CN114546175A - Character drawing method and system of electronic whiteboard, electronic whiteboard and storage medium - Google Patents
Character drawing method and system of electronic whiteboard, electronic whiteboard and storage medium Download PDFInfo
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- CN114546175A CN114546175A CN202210189443.4A CN202210189443A CN114546175A CN 114546175 A CN114546175 A CN 114546175A CN 202210189443 A CN202210189443 A CN 202210189443A CN 114546175 A CN114546175 A CN 114546175A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000009877 rendering Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 description 9
- 238000012015 optical character recognition Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The application discloses a method and a system for drawing characters on an electronic whiteboard, the electronic whiteboard and a storage medium, which relate to the electronic technology and comprise the following steps: acquiring a touch event; updating the vertex coordinates of the current writing area according to the touch event; recognizing characters in the writing area as characters to be drawn; determining the number of characters in the current writing area; determining the font size of the character to be drawn and the position information of the character to be drawn according to the current character number and the vertex coordinate information of the writing area; and drawing the character to be drawn according to the font size and the position information. Through the scheme, the user can freely write on the board according to the actual situation without the limitation of a specific text format, and can automatically generate standard fonts to avoid the situation that the handwritten content is difficult to read.
Description
Technical Field
The present application relates to electronic technologies, and in particular, to a method and a system for drawing characters on an electronic whiteboard, and a storage medium.
Background
At present, the electronic whiteboard is widely applied to the fields of teaching, meetings and the like, and due to the installation characteristics of the electronic whiteboard, handwriting input becomes an important input mode of the electronic whiteboard. At present, the handwriting input mode is divided into two modes, one is an input method mode, and the other is a drawing board mode. For the input method form, after a user writes in a writing area in a certain range, characters are filled in a text and input according to a specific font, size and paragraph mode, and the user is equivalent to inputting the characters into a document. In the drawing board form, the drawing board usually records only the touch track input by the user, and records the writing of the user in a graphical manner. In this way, the user can flexibly board the book without being restricted by the format of the document.
However, for the input mode in the sketchpad form, the handwriting of the user is sloppy, which leads to confusion of the writing and hinders the reading of the user.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a character drawing method and system of an electronic whiteboard, the electronic whiteboard and a storage medium, so as to automatically optimize the handwriting board book.
On one hand, the embodiment of the application provides a method for drawing characters on an electronic whiteboard, which comprises the following steps:
acquiring a touch event;
updating the vertex coordinates of a current writing area according to the touch event, wherein the writing area is a rectangle surrounding a plurality of tracks classified as a writing area;
identifying characters in the writing area as characters to be drawn;
determining the number of characters in the current writing area;
determining the font size of the character to be drawn and the position information of the character to be drawn according to the current character number and the vertex coordinate information of the writing area;
and drawing the character to be drawn according to the font size and the position information.
In some embodiments, the determining the font size of the text to be drawn according to the current number of the text and the vertex coordinate information of the writing area specifically includes:
determining the height and width of the writing area according to the vertex coordinate information of the writing area;
when the current number of the characters is 1, determining the font size of the characters to be drawn according to the larger one of the height and the width of the writing area;
and when the current number of the characters is more than 1, determining the font size of the characters to be drawn according to the width of the writing area divided by the number of the characters.
In some embodiments, the position information of the text to be drawn is determined by:
and determining the center position of the writing area according to the vertex coordinate information of the writing area, and taking the center position as a reference point for vertically centering the character to be drawn.
In some embodiments, identifying the text in the writing area, and determining the number of text in the current writing area specifically is:
recognizing characters in the writing area through an OCR technology, and determining the number of the characters in the current writing area according to the recognition result of the OCR.
In some embodiments, the vertex coordinates of the current writing area are updated according to the touch event, specifically:
acquiring a touch event aiming at a current writing area, and determining a track of the touch event;
if the minimum X coordinate in the touch track is smaller than the X coordinate of the left vertex of the current writing area, updating the X coordinate of the left vertex of the current writing area to the minimum X coordinate in the touch track;
if the maximum X coordinate in the touch track is larger than the X coordinate of the right vertex of the current writing area, updating the X coordinate of the right vertex of the current writing area to the minimum X coordinate in the touch track;
if the minimum Y coordinate in the touch track is smaller than the Y coordinate of the upper vertex of the current writing area, updating the Y coordinate of the lower vertex of the current writing area to the minimum Y coordinate in the touch track;
if the largest Y seat in the touch track is larger than the Y coordinate of the lower vertex of the current writing area, updating the Y coordinate of the upper vertex of the current writing area to the largest Y coordinate in the touch track;
the coordinate system takes the upper left corner of the display picture as a vertex, the Y axis extends downwards, and the X axis extends to the right.
