改善光学扫描全息聚焦层图像效果的实验研究
发布时间：2018-11-17 07:33
【摘要】：为了改善光学扫描全息系统聚焦层重建图像的效果,采用随机相位光瞳替代传统针孔光瞳的方法,进行了理论的分析和实验验证,分别得到了传统光学扫描全息和基于随机相位编码的光学扫描全息系统下重建图像和原图像之间的信噪比、相关系数以及频谱分布比较结果。结果表明,在实验条件相同的情况下,基于随机相位编码的光学扫描全息系统重建的图像具有更高的信噪比和相关系数,且其图像频谱和原图像频谱曲线的变化趋势更相似,因而更接近于原图像。
[Abstract]:In order to improve the effect of focusing layer reconstruction in optical scanning holographic system, the random phase pupil is used to replace the traditional pinhole pupil, and the theoretical analysis and experimental verification are carried out. The comparison results of SNR, correlation coefficient and spectrum distribution between reconstructed image and original image under conventional optical scanning holography and optical scanning holography based on random phase coding are obtained respectively. The results show that under the same experimental conditions, the reconstructed image based on random phase coding has higher SNR and correlation coefficient, and the variation trend of the image spectrum is more similar to that of the original image spectrum. Therefore, it is closer to the original image.
【作者单位】： 四川大学电子信息学院;
【基金】：国家自然科学基金资助项目(61475104;61177009)
【分类号】：O438.1
本文编号：2336976
[Abstract]:In order to improve the effect of focusing layer reconstruction in optical scanning holographic system, the random phase pupil is used to replace the traditional pinhole pupil, and the theoretical analysis and experimental verification are carried out. The comparison results of SNR, correlation coefficient and spectrum distribution between reconstructed image and original image under conventional optical scanning holography and optical scanning holography based on random phase coding are obtained respectively. The results show that under the same experimental conditions, the reconstructed image based on random phase coding has higher SNR and correlation coefficient, and the variation trend of the image spectrum is more similar to that of the original image spectrum. Therefore, it is closer to the original image.
【作者单位】： 四川大学电子信息学院;
【基金】：国家自然科学基金资助项目(61475104;61177009)
【分类号】：O438.1
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