期刊文献+

基于Hilbert变换实现数字全息高精度相位重建 被引量:2

High accuracy phase reconstruction of digital hologram by Hilbert transform
原文传递
导出
摘要 为了提高数字全息相位重建精度,研究了基于Hilbert变换重建相位的理论和方法,并通过像面数字全息实验对该方法的有效性进行了验证,同时与数字全息常规重建方法得到的结果进行了比较.结果表明:Hilbert变换本身具有消除直流项的作用,对利用频域滤波滤除零级谱后的全息图进行Hilbert变换,能够彻底消除零级衍射项的干扰,从而提高相位重建精度.与常规重建结果相比,基于Hilbert变换的相位重建结果的标准偏差降低了14.0%.本文结果对提高数字全息相位重建精度具有重要的指导意义. To improve the phase accuracy of the reconstructed image of the digital hologram, we investigate the theory and method of the phase reconstruction based on the Hilbert transform, then, verify it by the image plane digital holographic experiment, and finally, compare it with the conventional digital holographic reconstruction method. Results show that Hilbert transform itself posseses the effect of eliminating DC term, therefore the effect of the zero-order frequency spectrum of the hologram which is filtered by frequency domain can be completely eliminated by Hilbert transform.Compared with the conventional Fourier reconstruction mehtod, the accuracy of the phase image can be improved by the reconstruction method based on Hilbert transform, and the standard deviation of the phase image is reduced by 14%in the experiment of red blood cell. This result has an important guiding significance to improve the accuracy of the digital holographic phase reconstruction.
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2014年第19期132-139,共8页 Acta Physica Sinica
基金 国家自然科学基金(批准号:61077001和61144005) 河北省自然科学基金(批准号:F2010001038 A2013402036和F2014402090) 河北省科技支撑计划(批准号:09277101D) 河北省教育厅科技计划重点项目(批准号:ZH2011241)资助的课题~~
关键词 数字全息术 像面数字全息术 HILBERT变换 相位重建 digital holography image-plane digital holography Hilbert transform phase reconstruction
  • 相关文献

参考文献2

二级参考文献18

共引文献20

同被引文献26

引证文献2

二级引证文献5

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部