As go the feet...: on the estimation of attentional focus from stance
As go the feet...: on the estimation of attentional focus from stance
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脚走...：从立场估计注意力集中
DOI：
10.1145/1452392.1452412
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Lockhart, Thurmon
中科院分区：
文献类型：
--
作者：
Quek, Francis;Ehrich, Roger;Lockhart, Thurmon
视觉注意方向的估计对于大量的交互系统是至关重要的。本文研究了人的脚的位置（或站姿）的跨模态关系的注视焦点。直觉是，虽然一个人可以有一系列的注意力焦点从一个特定的立场，一个人可能更有可能看在特定的方向给定的方法向量和立场。我们认为，跨模态的关系是由生物力学和个人风格的约束。我们定义了一个立场向量，模型的方法停止前的方向和姿势的主体的脚。我们提出了一项研究，其中受试者的脚和方法向量进行跟踪。受试者在4个位置朗读笔记卡的内容。访问卡片的顺序是随机的。10名受试者每人阅读40行文本，产生400个站姿向量和注视方向。我们将数据分为4组，每组300个训练向量和100个测试向量，并训练一个神经网络来估计给定姿态向量的注视方向。我们的研究结果表明，31%的注视方向估计值在5°以内，51%的估计值在10°以内，60%的估计值在15°以内。考虑到跟踪足部位置的能力，该手术是微创的。
The estimation of the direction of visual attention is critical to a large number of interactive systems. This paper investigates the cross-modal relation of the position of one's feet (or standing stance) to the focus of gaze. The intuition is that while one CAN have a range of attentional foci from a particular stance, one may be MORE LIKELY to look in specific directions given an approach vector and stance. We posit that the cross-modal relationship is constrained by biomechanics and personal style. We define a stance vector that models the approach direction before stopping and the pose of a subject's feet. We present a study where the subjects' feet and approach vector are tracked. The subjects read aloud contents of note cards in 4 locations. The order of visits' to the cards were randomized. Ten subjects read 40 lines of text each, yielding 400 stance vectors and gaze directions. We divided our data into 4 sets of 300 training and 100 test vectors and trained a neural net to estimate the gaze direction given the stance vector. Our results show that 31% our gaze orientation estimates were within 5°, 51% of our estimates were within 10°, and 60% were within 15°. Given the ability to track foot position, the procedure is minimally invasive.