发明名称 |
Coded visual markers for tracking and camera calibration in mobile computing systems |
摘要 |
A method for determining a pose of a user is provided including the steps of capturing a video image sequence of an environment including at least one coded marker; detecting if the coded marker is present in the video images; if the marker is present, extracting feature correspondences of the coded marker; determining a code of the coded marker using the feature correspondences; and comparing the determined code with a database of predetermined codes to determine the pose of the user. According to an embodiment, the coded marker includes four color blocks arranged in a square formation and the determining a code of the at least one marker further includes determining a color of each of the four blocks. According to another embodiment, the marker includes a coding matrix and a code of the marker being determined by numbered squares of the coding matrix being covered by a circle.
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申请公布号 |
US2003076980(A1) |
申请公布日期 |
2003.04.24 |
申请号 |
US20020262693 |
申请日期 |
2002.10.02 |
申请人 |
SIEMENS CORPORATE RESEARCH, INC.. |
发明人 |
ZHANG XIANG;NAVAB NASSIR |
分类号 |
G06K9/46;G06T7/00;G06T7/20;(IPC1-7):G06K9/00 |
主分类号 |
G06K9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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