Digital surface model fusion method and system for multi-view satellite image

The invention discloses a digital surface model fusion method and system for a multi-view satellite image, and belongs to the field of photogrammetry and remote sensing, and the method comprises the following steps: constructing a corresponding local window for a current fusion position based on each digital surface model of the multi-view satellite image; obtaining a weighting result of the pixels in each local window based on the gray similarity and distance between the pixels in each local window and the pixels in the center of the window; screening and sorting weighted results to obtain a plurality of digital surface model pixel elevation information sequences; performing median extraction on the elevation information sequence of each digital surface model window pixel based on a histogram strategy to obtain a weighted median filtering result, namely a target fusion elevation, and completing digital surface model fusion of the multi-view satellite image; the system is arranged corresponding to the method