| 利用多尺度变换提高数字全息再现像质量 |
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| 引用本文： | 王亮,冯少彤,聂守平,黄飞.利用多尺度变换提高数字全息再现像质量[J].光电子．激光,2007,18(5):625-628. |
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| 作者姓名： | 王亮 冯少彤 聂守平 黄飞 |
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| 作者单位： | 南京师范大学物理科学与技术学院,江苏省光电技术重点实验室,江苏,南京,210097 |
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| 基金项目： | 江苏省自然科学基金
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江苏省高校自然科学基金 |
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| 摘 要： | 针对三维物体数字全息实验系统的特点,提出了基于多尺度变换的数字图像处理方法.利用小波变换和Curvelet变换的多尺度处理,成功滤除再现像中的零级衍射光斑,有效减小散斑噪声的影响并保留更多物像边缘信息,得到较高质量的数字全息再现像.实验结果表明,该方法具有较高实用性.
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| 关 键 词： | 数字全息 多尺度变换 小波变换 零级衍射光斑 Curvelet变换 散斑噪声 |
| 文章编号： | 1005-0086（2007）05-0625-04 |
| 收稿时间： | 6/1/2006 12:00:00 AM |
| 修稿时间： | 2006-06-012006-11-09 |
Improving the Reconstructed Image Quality of the Digital Holography Through Multi-scale Transform |
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| WANG Liang,FENG Shao-tong,NIE Shou-ping,HUANG Fei.Improving the Reconstructed Image Quality of the Digital Holography Through Multi-scale Transform[J].Journal of Optoelectronics·laser,2007,18(5):625-628. |
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| Authors: | WANG Liang FENG Shao-tong NIE Shou-ping HUANG Fei |
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| Affiliation: | Jiangsu Key Laboratory for Optoelectronic Technology ,School of Physical Science and Technology, Nanjing Nor rnal University,Nanjing 210097,China |
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| Abstract: | A set of digital image processing algorithms based on multi-scale transform is proposed according to the characteristics of 3-D digital holography. By applying multi-scale principle of wavelet transform and curvelet transform,the zero-order diffraction spot is eliminated,and the speckle noise is reduced effectively while more edge information of object is maintained. As a result,the better quality image is obtained by combining the curvelet transform and digital holography. The experimental result shows that the method is practical and efficient. |
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| Keywords: | digital holography multi-scale transform wavelet transform zero order of diffraction curvelet transform speckle noise |
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