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CORC

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A hybrid vector-raster approach to drainage network construction in agricultural watersheds with rice terraces and ponds 期刊论文
JOURNAL OF HYDROLOGY, 2021, 卷号: 601, 页码: 8
作者:  Liu, Junzhi;  Liu, Zhangcong;  Yin, Yueqiang;  Croke, Barry F. W.;  Chen, Min
收藏  |  浏览/下载：52/0  |  提交时间：2021/11/05
A New Gabor Filter-Based Method for Automatic Recognition of Hatched Residential Areas 期刊论文
IEEE ACCESS, 2019, 卷号: 7
作者:  Wu, Jianhua;  Wei, Pengjie;  Yuan, Xiaofang;  Shu, Zhigang;  Chiang, Yao-Yi
收藏  |  浏览/下载：10/0  |  提交时间：2019/12/05
A new approach to simplifying polygonal and linear features using superpixel segmentation 期刊论文
INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE, 2018, 卷号: 32, 期号: 10
作者:  Shen, Yilang;  Ai, Tinghua;  Wang, Lu;  Zhou, Jing
收藏  |  浏览/下载：9/0  |  提交时间：2019/12/05
Research on Display and Storage of Raster Data Based on Android Platform 会议论文
5th International Workshop on Earth Observation and Remote Sensing Applications (EORSA), Xian, PEOPLES R CHINA, JUN 18-20, 2018
作者:  Li, Chengjie*;  Zang, Zhuo;  Lin, Hui;  Li, Heng
收藏  |  浏览/下载：14/0  |  提交时间：2019/12/28
A Comparative Analysis to the Array Database Technology and Its Use in Flexible VCI Derivation 会议论文
作者:  Tan, Zhenyu;  Yue, Peng
收藏  |  浏览/下载：4/0  |  提交时间：2019/12/05
The Research of real time auto-recognition of the moire fringe (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.; Wu Z.-G.
收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25
Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity  high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black  the angle of the stripes is uniform  the width of the stripes is uniform  the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE)  the closer a series of data is  the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin  180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those  then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe  60 equal angles are divided in the neighborhood of the angle  then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe  we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn  and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise  an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe  and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest  the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method  the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method  and it can achieve with 15 ms  that satisfying the demand of real time. 2011 SPIE.  
ArcGis9.0中基于DEM的水文信息提取方法 期刊论文
2010, 2010
张超; 郑钧; 张尚弘; 王兴奎; ZHANG Chao; ZHENG Jun; ZHANG Shang-hong; WANG Xing-kui
收藏  |  浏览/下载：2/0
基于对象关系数据库的矢栅一体化查询与操作研究 期刊论文
地理与地理信息科学, 2009
尹双石; 刘洋; 方裕; 陈斌; 田晓婷; 刘泽洋
收藏  |  浏览/下载：2/0  |  提交时间：2015/10/23
The Raster Data Management in a Spatial Data Grid 其他
2009-01-01
Wu, Pengfei; Fang, Yu; Chen, Bin; Zhao, Yong; Yan, Menglong
收藏  |  浏览/下载：1/0  |  提交时间：2015/11/13
GSQL-R: A query language supporting raster data 其他
2004-01-01
Liu, Y; Wang, YH; Zhang, Y; Lin, X; Qin, S
收藏  |  浏览/下载：2/0  |  提交时间：2015/11/13

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