Reduction of speckle noise by multi-kinoforms in holographic three-dimensional display

International Symposium on Laser Metrology Pub Date : 2008-09-29 DOI:10.1117/12.814510

Hua-Dong Zheng, Yingjie Yu, Haiyan Qian, A. Asundi

{"title":"Reduction of speckle noise by multi-kinoforms in holographic three-dimensional display","authors":"Hua-Dong Zheng, Yingjie Yu, Haiyan Qian, A. Asundi","doi":"10.1117/12.814510","DOIUrl":null,"url":null,"abstract":"In order to avoid missing low-frequency information of three-dimensional (3D) object, pseudorandom phase is generally added to object planes in tomographic hologram calculation, but speckle noise is inevitably introduced. A novel method is proposed to improving the quality of image reconstructed from kinoform generated by computational tomographic holography. Multi-kinoforms of 3D object are calculated, and the images of these kinoforms are superposed to suppress the speckle noise of reconstructed image. An invariant pseudorandom phase is added to each object plane in calculating each kinoform, and the pseudorandom phase is generated randomly again in next kinoform calculating. Digital reconstruction results from single kinoform and multi-kinoforms are analyzed by considering the peak signal-to-noise ratio (PSNR) and correlation coefficient (CC) between reconstructed images and original object, which verifies that the speckle noise in reconstructed image can be suppressed by superposing enough images reconstructed from the kinoforms. Electro-optical reconstruction results also confirm that the method is available.","PeriodicalId":191475,"journal":{"name":"International Symposium on Laser Metrology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Symposium on Laser Metrology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.814510","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 9

Abstract

In order to avoid missing low-frequency information of three-dimensional (3D) object, pseudorandom phase is generally added to object planes in tomographic hologram calculation, but speckle noise is inevitably introduced. A novel method is proposed to improving the quality of image reconstructed from kinoform generated by computational tomographic holography. Multi-kinoforms of 3D object are calculated, and the images of these kinoforms are superposed to suppress the speckle noise of reconstructed image. An invariant pseudorandom phase is added to each object plane in calculating each kinoform, and the pseudorandom phase is generated randomly again in next kinoform calculating. Digital reconstruction results from single kinoform and multi-kinoforms are analyzed by considering the peak signal-to-noise ratio (PSNR) and correlation coefficient (CC) between reconstructed images and original object, which verifies that the speckle noise in reconstructed image can be suppressed by superposing enough images reconstructed from the kinoforms. Electro-optical reconstruction results also confirm that the method is available.

查看原文本刊更多论文

全息三维显示中多图像形式对散斑噪声的抑制

在层析全息图计算中，为了避免三维物体的低频信息丢失，通常在物体平面上加入伪随机相位，但不可避免地会引入散斑噪声。提出了一种提高计算层析全息生成的相形图像重建质量的新方法。计算三维物体的多幅图像，并对这些图像进行叠加，以抑制重建图像的散斑噪声。在计算每一个kinoform时，在每个目标平面上加入一个不变的伪随机相位，在下一次kinoform计算时，再次随机生成伪随机相位。对单kinoform和多kinoform的数字重建结果进行了分析，考虑了重建图像与原始目标之间的峰值信噪比(PSNR)和相关系数(CC)，验证了通过叠加足够的kinoform重建图像可以抑制重建图像中的散斑噪声。光电重建结果也证实了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Symposium on Laser Metrology

自引率

0.00%

发文量