期刊
OPTICS AND LASERS IN ENGINEERING
卷 142, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2021.106596
关键词
Grayscale image; Infrared thermography; Image interpolation; Infrared radiance; Smoke transmittance
类别
资金
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology
- National Natural Science Foundation of China [11672041]
In a smoke environment, target recognition is hindered by the transmittance of smoke. This study proposes a numerical method to calculate infrared smoke transmittance and presents a solution through a test example. The new method eliminates anomalies and provides accurate solutions for engineering applications.
In a smoke environment, target recognition is a pivotal problem faced by imaging-guided weapons and reconnaissance equipment. In fact, the transmittance of smoke is the main hindrance to recognition. In this study, a numerical method for extracting pixel radiance to calculate infrared (IR) smoke transmittance is proposed. First, a description of the field test and the equation governing the transmittance of IR smoke are introduced. Next, a method for extracting pixel radiance from an IR image is presented; specifically, a scheme that uses a bicubic interpolation algorithm, to calculate the radiance of the background pixels is presented. Finally, the steps of the method are illustrated through a test example. The results show that the new method eliminates the anomaly of the transmittance value being less than 0 or greater than 1, and in addition, yields sufficiently accurate solutions for engineering applications.
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