Metoda przetwarzania obrazu termowizyjnego i obrazu wizyjnego we wspólnym systemie cyfrowym

W systemach obserwacyjnych coraz częściej stosuje się zespół kamery termowizyjnej i kamery wideo. Znaczna różnica w standardzie rejestrowanych obrazów sprawia, że ich jednoczesne przetwarzanie jest zadaniem złożonym. W artykule przedstawiono metodę pozwalającą na przetwarzanie obrazu termowizyjnego i obrazu wideo we wspólnym systemie cyfrowym. Zaprezentowane rozwiązanie pozwala na wyświetlanie rejestrowanego obrazu jednocześnie w dwóch różnych standardach wideo. Opracowana metoda została przetestowana i zaimplementowana w sprzęcie.

Multisensory systems are often used in security systems for border surveillance and protection as well as in various military systems like fire control systems. In security systems combined infrared and vision cameras are used to increase effectiveness and detection efficiency. The reason for wide use of infrared cameras in many surveillance and industrial areas is registration of an image in the infrared waveband, which provides new information about the observed process. A traditional vision camera works in the visible spectrum and is applied in security systems for face recognition and identification providing evidence to incidents in the monitored area. A system consisting of infrared and visible cameras allows observing the scene in two wavebands merging advantages of both technologies. The image digital processing system must be designed with consideration about differences between infrared and vision images. Images from different cameras, besides different information in the picture, can also have different resolution, frame rate and data width. The paper presents an approach to integrating a video channel with infrared channel despite of different pixel clock frequencies and different resolutions of the cameras. A method for integration of two different image data streams from visual and infrared cameras in a single digital system is presented. Furthermore, a method for providing display functionality on monitors working in two different video standards is proposed. The presented system has been tested and