[1]杨旭艳,王旭红,胡婷,等.典型地物特征提取的适宜尺度选择[J].山地学报,2012,(05):607.
　YANG Xuyan,WANG Xuhong,HU Ting,et al.Appropriate Scale in Typical Objects Feature Extraction[J].Mountain Research,2012,(05):607.
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典型地物特征提取的适宜尺度选择()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年05期
页码:
607
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Appropriate Scale in Typical Objects Feature Extraction
作者:
杨旭艳;王旭红;胡婷;曹雅坤;
西北大学 城市与环境学院，陕西 西安710127
Author(s):
YANG Xuyan; WANG Xuhong; HU Ting; CAO Yakun
College of Urban and Environmental Science，Northwest University，Xi'an 710127，China
关键词:
分维数; 尺度转换; 尺度效应; 特征提取; 适宜尺度
Keywords:
Fractal Dimension; scale transformation; scale effect; feature extraction; appropriate scale
分类号:
P237
文献标志码:
A
摘要:
遥感图像的尺度与图像所表达的信息有着密切的关系,但是在使用遥感图像进行研究和应用的过程中,使用尺度和图像尺度之间存在一定的矛盾,现有尺度的遥感图像不一定能满足应用的要求。为了解决使用尺度与图像现有尺度之间的矛盾,采用基于分维数的尺度转换方法得到以原始图像为基础的大于或小于原尺度的图像,在形成的连续变化的系列图像上提取两种典型地物样本,分别用地物单元周长(P)、面积(S)、面状地物形状系数(F)、斑块分维数(D)这4个表征地物形态特征的因子在各尺度图像上进行对比分析,发现随着遥感图像栅格尺寸的增大,典型地物样本灰度值的灰阶不断减少,形状复杂度不断降低,地物边界钝化,内部纹理结构简单化、粗糙化。综...
Abstract:
The scale of remote sensing image and the expression of the image information have a close relationship，However，in the process of using remote sensing images for research and application，using scales and image scales have a certain contradiction，the existing scale of remote sensing image may not be able to meet the application requirements. In order to solve the contradiction between using scales and image scales ，this paper use fractal dimension of the scaling method to get greater than or less than original scale of image from original image，we selected two samples of typical object from the formation of a continuous changes series，using the perimeter of typical objects，area of features unit ，shape coefficients and the fractal dimension of plaques to calculate and contrastive analysis in the images of different scales，we can find that as grid size increases，the typical object in the gray value of grayscale sample declines continuously，shape complexity reduce constantly，objects’ boundary is faint，the internal grain structure become simplistic and roughening. Taking these phenomena into consideration，the article puts forward integrated shape index to calculate the appropriate scale to express the typical objects’ shape features，through the experiment get the results that in the scale of 30m image is the appropriate scale to express the shape of water sample 1，resident sample 1 and resident sample 2 ，in the scale of 90 m image is the appropriate scale to express the shape of water sample 2;through the integrated shape index of typical objects have successfully calculated the appropriate scale to express shape of typical objects，laid a foundation for expressing appropriate scale of complicated objects，and this method is simple to use，have a certain practical value.

相似文献/References:

[1]王威,田杰,马东辉,等.基于分形维数权重的泥石流危险度评价[J].山地学报,2011,(06):747.
　WANG Wei,TIAN Jie,et al.Evaluation of Dangerous Degree of Debris Flow Basedon Fractal Dimension Weight[J].Mountain Research,2011,(05):747.
[2]王协康,方铎.流域地貌系统定量研究的新指标[J].山地学报,1998,(01):8.

备注/Memo

备注/Memo:
收稿日期(Received date)：2011-10-12；改回日期(Accepted) : 2012-06-19。
基金项目（Foundation item）：国家自然科学
基金项目（41071271）不同地貌类型区的遥感影像信息容量的差异性研究。\[Research on otherness of remote sensing image Information Capacity in Different landform regions.\]
作者简介（Biography）：杨旭艳（1987-），女，汉，陕西铜川人，在读硕士研究生，主要从事地理信息系统、遥感数据处理等研究。\[Yang Xuyan(1987-), female, come form Tongchuan, master graduate student, mostly engage GIS and RS data processing study. \] Tel：15319991090，E-mail:yangxuyan22@sohu.com王旭红（1968-），女，汉，教师，副教授，工学博士，从事遥感数据处理与应用、地理信息系统等方面的研究。\[Wang Xuhong（1968-），Teacher, Dr.master graduate student, mostly engage GIS and RS data processing study.\]E-mail:Jqy_wxh@163.com
更新日期/Last Update: 1900-01-01