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arXiv 1111.1090cs.CVcs.CReess.IV
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一种鲁棒、低成本的人脸检测和识别方法

A robust, low-cost approach to Face Detection and Face Recognition

Thadomal Shahani Engineering College(塔多马尔·沙阿尼工程学院)

Divya Jyoti, Aman Chadha, Pallavi Vaidya, M. Mani Roja

摘要:

在生物识别领域,基于虹膜、指纹或掌纹扫描等的识别系统通常被认为是更可靠的,因为这些实体的属性相对于时间的变化非常小。然而,在过去的十年中,计算机的数据处理能力已经增加了数倍,这使得实时视频内容分析成为可能。由此可见,当下需要的是一种鲁棒性强、自动化程度高、准确率可信的人脸检测与识别算法。所提出的使用离散小波变换(DWT)的人脸检测和识别系统接受来自数据库的人脸帧作为输入,所述数据库包含来自低成本设备的图像,所述低成本设备例如VGA相机、网络摄像头或甚至CCTV,其中图像质量较差。然后,使用L * a * b * 颜色空间的属性来检测面部区域,并且仅提取正面面部,使得消除所有附加背景。此外,该提取的图像被转换为灰度级,并且其尺寸被调整为128 x 128像素。然后将小波变换应用于整个图像以获得系数。通过比较属于测试图像的DWT系数与注册的参考图像的DWT系数来进行识别。在比较的基础上,使用欧氏距离分类器对数据库中的测试图像进行验证。精度为不同层次的DWT分解,因此,比较。

英文摘要:

In the domain of Biometrics, recognition systems based on iris, fingerprint or palm print scans etc. are often considered more dependable due to extremely low variance in the properties of these entities with respect to time. However, over the last decade data processing capability of computers has increased manifold, which has made real-time video content analysis possible. This shows that the need of the hour is a robust and highly automated Face Detection and Recognition algorithm with credible accuracy rate. The proposed Face Detection and Recognition system using Discrete Wavelet Transform (DWT) accepts face frames as input from a database containing images from low cost devices such as VGA cameras, webcams or even CCTV's, where image quality is inferior. Face region is then detected using properties of L*a*b* color space and only Frontal Face is extracted such that all additional background is eliminated. Further, this extracted image is converted to grayscale and its dimensions are resized to 128 x 128 pixels. DWT is then applied to entire image to obtain the coefficients. Recognition is carried out by comparison of the DWT coefficients belonging to the test image with those of the registered reference image. On comparison, Euclidean distance classifier is deployed to validate the test image from the database. Accuracy for various levels of DWT Decomposition is obtained and hence, compared.

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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