A focus measure for light field rendering
A focus measure for light field rendering
复制标题
DOI：
10.1109/icip.2004.1421604
复制
发表时间：
2004-10
期刊：
影响因子：
--
通讯作者：
Keita Takahashi;Akira Kubota;T. Naemura
中科院分区：
文献类型：
--
作者：
Keita Takahashi;Akira Kubota;T. Naemura
光场绘制是从一组多视点图像合成自由视点图像的基本方法。在最简单的情况下，场景结构近似于一个简单的平面：焦平面。这种近似导致合成图像上的焦点效应，其中聚焦深度由焦平面确定。一个严重的问题是，在大多数实际情况下，聚焦深度的范围太小。在本文中，我们提出了一个焦点测量，专门用于合成图像的光场渲染。当一组不同聚焦的图像在一个给定的视点生成时，建议的焦点测量使我们能够获得深度图和全聚焦图像。我们的方法有一些显着的差异，从其他相关的技术，如深度从立体声和深度从焦点的方法。实验结果表明，该方法有效地提高了最终合成图像的峰值信噪比。
Light field rendering is a fundamental method for synthesizing free-viewpoint images from a set of multiviewpoint images. In the simplest case, the scene structure is approximated by a simple plane: a focal plane. This approximation leads to focus-like effects on synthetic images where the focused depth is determined by the focal plane. A serious problem is that the range of the focused depth is too small in most practical cases. In this paper, we propose a focus measure that is specialized for synthetic images by light field rendering. When a set of differently-focused images is generated at a given viewpoint, the proposed focus measure enables us to obtain a depth map and an all in-focus image. Our approach has some remarkable differences from other related techniques, such as depth-from-stereo and depth-from-focus methods. Experimental results show that the proposed method effectively enhances PSNR of the final synthetic images.