Twilight Spectrum Of Single-channel Color Night Vision Technology

Because the imaging mechanism of the dual-channel system is different, so before fusion we have to registration the two images, it is a technique problem and it affects the development of night vision system. The single channel dual-band low light level color night vision technique can solve the problem of dual-channel.The paper reviews the works of the past fifteen years. They are dual-channel color night vision of dual-band low light level, low level light and infrared light, low light level and ultraviolet and so on. The paper researches the optimal spectrum matching technique according to the characteristics of low light level image and the reflective spectral characteristics of scenery in night. The paper researches to obtain dual-band low light level images by raster filter. The paper analyses the principle of the tuned filter and combined it with the single-channel system to realize color night vision. The paper finds appropriate arithmetic to realize fusion and color night vision of low light level images. The paper innovates a single-channel low light level imaging system based on broad band tuned filter, the key technology of this system is coupling a tuned filter on the imaging mechanism. The single-channel low light level imaging system based on broad band tuned filter is further deepening of the color night vision imaging.