Device and method of acquiring night vision true color image

Abstract

The invention provides a device for acquiring a night vision true color image, which mainly comprises an objective lens, a three-primary-color filter, an image intensifier, a fiber coupler (or an optical repeater), a CMOS or CCD image sensor, an FPGA chip, a peripheral circuit and a controller. The invention also discloses a method of acquiring the true color image by using the above night vision true color image acquiring device. The filter is used for filtering light reflected by a target, the image intensifier is used for amplifying and multiplying single-color light after being filtered, the acquired three-primary-color image is fused to a color image, and color image acquisition in a night vision condition is realized. Compared with the prior art, the night vision true color image acquiring device has a simple structure, no optical calibration is needed in the case of use and operation, the final fused image is accurate in color matching, and the device is extremely suitable for being used in equipment such as a night vision device.

Description

technical field [0001] The invention belongs to the field of night vision imaging technology, in particular to color imaging technology under night vision conditions, in particular to a night vision true color image acquisition device and method. Background technique [0002] Under night vision conditions, due to the low illuminance, the existing color image sensor can 0 In the case of lx order of magnitude, it will not be possible to form a color image due to insufficient illumination and other reasons, but only a grayscale image, or even a dark image. If you want to form a color image, you must use means such as supplementary light, such as using a flash. This is applicable in general occasions (for example, a building surveillance camera adopts infrared light illumination), but in the military field, it will cause the exposure of the observer's position, so it is not feasible. [0003] At this stage, there are also color night vision imaging technologies used under cert...

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Problems solved by technology

[0008] The present invention proposes a night vision true color image acquisition device and method in order to solve the defect that it is difficult to acquire true color images under night vision conditions in the prior art.

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