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电子学报  2004 

基于MAP准则的两步人脸图像分辨率增强算法

, PP. 196-198

Keywords: 人脸图像,分辨率增强,MAP准则

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Abstract:

如何提高人脸图像分辨率是改进视觉监视系统性能需要解决的关键问题之一.本文提出了一种基于MAP准则的两步人脸图像分辨率增强新算法.第一步利用PCA模型和最大后验概率(MAP)方法计算人脸的整体图像,第二步利用Markov随机场模型和MAP方法计算反映真实图像与整体图像差异的残差图像.最终的结果是第一步得到的整体图像与第二步得到的残差图像之和.利用新算法我们分别对图像分辨率增强16倍(由32×24提高到128×96)和图像分辨率增强64倍(由16×12提高到128×96)两种情况进行了实验,均取得了令人满意的结果.

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