摘要
When using the image mutual information to assess the quality of reconstructed image in pseudothermal light ghost imaging, a negative exponential behavior with respect to the measurement number is observed. Based on information theory and a few simple and verifiable assumptions, semi-quantitative model of image mutual information under varying measurement numbers is established. It is the Gaussian characteristics of the bucket detector output probability distribution that leads to this negative exponential behavior. Designed experiments verify the model.
When using the image mutual information to assess the quality of reconstructed image in pseudo- thermal light ghost imaging, a negative exponential behavior with respect to the measurement number is observed. Based on information theory and a few simple and verifiable assumptions, semi-quantitative model of image mutual information under varying measurement numbers is established. It is the Gaussian characteristics of the bucket detector output probability distribution that leads to this negative exponential behavior. Designed experiments verify the model.
基金
supported by the National Natural Science Foundation of China (61631014, 61401036, 61471051 and 61531003)
the National Science Fund for Distinguished Young Scholars of China (61225003)
the China Postdoctoral Science Foundation (2015M580008)
the Youth Research and Innovation Program of BUPT (2015RC12)
