2010 International Conference on Multimedia Technology最新文献_第2页

Temporal and Spatial Characteristics of Dry and Wet Conditions in Shiyang River Basin during the Period of 1960-2009 1960-2009年石羊河流域干湿条件时空特征

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5631420

Jun-ju Zhou, Peiji Shi

{"title":"Temporal and Spatial Characteristics of Dry and Wet Conditions in Shiyang River Basin during the Period of 1960-2009","authors":"Jun-ju Zhou, Peiji Shi","doi":"10.1109/ICMULT.2010.5631420","DOIUrl":"https://doi.org/10.1109/ICMULT.2010.5631420","url":null,"abstract":"Based on the climatic data of four meteorological stations from 1960 to 2009,using FAO Penman-Monteith model, ArcGIS IDW interpolation and Mann-Kendall test and T-test, the paper analyzes the changing trends,spatial and temporal differences and mutation characteristics of surface dry and wet conditions.The results show: Firstly, the overall trend of surface dry and wet conditions had been becoming wetter and wetter with the trend rate of humid index 0.006/10yr during the period of 1960-2009 in Shiyang River Basin.The surface was drier in the period of 1960s-1970s,and then became wetter after 1980s,especially after 2000.Secondly,the spatial differences of surface dry and wet conditions are significant.The mean annual humid index decreased from 0.404 of the upper reaches to 0.081 of the lower reaches gradually and the changing rates also changed from fast to slow. Furthermore, the lower reaches appeared the most dramatic fluctuation, followed by the upper reaches and the slightest fluctuation in the middle of river.Thirdly,the seasonal variations of surface dry/wet conditions were very different.The mean annual humid index was the largest in summer,followed by the autumn and the less in winter and spring.The overall changing trends of four seasons were all increasing,but the wetting trend was more significant in autumn and winter than that in spring and summer.Correlation analysis shows the correlation coefficients between summer, autumn,winter,spring and the mean annual were 0.665,0.591,0.397 and 0.334 respectively,which were all accepted for the 1% significance level,indicating the humid index increasing in the four seasons,especially for the two fomers, made greater contribution to the annual humid index changing.Finally,the mutation threshold of annual humid index occurred in the year around 1983,while the mutation years for the winter,spring and autunm were 1984,1981 and 1999 respectively and the unconspicuous mutation in summer.","PeriodicalId":412601,"journal":{"name":"2010 International Conference on Multimedia Technology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122759900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative Analysis of Error in Extracting Slope Length from Grid-Based Digital Elevation Model 基于网格的数字高程模型提取坡长误差的定量分析

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5631025

Bei Jin, Xue-jun Liu, Jia-pei Hu, Yang Yang

引用次数: 0

Content-Based Image Retrieval Based on Integrating Region Segmentation and Relevance Feedback 基于区域分割和相关反馈相结合的基于内容的图像检索

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5630973

Dewen Zhuang, Shoujue Wang

{"title":"Content-Based Image Retrieval Based on Integrating Region Segmentation and Relevance Feedback","authors":"Dewen Zhuang, Shoujue Wang","doi":"10.1109/ICMULT.2010.5630973","DOIUrl":"https://doi.org/10.1109/ICMULT.2010.5630973","url":null,"abstract":"In the research of content-based image retrieval, visual signature based on region was attracted more attention. To get the signature based on region, the crucial step is image segmentation, and reliable image segmentation is also critical to get the image shape description. Unfortunately, it has been demonstrated that accurate image segmentation is still an open problem. So some strategies for dealing with this problem is to reduce dependence on accurate image segmentation for a practical image retrieval system. Due to the semantic gap, there are still many shortcomings for image retrieval system only with the low level visual features. It is desirable for the relevance feedback based on the user participation in image retrieval system. Through the user's feedback, the corresponding high-level semantic will be obtained based on machine learning theory. Based on ``things cognition'' instead of ``things partition'', the high dimension biomimetic information geometry theory have made good results in many research fields. Based on this theory, to ``cognition'' the whole image characteristic through image segmented into main region and margin region, a prototype image retrieval system was made using the extracted features of color and texture. Combined the retrieval results with relevance feedback technology, image feature dimensional reduction was made using the linear discriminant analysis. It reduces semantic gap and the storage of image signatures, as well as improves the retrieval efficiency and performance. Experimental results on a subset of the COREL database showed the effectiveness of our proposed method.","PeriodicalId":412601,"journal":{"name":"2010 International Conference on Multimedia Technology","volume":"493 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114175140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Research on the Method of Airborne SAR Direct Geocoding Based on Correction of Systematic Error 基于系统误差校正的机载SAR直接地理编码方法研究

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5629667

Zhan Song, Jixian Zhang, Guoman Huang, Zheng Zhao, Jujie Wei

引用次数: 1

UTMC Communication over WiMAX Network 基于WiMAX网络的UTMC通信

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5630362

Pengjun Zheng, R. McDonald, Mike McDonad

引用次数: 0

Tetrahedral Mesh Generation Based on Contours 基于轮廓的四面体网格生成

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5631003

Sulei Tian, Zhiyi Zhang, Xian Zhang, Min Chen

引用次数: 0

A Study of Suppressing Strong Clutter in Radar Signal Based ICA 基于ICA的雷达信号强杂波抑制研究

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5631096

Sijia Chen, Jianguo Wang

引用次数: 1

The Research of Emergency Evacuation Model Based on Digital City Management Platform 基于数字城市管理平台的应急疏散模型研究

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5630898

Haibo Wang, Hong Fan

引用次数: 1

An Adaptive Robust Digital Image Watermark Based on the Discrete Operation 基于离散运算的自适应鲁棒数字图像水印

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5629635

Yaxun Zhou, Wei Jin

引用次数: 0

Design of a 50° Field-of-View Object for Head-Mounted Projective Displays and Investigation of Retro-Reflective Materials 头戴式投影显示器50°视场对象的设计及反反射材料的研究

2010 International Conference on Multimedia Technology Pub Date : 2010-11-11 DOI: 10.1109/ICMULT.2010.5630628

Chang-jiang Fan, Y. Qian

引用次数: 0