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    • 4. 发明申请
    • METHOD FOR IDENTIFYING A SCENE FROM MULTIPLE WAVELENGTH POLARIZED IMAGES
    • 用于从多个波长偏振图像中识别场景的方法
    • US20120183175A1
    • 2012-07-19
    • US13319077
    • 2010-05-03
    • Mehdi AlouiniArnaud BeniereDaniel DolfiGérard BergincFrançois Goudail
    • Mehdi AlouiniArnaud BeniereDaniel DolfiGérard BergincFrançois Goudail
    • G06K9/62
    • G01N21/21G01J3/447G01J4/04
    • Techniques for identifying images of a scene including illuminating the scene with a beam of 3 or more wavelengths, polarized according to a determined direction; simultaneously acquiring for each wavelength an image X//(λi) polarized according to said direction and an image X⊥(λi) polarized according to a direction perpendicular to said direction, X⊥(λi) being spatially distinct from X//(λi); calculating for each wavelength an intensity image which is a linear combination of X//(λi) and X⊥(λi), providing an intensity spectrum for each pixel; calculating for each wavelength a polarization contrast image on the basis of an intensity ratio calculated as a function of X//(λi) and of X⊥(λi), providing a polarization contrast spectrum for each pixel; and calculating a spectro-polarimetric contrast image of the scene, each pixel of this spectro-polarimetric contrast image calculated based on the intensity spectrum and the contrast spectrum of the pixel considered.
    • 用于识别场景的图像的技术,包括用根据确定的方向极化的3个或更多波长的束照射场景; 同时获取根据所述方向偏振的图像X //(λi)和根据与所述方向垂直的方向偏振的图像X⊥(λi),X⊥(λi)在空间上不同于X //(λi ); 为每个波长计算作为X //(λi)和X⊥(λi)的线性组合的强度图像,为每个像素提供强度谱; 基于以X //(λi)和X⊥(λi)的函数计算的强度比计算每个波长的偏振对比度图像,为每个像素提供偏振对比度光谱; 并计算场景的光谱偏振度对比度图像,基于所考虑的像素的强度光谱和对比度光谱计算该分光偏振对比度图像的每个像素。