3 October 2008 Reduction of speckle noise by multi-kinoforms in holographic three-dimensional display
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Proceedings Volume 7155, Ninth International Symposium on Laser Metrology; 71550C (2008) https://doi.org/10.1117/12.814510
Event: Ninth International Symposium on Laser Metrology, 2008, Singapore, Singapore
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.
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Huadong Zheng, Huadong Zheng, Yingjie Yu, Yingjie Yu, Haiyan Qian, Haiyan Qian, Anand Asundi, Anand Asundi, } "Reduction of speckle noise by multi-kinoforms in holographic three-dimensional display", Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71550C (3 October 2008); doi: 10.1117/12.814510; https://doi.org/10.1117/12.814510
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