Pixel-level infrared and low-light image fusion method, storage medium and device

The invention relates to a pixel-level infrared and low-light image fusion method, a storage medium and a device, and belongs to the technical field of image processing. The method comprises the following steps of: clearly imaging the same target scene by using an infrared imaging system and a low-light imaging system respectively; performing image separation on the infrared original image and the low-light original image to obtain background layer image information and detail layer image information of the two images; calculating a sudden recognition intensity parameter of a key observation target of the infrared image; calculating the background layer information of a final image by using the background layer information of the infrared image and the low-light-level image according to the fusion proportion of the input infrared image and the low-light-level image; using the infrared image detail layer information, the low-light image detail layer information and the low-light brightness coefficient to calcu