Local image region-based fragile reversible watermarking method

The invention discloses a local image region-based fragile reversible watermarking method. The method comprises the specific steps of (1) sampling a feature image; (2) extracting an initial feature point sequence; (3) calculating an expansion feature point sequence; (4) obtaining a scale feature point sequence; (5) obtaining a non-cross-border feature circle sequence; (6) obtaining a non-overlapped feature circle sequence; (7) embedding a watermark; (8) sampling the feature image; (9) extracting the initial feature point sequence; (10) calculating the expansion feature point sequence; (11) obtaining the scale feature point sequence; (12) obtaining the non-cross-border feature circle sequence; (13) obtaining the non-overlapped feature circle sequence; and (14) extracting the watermark. According to the method, feature points are selected by utilizing a Harris-Laplace operator to determine a region of interest, and the size of the region of interest is determined by adjusting a radius scale factor, so that the