计算机应用 ›› 2016, Vol. 36 ›› Issue (4): 1137-1140.DOI: 10.11772/j.issn.1001-9081.2016.04.1137

• 虚拟现实与数字媒体 • 上一篇    下一篇

面向视频感知的静电力触觉渲染方法

吴赛文, 陈建, 孙晓颖   

  1. 吉林大学 通信工程学院, 长春 130022
  • 收稿日期:2015-09-06 修回日期:2015-10-29 出版日期:2016-04-10 发布日期:2016-04-08
  • 通讯作者: 孙晓颖
  • 作者简介:吴赛文(1990-),男,河南郑州人,硕士研究生,主要研究方向:虚拟现实、触觉再现; 陈建(1977-),男,山东单县人,副教授,博士,主要研究方向:人机交互、虚拟现实、无线定位; 孙晓颖(1969-),男,吉林公主岭人,教授,博士,主要研究方向:人机交互、触觉再现、无线定位。
  • 基金资助:
    国家863计划项目(2013AA013704)。

Electrostatic force tactile rendering method for video perception

WU Saiwen, CHEN Jian, SUN Xiaoying   

  1. College of Communication Engineering, Jilin University, Changchun Jilin 130022, China
  • Received:2015-09-06 Revised:2015-10-29 Online:2016-04-10 Published:2016-04-08
  • Supported by:
    This work is partially supported by the National High Technology Research and Development Program (863 Program) of China (2013AA013704).

摘要: 针对视觉障碍的人获取视频等数字媒体信息受限的问题, 为扩展视频等数字媒体信息的触觉感知通道,提出一种面向视频感知的静电力触觉渲染方法。首先,采用基于像素点的视频帧处理算法,根据手指触摸位置获取当前视频帧的目标像素点,然后将目标像素点彩色信息从RGB模型转换为HSI模型,利用像素点色调分量来映射静电力激励信号频率参量,结合像素点亮度和饱和度分量来映射静电力激励信号幅度参量,合成静电力触觉激励信号,实现对实时视频的触觉渲染和感知。最后,设计动态色彩感知实验和亮度辨识感知实验,结果表明,该方法可实现对视频中物体信息的触觉感知,动态识别平均正确率达90.6%,色彩辨识平均正确率达69.4%,亮度辨识平均正确率达80.0%,所提方法能有效提取视频中的动态特征信息,增强视频触觉渲染的实时性。

关键词: 虚拟现实, 触觉再现, 视频处理, 静电力, 触觉渲染

Abstract: Since the visually impaired person could not enjoy videos and other digital media thoroughly, in order to extend tactile perception channels for video media, an electrostatic force tactile rendering method for video perception was put forward. Firstly, target pixels of the current video frame were acquired according to the location of the finger, and color information of target pixels were transformed from RGB color model to HSI color model. Then the hue parameter of target pixels was used to map stimuli frequencies of electrostatic force, the intensity and saturation parameters of target pixels were used to map stimuli amplitudes of electrostatic force, and the tactile stimuli signal was composited to render the real-time video. Finally, dynamic color perception experiments and identification of brightness perception experiments were designed. The results show that the proposed method can realize to sense the information of objects in the video, the average accuracy of dynamic identification reaches 90.6%, the average accuracy of color identification reaches 69.4%, and the average accuracy of brightness identification reaches 80.0%. The proposed method can extract the dynamic characteristics of video information effectively and enhance the real-time tactile rendering for video.

Key words: virtual reality, haptic display, video processing, electrostatic force, tactile rendering

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