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A text dithering method based on shading halftone

A halftone and shading technology, applied in the field of pattern recognition, can solve the problems of inconspicuous, inconspicuous, and text interference, and achieve the effect of simple method, flexible implementation and strong practicability.

Active Publication Date: 2021-07-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the shading interferes with the text in the printing industry, causing the text to be inconspicuous and inconspicuous, the present invention provides a text dithering method based on the shading halftone, which can batch process pictures that require shading conversion, and provide a variety of shading pattern

Method used

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  • A text dithering method based on shading halftone

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, a text dithering method based on shading halftone, including the following steps:

[0037] Step S1: Automatically identify the image compression method, single-page or multi-page TIFF format pictures, JPG and PNG and other format pictures on the input image, and then uniformly convert it into a non-true color single-page picture;

[0038] In this embodiment, the step S1 specifically includes:

[0039] Step S11: identify the format of the input picture, if it is in TIFF format, go to step S12; otherwise go to step S2: under normal circumstances, only pictures in TIFF format may have multiple pages;

[0040] Step S12: Identify the compression method of the input picture, extract the compression number of the input picture and compare and analyze the JPEG compression number to determine whether it is a true color picture...

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Abstract

The invention discloses a text dithering method based on shading and halftone. Firstly, the format and compression mode of the input image are identified; secondly, the specific coordinate position requiring shading processing is identified; and then, the shading is dotted and dithered. ;Finally, the proposed method integrates multiple libraries such as LibTiff, OpenCV and GDAL to normalize the image and output it. The invention improves the shortcomings of the traditional algorithm in shading processing, can batch process pictures that need shading conversion, and provides a variety of shading patterns, with more selectivity and relatively high automation standards. It is very suitable for the printing industry to semi-shading Tone processing needs.

Description

technical field [0001] The invention relates to the technical field of pattern recognition, in particular to a text dithering method based on shading and halftone. Background technique [0002] In recent years, the global packaging industry is rapidly developing in the direction of high quality and colorization, setting off a trend of large-format printing equipment and materials, making large-format printing technology an emerging technology that meets the needs of the large-format printing product market and enhances printing competitiveness. system. [0003] For ordinary grayscale continuous shading, although it can emphasize the text, it is easy to confuse the text and it is not easy to recognize. If the gray level of the shading is lowered, it will not be able to emphasize the effect. So at this time, a method is needed to solve this problem. At this time, the dithering algorithm is particularly important. [0004] The dithering algorithm is divided into a random dit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/00G06T7/11
CPCG06T7/11G06T3/04
Inventor 柯逍柯力陈羽中
Owner FUZHOU UNIV