共查询到19条相似文献，搜索用时 125 毫秒
1.
《西安文理学院学报》2018,(6)
人脸图像采集、人脸定位、人脸识别预处理、身份确认以及身份查找等技术共同构成了人脸识别系统,被应用于多个领域的监控、安防措施当中,但由于技术局限,存在一定的缺陷与不足,需要不断补充.就基于图像分块稀疏表示的人脸识别算法展开研究,主要介绍了基于非重叠分块的加权稀疏表示算法、基于低秩分块稀疏表示的人脸识别算法、基于图像重构和哈希的人脸识别算法,并进一步对目前人脸识别系统在安防监控中的应用现状与前景进行了分析. 相似文献
2.
为了更好地保障信息安全,基于Matlab设计一个人脸识别系统。首先调用计算机摄像头采集人脸照片,检测并提取其中的人脸区域部分,并对提取出的人脸区域进行图像预处理,然后与事先建立好的人脸特征数据库进行对比与匹配,识别出检测到的人脸图像,输出识别结果,最后得出待测人的有效身份。运行结果表明,该人脸识别系统可有效实现人脸识别,且运行较为稳定。此外,研究发现Gabor算法在人脸特征提取方面具有良好性能。 相似文献
3.
人脸识别是基于人的脸部特征信息进行身份识别的一种生物识别技术.用摄像机采集人脸图像,并自动在图像中检测和跟踪人脸,进而对检测到的人脸进行脸部一系列相关技术处理,包括人脸图像采集、人脸定位、人脸识别,达到识别不同人身份的目的.在该项目实现过程中,本文首先调用了OPENCV自带关于人脸识别的函数facedetect 来进行初步人脸识别得到的初步效果,用肤色做出了静态人脸识别,在图片上显示了人脸,并用椭圆形框对其识别. 相似文献
4.
在人脸识别系统中,提取人脸特征成为关键。提出将人脸图像中的器官分割出来,作为模板在图像库中逐一匹配,再将各器官匹配的相关系数进行加权平均,其中最大值对应的图像即为与待测图像最相似的图像,从而达到人脸识别的目的。实验证明,该方法的人脸识别效果很好,且不受光照、表情等影响。 相似文献
5.
王芳 《河北软件职业技术学院学报》2007,9(3):55-57
本文构建了人脸识别软件系统的基本框架.对给定的包含人脸的输入图像,通过与已知人脸库中存储的模型进行匹配比较,确定是否是库中某一人物.如果是,则给出最佳匹配库中人物,从而实现自动人脸识别. 相似文献
6.
刘静 《渭南师范学院学报》2012,(12):77-79
对于人脸图像的规范化处理是人脸识别过程中的重要步骤.采用基于投影和几何变换的人脸图像规范化方法,对人脸图像水平垂直投影算法和几何变换算法进行了分析,并在ORL人脸库上进行实验.实验结果表明,该算法对人脸图像处理效果明显,适用于对人脸图像的规范化. 相似文献
7.
人脸图像的归一化对于人脸识别系统是一个承上启下的步骤.本文提出了一种基于眼定位的人脸图像归一化方法.首先在人脸区域采用形态方法定位眼睛中心点;然后以双眼中心点为基准的进行旋转校正,保证了人脸方向的一致性;其次根据人脸各部分比例关系切割出人脸矩形区域,对切割后人脸矩形区域进行图像缩放,保证人脸位置和大小的一致性,实现了几何归一化;最后采用光照归一化方法,消除不均匀光照及亮度不一致,达到光线归一化.该方法应用在识别系统中效果良好. 相似文献
8.
陈金西 《鹭江职业大学学报》2013,(3):40-44
基于PCA人脸识别算法设计考勤系统的核心部分——人脸识别,通过增加不同人脸姿态数,改进人脸识别算法,提高了人脸识别率.用户可通过本系统来采集人脸图像,定义不同姿态数以获得全姿态数据库.使用过程中若有不能识别情况出现,可改变或增加姿态数,重新学习训练以得到正确识别.经过测试,系统已达到设计要求,具有较高实用价值,可实际推广使用. 相似文献
9.
