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An erasing method and a system for writing trajectory

A technology for writing traces and traces, applied in the field of information science, can solve the problems of long operation time, inability to realize real-time display of erasing effect, low efficiency, etc., and achieve a good hand feeling effect

Active Publication Date: 2019-03-01
宁波思骏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the existing handwriting erasing method is mainly used in electronic blackboards, mobile phones and other liquid crystal screens or handwriting devices with other screens, and when performing handwriting erasing on these devices, there are mainly defects as follows: handwriting cannot be generated Objects, but those that can generate handwriting objects for handwriting need to detect handwriting by establishing complex algorithms such as circumscribed rectangles, which makes the operation time long and cannot realize the real-time display of the erasing effect. In addition, the applicable equipment types have relatively large limitations. , and has an inefficient

Method used

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  • An erasing method and a system for writing trajectory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the embodiment of the present invention provides a method for erasing writing tracks, including the following steps:

[0043] Step 1, get the current writing action;

[0044] Step 2, judge whether the current writing action is an erasing action, if so, form the erasing track input this time for storage and perform subsequent steps, otherwise, jump to step 6;

[0045] Step 3, save the original writing track as a png image;

[0046] Step 4, according to the area passed by the erasing track input this time, the original writing track is erased on the png image to obtain the erased png image;

[0047] Step 5, display the erased png image.

[0048] Wherein, step 1 may specifically be: the handwriting device acquires user input and material information currently used for input through the perception of pressure, wherein the user input includes action patterns and / or writing actions, and the writing actions are presented as a two-dimensional plane...

Embodiment 2

[0067] An embodiment of the present invention provides a system for erasing writing traces, including: a writing board, a writing control unit, a storage control unit, a display control unit, and a display screen;

[0068] The writing board is used to obtain the current writing action, including using a stylus or a finger to touch the board and move on the board;

[0069] The writing control unit is used to obtain the operation track obtained by the tablet, touch the material information, and judge the current action type;

[0070] The storage control unit is used to save the original writing track as a png picture, and is also used to obtain the erasing track, and erase the original writing track according to the area passed by the erasing track;

[0071] The display control unit is used to obtain the image updated by the storage control unit and transmit it to the display screen;

[0072] The display screen is used to display the updated image.

[0073] For the erasing met...

specific Embodiment

[0074] Embodiments of the present invention provide a method for erasing writing tracks, which may include the following steps:

[0075] Step 1, the writing device acquires the user's current action.

[0076] The writing device includes a writing board and a writing control unit. The writing board obtains the user's operation actions on the writing device, including touching the board surface with a stylus or a finger, and moving on the board surface. The writing control unit judges the touch material and obtains the movement track of the stylus;

[0077] The writing board adopts an ink screen device, and the handwriting texture and visual experience are similar to the paper-based handwriting experience. Due to the characteristics of no flickering and no light, the ink screen device can protect the user's eyesight and is very suitable for the application in the field of education. The ink screen input device does not have the glass surface of the LCD screen. When writing, it...

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Abstract

The invention discloses an erasing method and a system for writing trajectory, which relate to the field of information science and technology. The method comprises the following steps: when the current action of the user is judged to be an erase action, the new trajectory is stored as a trajectory array object, the original writing trajectory dot array is drawn as a curve and save as a png formatpicture, and then the original writing trajectory picture is erased according to the region through which the input trajectory passes, and the processed writing trajectory is displayed in real time.The method has the advantages that: the writing device has a plurality of working modes, and the erasing method can automatically judge whether the erasing action is the erasing action or not according to the input mode of the user. It can erase part of the existing writing tracks, which conforms to the user's usage habit. It can be used for writing and displaying on the ink screen. The ink screenhas the characteristics of no eye injury and good hand feeling.

Description

technical field [0001] The invention relates to the technical field of information science, in particular to a method and system for erasing writing tracks. Background technique [0002] In the field of education, after-school exercises are an essential part of consolidating knowledge and applying what you have learned. With the development of technology, paperless homework and exercises in the field of education are gradually promoted. [0003] It can greatly improve work efficiency, because unlike LCD screens, ink screen devices will not harm students' eyesight. Therefore, in the field of education, the use of ink screen equipment for homework distribution, practice and correction has been widely promoted, greatly improving work efficiency. [0004] Because the tablet computer has rich functions and is convenient for teacher-student interaction, it is suitable for the teacher to use the tablet computer. In order to improve the efficiency of teachers using tablet compute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0488G06K9/00G06T11/80
CPCG06F3/04883G06T11/80G06V30/32
Inventor 钟鸣邓戬峰
Owner 宁波思骏科技有限公司
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