The application discloses a kind of based on optimization's guiding filter
image fusion change detection method and device, method includes: by extreme minimum scale difference operator,
pixel value difference value is to the picture of same scene different phase, obtains difference map;Using the way of guiding filter, difference map is fused on global scale, to obtain the optimal difference map;Mean filter is used to
phase map I1 and I2, and the base layer difference map corresponding to each difference map is obtained, and the optimized brightness
saliency map F1 and F2 are obtained by pca fusion as the image of generating
saliency map, according to the principle of maximum saliency to determine weight map;Weight map is regularized for double-scale difference map reconstruction, and the final difference map is obtained;In clustering segmentation stage, by introducing soft
threshold function, the final difference map is further processed, to suppress existing abnormal
noise.The device includes: processor and memory.