In some embodiments, the method further comprises the steps of:
and acquiring an input instruction, and determining the font of the character to be drawn according to the input instruction.
In some embodiments, the method further comprises the steps of:
judging whether the touch tracks belong to the same writing area or not according to the time of the touch event corresponding to the touch tracks;
and when the time difference generated by the touch events corresponding to the two touch tracks is smaller than a preset value, judging that the two touch tracks belong to the same writing area.
On the other hand, an embodiment of the present application provides a system for drawing characters on an electronic whiteboard, including:
a memory for storing a program;
and the processor is used for loading the program to execute the character drawing method of the electronic whiteboard.
On the other hand, an embodiment of the present application provides an electronic whiteboard, including:
the touch display screen is used for displaying content and not grabbing a touch signal;
a memory for storing a program;
and the processor is used for loading the program to execute the character drawing method of the electronic whiteboard.
In another aspect, an embodiment of the present application provides a storage medium, which stores a program, and when the program is executed by a processor, the program implements the method for drawing characters on an electronic whiteboard.
The embodiment of the application acquires the touch event; the method comprises the steps of updating vertex coordinates of a current writing area according to a touch event, identifying characters in the writing area to serve as characters to be drawn, then determining the number of the characters in the current writing area, determining the font size of the characters to be drawn and the position information of the characters to be drawn according to the current number of the characters and the vertex coordinate information of the writing area, drawing the characters to be drawn according to the font size and the position information, and generating characters with drawing standards according to the position of a user writing on a blackboard and the size of the writing characters on the blackboard, so that the user can freely write on the blackboard according to actual conditions, the limitation of specific text formats is avoided, the standard fonts can be automatically generated, and the situation that handwritten contents are difficult to read is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a text drawing method for an electronic whiteboard according to an embodiment of the present application;
fig. 2 is a schematic diagram of a text rendering effect according to an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below through embodiments with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, etc. should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
With reference to fig. 1 and fig. 2, an embodiment of the present application provides a method for drawing characters on an electronic whiteboard, including the following steps:
and step S1, acquiring the touch event. The touch event refers to a MotionEvent, which is a type of Android native screen touch event and may record a type of event (including an ACTION _ DOWN press, an ACTION _ MOVE, an ACTION _ UP lift, etc.) and a touch XY axis coordinate position, etc.
And step S2, updating the vertex coordinates of the current writing area according to the touch event, wherein the writing area is a rectangle surrounding a plurality of tracks classified into one writing area. As shown in fig. 2, the outer rectangle 200 of the handwritten input is determined by the boundaries reached by the input content. In this embodiment, the position of the writing area may be modified by updating the coordinates of the pointing of the rectangle in which the writing area is located. The range of the writing area may be updated according to a coordinate point distant from the current area in X and Y coordinates when a point not belonging to the writing area appears in the touch trajectory.
Specifically, the vertex coordinates of the current writing area are updated according to the touch event, specifically:
acquiring a touch event aiming at a current writing area, and determining a track of the touch event;
if the minimum X coordinate in the touch track is smaller than the X coordinate of the left vertex of the current writing area, updating the X coordinate of the left vertex of the current writing area to the minimum X coordinate in the touch track;
if the maximum X coordinate in the touch track is larger than the X coordinate of the right vertex of the current writing area, updating the X coordinate of the right vertex of the current writing area to the minimum X coordinate in the touch track;
if the minimum Y coordinate in the touch track is smaller than the Y coordinate of the top vertex of the current writing area, updating the Y coordinate of the bottom vertex of the current writing area to be the minimum Y coordinate in the touch track;
if the largest Y seat in the touch track is larger than the Y coordinate of the lower vertex of the current writing area, updating the Y coordinate of the upper vertex of the current writing area to the largest Y coordinate in the touch track;
the coordinate system takes the upper left corner of the display picture as a vertex, the Y axis extends downwards, and the X axis extends to the right.
