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Projection model for flame chemiluminescence tomography based on lens imaging

机译：基于透镜成像的火焰化学发光层析成像投影模型

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摘要

For flame chemiluminescence tomography (FCT) based on lens imaging, the projection model is essential because it formulates the mathematical relation between the flame projections captured by cameras and the chemiluminescence field, and, through this relation, the field is reconstructed. This work proposed the blurry-spot (BS) model, which takes more universal assumptions and has higher accuracy than the widely applied line-of-sight model. By combining the geometrical camera model and the thin-lens equation, the BS model takes into account perspective effect of the camera lens; by combining ray-tracing technique and Monte Carlo simulation, it also considers inhomogeneous distribution of captured radiance on the image plane. Performance of these two models in FCT was numerically compared, and results showed that using the BS model could lead to better reconstruction quality in wider application ranges.
机译：对于基于镜头成像的火焰化学发光层析成像（FCT），投影模型必不可少，因为它建立了相机捕获的火焰投影与化学发光场之间的数学关系，并通过这种关系重建了该场。这项工作提出了模糊点（BS）模型，与广泛应用的视线模型相比，该模型具有更多的通用假设并且具有更高的准确性。通过组合几何相机模型和薄透镜方程，BS模型考虑了相机镜头的透视效果；通过将光线跟踪技术与蒙特卡洛模拟相结合，它还考虑了所捕获辐射在图像平面上的不均匀分布。数值比较了这两种模型在FCT中的性能，结果表明，使用BS模型可以在更宽的应用范围内带来更好的重建质量。

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