The pattern recognition of 16 levels gray image with iterative exposure schedule in Zn:Fe:LiNbO3

Qingxin Meng; Yubin Gai; Yi Zhang; Suhua Luo; Xiudong Sun; Yongyuan Jiang

doi:10.1117/12.649645

The pattern recognition of 16 levels gray image with iterative exposure schedule in Zn:Fe:LiNbO₃

Qingxin Meng^*
, Yubin Gai
, Yi Zhang
, Suhua Luo
, Xiudong Sun
, Yongyuan Jiang

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

An iterative method designed by angle multiplexing holographic storage is introduced to determine exposure schedule for multiplexing storage in Zn(2mol.%):Fe(0.03wt.%):LiNbO₃ crystal. In this experiment, 60 holograms were recorded in the same location of the crystal with 2mJ/cm ² incident exposure energy per hologram (0.7s exposure time at 2.8mW/cm² total incident intensity). And the self-correlation peaks of holograms were collected by CCD. We found that the cumulative grating strength of correlation peak versus exposure energy could be fitted to be a sixth-order polynomial, and made use of an iterative expression to calculate the exposure schedule for 60 holograms. The correlation recognition of 99 pictures with 16 levels gray is completed and the accuracy is 100%, while an appropriate exposure schedule is used to store the two-dimensional holograms.

Original language	English
Article number	59660Z
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5966
DOIs	https://doi.org/10.1117/12.649645
State	Published - 2005
Event	Seventh International Symposium on Optical Storage, ISOS 2005 - Zhanjiang, China Duration: 2 Apr 2005 → 6 Apr 2005

Keywords

Gray imag
Iterative exposure schedule
Pattern recognition
Zn:Fe:LiNbO

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10.1117/12.649645

Cite this

@article{05e12c615876457c8bb3213f1119de34,

title = "The pattern recognition of 16 levels gray image with iterative exposure schedule in Zn:Fe:LiNbO3",

abstract = "An iterative method designed by angle multiplexing holographic storage is introduced to determine exposure schedule for multiplexing storage in Zn(2mol.\%):Fe(0.03wt.\%):LiNbO3 crystal. In this experiment, 60 holograms were recorded in the same location of the crystal with 2mJ/cm 2 incident exposure energy per hologram (0.7s exposure time at 2.8mW/cm2 total incident intensity). And the self-correlation peaks of holograms were collected by CCD. We found that the cumulative grating strength of correlation peak versus exposure energy could be fitted to be a sixth-order polynomial, and made use of an iterative expression to calculate the exposure schedule for 60 holograms. The correlation recognition of 99 pictures with 16 levels gray is completed and the accuracy is 100\%, while an appropriate exposure schedule is used to store the two-dimensional holograms.",

keywords = "Gray imag, Iterative exposure schedule, Pattern recognition, Zn:Fe:LiNbO",

author = "Qingxin Meng and Yubin Gai and Yi Zhang and Suhua Luo and Xiudong Sun and Yongyuan Jiang",

year = "2005",

doi = "10.1117/12.649645",

language = "英语",

volume = "5966",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Seventh International Symposium on Optical Storage, ISOS 2005 ; Conference date: 02-04-2005 Through 06-04-2005",

}

TY - JOUR

T1 - The pattern recognition of 16 levels gray image with iterative exposure schedule in Zn:Fe:LiNbO3

AU - Meng, Qingxin

AU - Gai, Yubin

AU - Zhang, Yi

AU - Luo, Suhua

AU - Sun, Xiudong

AU - Jiang, Yongyuan

PY - 2005

Y1 - 2005

N2 - An iterative method designed by angle multiplexing holographic storage is introduced to determine exposure schedule for multiplexing storage in Zn(2mol.%):Fe(0.03wt.%):LiNbO3 crystal. In this experiment, 60 holograms were recorded in the same location of the crystal with 2mJ/cm 2 incident exposure energy per hologram (0.7s exposure time at 2.8mW/cm2 total incident intensity). And the self-correlation peaks of holograms were collected by CCD. We found that the cumulative grating strength of correlation peak versus exposure energy could be fitted to be a sixth-order polynomial, and made use of an iterative expression to calculate the exposure schedule for 60 holograms. The correlation recognition of 99 pictures with 16 levels gray is completed and the accuracy is 100%, while an appropriate exposure schedule is used to store the two-dimensional holograms.

AB - An iterative method designed by angle multiplexing holographic storage is introduced to determine exposure schedule for multiplexing storage in Zn(2mol.%):Fe(0.03wt.%):LiNbO3 crystal. In this experiment, 60 holograms were recorded in the same location of the crystal with 2mJ/cm 2 incident exposure energy per hologram (0.7s exposure time at 2.8mW/cm2 total incident intensity). And the self-correlation peaks of holograms were collected by CCD. We found that the cumulative grating strength of correlation peak versus exposure energy could be fitted to be a sixth-order polynomial, and made use of an iterative expression to calculate the exposure schedule for 60 holograms. The correlation recognition of 99 pictures with 16 levels gray is completed and the accuracy is 100%, while an appropriate exposure schedule is used to store the two-dimensional holograms.

KW - Gray imag

KW - Iterative exposure schedule

KW - Pattern recognition

KW - Zn:Fe:LiNbO

UR - https://www.scopus.com/pages/publications/33244461955

U2 - 10.1117/12.649645

DO - 10.1117/12.649645

M3 - 会议文章

AN - SCOPUS:33244461955

SN - 0277-786X

VL - 5966

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 59660Z

T2 - Seventh International Symposium on Optical Storage, ISOS 2005

Y2 - 2 April 2005 through 6 April 2005

ER -

The pattern recognition of 16 levels gray image with iterative exposure schedule in Zn:Fe:LiNbO₃

Abstract

Keywords

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