CN102043537B - Control method and device for handwriting input - Google Patents

Abstract

The invention discloses a control method of handwriting input, which comprises the following steps: detecting a current input state, and monitoring the vibration condition of the mobile terminal when judging that the current input state is a handwriting input state; acquiring vibration condition parameters in a preset time period, judging whether the vibration condition is abnormal or not, acquiring information of a sampling point and a handwriting input track of handwriting input on a screen when the vibration condition is judged to be abnormal, and correcting the handwriting input track according to the acquired information of the sampling point and the handwriting input track of the handwriting input and the acquired vibration condition parameters in the preset time period. The invention also correspondingly discloses a control device for handwriting input. By applying the invention, the misoperation of the user on the screen is automatically corrected according to the vibration condition of the monitoring terminal and the vibration degree, so that the handwriting recognition efficiency under the vibration condition is improved, and the satisfaction degree of the user is improved.

Description

Handwriting input control method and device

technical field

The invention relates to the communication field, in particular to a handwriting input control method and device.

Background technique

The current handwriting input depends on the system recognizing the trajectory generated when the user touches and writes on the screen of the mobile terminal, and comparing the trajectory information with the character library, that is, if the user can draw a character on the screen Clear, similar to the stroke structure or shape of the Chinese characters or characters to be input, the more likely to find the correct Chinese characters in the font matching process, otherwise it may not be able to correctly find the Chinese characters or characters that the user wants to input . But sometimes the user's handwriting input effect will be affected by many factors, such as the user's environment, or the user's own problems such as user discomfort, hand shaking caused by walking, etc., may affect the accuracy of the touch and write operation. The trajectory drawn by the user on the touch screen is inconsistent with its wishes, and the user cannot input a clear and correct trajectory, which in turn affects the recognition of handwriting. Most of the current solutions are to search for similar characters in the character library through a matching algorithm after sampling the trajectory drawn by the user. The correction of this kind of misoperation is concentrated in the matching process after the trajectory sampling. This method is easily disturbed by the external environment and affects the efficiency of recognition.

Therefore, there is currently a need for a technical solution for handwriting input control in a mobile terminal to solve the above problems.

Contents of the invention

The technical problem to be solved by the present invention is to provide a control method and device for handwriting input, which solves the problem that the terminal vibrates due to the external environment to affect the efficiency of handwriting recognition when the user is inputting handwriting.

In order to solve the above problems, the present invention provides a control method for handwriting input, including: detecting the current input state, when judging that the current input state is a handwriting input state, then monitoring the vibration situation; acquiring the vibration within a preset time period Circumstance parameter, to determine whether the vibration condition is abnormal. When it is judged to be abnormal, collect the sampling points of handwriting input and the information of the handwriting input track on the screen. According to the collected sampling points of handwriting input, the information of the handwriting input track and the preset Vibration parameters within the period of time to correct the handwriting input trajectory.

Further, the above method may further include, judging whether the acquired vibration frequency within the preset time period reaches the preset vibration frequency threshold and/or whether the acquired vibration amplitude within the preset time period reaches the preset amplitude threshold, if so , it is judged that the vibration of the mobile terminal is abnormal. When it is judged to be abnormal, the sampling points of the handwriting input and the information of the handwriting input trajectory on the screen are collected. According to the collected sampling points of the handwriting input, the information of the handwriting input trajectory and the obtained preset Vibration parameters within the period of time to correct the handwriting input trajectory.

Further, the above method may further include, judging whether the acquired vibration frequency within the preset time period exceeds the preset maximum vibration frequency and/or whether the acquired vibration amplitude within the preset time period reaches the preset maximum amplitude, If yes, relevant information will be prompted to the user.

Further, the above method may also include the step of correcting the handwriting input trajectory by the mobile terminal, including: comparing the smoothness and coherence of the handwriting input trajectory, and judging by the coordinates of the sampling points, if the handwriting input If the trajectory is coherent and smooth, the incoherent segments or abnormal protrusions in the entire trajectory are connected by connecting the incoherent segments caused by the vibration conditions, and the abnormal protrusions caused by the vibration conditions are adjusted to a certain extent. Eliminate and correct the handwriting input trajectory.

