Pressing the Flesh: Sensing Multiple Touch and Finger Pressure on Arbitrary Surfaces
Pressing the Flesh: Sensing Multiple Touch and Finger Pressure on Arbitrary Surfaces
复制标题
按压肉体：感知任意表面上的多次触摸和手指压力
DOI：
10.1007/978-3-540-79576-6_3
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
B. Koleva
中科院分区：
文献类型：
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作者：
Joe Marshall;T. Pridmore;Michael P. Pound;S. Benford;B. Koleva
本文确定了一种新的手指压力物理相关性，可以在各种情况下通过视觉检测和测量。当人的手指压在坚硬的物体上时，肉会被压缩在两个刚性表面之间：目标物体的表面和指甲。这迫使血液从指尖的血管中流出，颜色略有改变，但系统地改变。这种效果是肉眼可见的，并且可以使用计算机视觉技术来测量。由于测量是根据手的属性而不是目标表面进行的，因此可以将多点触摸和压力传感添加到一系列表面（包括不透明、透明、光滑、纹理和非平面示例），而无需修改底层物理对象。所提出的方法允许将触摸感应安装到不适合先前技术的表面以及无法改变的物体，而不会丧失压力敏感性的额外表达范围。所涉及的方法设置简单且成本低廉，只需要一台国产相机和一台典型的计算机即可增强表面。介绍了利用这一线索产生压力响应的两个系统，以及使用由此产生的技术构建的交互式艺术装置的案例研究。初步实验表明，手指颜色的视觉监控将支持推送事件的识别。
This paper identifies a new physical correlate of finger pressure that can be detected and measured visually in a wide variety of situations. When a human finger is pressed onto a hard object the flesh is compressed between two rigid surfaces: the surface of the target object and the fingernail. This forces blood out of the vessels in the fingertip, changing its colour slightly, but systematically. The effect is visible to the naked eye and can be measured using techniques from computer vision. As measurements are made of properties of the hand, and not the target surface, multiple-touch and pressure sensing can be added to a range of surfaces - including opaque, transparent, smooth, textured and non-planar examples - without modification of the underlying physical object. The proposed approach allows touch sensing to be fitted to surfaces unsuitable for previous technologies, and objects which cannot be altered, without forfeiting the extra range of expression of pressure sensitivity. The methods involved are simple to set up and low cost, requiring only a domestic-quality camera and a typical computer in order to augment a surface. Two systems which exploit this cue to generate a response to pressure are presented, along with a case study of an interactive art installation contructed using the resulting technology. Initial experiments are reported which suggest that visual monitoring of finger colour will support recogntion of push events.