不同分辨率遥感影像的钢铁厂识别适宜性研究
作者简介:陈鹏飞(1982-),男,汉族,河南许昌人,博士,助理研究员,主要从事遥感应用研究。E-mail: pengfeichen@igsnrr.ac.cn
收稿日期: 2014-10-13
要求修回日期: 2015-01-09
网络出版日期: 2015-09-07
基金资助
环境保护部财政预算项目(1441402450017-3);国家自然科学基金项目(41301378);广东省中国科学院全面战略合作专项(2013B091500075)
Research on the Suitability of Image at Different Resolutions for the Identification of Steel Enterprise Using Remote Sensing
Received date: 2014-10-13
Request revised date: 2015-01-09
Online published: 2015-09-07
Copyright
钢铁行业是主要污染源之一。钢铁企业违法建设行为时有发生,给生态环境带来巨大压力。为提高环境监察部门执法能力,保障生态环境安全,开展基于遥感技术的钢铁企业违法建设核查研究具有重要意义。本研究以石家庄地区为例,分析将遥感技术应用于核查钢铁企业违法建设行为的可行性,并提出不同核查任务的最低影像分辨率需求。首先,选择不同规模代表性钢铁企业,开展遥感特征解译分析,建立解译知识库;其次,研究不同规模钢铁企业遥感解译标志在不同分辨率遥感影像下的可识别性;最后,根据不同核查任务,提出各任务对影像分辨率的需求。结果表明:(1)高炉、煤气柜、电除尘器、储料区是钢铁厂遥感识别的重要特征;(2)对于批小建大行为、正在建设的未批先建行为的遥感核查,最低影像分辨率需求为:大型企业2 m全色影像,中型企业1 m全色影像,小型企业0.5 m全色影像;(3)对于在敏感区已建成未批先建行为的遥感核查,最低影像分辨率需求为:大型钢铁企业2 m全色影像,中型企业2 m全色影像配合5 m多光谱影像,小型企业0.5 m全色影像配合5 m多光谱影像;(4)对于非敏感区已建成未批先建行为的遥感核查,最低影像分辨率需求为5 m多光谱影像。
陈鹏飞 , 卢力 , 朱华忠 , 诸云强 , 王琰 . 不同分辨率遥感影像的钢铁厂识别适宜性研究[J]. 地球信息科学学报, 2015 , 17(9) : 1119 -1127 . DOI: 10.3724/SP.J.1047.2015.01119
Steel industry is one of the dominant sources of pollution. Illegally constructed steel enterprises have been emerging for a long period. It brings enormous pressure to the ecological environment. Using remote sensing technology to monitor the violate behavior, is very helpful to enhance the capability of environmental monitoring department and strengthen environment security. Taking Shijiazhuang city as a research area, this study analyzed the feasibility of steel company inspection based on remote sensing technology, and presented the minimum requirements of image geometric resolution for different assignments. For this purpose, firstly, the representative steel enterprises of different sizes were selected. The identification characteristics of these steel companies were analyzed using remote sensing techniques and were used to format the interpretation knowledge base. Secondly, the feasibilities of identifying recognition features for different sized enterprises were analyzed, with remote sensing images at different geometric resolutions. Finally, the minimum requirements of image geometric resolution for different detection assignments were suggested according to their features. The results are indicated as follows: (1) the blast furnace, gas tank, electricity dust removal facility and material storage field were the primary recognition features of steel enterprises using remote sensing. (2) To identify the illegal extensions and constructions built without permission, the minimum requirements of image geometric resolution are 2 m panchromatic image for large-size company, 1 m panchromatic image for medium-size company and 0.5 m panchromatic image for small-size company. (3) To identify the constructions built without permission in sensitive area, the minimum requirements of image geometric resolution are 2 m panchromatic image for large-size company, 2 m panchromatic image plus 5 m multispectral image for medium-size company, and 0.5 m panchromatic image plus 5 m multispectral image for small-size company. (4) To identify the constructions built without permission in non-sensitive area, the minimum requirement of image geometric resolution is 5 m multispectral image for companies of all sizes.
