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Hyperspectral Light Field Stereo Matching

机译:高光谱光场立体匹配

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摘要

In this paper, we describe how scene depth can be extracted using a hyperspectral light field capture (H-LF) system. Our H-LF system consists of a 5 x 6 array of cameras, with each camera sampling a different narrow band in the visible spectrum. There are two parts to extracting scene depth. The first part is our novel cross-spectral pairwise matching technique, which involves a new spectral-invariant feature descriptor and its companion matching metric we call bidirectional weighted normalized cross correlation (BWNCC). The second part, namely, H-LF stereo matching, uses a combination of spectral-dependent correspondence and defocus cues. These two new cost terms are integrated into a Markov Random Field (MRF) for disparity estimation. Experiments on synthetic and real H-LF data show that our approach can produce high-quality disparity maps. We also show that these results can be used to produce the complete plenoptic cube in addition to synthesizing all-focus and defocused color images under different sensor spectral responses.
机译:在本文中,我们描述了如何使用高光谱光场捕获(H-LF)系统提取场景深度。我们的H-LF系统由5个x 6个摄像头阵列组成,每个摄像头在可见光谱中采样一个不同的窄带。提取场景深度分为两个部分。第一部分是我们新颖的互谱成对匹配技术,其中涉及一种新的谱不变特征描述符及其伴随匹配度量,我们称之为双向加权归一化互相关(BWNCC)。第二部分,即H-LF立体声匹配,结合了频谱相关的对应关系和散焦提示。这两个新的成本项被集成到马尔可夫随机场(MRF)中以进行视差估计。对合成和真实H-LF数据进行的实验表明,我们的方法可以生成高质量的视差图。我们还表明,除了在不同传感器光谱响应下合成全焦点和散焦彩色图像外,这些结果还可用于产生完整的全光立方。

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