Tankendo Motion Estimation System with Robustness Against Differences in Color and Size Between Users' Clothes Using 4-Color Markers with Elastic Belts
Tankendo Motion Estimation System with Robustness Against Differences in Color and Size Between Users' Clothes Using 4-Color Markers with Elastic Belts
复制标题
Tankendo 运动估计系统使用 4 色标记和松紧带，对用户衣服颜色和尺寸的差异具有鲁棒性
DOI：
10.1145/3301879.3301890
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
K.Hoshino
中科院分区：
文献类型：
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作者：
M.Nakamura;K.Hoshino
为了让个人在不需要随时更换衣服的情况下，当场尝试训练剑道的刺击动作，我们提出了一种系统，该系统能够使用多达4色标记和单个相机在矢状平面上捕捉和分析剑道的刺击动作姿势，即使用户的衣服和背景中放置的东西存在颜色和大小的差异。首先，针对拍摄图像中较宽区域内的背景和用户衣服的颜色，系统集成了对用户的颜色标记进行不同颜色的分配，用户之间可能通过推/击动作相互接近，而对用户的颜色标记进行相同颜色的分配，用户之间的距离不改变。此外，当用户移动时，一些颜色标记可能很难在视觉上观察到，并且与背景中相对较宽的区域重叠。为了解决这个问题，将不同于背景的颜色分配给有问题的颜色标记。这使得在图像处理中设置提取标记的阈值变得容易，即使捕获图像的色调减少了。其次，为了防止因衣服松脱而导致色标偏离原来的位置，使用者身上系有固定色标的松紧带。我们的系统评估结果表明，当用户移动时，无论插入/击打模式如何，只要按照建议的程序将颜色标记附加到用户的身体上，即使衣服或背景中的某些东西的颜色会发生变化，多达4色标记可能会防止相似颜色标记靠近或遮挡彼此。此外，当按照系统中指定的标记附加程序将彩色标记附加到用户身上时，可以获得相对满意的关节角估计精度。
To allow an individual to immediately try to train thrusting and striking motions of Tankendo on his / her own on the spot without changing clothes whenever necessary, we suggests a system, which is capable of capturing and analyzing the postures of thrusting and striking motions of Tankendo in a sagittal plane using up to 4-color markers and a single camera, even though there are differences in color and size between users' clothes and something is placed in the background. First, focusing on the colors of the background and users' clothes in a relatively wide area on a captured image, the system has integrated the procedure that different colors are allocated to the color markers of users, who may approach each other through a thrusting / striking motion, while the same color is allocated to the color markers of users, between whom the distance does not change. Moreover, some color marker may be difficult to visually observe when the user moves and overlaps with something with a relatively wide area in the background. To address this problem, a color different from that of the background is allocated to the color marker in question. This makes it easy to set the thresholds for extracting the markers in image processing even though the hue across the captured image reduces. Second, to prevent the color markers from getting out of original positions due to loosened clothes, the elastic belts with color markers fixed on are attached to e user's body. The result of our system evaluation demonstrated that up to 4-color markers might prevent similar color markers from approaching or occluding each other when the users move, regardless of the mode of thrusting / striking, simply by attaching the color markers to the users' bodies in the suggested procedure, even if the color of the clothes or something in the background would change. Moreover, when the color markers were attached to the user's bodies following the procedure doe attaching he markers specified in the system, the articular angle estimation could be achieved with relatively satisfactorily accuracy.