论文主要阐述图像的边缘检测的算子、不变矩的特征值提取和车型的特征匹配。
This thesis expounds the match among edge detection of image, characteristic value selection of moment invariants and characteristic of vehicle mold.
图像矩不变量被提取出来作为图像的索引，来生成依赖于原始图像的、攻击者不知道且不同图像不同的水印。
Image moment invariants are extracted as the index to generate the image-dependent watermark, which is unknown to the attacker and different for different images.
讨论了复数矩不变性的实现方法，介绍了复数矩不变性在图像检索中的应用及算法。
Complex moment invariants are discussed in detail. Application of the invariants in image retrieval and its algorithm are introduced.
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