Handwriting erasing method and apparatus

Abstract

The invention provides a method and a device for erasing script, and is characterized in that the script is divided into more than one lines, and the determination of the existence of a line in the lines which goes cross an erasing area is taken as a basis on which the decision about whether the script goes cross the erasing area can be made. In the scheme provided by the invention, to find out whether the script crosses the erasing area is converted into the detection about whether the lines following the division of the script cross the erasing area, and if one of the lines goes cross the erasing area, the decision can be made that the script goes cross the erasing area. As only part of the lines of the script need to verified, all that is needed is to verify whether the line crosses the erasing area, and the amount of calculation is correspondingly reduced, so that the script erasing speed is effectively increased, and the script erasing performance is improved. Meanwhile, as not all the points comprising the script are required to be searched and verified, the occupancy of a CPU and the consumption of resources are reduced during the process of erasure.

Description

technical field [0001] The invention relates to the technical field of computer graphics processing, in particular to a method and device for erasing handwriting. Background technique [0002] In the processing of computer graphics, due to misoperation, correction or the purpose of processing each handwriting, it is usually necessary to erase some drawn handwriting. There are usually two ways to erase handwriting in the prior art. : First, erase the point by judging whether the point to be erased is within the erasing area. If it is within the erasing area, the point can be erased. If it is not in the erasing area, it cannot be erased. , secondly, to erase the lines, there are two ways to erase the lines, the first way is the further application of the above point erasing method, which searches all the points on the line to determine whether each point is erasing In the erasure area, and judge whether the line should be erased accordingly, when a point on the line is in the...

AI Technical Summary

Problems solved by technology

[0003] As mentioned above, the handwriting erasing methods in the prior art all need to search all points on the line or all points in the erasing area, which is easy to cause slow search speed, especially for all points on the line. When searching for points and only the last point on the line is located in the erased area, or when searching for all points in the erased area and only the last judged point of the erased area is located on the line, the efficiency Low, slow processing speed. In the case of many lines, the erasing speed will be slow, and the image processing process cannot keep up with the movement of the mouse. In addition, due to the high CPU usage when using the search algorithm, it will also make the image The processing is not smooth enough, and the image screen is stagnant

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