Color night vision imaging device and method based on emccd and monochrome ccd

Abstract

The invention discloses a color night vision imaging device and method based on EMCCD and monochrome CCD, which is composed of EMCCD, monochrome CCD, focusing lens, motion control platform, electric filter wheel, PC and target image, etc. The standard color card is used as the target image, and the RGB format image converted from YUV is restored to an image with high color fidelity through white balance, chromaticity adjustment and color calibration, thereby obtaining a mapping color correction matrix; and then shooting the real object , according to the mapping color correction matrix, the color image under low illumination is better restored. The present invention can better restore color information under the premise of not sacrificing the resolution of the reconstructed image in a low-illuminance environment; at the same time, the photons in the near-infrared and visible light bands are used to avoid the noise of EMCCD under low-illuminance as much as possible. big question.

Description

technical field [0001] The invention belongs to color night vision imaging technology, in particular to a color night vision imaging device and method based on EMCCD and monochromatic CCD. Background technique [0002] According to Young-Helmholtz's theory of three primary colors, the perception of color is due to the combined result of the three primary color light stimuli. The basic colors that cannot be decomposed are called primary colors. The primary colors can be synthesized into other colors, but other colors cannot restore the original colors. The three primary colors are usually red, green and blue. [0003] In the red, green, and blue primary color system, the stimulus amounts of red, green, and blue are represented by R, G, and B, respectively. Since it is impossible for the red, green and blue primary colors selected from the actual spectrum to mix all the colors that exist in nature, CIE theoretically assumed in 1931 three primary colors that do not exist in n...

AI Technical Summary

Problems solved by technology

3CCD can use three ICCDs or EMCCDs to obtain corresponding grayscale images through red, green and blue filters, and then fuse them to obtain color images, but the cost is relatively high and it is not portable enough

If you want to use the two together, you must ensure the same field of view. The current optical path system cannot make the two images merge.

In addition, to achieve color imaging, it is not enough to fuse images under different spectra

Current technology cannot calibrate color for accurate color reproduction

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