Signal evaluation or image reproduction - generates sensor or video signal from difference of two frequency bands, or from object colour

摘要

The evaluation or image reproduction is carried out by multi-spectral image processing, detected in different wavelength regions and process. From the difference of output received in several frequency bands, or from the object signal in visible systems, a sensor signal or a video image is generated, representing the gradient of the spectral intensity course. The process is carried out by forming the ratio, or the difference of the radiation output measured in several frequency bands. Alternatively a continuous differentiation of the impinging output according to the wavelength, or the frequency, is used. USE/ADVANTAGE - Optical location system, with reliable differentiation between sunshine reflecting radiators and hot punct form radiators.