Signature correction method, system and equipment based on multi-algorithm fusion and storage medium

Abstract

The invention discloses an electronic signature correction technology based on eigenvalue decomposition, which relates to the technical field of electronic signatures and comprises the following steps: acquiring a signature stroke position sequence to establish a covariance matrix; eigenvalue decomposition is carried out on the covariance matrix, coordinates of all stroke points are projected in the eigenvector direction to obtain signature sequence coordinates, and corrected coordinates of the stroke points based on eigenvalue decomposition are obtained; according to the stroke point set convex hull, a minimum enclosing rectangle is obtained, a stroke rotation direction angle is calculated based on the minimum enclosing rectangle, and correction coordinates of the stroke points based on the minimum enclosing rectangle are obtained after rotation according to the direction angle; and performing fusion according to the two correction coordinates to obtain correction position coordinates of the signature strokes. The method can be widely applied to the scene of electronic signature verification.

Description

technical field [0001] The invention relates to the technical field of electronic signatures, in particular to an electronic signature correction method. Background technique [0002] In the verification of electronic signatures, a large number of signature comparisons are involved, but the signature results are skewed by the signer or due to the relationship between the signing equipment or the signature posture, resulting in loss in electronic signature verification and comparison. A lot of stroke feature information and the acquired feature information are inaccurate, leading to a series of problems such as incorrect verification results and decreased accuracy. Therefore, the angle correction of the electronic signature can be said to be an essential part of the preprocessing of the signature comparison. [0003] Publication number CN108256529A, a Chinese invention patent application for a global point cloud description method based on point cloud projection contour sign...

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Problems solved by technology

[0004] Aiming at the problem that the signature in the skewed state is not corrected in the signature verification and comparison process in the prior art, and the recognition and verification accuracy rate is low, the present invention proposes an electronic signature correction method based on eigenvalue decomposition to reduce the angle deviation of the electronic signature. Inaccurate signature comparison results caused by shifting

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