Recovering Inner Slices of Layered Translucent Objects by Multi-frequency Illumination
Recovering Inner Slices of Layered Translucent Objects by Multi-frequency Illumination
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通过多频照明恢复分层半透明物体的内部切片
DOI：
10.1109/tpami.2016.2631625
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Yagi Y
中科院分区：
文献类型：
--
作者：
Tanaka K;Mukaigawa Y; Kubo H;Matsushita Y;Yagi Y
本文描述了一种半透明物体内部切片外观的恢复方法。分层半透明对象的外观是所有层的外观总和，其中每个层都由深度相关的点扩散函数（PSF）模糊。通过利用深度相关的PSF的低通特性的差异，我们开发了一种多频率照明方法来获得单独的内部切片的外观。具体地说，通过观察目标对象与不同的空间频率的棋盘格图案照明，我们的方法恢复的外观内切片通过计算。我们研究了由于半透明物体的不均匀性造成的非均匀传输的影响，并在内部切片外观空间平滑的假设下，开发了一种基于逐像素PSF估计的恢复清晰内部切片的方法。我们定量评估所提出的方法的准确性模拟和定性显示忠实恢复使用真实世界的场景。
This paper describes a method for recovering appearance of inner slices of translucent objects. The appearance of a layered translucent object is the summed appearance of all layers, where each layer is blurred by a depth-dependent point spread function (PSF). By exploiting the difference of low-pass characteristics of depth-dependent PSFs, we develop a multi-frequency illumination method for obtaining the appearance of individual inner slices. Specifically, by observing the target object with varying the spatial frequency of checker-pattern illumination, our method recovers the appearance of inner slices via computation. We study the effect of non-uniform transmission due to inhomogeneity of translucent objects and develop a method for recovering clear inner slices based on the pixel-wise PSF estimates under the assumption of spatial smoothness of inner slice appearances. We quantitatively evaluate the accuracy of the proposed method by simulations and qualitatively show faithful recovery using real-world scenes.