Real-time rendering system of human figures from arbitrary viewpoints using multiple cameras
Real-time rendering system of human figures from arbitrary viewpoints using multiple cameras
复制标题
使用多相机从任意视点实时绘制人物图像的系统
DOI：
10.1002/scj.1216
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Tachi
中科院分区：
文献类型：
--
作者：
Y. Kunita;M. Inami;T. Maeda;S. Tachi
为了实现远程用户之间的面对面交流，我们开发了一个原型系统，该系统将实时逼真的人物图像投射到虚拟空间中。由于这种用途特别需要实时响应能力，因此原型设备具有以下特殊功能。首先，它使用一种简单的技术，提取由多个相机捕获的图像，并将它们投影到位于虚拟空间中的平面上。由于在使用该技术时不需要获得人体的几何形状，因此所需的计算能力非常小。如果被摄体不在虚拟平面附近，则所生成的图像误差变大。我们通过定义一个固定的范围来表达这一点，在这个范围内，主体应该存在为“等效景深”。此外，在由多个摄像机获得的视频信号中，所实现的系统仅选择图像生成所需的视频信号，并将它们以扫描线为单位输入计算机。通过以这种方式在早期阶段选择性地丢弃信息，即使存在很少的视频捕获板，也可以生成高精度图像而不会劣化。这些特殊功能使我们能够成功地生成实时图像，使用面向消费者的，低成本的个人电脑所提出的技术的有效性。© 2003 Wiley Periodicals，Inc. Syst Comp Jpn，34（11）：91-100，2003;在线发表于Wiley InterScience（www.interscience.wiley.com）。DOI 10.1002/scj.1216
To enable face-to-face communication between remote users, we developed a prototype system that projects real-time realistic images of human figures into a virtual space. Since real-time responsiveness, in particular, is required for this kind of use, the prototype equipment has the following special features. First, it uses a simple technique that extracts images captured by multiple cameras and projects them onto a plane located in the virtual space. Since the geometric shape of the human figure need not be obtained when using this technique, the required computing power is extremely small. The generated image error becomes large if the subject is not in the vicinity of the virtual plane. We formulated this by defining a fixed range within which the subject should exist as the “equivalent depth of field.” Also, among the video signals obtained by the multiple cameras, the implemented system selects only the ones required for image generation and enters them into the computer in terms of scan line units. By selectively discarding information at an early stage in this way, a high-precision image can be generated without degradation even if there are few video-capture boards. These special features enabled us to show the effectiveness of the proposed technique by successfully generating real-time images using a consumer-oriented, low-cost personal computer. © 2003 Wiley Periodicals, Inc. Syst Comp Jpn, 34(11): 91–100, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/scj.1216
关于抑制约束误差的爱因斯坦方程离散格式
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
石井 将大;照屋 唯紀;安田 貴徳;Sabrou Saitoh;H. Kawasaki;星野秀朋，佐藤慧，米田元
通讯作者：
星野秀朋，佐藤慧，米田元