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Yongqiang Qin


Publications by Yongqiang Qin (bibliography)

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Qin, Yongqiang, Yu, Chun, Liu, Jie, Wang, Yuntao, Shi, Yue, Su, Zhouyue and Shi, Yuanchun (2011): uTable: a seamlessly tiled, very large interactive tabletop system. In: Proceedings of the 2011 ACM International Conference on Interactive Tabletops and Surfaces 2011. pp. 244-245. http://dx.doi.org/10.1145/2076354.2076397

We present uTable, a very large horizontal interactive surface which accommodates up to ten people sitting around and interacting in parallel. We identify the key aspects for building such large interactive tabletops and discuss the pros and cons of potential techniques. After several rounds of trials, we finally chose tiled rear projection for building the very large surface and DI solution for detecting touch inputs. We also present a set of techniques to narrow the interior bezels, uniform the color/brightness of the surface and handle multiple streams of inputs. Finally uTable achieves a good overall performance in terms of display effect and input capability.

© All rights reserved Qin et al. and/or ACM Press

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Qin, Yongqiang, Shi, Yuanchun, Jiang, Hao and Yu, Chun (2010): Structured laser pointer: enabling wrist-rolling movements as a new interactive dimension. In: Proceedings of the 2010 International Conference on Advanced Visual Interfaces 2010. pp. 163-166. http://doi.acm.org/10.1145/1842993.1843022

In this paper, we re-visit the issue of multi-point laser pointer interaction from a wrist-rolling perspective. Firstly, we proposed SLP -- Structured Laser Pointer, and detects a laser pointer's rotation along its emitting axis. SLP adds the wrist-rolling gestures as a new interactive dimension to the conventional laser pointer interaction approach. We asked a group of users to perform certain tasks using SLP, and derived from test results a set of criteria to distinguish between incidental and intentional SLP rolling, and then the experimental results also approved the high accuracy and acceptable speed as well as throughput of such rolling interaction.

© All rights reserved Qin et al. and/or their publisher

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Yu, Chun, Shi, Yuanchun, Balakrishnan, Ravin, Meng, Xiangliang, Suo, Yue, Fan, Mingming and Qin, Yongqiang (2010): The satellite cursor: achieving MAGIC pointing without gaze tracking using multiple cursors. In: Proceedings of the 2010 ACM Symposium on User Interface Software and Technology 2010. pp. 163-172. http://doi.acm.org/10.1145/1866029.1866056

We present the satellite cursor -- a novel technique that uses multiple cursors to improve pointing performance by reducing input movement. The satellite cursor associates every target with a separate cursor in its vicinity for pointing, which realizes the MAGIC (manual and gaze input cascade) pointing method without gaze tracking. We discuss the problem of visual clutter caused by multiple cursors and propose several designs to mitigate it. Two controlled experiments were conducted to evaluate satellite cursor performance in a simple reciprocal pointing task and a complex task with multiple targets of varying layout densities. Results show the satellite cursor can save significant mouse movement and consequently pointing time, especially for sparse target layouts, and that satellite cursor performance can be accurately modeled by Fitts' Law.

© All rights reserved Yu et al. and/or their publisher

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