Abstract

For visual measurement at high temperature, one challenge is how to reduce the radiation emitted by the high-temperature components themselves and the influence of hot gas flow on the image quality, which has a significant impact in fields such as aerospace or automotive manufacturing. Owing to the complicated optical imaging environment at high temperature, a new, to the best of our knowledge, image acquisition method of high-temperature components is proposed in combination with single-pixel imaging in this paper. A series of illumination patterns is emitted to the object, and the light waves measured by the single-pixel detector are used to reconstruct the image of the object. Single-pixel imaging of high-temperature objects at different temperatures and different spectral segments has been studied in this paper. The experiment proves that the method presented in this paper can decrease the strong light interference of the high-temperature object’s own radiation light and reduce the halo caused by the high temperature. This study provides a good impetus for the development of single-pixel imaging in the industrial field of high-temperature components by reducing the radiation light.

© 2021 Optical Society of America

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