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Method and device for identifying and editing freehand sketch

A recognition method and a technology of a recognition device, which are applied in the field of hand-drawn sketch recognition and editing, can solve the problems of limited shape recognition and inability to recognize, and achieve the effect of editing operations

Inactive Publication Date: 2015-03-18
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, some inventions propose a system and method for detecting hand-drawn objects input with ink, but the shapes it can recognize are limited, and some complex hand-drawn sketches are still unrecognizable

Method used

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  • Method and device for identifying and editing freehand sketch
  • Method and device for identifying and editing freehand sketch
  • Method and device for identifying and editing freehand sketch

Examples

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Embodiment Construction

[0068] In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0069] When performing hand-drawn sketch recognition in this application, the user's input sketch appears as a number of strokes composed of a sequence of sampling points between the user's pen-down and pen-lifting. Strokes are the most basic elements of graphics. For the recognition of hand-drawn sketches, the processing can be started after each stroke is input by the user, or all strokes that have been input can be processed after a preset time period. Either way, the processing is performed in units of one stroke, and the processing flow for each stroke is the same, and the following description takes the processing flow of one stroke as an example to illustrate. Wherein, the stroke being processed is called the current processing track.

[0070] figure 1 ...

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Abstract

The invention discloses a method for identifying a freehand sketch. The method comprises the steps of acquiring a current processing track inputted by a user, and carrying out preprocessing on the current processing track; detecting valid angular points according to a preprocessing result; segmenting the preprocessing result by utilizing the valid angular points, carrying out curve fitting on each section of track, and identifying a geometric shape of the current track according to all fitting results; storing the processing result of the current processing track as at least one geometry. The invention also discloses a method for editing the freehand sketch as well as a device for identifying and editing the freehand sketch.

Description

technical field [0001] The present application relates to trajectory recognition technology on mobile terminals, and in particular to a method and device for hand-drawn sketch recognition and editing. Background technique [0002] In recent years, with the increasing popularity of various mobile terminal devices (notebook computers, mobile phones, tablet computers and personal digital assistants (PDAs), handwriting has become an increasingly popular method of handwriting input. In order to obtain the information that the user wants to input more accurately, the selected handwriting recognition method needs to have a high recognition accuracy. Currently, handwriting recognition is mainly used to recognize characters, such as handwriting input methods of mobile terminals and handwriting tablets. For hand-drawn graphic input other than characters, such as flow charts, tables, etc., you need to edit the pre-provided graphic templates to make input (such as the method used by Vi...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F9/44G06K9/40
CPCG06T11/80
Inventor 吴金钟常元章王长威陈又新
Owner BEIJING SAMSUNG TELECOM R&D CENT
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