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Quick vector linetype erasing method

A linear and vector technology, applied in the field of image processing, can solve problems such as low efficiency and achieve the effect of accurate erasing

Active Publication Date: 2014-02-12
JIANGSU WAFA INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is: when erasing characters or lines in the existing capacitive screen, each pixel needs to be erased, which is inefficient

Method used

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  • Quick vector linetype erasing method
  • Quick vector linetype erasing method
  • Quick vector linetype erasing method

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Experimental program
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Embodiment Construction

[0022] The present invention erases the displayed line type according to the erasing path, including the following steps, such as figure 1 :

[0023] 1) Traversing all the vector line types in the screen in turn, for any one of the vector line types, it will appear as a polyline segment after zooming in, and the pixel points at the turn of the polyline segment will be used as feature points, and the distance between any two feature points will be equal Division, the division point is the key point, and the feature point is also the key point;

[0024] 2) Perform an erasing action: make the erasing path intersect with the line to be erased at least once;

[0025] 3) After the erasing action is completed, judge the validity of the key points on the line to be erased. The key points and the pixels surrounding the key points are used as a judgment point, and the alpha value of each pixel of the judgment point is judged. If the alpha value of any pixel in the judgment point is no...

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Abstract

The invention discloses a quick vector linetype erasing method. According to the method, a displayed linetype is erased according to an erasing path, only a to-be-erased linetype through which the path passes is erased, the opaqueness of pixels of the to-be-erased linetype is calculated, the effectiveness of the to-be-erased linetype is judged, and whether display of the whole linetype is deleted is further judged, so that one-step quick erasing is realized. Words and lines are erased by adopting a line interweaving point identification method aiming at the vector linetype, and the words and line types can be rapidly and accurately erased.

Description

technical field [0001] The invention belongs to the technical field of image processing, relates to fast erasing of vector line patterns, and relates to a fast erasing method of vector line patterns. Background technique [0002] At present, in various electronic display devices, such as computers, tablets and other operating environments, the erasing form of characters and lines is mainly based on the pixel erasing method. This erasing method is inefficient, and erasing a character or line requires The erasing action is repeated, and the corresponding pixels can be erased step by step. The erasing speed is slow, and it is easy to omit when erasing a lot of content. Contents of the invention [0003] The problem to be solved by the present invention is: when erasing characters or lines in the existing capacitive screen, it is necessary to perform an erasing operation on each pixel, which is inefficient. [0004] The technical scheme of the present invention is: a kind of ...

Claims

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Application Information

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IPC IPC(8): G11C16/10
Inventor 王进
Owner JIANGSU WAFA INFORMATION TECH
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