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Method for raising image printing quality utilizing undistorted compression technology and system thereof

A technology of image printing and compression technology, applied in the direction of image communication, electrical components, etc., can solve the problems of blurred and lost output images, achieve the best printing quality, and improve the quality of printing features.

Inactive Publication Date: 2008-08-20
LITE ON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During the transmission process of the image part, for example, when the image is output to output devices such as printers or fluorescent screens, it may be lost to varying degrees depending on the processing capabilities of each device, often resulting in a certain degree of distortion in the output image. Vague

Method used

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  • Method for raising image printing quality utilizing undistorted compression technology and system thereof
  • Method for raising image printing quality utilizing undistorted compression technology and system thereof
  • Method for raising image printing quality utilizing undistorted compression technology and system thereof

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Embodiment Construction

[0037] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are given in conjunction with the embodiments. The above descriptions about the content of the present invention and the following descriptions of the implementation modes are used to demonstrate and explain the principle of the present invention, and provide further explanations on the patent application scope of the present invention.

[0038] A preferred embodiment of the present invention provides a method for improving image printing quality using lossless compression technology and its architecture, mainly using the detailed features of the prediction error value (Prediction Error) generated in the process of lossless compression encoding or decoding, Then it automatically feeds back and corrects the halftone printing mode of the printer, so as to make the printing graphic processing have better visual smoothness ...

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Abstract

A method for raising quality of image printing by utilizing distortionless compression technique includes obtaining a prediction error value generated for an image pixel at a digital image data in a distortion compression coding course, calculating out an edge intensity character value and an edge directional character value according to obtained prediction error value and feeding two said character values back to a preprinting- processing mode of digital image data.

Description

technical field [0001] The invention relates to a method and system for improving printing quality, in particular to a method and system for improving printing quality by using distortion-free compression technology. Background technique [0002] During the transmission process of the image part, for example, when the image is output to output devices such as printers or fluorescent screens, it may be lost to varying degrees depending on the processing capabilities of each device, often resulting in a certain degree of distortion in the output image. Vague. [0003] If the input image contains a text area and a picture area, it is often necessary to use the method of image-text separation to distinguish the text and pictures in the image, and then process them according to their different characteristics to improve the quality of the output image. For example, due to the RGB color correction problem of the photocoupler, it is not very sensitive to the edge of black text, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/413H04N1/40
Inventor 蒋政辉陈政忠
Owner LITE ON TECH CORP