Layered light-field rendering with focus measurement
Layered light-field rendering with focus measurement
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DOI：
10.1016/j.image.2006.03.001
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发表时间：
2006-07-01
影响因子：
3.5
通讯作者：
Naemura, Takeshi
中科院分区：
文献类型：
--
作者：
Takahashi, Keita;Naemura, Takeshi
本文介绍了一种新的基于图像的绘制方法，该方法使用来自相机阵列的输入并实时合成高质量的自由视点图像。如果预先校准，则可以粗略地布置输入相机。我们的方法使用一组深度层来处理具有大深度范围的场景，但不需要场景几何的先验知识。相反，在动态过程中，通过使用我们的焦点测量方案，最佳深度层会自动分配给合成图像上的每个像素。我们实现了渲染方法，并在一个商品PC上实现了几乎交互式的帧速率。本文还讨论了空间域和频率域的聚焦测量方案。在空间域中的讨论是实际的，因为它可以适用于任意相机阵列。另一方面，频域分析在理论上是有趣的，因为它证明了信号处理理论适用于深度分配问题。(c)2006 Elsevier B.V.保留所有权利。
This paper introduces a new image-based rendering method that uses input from an array of cameras and synthesizes high-quality free-viewpoint images in real-time. The input cameras can be roughly arranged, if they are calibrated in advance. Our method uses a set of depth layers to deal with scenes with large depth ranges, but does not require prior knowledge of the scene geometry. Instead, during the on-the-fly process, the optimal depth layer is automatically assigned to each pixel on the synthesized image by using ourfocus measurement scheme. We implemented the rendering method and achieved nearly interactive frame rates on a commodity PC. This paper also discusses the focus measurement scheme in both spatial and frequency domains. The discussion in the spatial domain is practical since it can be applied for arbitrary camera arrays. On the other hand, the frequency domain analysis is theoretically interesting since it proves that a signal-processing theory is applicable to the depth assignment problem. (c) 2006 Elsevier B.V. All rights reserved.