xu S.
收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25
After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ  a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently  CDF9/7 and MRLE together make hardware platform remain high real-time capability  and help reconstructed images keep good fidelity with PSNR being about 40dB  compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery  shows this "DWT+MRLE" method having better performance for remote-sensed imagery  especially those of higher resolution. Although inferior to 8:1  Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important  this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper  based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.  
Multiwavelet based multispectral image fusion for corona detection (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Wang X.;  Yang H.-J.;  Sui Y.-X.;  Yan F.
收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25
Image fusion refers to the integration of complementary information provided by various sensors such that the new images are more useful for human or machine perception. Multiwavelet transform has simultaneous orthogonality  symmetry  compact support  and vanishing moment  which are not possible with scalar wavelet transform. Multiwavelet analysis can offer more precise image analysis than wavelet multiresolution analysis. In this paper  a new image fusion algorithm based on discrete multiwavelet transform (DMWT) to fuse the dual-spectral images generated from the corona detection system is presented. The dual-spectrum detection system is used to detect the corona and indicate its exact location. The system combines a solar-blind UV ICCD with a visible camera  where the UV image is useful for detecting UV emission from corona and the visible image shows the position of the corona. The developed fusion algorithm is proposed considering the feature of the UV and visible images adequately. The source images are performed at the pixel level. First  a decomposition step is taken with the DMWT. After the decomposition step  a pyramid for each source image in each level can be obtained. Then  an optimized coefficient fusion rule consisting of activity level measurement  coefficient combining and consistency verification is used to acquire the fused coefficients. This process reduces the impulse noise of UV image. Finally  a new fused image is obtained by reconstructing the fused coefficients using inverse DMWT. This image fusion algorithm has been applied to process the multispectral UV/visible images. Experimental results show that the proposed method outperforms the discrete wavelet transform based approach.  
Variable separation approach for a differential-difference asymmetric Nizhnik-Novikov-Veselov equation 期刊论文  OAI收割
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 2004, 卷号: 59, 期号: 10, 页码: 645-658
作者:  Qian, XM;  Lou, SY;  Hu, XB
  |  收藏  |  浏览/下载：16/0  |  提交时间：2018/07/30