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| 一种基于图像表观的鲁棒姿态估计方法 |
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马丙鹏1,2,3, 山世光1,2, 陈熙霖1,2, 高文2,4
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1.中国科学院 智能信息处理重点实验室,北京 100190;2.中国科学院 计算技术研究所,北京 100190;3.中国科学院 研究生院,北京 100049);4.北京大学 信息科学技术学院,北京 100871
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| 摘要: |
| 提出一种利用图像的表观特征进行头部姿态估计的方法.该方法首先使用了一维Gabor 滤波器对头部图像进行特征提取,然后对提取得到的一维Gabor 特征进一步使用了基于核函数的局部费舍尔判别分析方法增强特征的判别能力.与传统二维Gabor 特征相比,一维Gabor 特征除了在计算速度和存储空间上具有明显的优势以外,更与姿态紧密相关.而基于核函数的局部费舍尔判别分析方法,能够解决姿态问题中存在的非线性问题和多模态问题.大量的实验结果表明,该算法对于姿态估计问题是有效的.特别需要指出的是,该算法具有良好的推广能力 |
| 关键词: 头部姿态估计 Gabor 变换 局部费舍尔判别分析 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60673091 (国家自然科学基金); the NationalHigh-Tech Research and Development Plan of China under Grant Nos.2006AA01Z122, 2007AA01Z163 (国家高技术研究发展计划(863)); the 100 Talents Program of the CAS (中国科学院百人计划); the ISVISION Technology Co. Ltd. (上海银晨智能识别科技有限公司) |
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| Robust Appearance-Based Method for Head Pose Estimation |
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MA Bing-Peng,SHAN Shi-Guang,CHEN Xi-Lin,GAO Wen
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1.Key Laboratory of Intelligent Information Processing, The Chinese Academy of Sciences, Beijing 100190, China;2.Institute of Computing Technology, The Chinese Academy of Sciences, Beijing 100190, China
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| Abstract: |
| This paper proposes a new pose estimation method based on the appearance of 2D head image. First,
the 1D Gabor filters are used to extract the features on the raw images. Compared with the traditional 2D Gaborrepresents, the 1D Gabor represents are more closely related to the head pose, while the advantages of computation and storage are obvious. Second, for the extracted features, a new method, named kernel local fisher discriminant analysis, is applied to eliminate the multimodal problem, while at the same time enhance the discrimination ability.Experimental results show that the proposed method is effective for pose estimation. It must be pointed out that the generalizability of the proposed method is illustrated by the impressive performance when the training dataset and the testing dataset are heterogeneous. |
| Key words: head pose estimation Gabor transform local Fisher discriminant analysis |
