1. A full-automatic detection method for static characteristic information in a dynamic image, wherein the full-automatic detection method for static characteristic information in a dynamic image at least comprises: (1) judging whether an pixel is a static information pixel or not by comparing the inter-frame difference with a predetermined threshold in a predetermined first region and second region; the judging process is stopped when the pixels in the non overlap region of the first and second region is judged as non-static information points; and (2) determining static characteristic information in the dynamic image based on the static information points in the first region.