Abstract: There is provided a system for analyzing images for facial expression recognition, comprising: at least one short wave infrared (SWIR) illumination element that generates SWIR illumination for illumination of a face of a person, at least one SWIR sensor that captures at least one SWIR image of the face under the SWIR illumination, and a non-transitory medium storing program instructions, which, when executed by a processor, cause the processor to analyze the at least one SWIR image for recognizing a facial expression depicted by the face.

Abstract: There is provided a system for imaging of a scene, comprising: at least one short wave infrared (SWIR) illumination element that generates SWIR illumination at a SWIR wavelength range, at least one filter that filters out electromagnetic radiation at wavelengths which are mostly non-absorbed by water vapor in air depicted in the scene, and at least one SWIR sensor that captures the SWIR illumination of the SWIR wavelength range which is passed by the at least one filter and generates at least one SWIR image of the scene.

Abstract: Disclosed herein are methods and system for determining whether a user is wearing a mask, comprising receiving one or more infrared images depicting the user's face in one or more infrared spectral ranges and one or more visible light images depicting the user's face in visible light spectral range, registering the infrared image(s) to the visible light image(s), computing luminance values of a plurality of pixels relating to the user's face in the visible light image(s), computing infrared reflectiveness values of corresponding pixels in the registered infrared light image(s), computing, for each of the pixels, a difference between the luminance value and the infrared reflectiveness value and determining the user is genuine and not wearing a mask in case an aggregated difference aggregating the difference values of the pixels relating to the user's face exceeds a certain value.

Abstract: Disclosed herein are methods and system for determining whether a user is wearing a mask, comprising receiving one or more infrared images depicting the user's face in one or more infrared spectral ranges and one or more visible light images depicting the user's face in visible light spectral range, registering the infrared image(s) to the visible light image(s), computing luminance values of a plurality of pixels relating to the user's face in the visible light image(s), computing infrared reflectiveness values of corresponding pixels in the registered infrared light image(s), computing, for each of the pixels, a difference between the luminance value and the infrared reflectiveness value and determining the user is genuine and not wearing a mask in case an aggregated difference aggregating the difference values of the pixels relating to the user's face exceeds a certain value.