Further, the above method may further include that the mobile terminal corrects the handwriting input trajectory, which specifically includes: the mobile terminal extracts and stores the information of the handwriting input trajectory of the mobile terminal user's daily habit, and compares the handwriting input trajectory of the daily habit Trajectory information and information of the current handwriting input trajectory, the unmatched handwriting input trajectory in the current handwriting input trajectory is eliminated, and the handwriting input trajectory is corrected.

The present invention also provides a control device for handwriting input, including: a control module, an acquisition module and a correction module, wherein,

The input state detection module is used to detect whether the current input state is a handwriting input state, and if so, send an order to monitor the vibration of the mobile terminal to the vibration monitoring module;

The vibration monitoring module is configured to monitor the vibration of the mobile terminal after receiving a command to monitor the vibration of the mobile terminal, acquire the vibration condition parameters of the mobile terminal within a preset period of time, and determine if the mobile terminal vibrates according to the acquired vibration condition parameters. If the situation is abnormal, then send to the acquisition module the command to collect the sampling points of the handwritten input on the screen and the handwritten input trajectory, and send the obtained vibration parameters in the preset time period to the correction module;

The collection module is used to receive the sampling points of handwriting input on the collection screen and the commands of the handwriting input trajectory, collect the sampling points of the handwriting input on the screen and the information of the handwriting input trajectory, and collect the sampling points of the handwriting input on the collected screen. The information of the point and the handwriting input track is sent to the correction module;

The correction module is configured to receive the collected handwritten input sampling points and information on the handwritten input track sent by the collection module, receive the acquired vibration condition parameters within the preset time period sent by the control module, and according to the collected The sampling points of the handwriting input, the information of the handwriting input trajectory and the acquired vibration parameters within the preset time period are used to correct the handwriting input trajectory.

Further, the above-mentioned device may also include,

The vibration monitoring module acquires the vibration condition parameters of the mobile terminal within a preset time period, and judges whether the vibration condition of the mobile terminal is abnormal according to the acquired vibration condition parameters, specifically including:

The monitoring vibration module judges whether the acquired vibration frequency in the preset time period reaches the preset vibration frequency threshold and/or whether the acquired vibration amplitude in the preset time period reaches the preset amplitude threshold, and if so, judges whether the movement The terminal vibration is abnormal.

Further, the above-mentioned device may further include, the monitoring vibration module, which is also used to judge whether the acquired vibration frequency within the preset time period exceeds the maximum value of the preset vibration frequency and/or the acquired vibration frequency within the preset time period. Whether the amplitude reaches the preset maximum amplitude, and if so, relevant information will be prompted to the user.

Further, the above-mentioned device may further include that the correction module corrects the handwriting input trajectory, specifically including: the correction module compares the smoothness and coherence of the handwriting input trajectory, and judges if If the handwriting input trajectory is a coherent and smooth entire trajectory, incoherent segments or abnormal bulges are connected by connecting the incoherent segments caused by the vibration situation, and the abnormal bulges caused by the vibration situation are determined. The degree of elimination is corrected for the handwriting input trajectory.

Further, the above-mentioned device may further include that the correction module is further configured to extract the stored information of the handwriting input trajectory of the mobile terminal user's daily habits, and compare the information of the handwriting input trajectory of the daily habits with the current handwriting input trajectory. Information, remove the unmatched handwriting input track in the current handwriting input track, and correct the handwriting input track.

Compared with the prior art, applying the present invention, the mobile terminal monitors the vibration of the terminal, and automatically corrects the user's misoperation on the screen according to the degree of vibration, thereby improving the efficiency of handwriting recognition under vibration; and expanding the use of handwriting input The scope also takes full account of the practical difficulties that users may encounter when using handwriting input, and proposes improvement measures to enable users to get a better experience and improve user satisfaction.

