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3D Reconstruction of flame temperature field based on lightweight residual network with spatial attention mechanism

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Abstract

Flame temperature field measurement has always been a key topic in combustion research, which is of great significance for combustion state diagnosis and fuel combustion optimization. Deep learning technology exploits its superior nonlinear ability to rapidly reconstruct the three-dimensional (3D) temperature field of flames from flame light-field images. However, existing algorithms have problems with complex networks, poor noise resistance and low reconstruction accuracy. This paper proposes a lightweight 3D flame temperature field reconstruction algorithm based on an improved MobileNet that combines residuals and spatial attention mechanisms. This method basically achieves a balance between low complexity and high accuracy and has good noise resistance performance. Simulation results show that the average relative error of temperature field reconstruction on the noise-free unimodal flame dataset is only 0.022%, and its computational complexity is only one-tenth of the existing CNN. The noise simulation experiment shows that this method has good noise resistance performance. The maximum relative error and the average relative error at Gaussian white noise standard deviation σ = 0.15 are only 2.91% and 0.27%, respectively.

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Data availability

The dataset and codes utilized in this paper are currently not publicly accessible; however, interested parties may acquire them by contacting the authors through reasona-ble requests.

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Funding

This work was supported by the National Natural Science Foundation of China (Grant No.51874264, Grant No.52076200).

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Contributions

LS and JS conducted preliminary research and designed the method. BH and MK provided technical guidance. LS and JS carried out experi ments. JS wrote the manuscript. LS and JS revised the manuscript. All authors reviewed the final version of the manuscript.

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Correspondence to Ming Kong.

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Shan, L., Sun, J., Hong, B. et al. 3D Reconstruction of flame temperature field based on lightweight residual network with spatial attention mechanism. SIViP 18, 6661–6670 (2024). https://doi.org/10.1007/s11760-024-03342-7

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