光场强度分布对鬼成像成像质量的影响

摘要

鬼成像的优越性使其应用前景非常广泛,而其成像质量是决定鬼成像实用化的重要因素之一.在鬼成像系统中,光源性质是影响鬼成像成像质量的重要因素.通过数值模拟与实验,验证了光场的空间结构的分布与一阶统计分布对鬼成像的成像质量的影响.并通过对比度和衬噪比这两个指标来衡量鬼成像的成像质量,发现光场的一阶统计性质对成像质量的影响尤为明显.将光场的统计分布调制为均匀分布时,能够显著提高了图像的对比度和衬噪比,因此可以只通过调节光场的一阶统计分布而提高鬼成像的成像质量.%The superiority of ghost imaging makes its application prospect very broad;and the image quality is one of the important factors to determine the practical application of ghost imaging. Through the numerical simulation and ex-periment,the distribution of the spatial structure of the light field and the influence of the first-order statistical distribu-tion on the imaging quality of the ghost imaging are verified. The influence of the first-order statistical properties of the optical field on the image quality is especially obvious according to the visibility and CNR of the image. When the statistical distribution of the light field is modulated into a uniform distribution,the visibility and CNR of the image can be improved obviously;so that the image quality of the ghost imaging can be improved only by adjusting the first-order statistical distribution of the light field.