光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2009年
12期
3358-3361
,共4页
阎国倩%赵云升%宁艳玲%赵乃卓%仲桂新
閻國倩%趙雲升%寧豔玲%趙迺卓%仲桂新
염국천%조운승%저염령%조내탁%중계신
混合像元%拓扑位置%入射天顶角%高光谱
混閤像元%拓撲位置%入射天頂角%高光譜
혼합상원%탁복위치%입사천정각%고광보
Mixed-pixel%Topological location%Incident zenith angle%Hyperspectral
高光谱遥感能够提高地物识别和分类,通过光谱比较和匹配达到分类识别目的.由于传感器空间分辨率以及地面复杂多样性的差异,混合像元在遥感图像中普遍存在.混合像元的分解问题是定量遥感应用中的一个突出问题,如何有效地解译混合像元是遥感应用的关键问题之一.研究了面积比始终为1:1的两种材料形成的混合像元在不同入射大顶角和不同拓扑位置分布时的高光谱反射比曲线的特征与差异,为混合像元分类精度的提高提供科学依据.
高光譜遙感能夠提高地物識彆和分類,通過光譜比較和匹配達到分類識彆目的.由于傳感器空間分辨率以及地麵複雜多樣性的差異,混閤像元在遙感圖像中普遍存在.混閤像元的分解問題是定量遙感應用中的一箇突齣問題,如何有效地解譯混閤像元是遙感應用的關鍵問題之一.研究瞭麵積比始終為1:1的兩種材料形成的混閤像元在不同入射大頂角和不同拓撲位置分佈時的高光譜反射比麯線的特徵與差異,為混閤像元分類精度的提高提供科學依據.
고광보요감능구제고지물식별화분류,통과광보비교화필배체도분류식별목적.유우전감기공간분변솔이급지면복잡다양성적차이,혼합상원재요감도상중보편존재.혼합상원적분해문제시정량요감응용중적일개돌출문제,여하유효지해역혼합상원시요감응용적관건문제지일.연구료면적비시종위1:1적량충재료형성적혼합상원재불동입사대정각화불동탁복위치분포시적고광보반사비곡선적특정여차이,위혼합상원분류정도적제고제공과학의거.
Hyperspectral remote sensing can improve the identification and classification of surface features through the spectrum comparing and matching to achieve classification and recognition.Because of the spatial resolution of the sensor as well as the difference in complexity and diversity on the ground,mixed pixels in the image are prevalent in remote sensing.The problem of subpixel unmixing is a prominent issue in the quantitative application of remote sensing.How to effectively interpret the mixed pixel is one of the key issues in the application of remote sensing.In the present paper,the hyperspectral reflectance characteris tics of the mixed-pixels formed with two kinds of materials whose area ratios have always been 1:1 were studied at different in cident zenith angles and different topology location distribution,which provides a theoretical basis for the mixed pixel classifica tion accuracy improvement.