Abstract: A system for measuring temperature of one or more subjects within a scene including a reference object having an unknown emissivity, having an ambient temperature, the system comprising: a visible spectrum camera capable of acquiring images of the scene comprising (a) at least a Region of Interest (RoI) of each of the subjects, and (b) the reference object; a thermal image sensor capable of acquiring images of the scene comprising (a) at least the RoI of each of the subjects, and (b) the reference object; and a processing circuitry configured to: obtain (a) a visible spectrum image captured by the visible spectrum camera, and (b) a thermal image captured by the thermal image sensor, and (c) an indication of a scene ambient temperature within the scene; register the visible spectrum image and the thermal image onto a common coordinate system; identify (a) RoI pixels, on the common coordinate system, of the RoIs of the subjects within the visible spectrum image, (b) reference object pixels, on the common coordi

Abstract: A system for measuring temperature of one or more subjects within a scene including a reference object having an unknown emissivity, having an ambient temperature, the system comprising: a visible spectrum camera capable of acquiring images of the scene comprising (a) at least a Region of Interest (RoI) of each of the subjects, and (b) the reference object; a thermal image sensor capable of acquiring images of the scene comprising (a) at least the RoI of each of the subjects, and (b) the reference object; and a processing circuitry configured to: obtain (a) a visible spectrum image captured by the visible spectrum camera, and (b) a thermal image captured by the thermal image sensor, and (c) an indication of a scene ambient temperature within the scene; register the visible spectrum image and the thermal image onto a common coordinate system; identify (a) RoI pixels, on the common coordinate system, of the RoIs of the subjects within the visible spectrum image, (b) reference object pixels, on the common coordi

Abstract: A mechanical device for tilting an optical element consisting of one or more actuators attached to a support element supporting an optical filter or other optical device is provided. In one preferred embodiment of the present invention, a rigid support element is free to move at one end, or is attached by a hinge at one end to an actuator while movement of its second end is restrained, resulting in tilting of the support element when the actuator is activated. In another embodiment of the present invention, a deformable support element is rigidly attached to the actuator at one end while movement of the second end of the support element is restrained, resulting in bending of the support element and tilting of the optical element upon movement of the actuator. In yet another embodiment, a deformable support element is rigidly attached to two actuators, resulting in bending of the support element when the actuators are activated.