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
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
长春光学精密机械与物... [2]
地理科学与资源研究所 [1]
成都山地灾害与环境研... [1]
武汉物理与数学研究所 [1]
中国科学院大学 [1]
采集方式
OAI收割 [5]
iSwitch采集 [1]
内容类型
期刊论文 [3]
会议论文 [2]
SCI/SSCI论文 [1]
发表日期
2020 [1]
2016 [1]
2014 [1]
2012 [1]
2010 [1]
2006 [1]
更多
学科主题
筛选
浏览/检索结果:
共6条,第1-6条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
题名升序
题名降序
提交时间升序
提交时间降序
作者升序
作者降序
发表日期升序
发表日期降序
A Hybrid Data Balancing Method for Classification of Imbalanced Training Data within Google Earth Engine: Case Studies from Mountainous Regions
期刊论文
OAI收割
REMOTE SENSING, 2020, 卷号: 12, 期号: 20, 页码: 3301
作者:
Naboureh, Amin
;
Li, Ainong
;
Bian, Jinhu
;
Lei, Guangbin
;
Amani, Meisam
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2020/12/10
class imbalance problem
Google Earth Engine
land cover mapping
mountainous regions
time-series of Landsat
Cut-slope icing prevention: case study of the seasonal frozen area of western china
期刊论文
iSwitch采集
Journal of cold regions engineering, 2016, 卷号: 30, 期号: 3, 页码: 10
作者:
Yu, Wenbing
;
Han, Fenglei
;
Yi, Xin
;
Liu, Weibo
;
Hu, Da
收藏
  |  
浏览/下载:44/0
  |  
提交时间:2019/05/09
Cold regions
Cut slope
Icing problem
Prevention technique
Roadway
Problem regions and regional problems of socioeconomic development in China: A perspective from the coordinated development of industrialization, informatization, urbanization and agricultural modernization
SCI/SSCI论文
OAI收割
2014
作者:
Wang J.
;
Wang J.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2014/12/24
problem regions
regional problems
regional policies
industrialization
informatization
urbanization
agricultural
modernization
inequality
province
The Riemann problem for a class of nonlinear degenerate equations
期刊论文
OAI收割
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 2012, 卷号: 394, 期号: 1, 页码: 112-120
作者:
Wang, Zhen
;
Zhang, Tingting
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2015/06/25
Riemann problem
Invariant regions
Liu-entropy condition
Rarefaction waves
Shock waves
Adaptive resolution storage system based on LOG-POLAR transform for multi-target trackers (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer Application and System Modeling, ICCASM 2010, October 22, 2010 - October 24, 2010, Shanxi, Taiyuan, China
作者:
Zhang Y.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
The main constrained problem of the video monitoring and storage system is the contradiction between large field of view and storage space limitations. Not all of the video information introduced by the image sensors need to be recorded especially for some tracking system which has appointed functions to track specifically kinds of targets. For instance
the system not only works for single target
if the monitor is appointed for human face tracking
but also can work for multi-targets. High reconstruction resolution in the fovea region enables the successive application of recognition modules without sacrificing their performance
the best system appears to be concentrating on human face only and all the others considered being background
the low reconstruction resolution in the periphery helps to reduce the video data. 2010 IEEE.
the background regions needn't to be recorded in detail. For this purpose
this letter presents a real-time foveate storage system
which efficiently represents the video image in log-polar coordinates
with the foveate point centered on the target
A new segmentation method of CR images based on discrete wavelet transform and mathematics morphology (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Li Z.
;
Li Z.
收藏
  |  
浏览/下载:68/0
  |  
提交时间:2013/03/25
In this paper
we propose a segmentation method of CR(computed radiography) images with being rid of under-segmentation and over-segmentation. An under-segmentation occurs when pixels belonging to different objects are grouped into a single region. Such errors are the most dangerous because they can invalidate the whole segmentation process. The phenomenon always takes place when we segment CR images because of the principle of CR. In order to depressed under-segmentation
we enhance the CR images using DWT (discrete wavelet transform) to get more detail of CR image features. As we enhance the CR image
the over-segmentation maybe occurs. Compared with under-segmentation
the over-segmentation occurs when a single objects is subdivided by segmentation into several region. For the purpose of preventing from the over-segmentation
we present a scheme for enhanced CR images based on watershed algorithm that solves over-segmentation problem. We use marker-based watershed algorithm. Together with gradient image and marker image
watershed segmentation can make sure to partition CR image into meaningful object and avoid further segmentation of homogeneous regions. The result of the proposed algorithm are compared with those of other standard methods. Experiments have shown a better result and indeed solved under-segmentation and over-segmentation problems.