Description of drawings

Fig. 1 is the schematic flow chart of the control method of handwriting input of the present invention;

Fig. 2 is a schematic structural diagram of the control device for handwriting input of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The invention mainly monitors the vibration of the terminal through the mobile terminal, and automatically takes measures to correct the misoperation of the user on the screen according to the degree of vibration, thereby improving the efficiency of handwriting recognition under the vibration.

It is worth noting that: the handwriting input in the present invention does not only describe the input by hand, but also includes the input by the stylus, which is essentially the recognition input according to the writing track, and the present invention is not limited thereto.

As shown in Figure 1, the control method of handwriting input of the present invention comprises the following steps:

Step 110, detecting the current input state, when it is judged that the current input state is the handwriting input state, then monitoring the vibration of the mobile terminal;

The mobile terminal can monitor the vibration of the mobile terminal through a motion sensor. For example, the motion sensor uses a gravity accelerator, etc., which is not limited in the present invention.

The vibration of the mobile terminal can be caused by external factors (such as the bumps of the vehicle during the journey), or the vibration of the mobile terminal can be caused by the user's own condition. limited.

Step 120, judging and acquiring the vibration frequency and/or the amplitude within the preset time period, and judging whether the acquired vibration frequency within the preset time period reaches the maximum value of the preset vibration frequency and/or the acquired preset time period Whether the amplitude in reaches the preset maximum amplitude, if yes, then execute step 130, otherwise execute step 140;

It should be noted that the present invention considers that the high-frequency vibration of the mobile terminal is no vibration, for example, vibrations higher than 20 Hz or other vibrations are not regarded as vibrations.

Step 130, the mobile terminal terminates the handwriting input state, and prompts the user that the handwriting input cannot work normally due to external vibration, and ends the process;

If the degree of external vibration is so severe that the recognition rate of handwriting input at this time cannot be effectively improved through compensation and correction, and the consumption of system resources caused by continuous strengthening of correction and compensation measures is already unacceptable for the terminal, at this time, the user should be prompted, Handwriting input may not work due to external vibrations. Users are reminded to take measures to reduce vibrations, or switch to other input methods that are less affected by vibrations to continue operations.

The mobile terminal can prompt the user by displaying the message "handwriting input cannot work normally due to external vibration" on the screen.

Step 140, judging whether the acquired vibration frequency within the preset time period reaches the preset vibration frequency threshold and/or whether the acquired vibration amplitude within the preset time period reaches the preset amplitude threshold, and if so, execute step 150, Otherwise return to step 110;

Wherein, the preset vibration frequency threshold of the vibration frequency is smaller than the preset vibration frequency maximum value of the vibration frequency. The preset amplitude threshold is smaller than the preset maximum amplitude.

Step 150, collect the sampling points of the handwriting input on the screen and the information of the handwriting input trajectory, and correct the handwriting input trajectory according to the collected sampling points of the handwriting input, the information of the handwriting input trajectory and the acquired vibration situation within the preset time period .

The mobile terminal corrects the handwriting input trajectory through the following methods: by comparing the smoothness and coherence of the handwriting input trajectory, and judging by the coordinates of the sampling points if the handwriting input trajectory is a coherent and smooth entire trajectory If there are incoherent segments or abnormal protrusions, etc., the handwriting input trajectory is corrected by connecting the incoherent segments caused by the vibration and removing the abnormal protrusions caused by the vibration to a certain extent.

In the process of correcting the handwriting input trajectory of the above-mentioned mobile terminal, in addition to correcting the handwriting input trajectory in the above-mentioned manner, it is also possible to extract and store the information of the handwriting input trajectory of the mobile terminal user's daily habits and compare the daily habits The information of the handwriting input trajectory and the information of the current handwriting input trajectory will eliminate the unmatched handwriting input trajectory in the current handwriting input trajectory, so as to further improve the efficiency of handwriting recognition, and try to ensure that the user's true intention can be restored in order to be correctly recognized by the mobile terminal. identify.

