| JPEG压缩对噪声相关性影响的修正 |
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| 引用本文： | 崔夏荣.JPEG压缩对噪声相关性影响的修正[J].光电子．激光,2009(9):1258-1261. |
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| 作者姓名： | 崔夏荣 |
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| 作者单位： | 武夷学院电子工程系; |
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| 基金项目： | 福建省教育厅科技基金资助项目(JA08245) |
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| 摘 要： | 提出了一种修正JPEG压缩对噪声相关性大小影响的新方法。该方法应用最小二乘法估计原理求出噪声相关性大小与品质因素的函数关系,根据修正的约束条件和归一化条件推导出修正函数,利用该修正函数把各种品质因素下的噪声相关性大小修正为最高品质因素下的噪声相关性大小,使得判别阈值与品质因素无关,从而修正了JPEG压缩对噪声相关性大小的影响。实验结果表明,利用该方法产生的错误拒绝率很小,但错误接受率随着品质因素的变小而变大。
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| 关 键 词： | JPEG压缩 品质因素 噪声相关性 最小二乘法 |
Modifying the effect of JPEG compression on noise correlation |
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| CUI Xia-rong NI NI.Modifying the effect of JPEG compression on noise correlation[J].Journal of Optoelectronics·laser,2009(9):1258-1261. |
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| Authors: | CUI Xia-rong NI NI |
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| Affiliation: | CUI Xia-rong NI NI (Department of Electronic Engineering,Wuyi University,Wuyishan 354300,China) |
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| Abstract: | A new method is proposed to modify the effect of JPEG compression on noise correlation between digital images and digital cameras.In this method,the relation function between noise correlation and the quality factor is sought by using least square estimation theory,then the modifying function is figured out based on constraint condition and normalization condition,and the value of noise correlation in any quality factor is modified to the value of noise correlation in maximal quality factor by using the mod... |
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| Keywords: | JPEG compression quality factor noise correlation least-square-method |
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