Image fusion method and system based on IHS transformation and wavelet transformation

The invention relates to the technical field of image processing, and discloses an image fusion method based on IHS transformation and wavelet transformation, which comprises the following steps: carrying out IHS transformation on a registered visible light image to obtain an I component, an H component and an S component, and respectively carrying out wavelet transformation on the I component and an infrared image after image enhancement; fusing the transformed high-frequency sub-band and the transformed low-frequency sub-band by adopting corresponding fusion rules, performing layer-by-layer wavelet reconstruction on the fused low-frequency part and high-frequency part to obtain a new Inew component, and performing IHS inverse transformation on the Inew component, the chroma H component and the saturation S component to obtain a fusion result, the synthetic image retains the significant features of the source image in different frequency domains, improves the correlation of the image, and reduces the conditi