Printed and handwritten mixed text line extraction system

Abstract

The invention discloses a printed and handwritten mixed text line extraction system, which comprises text block area preprocessing and text line extraction. Through the text block area preprocessing process firstly, a document image containing a printed or handwritten or mixed text is subjected to skew correction, and a text block area is acquired through layout analysis; the text block area is then subjected to connected domain clustering, the belonging text line label is distributed, touching character pixels are subjected to clustering segmentation and the belonging text line label is redistributed; and finally, through the text line label, extraction of a document image text line is realized. The defects of missing extracted stroke information or redundant stroke information introduction caused by inclined touching of the text line in a handwritten text or a printed and handwritten mixed text in the prior art can be overcome, the pixel controllability during the text line extraction process is improved, and the purpose of quickly and efficiently extracting the text line is thus achieved.

Description

technical field [0001] The invention relates to the technical field of text line extraction, and more specifically, relates to a system for extracting text lines mixed with printed and handwritten text. Background technique [0002] Document digital processing is an important field of image processing and pattern recognition research. Its task is to convert paper documents into digital images by taking pictures or scanning, and further analyze, understand and reconstruct the layout of digital document images to make them It becomes a fully editable and retrievable digital document, and has important application prospects in the digitization of photographic documents, notes, archives, bills, manuscript documents, etc. [0003] Segmenting text blocks into independent text lines is an important basic step in document image digitization, which largely affects subsequent tasks such as character recognition, text positioning, and keyword retrieval. Compared with printed text line...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a printed and handwritten mixed text line extraction system, which overcomes the loss of extracted stroke information caused by oblique adhesion of handwritten text or printed and handwritten mixed text lines in the prior art or redundant stroke information, improve the controllability of pixels in the process of text line extraction, so as to achieve the purpose of extracting document image text lines quickly and efficiently

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