As shown in Figure 2, the control device of handwriting input of the present invention is used for correcting handwriting input track, has improved the efficiency of handwriting recognition under the situation of vibration, comprises: input state detection module, monitoring vibration module, acquisition module and correction module, wherein ,

The input state detection module is used to detect whether the current input state is a handwriting input state, and if so, send an order to monitor the vibration of the mobile terminal to the vibration monitoring module;

The vibration monitoring module is configured to monitor the vibration of the mobile terminal after receiving a command to monitor the vibration of the mobile terminal, acquire the vibration condition parameters of the mobile terminal within a preset period of time, and determine if the mobile terminal vibrates according to the acquired vibration condition parameters. If the situation is abnormal, then send to the acquisition module the command to collect the sampling points of the handwritten input on the screen and the handwritten input trajectory, and send the obtained vibration parameters in the preset time period to the correction module;

The collection module is used to receive the sampling points of handwriting input on the collection screen and the commands of the handwriting input trajectory, collect the sampling points of the handwriting input on the screen and the information of the handwriting input trajectory, and collect the sampling points of the handwriting input on the collected screen. The information of the point and the handwriting input track is sent to the correction module;

The correction module is configured to receive the collected handwritten input sampling points and information on the handwritten input track sent by the collection module, receive the acquired vibration condition parameters within the preset time period sent by the control module, and according to the collected The sampling points of the handwriting input, the information of the handwriting input trajectory and the acquired vibration parameters within the preset time period are used to correct the handwriting input trajectory.

The monitoring vibration module obtains the vibration condition parameters of the mobile terminal within a preset time period, and judges whether the vibration condition of the mobile terminal is abnormal according to the acquired vibration condition parameters, which means:

The monitoring vibration module judges whether the acquired vibration frequency in the preset time period reaches the preset vibration frequency threshold and/or whether the acquired vibration amplitude in the preset time period reaches the preset amplitude threshold, and if so, judges whether the movement The terminal vibration is abnormal.

The monitoring vibration module is also used to judge whether the acquired vibration frequency within the preset time period exceeds the preset maximum vibration frequency and/or whether the acquired vibration amplitude within the preset time period reaches the preset maximum amplitude, If so, the handwriting input state is terminated, and the user is prompted that the handwriting input cannot work normally due to external vibration.

The correcting of the handwriting input trajectory by the correction module refers to: the correction module compares the smoothness and coherence of the handwriting input trajectory, and judges if the handwriting input trajectory is coherent and smooth through the coordinates of the sampling points. The incoherent segments or abnormal bulges in the entire track are connected by connecting the incoherent segments caused by the vibration, and the abnormal bulges caused by the vibration are eliminated to a certain extent, and the handwriting input track Make corrections.

