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	Features extraction and matching of teeth image based on the SIFT algorithm (EI CONFERENCE) 会议论文 OAI收割 2012 2nd International Conference on Computer Application and System Modeling, ICCASM 2012, July 27, 2012 - July 29, 2012, Shenyang, China 作者: Wang X.; Wang X.; Wang X. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 Using of SIFT algorithm in the image of teeth model can detect the features of the teeth image effectively. In this approach first search over all scales and image locations by using a difference-of-Gaussian function to identify potential interest points that are invariant to scale and orientation. Second select keypoints based on measures of their stability and a detailed model is fit to determine location and scale at each candidate location. Third assign one or more orientations to each keypoint location based on local image gradient directions. Last measure the local image gradients at the selected scale in the region around each keypoint. And then use the KNN algorithm to match the features. Through lots of experiments and comparing with other feature extraction methods this method can detect the features of the teeth model effectively and offer some available parameters for 3D reconstruction of the teeth model. the authors.
	指纹匹配中的关键问题研究学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2008 作者: 郑晓隆收藏 \| 浏览/下载：65/0 \| 提交时间：2015/09/02 指纹分割方向场奇异点检测指纹对齐细节点打分指纹匹配 Fingerprint segmentation orientation field singular point detection fingerprint alignment minutia scoring fingerprint match
	嵌入式环境下低配置指纹识别技术研究学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2006 作者: 谢卫华收藏 \| 浏览/下载：34/0 \| 提交时间：2015/09/02 模糊逻辑方向权重滤波器新脊线特征方向比对嵌入式指纹应用低内存算法 Fuzzy logic Orientation power filter New ridge line feature Orientation match Embedded algorithm application Low-memory algorithm