北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (3): 466-471.doi: 10.13700/j.bh.1001-5965.2014.0466

• 论文 • 上一篇    下一篇

基于多通道投影系统的纹理表面实时绘制技术

陈锋1,2, 刘越1,2, 王涌天1,2   

  1. 1. 北京理工大学 光电学院, 北京 100081;
    2. 北京市混合现实与新型显示工程技术研究中心, 北京 100081
  • 收稿日期:2014-04-28 出版日期:2015-03-20 发布日期:2015-04-02
  • 通讯作者: 刘越(1968—),男,吉林长春人,教授,liuyue@bit.edu.cn,主要研究方向为虚拟现实与增强现实、微弱光电信号处理、摄像机位置和姿态的准确跟踪. E-mail:liuyue@bit.edu.cn
  • 作者简介:陈锋(1986—),男,福建宁德人,博士生,chenfeng4036@163.com
  • 基金资助:
    国家科技支撑计划项目(2012BAH64F02,2013BAH48F01)

Real-time drawing technique for textured surface based on multi-projector system

CHEN Feng1,2, LIU Yue1,2, WANG Yongtian1,2   

  1. 1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;
    2. Beijing Engineering Research Center for Mixed Reality and Advanced Display, Beijing 100081, China
  • Received:2014-04-28 Online:2015-03-20 Published:2015-04-02

摘要: 随着投影机硬件性能的提升与计算机图形图像技术的不断发展,投影技术被应用于越来越多的物体表面以提供更为生动震撼的视觉效果.提出了一种使用多通道投影系统和交互式平板设备对纹理表面进行实时绘制的方法.在分析系统颜色模型的基础上,提出了颜色参数恢复以及投影能量合理分配的算法.通过高效的交互渲染方式保证系统可以实时稳定地将绘制图像无畸变地显示于物体表面.实验结果表明,提出的方法在提高系统补偿精度的同时也提高了系统的亮度范围,在保证交互端与渲染端高度同步的前提下实时地对目标图像进行补偿.

关键词: 光照补偿, 颜色耦合, 移动交互, 多通道投影系统, 实时绘制

Abstract: With the development of the hardware performance of projectors and techniques on computer graphics, projections are used on more common surfaces so as to provide vivid and shocking visual effects. A new method that employed multi-projector system and interactive flat devices to modify the appearance of textured surface in real-time was introduced. On the basis of analyzing the color modeling of the system, an algorithm which recovered radiometric parameters and distributed the projection energy properly was presented. Efficient interactive-rendering pipelines were developed to insure that newly designed patterns could be projected on surface of objects without geometry and radiometric distortions. Experimental results show that the proposed method could improve the system accuracy of compensation while enlarging the system intensity range. Interaction, drawing and rendering modules of the system work synchronously to compensate the target appearances in real-time.

Key words: radiometric compensation, color coupling, mobile interaction, multi-projector system, real-time drawing

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