Image fusion method and device and storage medium

The invention discloses an image fusion method and device and a storage medium, and relates to the field of image processing, and the method comprises the steps: obtaining an infrared image and a visible light image of a same target scene; performing brightness fusion on the infrared image and the visible light image to obtain a brightness fusion image; determining a currently required color fusion style, and performing color fusion of a corresponding style on the infrared image and the visible light image based on the color fusion style to obtain a color fusion image; and determining a final fusion image based on the brightness fusion image and the color fusion image. According to the invention, for color fusion, the currently required color fusion style needs to be determined firstly, then color fusion of the corresponding style is performed on the infrared image and the visible light image, and then the final fusion image is obtained by combining the brightness fusion image and the color fusion image deter