Recovery and analysis method for English printed double-sided printing broken file

A recovery and analysis method for an English printed double-sided printing broken file comprises the steps of preprocessing an image, wherein the image needs to be divided for obtaining sample data and mesh generation is carried out on the image with the pixel as the unit; building a two-dimensional matching degree model, wherein xi is defined as a fixed fragment located on the left side when two fragments are spliced, the distance between the median line of one letter and the bottoms of the fragments is defined according to the symmetry of the vertical distance of the letter and the Chinese character in order to obtain a unified metric, the continuous butt joint matching continuity degree of edge black cells of the fragments is defined, and the upward matching direction and the leftward matching direction exist in the two-dimensional matching process; building a two-dimensional black and white butt joint matching model, wherein a transverse butt joint single-row matching degree and a longitudinal butt joint single-column matching degree are defined; optimizing a two-dimensional matching model algorithm; carrying out synthetic clustering of a two-dimensional matching problem and defining a matching degree function; classifying large fragment collections based on characteristics of the obverse side and the reverse side; checking a result based on the characteristics of the obverse side and the reverse side.