人脸识别是当前计算机视觉领域的一个研究热点,在日常生活中的应用也非常广泛.近年来,流形被认为是视觉感知的基础,利用流形学习算法可以寻找图像的内在特征.文章提出一种基于差异性值监督LLE(D-LLE)算法和图像分块的人脸识别方法,首先对提取的人脸图像进行分块,然后利用D-LLE算法进行人脸子图像集特征提取,最后使用最近邻分类器进行人脸图像识别.通过与现有人脸识别方法进行仿真结果比较,该方法能够取得较好的识别效果. 相似文献
10.
研究一种基于摄像头的快速人脸识别方法,具体步骤为:利用摄像头捕捉人脸图像,采用图像处理算法从所抓取的图像中提取能代表人脸的特征信息;然后对这些信息进行分析和处理利用主成分分析算法对人脸进行识别;最后采用VC++程序语言开发了基于摄像头的人脸识别系统。实验结果表明,该系统具有采集速度快,易读性和可移植性强的特点,并且具有很强的实用性。 相似文献
11.
Jo Ann Oravec 《Journal of Research in Special Educational Needs》2012,12(4):245-251
This paper outlines concerns for inclusive classrooms involving personal digital image modifications and selections, as well as avatar configurations. Classroom interactions incorporate various dimensions of personal appearance; however, educators try to make them primarily about knowledge and wisdom. Students in environments where they can interact with each other face‐to‐face are constantly immersed in issues involving their exterior manifestations. However, the utilisations of digital media in the classroom and in the online delivery of instruction are providing new ways of manipulating the digitised images of individuals, as well as their characteristic patterns of speech and motion. The rising popularity of avatars in education (such as in Second Life) also provides a new spectrum of representational choices. Individuals who reconstitute their images so as to appear more ‘normal’ may achieve results that are more problematic than liberating, however. Fostering the development of manipulated images and avatars for the purposes of educational interaction can also be construed as an attempt to ‘erase’ stigma and in effect disempower individuals, especially those with disabilities. Likewise, image modification can be incorporated into bullying initiatives as part of efforts to ridicule and marginalise. In endeavours to mitigate these problems, faculty and staff can model the creative and empowering use of digital image and avatar technologies while celebrating (and not eradicating) their own idiosyncratic personal characteristics. 相似文献
12.
Images with human faces comprise an essential part in the imaging realm. Occlusion or damage in facial portions will bring a remarkable discomfort and information loss. We propose an algorithm that can repair occluded or damaged facial images automatically, named ‘facial image inpainting＇. Inpainting is a set of image processing methods to recover missing image portions. We extend the image inpainting methods by introducing facial domain knowledge. With the support of a face database, our approach propagates structural information, i.e., feature points and edge maps, from similar faces to the missing facial regions. Using the interred structural information as guidance, an exemplar-based image inpainting algorithm is employed to copy patches in the same face from the source portion to the missing portion. This newly proposed concept of facial image inpainting outperforms the traditional inpainting methods by propagating the facial shapes from a face database, and avoids the problem of variations in imaging conditions from different images by inferring colors and textures from the same face image. Our system produces seamless faces that are hardly seen drawbacks. 相似文献
13.
A color based system using multiple templates was developed and implemented for detecting human faces in color images. The
algorithm consists of three image processing steps. The first step is human skin color statistics. Then it separates skin
regions from non-skin regions. After that, it locates the frontal human face(s) within the skin regions. In the first step,
250 skin samples from persons of different ethnicities are used to determine the color distribution of human skin in chromatic
color space in order to get a chroma chart showing likelihoods of skin colors. This chroma chart is used to generate, from
the original color image, a gray scale image whose gray value at a pixel shows its likelihood of representing the skin. The
algorithm uses an adaptive thresholding process to achieve the optimal threshold value for dividing the gray scale image into
separate skin regions from non skin regions. Finally, multiple face templates matching is used to determine if a given skin
region represents a frontal human face or not. Test of the system with more than 400 color images showed that the resulting
detection rate was 83%, which is better than most color-based face detection systems. The average speed for face detection
is 0.8 second/image (400×300 pixels) on a Pentium 3 (800 MHz) PC.
