发明名称 |
COORDINATE DETECTION SYSTEM, INFORMATION PROCESSING APPARATUS, METHOD OF DETECTING COORDINATE, AND PROGRAM |
摘要 |
A coordinate detection system for detecting a coordinate pointed by a pointer with which a pointing operation is performed on a board face includes a first calculation unit that extracts a plurality of areas respectively indicative of a plurality of annular members provided in the pointer from a picked-up image picked by an image pick-up unit arranged at a predetermined position of the board face and calculates center positions of the extracted areas; and a second calculation unit that calculates a position of a tip portion of the pointer on the board face based on the center positions of the areas calculated by the first calculation unit and a position of a principal point of the image pick-up unit. |
申请公布号 |
US2015241997(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
US201514623910 |
申请日期 |
2015.02.17 |
申请人 |
ONO Yasuhiro |
发明人 |
ONO Yasuhiro |
分类号 |
G06F3/0354 |
主分类号 |
G06F3/0354 |
代理机构 |
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代理人 |
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主权项 |
1. A coordinate detection system for detecting a coordinate pointed by a pointer with which a pointing operation is performed on a board face, the coordinate detection system comprising:
a first calculation unit that extracts a plurality of areas respectively indicative of a plurality of annular members provided in the pointer from a picked-up image picked by an image pick-up unit arranged at a predetermined position of the board face and calculates center positions of the extracted areas; and a second calculation unit that calculates a position of a tip portion of the pointer on the board face based on the center positions of the areas calculated by the first calculation unit and a position of a principal point of the image pick-up unit. |
地址 |
Kanagawa JP |