Denoising method and denoising device for linear interference

Abstract

The invention discloses a denoising method and a denoising device for linear interference, and relates to the technical field of computers. A specific embodiment of the method includes: preprocessing the original image to obtain a binarized image; determining the coordinate interval corresponding to each character in the binarized image; determining the corresponding first and last points of the character according to the coordinate interval corresponding to the character The coordinates of the points; solve the noise curve expression according to the coordinates of the first end point and the end point corresponding to each character; use the noise curve expression to predict and remove the noise. This embodiment can accurately solve the noise curve expression in sections, better fit the noise curve, realize more accurate character recognition, and further improve the recognition success rate of the entire verification code.

Description

technical field

[0001] The invention relates to the technical field of computers, in particular to a denoising method and a denoising device for linear interference. Background technique

[0002] With the rise of crawler technology, more and more businesses are beginning to rely on the data crawling capabilities of web crawlers. For security and traffic control considerations, various websites have also enabled verification code verification to block web crawlers. With the rapid development of image recognition technology, the patterns of verification codes are also gradually expanded and refurbished, from the earliest characters are correct, the size is consistent, the background is clean, and the background is discolored in the later stage. Various noises are added, and the character rotation is blurred and deformed. It can be said that , image recognition is the key to open this door, and image denoising processing is a key step in the pre-order operation of image recogni...

Images