Novikova Tatiana, Bénière Arnaud, Goudail François, De Martino Antonello
LPICM, Ecole polytechnique, CNRS, Palaiseau 91128, France.
Opt Express. 2009 Dec 21;17(26):23851-60. doi: 10.1364/OE.17.023851.
It is known that polarization-sensitive backscattering images of different objects in turbid media may show better contrasts than usual intensity images. Polarimetric image contrast depends on both target and background polarization properties and typically involves averaging over groups of pixels, corresponding to given areas of the image. By means of numerical modelling we show that the experimental arrangement, namely, the shape of turbid medium container, the optical properties of the container walls, the relative positioning of the absorbing, scattering and reflecting targets with respect to each other and to the container walls, as well as the choice of the image areas for the contrast calculations, can strongly affect the final results for both linearly and circularly polarized light.
众所周知，浑浊介质中不同物体的偏振敏感背散射图像可能比普通强度图像显示出更好的对比度。偏振图像对比度取决于目标和背景的偏振特性，通常涉及对与图像给定区域相对应的像素组进行平均。通过数值模拟，我们表明实验装置，即浑浊介质容器的形状、容器壁的光学特性、吸收、散射和反射目标相对于彼此以及相对于容器壁的相对位置，以及用于对比度计算的图像区域的选择，会对线性偏振光和圆偏振光的最终结果产生强烈影响。