Project (No. 60203013) supported by National Natural Science Foundation of China 相似文献
14.
车牌图像预处理作为车牌自动识别系统最基础的一个环节,其处理效果直接影响到车牌自动识别系统的识别效果．对车牌图像的灰度化、灰度图像增强、灰度图像二值化预处理技术进行研究,利用采集的原始车牌图像在MAIZAB环境下进行实验．实验结果表明,所采用的预处理方法具有良好的处理效果,为后续车牌的准确定位与识别奠定基础． 相似文献
15.
压力是一种常见的社会心理现象。高校教师在教育结构调整和改革的背景下面临着较大的压力。压力源有社会变迁、工作构成、工作环境、公众形象等因素,也和个体的压力体验有关。压力既可能是行动的动力,也可能是行动的障碍和阻力。压力需适当的调整。 相似文献
16.
论西安城市文化选择的实现路径 总被引：1，自引：0，他引：1
文化是城市之魂,正确的城市文化选择可以更好地挖掘西安的人文历史资源,把它变为西安文化发展中的现实优势。在西安城市文化选择中,必须做好三个方面的工作：一要立足西安历史文化资源优势,保护好城市文化生态;二要面向世界,在现代化城市发展中打造西安城市文化的个性品质;三要打造具有历史特色的国际性现代化大城市形象。 相似文献
17.
金宝良 《金陵科技学院学报(社会科学版)》2007,21(3):36-38
人文是20世纪90年代以来的主流语境。我们关心社会的人文影像记录本身,其实是关心我们自己。创作者个人的意图或思想永远要面对历史和现实的挑战,这也是纪录片的魅力和意义所在。 相似文献
18.
Sample based 3D face reconstruction from a single frontal image by adaptive locally linear embedding 总被引：1，自引：0，他引：1
ZHANG Jian ZHUANG Yue-ting 《浙江大学学报(A卷英文版)》2007,8(4):550-558
In this paper, we propose a highly automatic approach for 3D photorealistic face reconstruction from a single frontal image. The key point of our work is the implementation of adaptive manifold learning approach. Beforehand, an active appearance model (AAM) is trained for automatic feature extraction and adaptive locally linear embedding (ALLE) algorithm is utilized to reduce the dimensionality of the 3D database. Then, given an input frontal face image, the corresponding weights between 3D samples and the image are synthesized adaptively according to the AAM selected facial features. Finally, geometry reconstruction is achieved by linear weighted combination of adaptively selected samples. Radial basis function (RBF) is adopted to map facial texture from the frontal image to the reconstructed face geometry. The texture of invisible regions between the face and the ears is interpolated by sampling from the frontal image. This approach has several advantages: (1) Only a single frontal face image is needed for highly automatic face reconstruction; (2) Compared with former works, our reconstruction approach provides higher accuracy; (3) Constraint based RBF texture mapping provides natural appearance for reconstructed face. 相似文献
19.
An analysis of the image of teachers found in the mass media reveals two conflicting stereotypes. One represents an idealised view of teaching, emphasising teachers’ interaction with individual pupils, the other singles out only the problems faced by the profession, such as personal conflicts, inadequate resources, or the atmosphere of tension and violence in the schools. These two images appear to follow successively in the self‐image teachers hold of their profession. During the course of their careers, they move further away from the idealistic view and adopt a more troubled outlook as they face up to the widening gap between their ideals and the realities of their employment. 相似文献