Tab. 1 Representative steel enterprises表1 代表性钢铁企业 |
钢铁厂名称 | 生产能力 | 规模 |
---|---|---|
河北敬业集团有限责任公司 (简称敬业集团) | 年产钢、铁、钢材各600万t | 大型 |
辛集市澳森钢铁有限公司 (简称澳森钢铁厂) | 年产铁260万t、粗钢220万t、轧钢235万t | 中型 |
藁城市宏森熔炼铸造有限公司 (简称宏森熔铸厂) | 年产铸造生铁、球墨铸铁60余万t | 小型 |
Fig. 1 Comparison of effects before and after using image fusion图1 影像融合前后效果对比图 |
Fig. 2 A blast furnace of Aosen steel company (the true color image of WorldView-2 after image fusion)图2 澳森钢铁厂某高炉(融合后的WorldView-2真彩色合成影像) |
Fig. 3 A gas tank of Aosen steel company (the true color image of WorldView-2 after image fusion)图3 澳森钢铁厂某煤气柜(融合后的WorldView-2真彩色合成影像) |
Fig. 4 An electricity dust removal facility of Aosen steel company (the true color image of WorldView-2 after image fusion)图4 澳森钢铁厂某电除尘设施区(融合后的WorldView-2真彩色合成影像) |
Fig. 5 A material storage field of Aosen steel company(the true color image of WorldView-2 after image fusion)图5 澳森钢铁厂某贮料区(融合后的WorldView-2真彩色合成影像) |
Tab. 2 The requirements of image geometric resolutions for identifying recognition features of different sized steel companies using remote sensing in Shijiazhuang region表2 石家庄地区不同规模钢铁厂遥感特征识别的影像分辨率需求 |
解译特征 | 影像分辨率(m) | 类型 | ||
---|---|---|---|---|
大型钢铁厂 | 中型钢铁厂 | 小型钢铁厂 | ||
高炉 | 2 | 1 | 0.5 | 全色 |
煤气柜 | 2 | 2 | 全色 | |
电除尘器 | 8 | 8 | 全色 | |
贮料区 | 5 | 5 | 5 | 多光谱 |
Fig. 6 Images for blast furnaces of different sized steel companies at various resolutions图6 不同规模钢铁厂高炉在不同分辨率影像的特征 |
Fig. 7 Images for gas tanks of different sized steel companies at various resolutions图7 不同规模钢铁厂煤气柜在不同分辨率影像的特征 |
Fig. 8 Images for electricity dust removal facilities of different sized steel companies at various resolutions图8 不同规模钢铁厂电除尘器在不同分辨率影像上的特征 |
Fig. 9 Images for material storage fields of different sized steel companies at various resolutions图9 不同规模钢铁厂贮料区在不同分辨率影像上的特征 |
Tab. 3 The requirements on image geometric resolutions for different detection assignments using remote sensing表3 不同核查任务对遥感影像分辨率的需求 |
核查任务 | 企业规模 | 影像分辨率需求 | |
---|---|---|---|
全色影像(m) | 多光谱影像(m) | ||
批小建大核查 | 大型钢铁厂 | 2 | |
中型钢铁厂 | 1 | ||
小型钢铁厂 | 0.5 | ||
重点区域已建成未批先建项目核查 | 大型钢铁厂 | 2 | |
中型钢铁厂 | 2 | 5 | |
小型钢铁厂 | 0.5 | 5 | |
非重点区域已建成未批先建项目核查 | 大、中、小型钢铁厂 | 5 | |
正在建设未批先建行为早期发现核查 | 大型钢铁厂 | 2 | |
中型钢铁厂 | 1 | ||
小型钢铁厂 | 0.5 |
The authors have declared that no competing interests exist.
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