MCPS: A multispectral composite projection stealth technology for invisibility under multispectral camera detection

In current visible light stealth technologies, camouflage and projection-based stealth techniques are commonly employed to blend the target into the background, achieving visual consistency when observed through a visible light camera. Although the camouflage target has the same color as the background, their spectral characteristics are inconsistent, making it easy to distinguish the target from the background by a multispectral camera. To address these problems, we propose an advanced optical spectral stealth technology based on multispectral composite projection. The proposed method employs a visible light spectrum sensing algorithm to calculate the most informative spectral bands of the target. Subsequently, an adaptive multispectral solution and modulation algorithm is used to adjust the projection spectrum of the target to ensure spectral consistency with the background. A multispectral composite projection system is then used to project the modulated spectrum onto the scene. Finally, a spectral reflectance matching algorithm adjusts the projection brightness of the target, ensuring both spectral and intensity consistency between the target and the background. Experimental results demonstrate the proposed method achieves effective stealth across different environments and can successfully resist detection by multispectral cameras. The proposed method is applicable to the concealment and protection of important targets.