A RectF rectangular object (rectF) can be declared, and then the positions of the upper, lower, left and right sides of the outer rectangle are updated according to the XY-axis coordinates transmitted by each MotionEvent event (event), and the codes are as follows:
the upper side: if (event.gety () < rect f.top) front page
rectF.top＝event.getY()；
}
The following steps: if (event.gety () > rect f.bottom) retaining pocket
rectF.bottom＝event.getY()；
}
Left side: if (event.getx () < rect f.left) front page
rectF.left＝event.getX()；
}
And on the right: if (event.getX () > rect F.right) front leaf
rectF.right＝event.getX()；
}
And step S3, recognizing the characters in the writing area as the characters to be drawn.
In the present embodiment, the letters in the writing area are recognized by an OCR (optical character recognition) technique. OCR technology is a relatively sophisticated recognition technology that can recognize words in a pattern.
And step S4, determining the number of characters in the current writing area.
And determining the number of characters in the current writing area according to the recognition result of the OCR. The number of words in the current writing area can be determined by counting the OCR output results.
And step S5, determining the font size of the character to be drawn and the position information of the character to be drawn according to the current number of the characters and the vertex coordinate information of the writing area.
Considering that under the condition of single-character writing, some characters with large difference of true width and height in the horizontal and vertical directions, such as 'one' and '1', need to be distinguished from the condition of multiple characters in order to be closest to the size of the handwritten characters.
Under the condition of multiple characters, the font size is obtained by dividing the width of a writing area by the number of the characters, and the codes are as follows:
intlength＝text.length()；
floattextSize＝(float)rectF.width()/length；
under the condition of single characters, the maximum value of the width and the height of a writing area is the font size, and the method specifically comprises the following steps:
float textSize＝Math.max(rectF.width(),rectF.height())；
therefore, in this embodiment, step S5 specifically includes:
and determining the height and the width of the writing area according to the vertex coordinate information of the writing area. The height and width of the writing area can be calculated from the coordinates of the vertices.
And when the current character number is 1, determining the font size of the character to be drawn according to the larger one of the height and the width of the writing area. If the number of characters is one, selecting one of the higher and wider writing areas can avoid the appearance of characters with smaller outer borders, such as "1" or "one".
And when the current number of the characters is more than 1, determining the font size of the characters to be drawn according to the width of the writing area divided by the number of the characters. When the number of characters is greater than 1, the font size may be determined by dividing the width by the number of characters. As can be seen from fig. 2, the outer rectangle 200 of the original writing area may be relatively flat (assuming the width to height ratio is greater than the number of words), and in this case, the outer rectangle 300 corresponding to the generated font may be higher than the outer rectangle 200 of the writing area.
The position information of the character to be drawn is determined by the following method:
and determining the central position 400 of the writing area according to the vertex coordinate information of the writing area, and taking the central position as a reference point for vertically centering the character to be drawn.
Specifically, a RectF literal rectangle object (textRectF) is declared, and the font size is set into the paintbrush paint: paint. settextsize (textSize);
the corresponding real line height can be obtained through the painting brush with the specified character size, and in order to better accord with visual experience, characters are vertically and centrally displayed in the writing area in a conversion mode, and the position of a rectangular display area of the characters in the line in the screen is obtained.
And step S6, drawing the character to be drawn according to the font size and the position information.
In the step, the drawn characters are refreshed and displayed according to the refreshing rule of the system, and the current handwritten content is replaced.
Specifically, according to the coordinate data of the display rectangular area, the midpoint X-axis coordinate and the datum line Y-axis coordinate are calculated, and then the standard font character close to the size of the handwritten character can be drawn, specifically as follows:
acquiring coordinate values of the center point XY axes of the display rectangular region
floatcenterX＝textRectF.centerX()；
floatcenterY＝textRectF.centerY()；
And/or calculating the coordinate of the Y axis of the datum line where the character is positioned when the character is displayed in the middle according to the coordinate of the Y axis of the middle point of the rectangular display area and the size of the character.
Paint.FontMetrics metrics＝paint.getFontMetrics()；
floatbaseLine＝centerY-(metrics.bottom-metrics.top)/2-metrics.top；
Using the drawText method and passing in midpoint X-axis coordinates and fiducial line Y-axis coordinate parameters, draw with a centered solid style brush.
paint.setTextAlign(Paint.Align.CENTER)；
paint.setStyle(Paint.Style.FILL)；
canvas.drawText(text,centerX,baseLine,paint)；
In the embodiment, the writing area is determined according to the touch time, the characters in the writing area are identified, and the position and the size of the characters to be drawn are determined according to the number of the characters and the position and the size of the writing area. Therefore, the free board writing of the user is not limited, and the corresponding standard characters can be generated according to the handwriting position and size. The appearance is beautiful, and the free board writing of the user is not influenced.
