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Method for intensifying print quality of half tone image

A printing quality, halftone technology, used in image communication, electrical components, etc., to solve problems such as insufficient sharpness and blurred text edges

Active Publication Date: 2008-02-06
MULLER CAPITAL
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  • Application Information

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Problems solved by technology

[0007] However, using the halftone processing method of error diffusion, although it has a better visual smoothing effect in graphics processing, it will cause other problems. The image of the text, that is, it is easy to produce blurred and not sharp enough at the edge of the text

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  • Method for intensifying print quality of half tone image
  • Method for intensifying print quality of half tone image
  • Method for intensifying print quality of half tone image

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Embodiment Construction

[0044] Since the traditional error diffusion method is used to perform halftone processing on an image containing text, the edges of the text in the resulting processing result are prone to fraying. Therefore, the present invention proposes an improved error diffusion method especially for this defect.

[0045] When doing image processing for graphic enhancement, it is necessary to analyze the characteristics of the printed document first, and the general document usually contains two parts:

[0046] The first category is the parts that have obvious edges with the background, such as text, lines, special symbols, etc., and their colors and gray scales are very simple.

[0047] The second category is the part that has no obvious edge with the background, such as the image part, whose color and grayscale changes are very rich.

[0048]Therefore, according to the above analysis, the key to distinguish these two parts is to judge whether there is a boundary, so as to further sepa...

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Abstract

This invention relates to one method to strengthen color image printing quality, which detects one printing file edge characteristics and its edge direction and then processes image by the error diffusion method to get RGB image after scanning. The filter detects the RGB image edge characteristics and its direction and uses condition meter in the process of diffuse and processes the isolation process according to picture element edge characteristics values, gray values and error integration value to get one slide alignment.

Description

technical field [0001] The present invention relates to a method for enhancing the printing quality of halftone images, in particular to a printing method applied to multifunctional office machines and printers in halftone printing mode. The method analyzes the edge characteristic parameters of documents, and then feeds back to the error diffusion method. Halftone print processing. Background technique [0002] Due to the increasing use of multi-functional office machines and scanners in daily life, more and more attention is paid to the quality and speed of image processing, and the ultimate goal is to restore the output image data to the same as the original image data as much as possible. , and provide modification processing through the algorithm to make the color scale of the output image data smoother, so as to obtain better image reproducibility. [0003] In the general image processing process, the original document is scanned and sampled by the scanning module to f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/58
Inventor 陈政忠蒋政辉
Owner MULLER CAPITAL