多尺度压缩感知鬼成像系统

Multi-scale compressed ghost imaging system

现有的鬼成像系统中都使用固定尺度的散斑进行成像,而目前的仪器可以实现多尺度散斑鬼成像。针对采用多尺度散斑的压缩感知鬼成像系统,采用计算机仿真模拟的方法,利用具有四个分辨率尺度的图像作为原始图像,对多种不同尺度散斑且不同比重情况下的恢复图像进行了研究分析。结果表明采用多尺度散斑的压缩感知鬼成像系统可以得到更加靠近真实值的图像,且在小散斑尺寸占据大比重的情况下,获取图像的分辨率不会受到干扰。

Fixed-scale speckles are used in existing ghost imaging system,while the current instrument can achieve multi-scale speckles ghost imaging.It focuses on the research of compressed sensing ghost imaging system using multi-scale speckles.Through the computer simulation and using the four resolution scales＇ image as the original image,restored images were obtained to analyse a variety of different scales and different proportion of speckle cases.The results show that the compressed sensing ghost imaging system using multi-scale speckles can obtain image which is close to the true value.And when the small scale speckles occupy large proportion,the recovered image resolution is not disturbed.