Journal of Software:2011.22(zk2):80-88

(清华大学 计算机科学与技术系,北京 100084)
Marker Design and Recognition on Tiled Interaction Tabletop
WANG Yun-Tao,YU Chun,QIN Yong-Qiang,SHI Yuan-Chun
(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China)
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Received:July 15, 2011    Revised:December 02, 2011
> 中文摘要: 为超大幅面拼接式交互桌面设计实现了标记识别系统.标记是一种图形编码,为实物交互提供信息标记.设计标记识别系统受到包括最小识别尺寸、低精度的长度识别、交叠区面积等条件的约束.提出的标记uMarker,具有尺寸小、编码容量大的特点,与著名的reacTIVision 的小型标记相比,标记面积缩小75.7%,数量增多16.7%.标记识别系统通过图像处理的方式对uMarker 进行识别,在同时识别数量、识别效率和识别速度方面性能优越,并解决了uMarker 的引入导致的误识别和反复识别问题.uMarker 可以提供实物的位置、方向和分类信息,扩展了桌面的实物交互能力.
中文关键词: 交互桌面  标记  标记识别
Abstract:This research designs and implements a marker recognition system that allows detection of tangible objects on a very large tabletop system. The design of the system is challenged by constraints including minimal distinguished size, non-linear imaging of the camera and areas of blind region caused by initiative IR illumination. After iterating through several designs, the study proposes the uMarker, an image-coding paper marker. Compared to the widely used reacTIVision, it is 75.7% smaller in size and 16.7% higher in coding capacity. The marker recognition system recognizes uMarker through image processing, which achieves good performances on capacity, recognition accuracy and efficiency. Furthermore, it can distinguish between fingers and uMarker and remove duplicated markers. In conclusion, uMarker extends the tabletop system with the ability to recognize tangible objects including information about location, direction and category.
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基金项目:国家高技术研究发展计划(863)(2009AA01Z336) 国家高技术研究发展计划(863)(2009AA01Z336)
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WANG Yun-Tao,YU Chun,QIN Yong-Qiang,SHI Yuan-Chun.Marker Design and Recognition on Tiled Interaction Tabletop.Journal of Software,2011,22(zk2):80-88