Single-camera stereoscopic 3D multiplexed structured image capture for quantitative fuel-to-air ratio mapping
Single-camera stereoscopic 3D multiplexed structured image capture for quantitative fuel-to-air ratio mapping
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DOI：
10.1016/j.optlaseng.2021.106945
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发表时间：
2022
影响因子：
4.6
通讯作者：
Walker McCord;Cary D. Smith;Zhilian Zhang
中科院分区：
文献类型：
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作者：
Walker McCord;Cary D. Smith;Zhilian Zhang
演示了一种基于单摄像头三维多路结构化图像捕获（3D-MUSIC）的立体成像系统，该系统可以在标准大气条件下获得甲烷-空气本生火焰的三维燃料-空气比（FAR）图。C2* (500nm)和CH* (430nm)发射的图像通过两个光路进行空间调制和捕获，并在相机上合并成单个图像。C2* / CH*比值在空间频域通过低通滤波计算恢复，并与火焰的FAR图呈线性趋势。每个通道独特的FAR图被融合成一个视距三维FAR图，通过三角测量每个通道角度的点。作为一种成像技术，3D MUSIC可以在不需要任何特殊照明的情况下，通过空间调制和恢复在一台相机中获得多光谱多视图3D图像。它可以扩展到燃烧，生物医学和其他关键诊断的应用。
A single-camera three-dimensional Multiplexed Structured Image Capture (3D-MUSIC) based stereoscopic imaging system is demonstrated to obtain a three-dimensional fuel-to-air ratio (FAR) map of a methane-air Bunsen flame at standard atmosphere conditions. Images of the C2* (500nm) and CH* (430nm) emissions are spatially modulated and captured through two optical paths and combined into a single image on the camera. The C2* / CH* ratio is computationally recovered by low-pass filtering in the spatial frequency domain and exhibits a linear trend to a FAR map of the flame. Each channel's unique FAR map is fused to generate a line-of-sight three-dimensional FAR map by triangulating points from each channel's perspective. As an imaging technique, the 3D MUSIC is capable of obtaining multi-spectral multi-view 3D images using spatial modulation and recovery in one camera without any special illumination. It may be extended for applications in combustion, biomedical, and other key diagnostics.