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多角度成像解析大豆冠层的二向反射特征

张东彦 梁栋 赵晋陵 Coburn Craig Wang Zhijie 王秀

张东彦, 梁栋, 赵晋陵, Coburn Craig, Wang Zhijie, 王秀. 多角度成像解析大豆冠层的二向反射特征[J]. 红外与激光工程, 2013, 42(3): 787-797.
引用本文: 张东彦, 梁栋, 赵晋陵, Coburn Craig, Wang Zhijie, 王秀. 多角度成像解析大豆冠层的二向反射特征[J]. 红外与激光工程, 2013, 42(3): 787-797.
Zhang Dongyan, Liang Dong, Zhao Jinling, Coburn Craig, Wang Zhijie, Wang Xiu. Bidirectional reflectance characteristics of soybean canopy using multi-angle hyperspectral imaging[J]. Infrared and Laser Engineering, 2013, 42(3): 787-797.
Citation: Zhang Dongyan, Liang Dong, Zhao Jinling, Coburn Craig, Wang Zhijie, Wang Xiu. Bidirectional reflectance characteristics of soybean canopy using multi-angle hyperspectral imaging[J]. Infrared and Laser Engineering, 2013, 42(3): 787-797.

多角度成像解析大豆冠层的二向反射特征

基金项目: 

安徽省自然科学基金青年基金(1308085);安徽省高等学校省级自然科学研究项目(KJ2013A026);国家高技术研究发展计划(2012AA101903);高等学校博士学科点科研基金(20113401110006);安徽大学博士科研启动项目

详细信息
    作者简介:

    张东彦(1982- ),男,讲师,博士,主要从事高光谱图像处理及遥感定量化的研究. Email:zhangdy@nercita.org.cn;王秀(1965- ),男,研究员,博士,主要从事精准农业装置的开发与应用。Email:wangx@nercita.org.cn.

    张东彦(1982- ),男,讲师,博士,主要从事高光谱图像处理及遥感定量化的研究. Email:zhangdy@nercita.org.cn;王秀(1965- ),男,研究员,博士,主要从事精准农业装置的开发与应用。Email:wangx@nercita.org.cn.

  • 中图分类号: TP79;S127

Bidirectional reflectance characteristics of soybean canopy using multi-angle hyperspectral imaging

  • 摘要: 植被冠层二向性反射特征是定量遥感必须关注的一个问题。论文借助自主研发的多角度成像系统,在不同观测时间对不同种植密度下的大豆冠层进行多角度成像数据采集,通过对图谱合一的高光谱影像中大豆植株、土壤背景和阴影叶片进行逐步分离,对比分析纯大豆植被与植被-土壤混合冠层的二向反射(Bidirectional Reflectance, BR)变化特征,研究发现:在主平面观测时,土壤光谱去除后,即纯植被冠层反射率在前向观测时,随着天顶角的减小而增大,这不同于植被和土壤同时存在时的研究结果(BR 随着天顶角的增加而增大);当观测方向由主平面的前向朝后向变动时,可见光和近红外波段的纯植被冠层反射率表现为逐步增大的趋势,这和土壤光谱去除前的变化趋势也不同;在垂直主平面观测时,去除土壤背景后的纯植被冠层反射率与混合植被反射率特征有相同的趋势,但在垂直主平面方向的对称性更强。上述结果在不同密度、不同观测时间的大豆冠层BR 特征有相近的趋势,这为多角度遥感的发展提供了必要的基础研究。
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  • 收稿日期:  2012-07-22
  • 修回日期:  2012-08-19
  • 刊出日期:  2013-03-25

多角度成像解析大豆冠层的二向反射特征

    作者简介:

    张东彦(1982- ),男,讲师,博士,主要从事高光谱图像处理及遥感定量化的研究. Email:zhangdy@nercita.org.cn;王秀(1965- ),男,研究员,博士,主要从事精准农业装置的开发与应用。Email:wangx@nercita.org.cn.

    张东彦(1982- ),男,讲师,博士,主要从事高光谱图像处理及遥感定量化的研究. Email:zhangdy@nercita.org.cn;王秀(1965- ),男,研究员,博士,主要从事精准农业装置的开发与应用。Email:wangx@nercita.org.cn.

基金项目:

安徽省自然科学基金青年基金(1308085);安徽省高等学校省级自然科学研究项目(KJ2013A026);国家高技术研究发展计划(2012AA101903);高等学校博士学科点科研基金(20113401110006);安徽大学博士科研启动项目

  • 中图分类号: TP79;S127

摘要: 植被冠层二向性反射特征是定量遥感必须关注的一个问题。论文借助自主研发的多角度成像系统,在不同观测时间对不同种植密度下的大豆冠层进行多角度成像数据采集,通过对图谱合一的高光谱影像中大豆植株、土壤背景和阴影叶片进行逐步分离,对比分析纯大豆植被与植被-土壤混合冠层的二向反射(Bidirectional Reflectance, BR)变化特征,研究发现:在主平面观测时,土壤光谱去除后,即纯植被冠层反射率在前向观测时,随着天顶角的减小而增大,这不同于植被和土壤同时存在时的研究结果(BR 随着天顶角的增加而增大);当观测方向由主平面的前向朝后向变动时,可见光和近红外波段的纯植被冠层反射率表现为逐步增大的趋势,这和土壤光谱去除前的变化趋势也不同;在垂直主平面观测时,去除土壤背景后的纯植被冠层反射率与混合植被反射率特征有相同的趋势,但在垂直主平面方向的对称性更强。上述结果在不同密度、不同观测时间的大豆冠层BR 特征有相近的趋势,这为多角度遥感的发展提供了必要的基础研究。

English Abstract

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