共查询到17条相似文献,搜索用时 203 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
J. M. Torres Palenzuela L. González Vilas M. Sacau Cuadrado 《International journal of remote sensing》2013,34(10):1931-1950
Space‐borne synthetic aperture radar has been proven to be a useful tool for ocean oil spill monitoring due to its large coverage, independence of the day–night cycle and all‐weather capability. In this paper, a method for oil spill detection based on a visual interpretation was applied to two consecutive Advanced Synthetic Aperture Radar (ASAR) images acquired during the Prestige oil spill off the Spanish coast. The obtained oil spill information was integrated into a Geographical Information System (GIS) database in order to study the spatial distribution and the evolution of the slicks between both days, in addition to carrying out a comparison with field observations. The results show the great capability of monitoring and forecasting marine oil spills caused by large oil tanker accidents by means of the use of radar imagery jointly with other information, such as wind data or in situ observations. 相似文献
12.
在石油勘探、开发炼制及运储过程中,由于意外事故或操作失误,造成原油或油品从作业现场储器里外泄,溢流向地面、水面、海滩或海面,同时由于油质的不同,形成薄厚等一片膜这现象称为溢油.大范围的海上溢油往往会对数个国家的生态、社会以及经济带来严重影响.本文基于卫星遥感数据,将变化检测引入海上溢油的问题中,研究实现对比了多个变化检测算法,最终实现了一个变化检测的溢油检测系统.实验表明,变化检测能有效地减少因地理位置、光照条件因素的影响,泛化能力显著地强于单幅图的分类方法,文章提供的系统能有效地将油区与水面、轻油区域与重油区域分割. 相似文献
13.
14.
Song Shasha Zhao Yupeng Su Tengfei Ma Youjun An Wei Meng Junmin Zhao Chaofang 《遥感技术与应用》2013,28(5):928-933
SAR satellite remote sensing system of ocean oil spills has been developed for the operational surveillance in the offshore oil exploration areas of National Offshore Oil Corporation in China.The system is capable of SAR images processing,oil spill automatic detection using the algorithm of agglomeration hierarchy cluster and oil features extraction.The comprehensive analysis of oil detection results is also available including confidence analysis,multi-source and multi-phase data analysis as well as backtracking of oil spill sources.Oil thematic maps are output utilizing oil detection and comprehensive analysis results,which can be overlaid with electronic charts.The system can provide the technical backup and decision support for oil spill early warning and emergent measures implement. 相似文献
15.
B. Fiscella A. Giancaspro F. Nirchio P. Pavese P. Trivero 《International journal of remote sensing》2013,34(18):3561-3566
A probabilistic approach to distinguish oil spills from other similar oceanic features in marine Synthetic Aperture Radar (SAR) images has been developed and tested. The method uses statistical information obtained from previous mesurements of physical and geometrical characteristics for both oil spill and natural features. A sample image is evaluated using two different procedures to determine the probability that it is an oil spill, the results of the two procedures are then compared. The classification-algorithm performance was evaluated using a test dataset containing 80 examples that were oil spills and 43 that were natural features exhibiting characteristics similar to oil spills: more than 80% of the samples were classified correctly. The reliability of the method was then determined using a new dataset and similar results were obtained. 相似文献
16.
海上溢油图像的边缘检测技术是最重要的海上溢油监测技术之一。无论是溢油的识别、位置的确定或者溢油量的获取,都需要首先确定溢油区域的边界信息。针对溢油图像的特点,提出了一种新颖的边缘检测算法。该算法由3部分组成:“非极大值抑制”实现了溢油图像的候选边缘检测;动态分块阂值算法实现了对噪声、伪边缘的清除,使获得的边缘更连续;改进的GDNI边缘连接算法实现了对去噪后图像中的中断边缘点的准确连接。通过实验结果证明,提出的算法能够得到清晰连续的溢油遥感图像的边界信息,较好地实现了具有低对比度、模糊边界以及噪声问题的溢油遥感图像的边缘检测,且具有很好的实时性。根据本算法得到的边缘检测信息,海上溢油能够更加容易和快速地被识别。 相似文献
17.
海岸带是人口密集、资源丰富、开发程度较高,但生态环境又往往相对脆弱的地区。随着我国沿海地区经济高速发展,海岸带区域的环境状况发生了显著变化。这些变化信息依靠常规的调查手段难以及时获取,而卫星遥感技术则能够为监测海岸带及毗连海域资源环境变化提供有效手段。如何利用多源、多通道、多时相、主被动融合的星载遥感数据获取海岸带及毗连海域资源环境信息是我们亟需了解的问题。分别从海洋渔业资源调查、珊瑚礁及红树林等海岸生物资源的遥感、海洋水质监测、赤潮的监测与预警、溢油和海冰的监测等方面论述了遥感技术的特点与优势。并对遥感技术在海岸带资源环境管理中的应用做了展望。 相似文献