In some embodiments, in order to allow the user to select the text he wants, the method further comprises the steps of:
and acquiring an input instruction, and determining the font of the character to be drawn according to the input instruction.
Specifically, the user can select the color and font of the text through a setting interface or a toolbar, the information is stored in a configuration file after the user selects the color and font, and the system draws the text according to the font pointed in the configuration file.
In some embodiments, it is determined whether the touch event belongs to the same writing area according to the time generated by the touch time, and if the interval time is too long, it is indicated that it may be that the user re-writes at another place, the method further includes the following steps:
and judging whether the touch tracks belong to the same writing area or not according to the time of the touch event corresponding to the touch track.
And when the time difference generated by the touch events corresponding to the two touch tracks is smaller than a preset value, judging that the two touch tracks belong to the same writing area.
In addition, when the touch trajectory is determined, whether the touch trajectory belongs to the same writing area should be determined according to the position of the blackboard writing. Such as line-wrapping and writing text at a distance. If the two touch tracks are larger than a certain distance, the two touch tracks are judged not to belong to the same writing area. It should be understood that when the text is drawn, the entire writing area is drawn. That is, when you write a line of text, the system will draw the text again when the system judges that writing has stopped and the writing area has been fixed.
On the other hand, an embodiment of the present application provides a system for drawing characters on an electronic whiteboard, including:
a memory for storing a program;
and the processor is used for loading the program to execute the character drawing method of the electronic whiteboard.
On the other hand, an embodiment of the present application provides an electronic whiteboard, including:
the touch display screen is used for displaying content and not grabbing a touch signal;
a memory for storing a program;
and the processor is used for loading the program to execute the character drawing method of the electronic whiteboard.
In another aspect, an embodiment of the present application provides a storage medium, which stores a program, and when the program is executed by a processor, the program implements the method for drawing characters on an electronic whiteboard.
The integrated units described in this application may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. A character drawing method of an electronic whiteboard is characterized by comprising the following steps:
acquiring a touch event;
updating the vertex coordinates of a current writing area according to the touch event, wherein the writing area is a rectangle surrounding a plurality of tracks classified as a writing area;
recognizing characters in the writing area as characters to be drawn;
determining the number of characters in the current writing area;
determining the font size of the character to be drawn and the position information of the character to be drawn according to the current character number and the vertex coordinate information of the writing area;
and drawing the character to be drawn according to the font size and the position information.
2. The method for drawing characters on an electronic whiteboard according to claim 1, wherein determining the font size of the characters to be drawn according to the current number of the characters and the vertex coordinate information of the writing area specifically comprises:
determining the height and width of the writing area according to the vertex coordinate information of the writing area;
when the current number of the characters is 1, determining the font size of the characters to be drawn according to the larger one of the height and the width of the writing area;
and when the current number of the characters is more than 1, determining the font size of the characters to be drawn according to the width of the writing area divided by the number of the characters.
3. The method for drawing characters on an electronic whiteboard according to claim 1, wherein the position information of the character to be drawn is determined by:
and determining the center position of the writing area according to the vertex coordinate information of the writing area, and taking the center position as a reference point for vertically centering the character to be drawn.
4. The method for drawing characters on an electronic whiteboard according to claim 1, wherein the identifying characters in the writing area and the determining the number of characters in the current writing area are specifically:
recognizing characters in the writing area through an OCR technology, and determining the number of the characters in the current writing area according to the recognition result of the OCR.
5. The method for drawing characters on an electronic whiteboard according to claim 1, wherein the vertex coordinates of the current writing area are updated according to the touch event, specifically:
acquiring a touch event aiming at a current writing area, and determining a track of the touch event;
if the minimum X coordinate in the touch track is smaller than the X coordinate of the left vertex of the current writing area, updating the X coordinate of the left vertex of the current writing area to be the minimum X coordinate in the touch track;
if the maximum X coordinate in the touch track is larger than the X coordinate of the right vertex of the current writing area, updating the X coordinate of the right vertex of the current writing area to the minimum X coordinate in the touch track;
if the minimum Y coordinate in the touch track is smaller than the Y coordinate of the upper vertex of the current writing area, updating the Y coordinate of the lower vertex of the current writing area to the minimum Y coordinate in the touch track;
if the largest Y seat in the touch track is larger than the Y coordinate of the lower vertex of the current writing area, updating the Y coordinate of the upper vertex of the current writing area to the largest Y coordinate in the touch track;
the coordinate system takes the upper left corner of the display picture as a vertex, the Y axis extends downwards, and the X axis extends to the right.