The correction module is also used to extract the stored information of the handwriting input track of the mobile terminal user's daily habits, compare the information of the handwriting input track of the daily habit with the information of the current handwriting input track, and compare the information of the handwriting input track that is not in the current handwriting input track The matching handwriting input trajectory is eliminated, and the handwriting input trajectory is corrected.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. A control method for handwriting input, comprising: Detect the current input state, when it is judged that the current input state is the handwriting input state, then monitor the vibration through the motion sensor; Obtaining vibration condition parameters within a preset time period, including judging whether the acquired vibration times within a preset time period reach a preset vibration frequency threshold and/or whether the acquired vibration amplitude within a preset time period reaches a preset amplitude threshold value, if yes, then judge whether the vibration condition is abnormal, when it is judged to be abnormal, then collect the sampling points of handwriting input and the information of handwriting input track on the screen, according to the sampling points of collected handwriting input, the information of handwriting input track and the acquisition The parameters of the vibration condition within the preset time period are used to correct the handwriting input trajectory. 2. The control method according to claim 1, characterized in that, Also includes: Judging whether the acquired vibration frequency within the preset time period exceeds the preset maximum vibration frequency and/or whether the acquired vibration amplitude within the preset time period reaches the preset maximum amplitude, and if so, prompting the user with relevant information . 3. The control method according to claim 1, characterized in that, The correction of the handwriting input track specifically includes: By comparing the smoothness and coherence of the handwritten input trajectory, and judging by the coordinates of the sampling points, if the handwritten input trajectory is a coherent and smooth entire trajectory with incoherent segments or abnormal bumps, the pass will be determined by The incoherent fragments caused by the vibration are connected, and the abnormal protrusions caused by the vibration are eliminated to a certain extent, and the handwriting input track is corrected. 4. The control method according to any one of claims 1 to 3, characterized in that, The correction of the handwriting input track specifically includes: The mobile terminal extracts and stores the information of the handwriting input track of the mobile terminal user's daily habits, compares the information of the handwriting input track of the daily habit with the information of the current handwriting input track, and compares the handwriting input track that does not match in the current handwriting input track. Eliminate and correct the handwriting input track. 5. A control device for handwriting input, characterized in that, Including: input state detection module, monitoring vibration module, acquisition module and correction module, wherein, The input state detection module is used to detect whether the current input state is a handwriting input state, and if so, send an order to monitor the vibration of the mobile terminal to the vibration monitoring module; The vibration monitoring module is configured to monitor the vibration of the mobile terminal through a motion sensor after receiving a command to monitor the vibration of the mobile terminal, obtain vibration parameters of the mobile terminal within a preset time period, and judge according to the obtained vibration parameters If the vibration condition of the mobile terminal is abnormal, then send to the collection module the sampling point of the handwriting input on the collection screen and the command of the handwriting input track, and send the vibration condition parameters in the preset time period acquired to the correction module; wherein The vibration monitoring module acquires the vibration condition parameters of the mobile terminal within a preset time period, and judges whether the vibration condition of the mobile terminal is abnormal according to the acquired vibration condition parameters, specifically including: the vibration monitoring module determines whether the vibration condition of the mobile terminal is abnormal within the preset time period acquired. Whether the number of vibrations reaches the preset threshold of vibration times and/or whether the obtained amplitude within the preset time period reaches the preset amplitude threshold, and if so, it is determined that the vibration of the mobile terminal is abnormal; The collection module is used to receive the sampling points of handwriting input on the collection screen and the commands of the handwriting input trajectory, collect the sampling points of the handwriting input on the screen and the information of the handwriting input trajectory, and collect the sampling points of the handwriting input on the collected screen. The information of the point and the handwriting input track is sent to the correction module; The correction module is configured to receive the collected handwritten input sampling points and handwritten input trajectory information sent by the collection module, receive the vibration condition parameters obtained by the monitoring vibration module within a preset time period, and according to The handwriting input trajectory is corrected by collecting the sample points of the handwriting input, the information of the handwriting input trajectory and the obtained vibration parameters within the preset time period. 6. The apparatus of claim 5, wherein The monitoring vibration module is also used to judge whether the acquired vibration frequency within the preset time period exceeds the preset maximum vibration frequency and/or whether the acquired vibration amplitude within the preset time period reaches the preset maximum amplitude, If yes, relevant information will be prompted to the user. 7. The apparatus of claim 5, wherein The correction module corrects the handwriting input trajectory, specifically including: the correction module compares the smoothness and coherence of the handwriting input trajectory, and judges by the coordinates of the sampling points, if the handwriting input trajectory is coherent and smooth The incoherent segments or abnormal bulges in the whole track are connected by connecting the incoherent segments caused by the vibration, and the abnormal bulges caused by the vibration are eliminated to a certain extent, and the handwriting input track Make corrections. 8. The device according to any one of claims 5 to 7, wherein The correction module is also used to extract the stored information of the handwriting input track of the mobile terminal user's daily habits, compare the information of the handwriting input track of the daily habit with the information of the current handwriting input track, and compare the information of the handwriting input track that is not in the current handwriting input track The matching handwriting input trajectory is eliminated, and the handwriting input trajectory is corrected.

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