It extracts and tracks feature point sets in the environment with single camera, and then calculates position and pose of the robot with measurement model and extended Kalman filtering.

利用单目摄像头提取和跟踪环境特征点集，进而根据观测模型利用扩展卡尔曼滤波算法估算出机器人的位姿。

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A less obvious means of Web personalization is collaborative-filtering software that resides on a Web site and tracks users' movements.

另一个不太引人注意的网站个人化的手段是协作过滤软件，它驻留在网站中，跟踪用户动向。

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After obtaining, editing and filtering audio sound tracks and uploading them to servers utilized by the IMAGiNE Group, Lovelady used software to synchronize the audio file with an illegally obtained video file.

FORBES: More iMagine Group Movie Pirates Walk The Plank In Federal Case