arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.0412cs.CVcs.AI
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基于颜色相似切片特征点融合的SIFT人耳识别

SIFT-based Ear Recognition by Fusion of Detected Keypoints from Color Similarity Slice Regions

Dr. B. C. Roy Engineering College(Dr. B. C. Roy工程学院);National Institute of Technology Rourkela(鲁尔克拉国家理工学院);Indian Institute of Technology Kanpur(坎普尔印度理工学院);Jadavpur University(jadavpur大学)

Dakshina Ranjan Kisku, Hunny Mehrotra, Phalguni Gupta, Jamuna Kanta Sing

摘要:

人耳生物特征被认为是与虹膜、指纹等特征相一致的最可靠、最不变性的生物特征之一。在许多情况下,耳朵生物特征可以与面部生物特征在许多生理和纹理特征方面进行比较。提出了一种基于尺度不变特征变换(SIFT)的人耳识别系统,该系统采用SIFT作为人耳图像的结构化特征描述子。为了使其对用户认证具有更强的鲁棒性,仅考虑颜色概率在一定范围内的区域进行不变SIFT特征提取,其中K-L散度用于保持颜色一致性。采用高斯混合模型和矢量量化方法对人耳肤色模式进行聚类,形成人耳肤色模型。最后,将K-L散度应用到GMM框架中,通过比较一对参考模型和探针耳图像之间的颜色相似性,记录指定范围内的颜色相似性。在对人耳图像进行彩色切片分割后,提取SIFT关键点,并将提取的SIFT特征建立一个增强向量进行匹配,在一对参考模型和探测耳图像之间完成匹配。所提出的技术已被测试的IITK耳数据库和实验结果表明,在识别精度的提高,而不变的特征提取的颜色切片区域,以保持系统的鲁棒性。

英文摘要:

Ear biometric is considered as one of the most reliable and invariant biometrics characteristics in line with iris and fingerprint characteristics. In many cases, ear biometrics can be compared with face biometrics regarding many physiological and texture characteristics. In this paper, a robust and efficient ear recognition system is presented, which uses Scale Invariant Feature Transform (SIFT) as feature descriptor for structural representation of ear images. In order to make it more robust to user authentication, only the regions having color probabilities in a certain ranges are considered for invariant SIFT feature extraction, where the K-L divergence is used for keeping color consistency. Ear skin color model is formed by Gaussian mixture model and clustering the ear color pattern using vector quantization. Finally, K-L divergence is applied to the GMM framework for recording the color similarity in the specified ranges by comparing color similarity between a pair of reference model and probe ear images. After segmentation of ear images in some color slice regions, SIFT keypoints are extracted and an augmented vector of extracted SIFT features are created for matching, which is accomplished between a pair of reference model and probe ear images. The proposed technique has been tested on the IITK Ear database and the experimental results show improvements in recognition accuracy while invariant features are extracted from color slice regions to maintain the robustness of the system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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