机构

• 数学与系统科学研究院 [6]
• 长春光学精密机械与物... [4]
• 西安光学精密机械研究... [3]
• 中国科学院大学 [2]
• 地理科学与资源研究所 [1]
• 遥感与数字地球研究所 [1]
• 更多

采集方式

• OAI收割 [19]
• iSwitch采集 [2]

内容类型

• 期刊论文 [15]
• 会议论文 [6]

发表日期

• 2023 [1]
• 2019 [2]
• 2017 [1]
• 2014 [1]
• 2013 [2]
• 2011 [1]
• 更多

学科主题

• 电子、电信技术::信... [1]
• 电子、电信技术::计... [1]

筛选

浏览/检索结果: 共21条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Temporal and Spatial Changes of Hydrographic Connectivity with the Development of Agriculture, Industry, and Urban Areas: A Case Study of the Yellow River Basin in Henan Province during the Last Two Decades 期刊论文  OAI收割 WATER, 2023, 卷号: 15, 期号: 24, 页码: 4245 作者:  Li, Zhiying;  Wei, Chaoyang;  Zhou, Jianli;  Yang, Fen   |  收藏  |  浏览/下载：24/0  |  提交时间：2024/01/26 Henan section of the Yellow River Basin  modified normalized difference water index  hydrographic connectivity  Set Pair Analysis   Local difference-based active contour model for medical image segmentation and bias correction 期刊论文  OAI收割 IET Image Processing, 2019, 卷号: 13, 期号: 10, 页码: 1755-1762 作者:  Niu, Yuefeng;  Cao, Jianzhong   |  收藏  |  浏览/下载：74/0  |  提交时间：2019/09/25 image segmentation  medical image processing  two-phase model  medical images  LBDE model  precise segmentation results  comparative models  local difference-based active contour model  medical image segmentation  bias correction  local bias field  difference estimation model  smooth orthogonal basis functions  clustering criterion function  measured image  local region  accurate segmentation results  level set evolution process   Local difference-based active contour model for medical image segmentation and bias correction 期刊论文  OAI收割 IET IMAGE PROCESSING, 2019, 卷号: 13, 期号: 10, 页码: 1755-1762 作者:  Niu, Yuefeng;  Cao, Jianzhong   |  收藏  |  浏览/下载：29/0  |  提交时间：2020/06/05 image segmentation  medical image processing  two-phase model  medical images  LBDE model  precise segmentation results  comparative models  local difference-based active contour model  medical image segmentation  bias correction  local bias field  difference estimation model  smooth orthogonal basis functions  clustering criterion function  measured image  local region  accurate segmentation results  level set evolution process   An Adaptive Semi-Lagrangian Level-Set Method for Convection-Diffusion Equations on Evolving Interfaces 期刊论文  OAI收割 ADVANCES IN APPLIED MATHEMATICS AND MECHANICS, 2017, 卷号: 9, 期号: 6, 页码: 1364-1382 作者:  Shi, Weidong;  Xu, Jianjun;  Shu, Shi   |  收藏  |  浏览/下载：34/0  |  提交时间：2018/03/05 Convection-diffusion equation  semi-Lagrangian method  level-set method  blockstructured adaptive mesh  finite difference method   A Nonlinear Adaptive Level Set for Image Segmentation 期刊论文  OAI收割 ieee transactions on cybernetics, 2014, 卷号: 44, 期号: 3, 页码: 418-428 作者:  Wang, Bin;  Gao, Xinbo;  Tao, Dacheng;  Li, Xuelong 收藏  |  浏览/下载：37/0  |  提交时间：2015/03/18 Active contour  Bayesian criterion  finite difference  image segmentation  level set  partial differential equation   Region-based image segmentation with local signed difference energy 期刊论文  OAI收割 PATTERN RECOGNITION LETTERS, 2013, 卷号: 34, 期号: 6, 页码: 637-645 作者:  Wang, Lingfeng;  Wu, Huaiyu;  Pan, Chunhong 收藏  |  浏览/下载：36/0  |  提交时间：2015/08/12 Image segmentation  Level set  Local signed difference  Local separability  Global consistency   A Local Image Enhancement Method Based on Adjacent Pixel Gray Order-preserving Principle 会议论文  OAI收割 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013 作者:  Fan XP(范晓鹏);  Cai TF(蔡铁峰);  Zhu F(朱枫) 收藏  |  浏览/下载：46/0  |  提交时间：2013/12/26 The paper is committed in local image enhancement. At first, the authors propose an adjacent pixel gray order-preserving principle. Adjacent pixel gray order-preserving principle is the basement of local enhancement method which ensures that there is no distortion in processed image. And then, the authors propose an iterative algorithm, which could stretch gray-scale difference of adjacent pixels in premise of not changing gray magnitude relationship between adjacent pixels. At last, the authors propose a totally reference image quality assessment method based on adjacent pixel gray order-preserving principle. According to this quality assessment method, the authors made a set of comparative experiments with local histogram equalization and method. Experimental results show that the proposed enhancement method can get higher score and provide better visual effects, fully demonstrating its effectiveness. According to this quality assessment method, the proposed method shows a good effectiveness, through experimental results and comparison with local histogram equalization method.   A Relay Level Set Method for Automatic Image Segmentation 期刊论文  OAI收割 ieee transactions on systems man and cybernetics part b-cybernetics, 2011, 卷号: 41, 期号: 2, 页码: 518-525 作者:  Gao, Xinbo;  Wang, Bin;  Tao, Dacheng;  Li, Xuelong 收藏  |  浏览/下载：219/70  |  提交时间：2011/01/12 Energy minimization  finite difference  geometric active contour  image segmentation  partial differential equation (PDE)  relay level set   Thermal difference analysis and athermalization design of infrared optical system (EI CONFERENCE) 会议论文  OAI收割 Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：38/0  |  提交时间：2013/03/25 When infrared optical system works in a large temperature range  the thermal effect of optical lens and optical tube will produce image plane shift and lead to imaging quality deterioration. In order to eliminate the thermal aberration  the athermalization design principles of infrared optical system were introduced  and some commonly used methods of thermal difference compensation were described. Proceeding from single lens  the thermal difference caused by temperature changing was analyzed  and the relationship between temperature and focus shift was obtained. Considering optical tube thermal expansion  a set of equations to estimate the thermal difference of lens group was given. Finally  an infrared optical imaging system that can work under the temperature range of -40C to 60C was design according to athermal technique  in which a new mechanical passive temperature compensation was proposed. Through simulation  the athermalization design could make imaging plane shift the smallest. The simulation results coincided with the theoretical formula  and the design had reference value in engineering. 2010 Copyright SPIE - The International Society for Optical Engineering.   A criterion for testing whether a difference ideal is prime 期刊论文  OAI收割 JOURNAL OF SYSTEMS SCIENCE & COMPLEXITY, 2009, 卷号: 22, 期号: 4, 页码: 627-635 作者:  Yuan, Chunming;  Gao, Xiao-Shan   |  收藏  |  浏览/下载：20/0  |  提交时间：2018/07/30 Characteristic set  difference prime ideal  irreducibility  strong irreducibility