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【百家大講堂】第252期:非線性高光譜解混的新進(jìn)展

發(fā)布日期:2019-10-16

講座題目:非線性高光譜解混的新進(jìn)展 New Developments in Nonlinear Hyperspectral Unmixing

報(bào) 告 人:Paul Scheunders

時(shí)   間:2019年10月25日(周五)10:00-12:00

地   點(diǎn):中關(guān)村校區(qū)信息實(shí)驗(yàn)樓202報(bào)告廳

主辦單位:研究生院、信息與電子學(xué)院

報(bào)名方式:登錄北京理工大學(xué)微信企業(yè)號(hào)---第二課堂---課程報(bào)名中選擇“【百家大講堂】第252期:非線性高光譜解混的新進(jìn)展”

 

【主講人簡(jiǎn)介】

  1990年,Paul Scheunders在比利時(shí)安特衛(wèi)普大學(xué)獲得了統(tǒng)計(jì)力學(xué)領(lǐng)域的物理學(xué)博士學(xué)位。1992年,他成為安特衛(wèi)普大學(xué)物理系視覺(jué)實(shí)驗(yàn)室的一名助理研究員,目前是該實(shí)驗(yàn)室的一名教授。他目前的研究興趣是遙感圖像處理,尤其是高光譜圖像處理。他在圖像處理、模式識(shí)別和遙感領(lǐng)域的國(guó)際期刊和會(huì)議記錄上發(fā)表了250多篇論文。
  Paul ScheundersIEEE Transactions on Geoscience and Remote Sensing Remote Sensing (MDPI)的副主編,并在許多國(guó)際會(huì)議上擔(dān)任項(xiàng)目委員會(huì)成員,還是IEEE Geoscience and Remote Sensing Society的高級(jí)會(huì)員。

 

Paul Scheunders received the Ph.D. degree in physics, with work in the field of statistical mechanics, from the University of Antwerp, Antwerp, Belgium, in 1990. In 1992, he became a research associate with the Vision Lab, Department of Physics, University of Antwerp, where he is currently a professor. His current research interest includes remote sensing and in particular hyperspectral image processing. He has published over 250 papers in international journals and conference proceedings in the field of image processing, pattern recognition and remote sensing.

 

Paul Scheunders is Associate Editor of the IEEE Transactions on Geoscience and Remote Sensing and of Remote Sensing (MDPI) and has served as program committee member in numerous international conferences. He is senior member of the IEEE Geoscience and Remote Sensing Society.

【講座信息】

  光譜解混是以信號(hào)的純組分(端元光譜)和端元豐度的函數(shù)描述高光譜信號(hào)的過(guò)程。由于植被的多重反射或精細(xì)混合以及混合和復(fù)合材料化學(xué)性質(zhì)的變化,光譜反射率呈現(xiàn)高度非線性。本次報(bào)告首先通過(guò)光譜解混過(guò)程的圖示來(lái)討論一種基于模型的非線性光譜解混方法。將重點(diǎn)討論一種多線性解混模型以及包含陰影效應(yīng)的拓展。其次,報(bào)告將討論一種新的采用數(shù)據(jù)驅(qū)動(dòng)的非線性光譜解混,其需要真值的端元光譜和豐度。該方法適用于很多近距離應(yīng)用,如巖芯樣品、混合和復(fù)合材料的表征以及葉片參數(shù)估計(jì)。

 

Spectral unmixing is the process of describing a hyperspectral signal in function of its pure constituents (endmember spectra) and their fractional abundances. The spectral reflectance can show highly nonlinear behavior, because of multiple reflections in vegetation or intimate mixing and changes in chemical properties of mixed and compound materials. This talk will first discuss a model-based approach for nonlinear spectral unmixing based on a graph description of the spectral mixing process. In particular, a multilinear mixing model and an extension including shadow effects will be discussed. Secondly, the talk will discuss a new data-driven approach to nonlinear spectral unmixing, which requires ground truth endmember spectra and fractional abundances. This approach will be applied to a number of close range applications such as the characterization of drill core samples, mixed and compound materials, as well as leaf parameter estimation.


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