6. The method for drawing characters on an electronic whiteboard according to claim 1, further comprising the steps of:
and acquiring an input instruction, and determining the font of the character to be drawn according to the input instruction.
7. The method for drawing characters on an electronic whiteboard according to claim 1, further comprising the steps of:
judging whether the touch tracks belong to the same writing area or not according to the time of the touch event corresponding to the touch tracks;
and when the time difference generated by the touch events corresponding to the two touch tracks is smaller than a preset value, judging that the two touch tracks belong to the same writing area.
8. A system for drawing characters on an electronic whiteboard, comprising:
a memory for storing a program;
a processor for loading a program to perform the method of text rendering of an electronic whiteboard of any of claims 1 to 7.
9. An electronic whiteboard, comprising:
the touch display screen is used for displaying content and not grabbing a touch signal;
a memory for storing a program;
a processor for loading the program to execute the method of text rendering of an electronic whiteboard of any of claims 1 to 7.
10. A storage medium characterized by storing a program which, when executed by a processor, implements the method for drawing characters of an electronic whiteboard according to any one of claims 1 to 7.
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| CN202210189443.4A CN114546175A (en) | 2022-02-28 | 2022-02-28 | Character drawing method and system of electronic whiteboard, electronic whiteboard and storage medium |
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| CN202210189443.4A CN114546175A (en) | 2022-02-28 | 2022-02-28 | Character drawing method and system of electronic whiteboard, electronic whiteboard and storage medium |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050220344A1 (en) * | 2003-05-02 | 2005-10-06 | Fujitsu Limited | Handwritten character input device and handwritten character input processing method |
| CN102214043A (en) * | 2011-06-15 | 2011-10-12 | 安徽科大讯飞信息科技股份有限公司 | Handwriting input identifying method and system |
| CN105511792A (en) * | 2015-12-08 | 2016-04-20 | 刘炳林 | In-position hand input method and system for form |
| CN105807967A (en) * | 2014-12-30 | 2016-07-27 | 鸿合科技有限公司 | Writing method and device for electronic whiteboard |
| CN108304132A (en) * | 2018-01-19 | 2018-07-20 | 广州视源电子科技股份有限公司 | graphic display method, device, equipment and storage medium |
| CN108874187A (en) * | 2018-06-06 | 2018-11-23 | 哈尔滨工业大学 | A kind of projector Notes System |
| CN112214192A (en) * | 2020-10-22 | 2021-01-12 | 深圳市皓丽智能科技有限公司 | Operation method and system of intelligent interactive tablet, computer equipment and storage medium |
| CN113657347A (en) * | 2021-08-31 | 2021-11-16 | 京东方科技集团股份有限公司 | Written character recognition method and device, terminal equipment and storage medium |
-
2022
- 2022-02-28 CN CN202210189443.4A patent/CN114546175A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050220344A1 (en) * | 2003-05-02 | 2005-10-06 | Fujitsu Limited | Handwritten character input device and handwritten character input processing method |
| CN102214043A (en) * | 2011-06-15 | 2011-10-12 | 安徽科大讯飞信息科技股份有限公司 | Handwriting input identifying method and system |
| CN105807967A (en) * | 2014-12-30 | 2016-07-27 | 鸿合科技有限公司 | Writing method and device for electronic whiteboard |
| CN105511792A (en) * | 2015-12-08 | 2016-04-20 | 刘炳林 | In-position hand input method and system for form |
| CN108304132A (en) * | 2018-01-19 | 2018-07-20 | 广州视源电子科技股份有限公司 | graphic display method, device, equipment and storage medium |
| CN108874187A (en) * | 2018-06-06 | 2018-11-23 | 哈尔滨工业大学 | A kind of projector Notes System |
| CN112214192A (en) * | 2020-10-22 | 2021-01-12 | 深圳市皓丽智能科技有限公司 | Operation method and system of intelligent interactive tablet, computer equipment and storage medium |
| CN113657347A (en) * | 2021-08-31 | 2021-11-16 | 京东方科技集团股份有限公司 | Written character recognition method and device, terminal equipment and storage medium |
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