Aiming at a common copy-paste forgery in the research field of digital image forensics, this paper proposes a detection approach based on wavelet transform and singular value decomposition.

针对数字图像取证中一类常见的复制粘贴图像伪造，本文提出了一种基于小波变换和奇异值分解的检测算法。

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This paper examines the research situation on face image detection and recognition and designs a facial feature automatic extract system.

对人脸图像检测与识别技术的研究现状进行简要论述，并自行设计一个人脸特征自动提取系统。

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Lastly, based on the research of the important image feature, i. e. corner, a new Accumulative Intersection Space based corner detection method is developed.

最后，本文对一种重要的图像特征——角点进行了研究，提出了一种新的基于交点累积空间的角点提取算法。

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