CN103646582A - Method and device for prompting writing errors - Google Patents
Method and device for prompting writing errors Download PDFInfo
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Abstract
The invention discloses a method and device for prompting writing errors. The method includes: pictures for the writing process of a user are taken according to a set frequency; the pictures are compared and then a nib motion trail is acquired and current writing content is identified according to the nib motion trail; whether the content of the current writing is correct is judged; and if the content is incorrect, projection marking is performed on the content of the current writing. Through the technical scheme, writing errors in the writing process of the user can be found timely and the positions of the writing errors of the user are prompted through a projection method.
Description
Technical field
The present invention relates to teach auxiliary apparatus field, relate in particular to a kind of method and device of pointing out clerical error.
Background technology
In daily life, user copies or when training book etc. writes operation, occurs as Chinese-character stroke mistake, letter spelling composition error, order of writing strokes mistake or format write mistake etc. unavoidably completing.And user oneself cannot recognize the clerical error of oneself conventionally in time, gradually easily in brain mistake write to formation deep impression.Therefore clerical error is more early found, more easily corrected user's bad writing style.
In addition, user, often can be because there is the low staging errors such as clerical mistake in carelessness in carrying out mathematical problem training process, and still user cannot discover one's mistakes in time conventionally, is unfavorable for that user sums up lesson, eliminating error in time.
Summary of the invention
The object of the invention is to propose a kind of method and device of pointing out clerical error, can find in time the clerical error in user writing process, and with the position of the mode reminding user clerical error of projection.
For reaching this object, the present invention by the following technical solutions:
A method of pointing out clerical error, comprising:
According to setpoint frequency, take the picture of user's writing process;
Contrast described picture and obtain nib movement locus, according to the current content of writing of nib movement locus identification;
Judge whether current content of writing writes correctly;
If incorrect, current content of writing is carried out to projection mark.
Wherein, described according to the current content of writing of nib movement locus identification, be specially:
According to nib movement locus, obtain the unique point of writing, according to the unique point of writing, identify current content of writing; Described unique point of writing comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point;
Describedly judge that whether current content of writing writes correctly, is specially:
Judge that whether current content of writing has write completely, if so, judges whether current content of writing writes correctly.
Wherein, described according to the current content of writing of nib movement locus identification, be specially:
According to the identification of nib the movement locus current font of writing, the order of strokes observed in calligraphy and format write standard, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Describedly judge whether current content of writing writes correctly and be specially:
If the font of writing current, the order of strokes observed in calligraphy and format write standard are not mated with standard content corresponding in preset database, are judged as current content of writing and write incorrect;
Described preset database comprises pre-stored local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard, and described format write standard comprises: letter, the occupy-place of letter spelling on the four line three lattice pages, and the capital and small letter standard of letter.
Wherein, if the described current font of writing, the order of strokes observed in calligraphy and format write standard are not mated with standard content corresponding in preset database, be judged as current content of writing and write incorrectly, specifically comprise:
If the result of the character script of writing current, letter spelling combination or mathematical operation is not mated with standard content corresponding in preset database: or the format write of the current word order of strokes observed in calligraphy of writing, letter spelling does not mate with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
Wherein, describedly judge that whether current content of writing has write completely, is specially:
According to nib movement locus, judge whether nib leaves current region of writing, if so, judge current content of writing and write complete.
Wherein, described current content of writing is carried out to projection mark, is specially:
Surrounding's white space projection in current content of writing goes out the default sign of makeing mistakes; Or,
Surrounding's white space projection in current content of writing goes out corresponding correct content.
Wherein, if described incorrect, current content of writing is carried out to projection mark, also comprises:
Export default voice message signal.
Wherein, described current content of writing is carried out to projection mark after, also comprise:
If correct to the current content modification of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out default correct sign;
If to current content modification mistake of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out the default sign of makeing mistakes, and export default voice message signal.
The present invention also provides a kind of device of pointing out clerical error, comprising:
Taking module, for taking the picture of user's writing process according to setpoint frequency;
Identification module, obtains nib movement locus for contrasting described picture, according to the current content of writing of nib movement locus identification;
Judge module, for judging whether current content of writing writes correctly;
Projection module, if write incorrectly for current content of writing, carries out projection mark to current content of writing.
Wherein, described identification module, specifically for obtain the unique point of writing according to nib movement locus, identifies current content of writing according to the unique point of writing; Described unique point of writing comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point;
Described judge module, specifically for judging that whether current content of writing has write completely, if so, judges whether current content of writing writes correctly.
Wherein, described identification module, specifically for identifying the current font of writing, the order of strokes observed in calligraphy and format write standard according to nib movement locus, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Described judge module, if do not mate with standard content corresponding in preset database specifically for the current font of writing, the order of strokes observed in calligraphy and format write standard, is judged as current content of writing and writes incorrect;
Described preset database comprises pre-stored local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard; Described format write standard comprises: letter, the occupy-place of letter spelling on the four line three lattice pages, and the capital and small letter standard of letter.
Wherein, described judge module, if do not mate with standard content corresponding in preset database specifically for the result of the combination of the current character script of writing, letter spelling or mathematical operation: or the format write standard of the current word order of strokes observed in calligraphy of writing, letter spelling is not mated with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
Wherein, describedly judge that whether current content of writing has write completely, is specially:
According to nib movement locus, judge whether nib leaves current region of writing, if so, judge current content of writing and write complete.
Wherein, described current content of writing is carried out to projection mark, is specially:
Surrounding's white space projection in current content of writing goes out the default sign of makeing mistakes; Or,
Surrounding's white space projection in current content of writing goes out corresponding correct content;
The device of described prompting clerical error also comprises,
Voice module, if write incorrectly for current content of writing, exports default voice message signal;
Described projection module, if also for correct to the current content modification of writing, re-start projection mark, goes out default correct sign with the surrounding's white space projection at revised context; If to current content modification mistake of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out the default sign of makeing mistakes, and export default voice message signal.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is by taking the picture of user's writing process according to setpoint frequency, according to the current content of writing of picture recognition of taking, and then judge whether current content of writing writes correctly, if incorrect, current content of writing is carried out to projection mark, with the position of reminding user clerical error, be convenient to user and find in time clerical error time update clerical error.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of schematic flow sheet of pointing out the method for clerical error of first embodiment of the invention.
Fig. 2 is the schematic diagram of letter, the occupy-place standard of letter spelling on the four line three lattice pages in first embodiment of the invention.
Whether be that judging of first embodiment of the invention is current write complete schematic diagram to Fig. 3.
Fig. 4 is a kind of schematic flow sheet of pointing out the method for clerical error of second embodiment of the invention.
Fig. 5 is the schematic diagram that first embodiment of the invention a kind of points out projection identification means in the method for clerical error.
Fig. 6 is a kind of structural representation of pointing out the device of clerical error of third embodiment of the invention.
Fig. 7 is a kind of structural representation of pointing out the device of clerical error of fourth embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing of the present invention, technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
In conjunction with Fig. 1, the first embodiment of the present invention is described.
Fig. 1 is a kind of method flow diagram of pointing out clerical error of first embodiment of the invention, and details are as follows:
In the first embodiment, the visible current content of writing of user in the picture of shooting.Preferably, the frequency of shooting is made as to 1-10 millisecond, 1 second beats is taken the photograph thousands of pictures, accurately to obtain nib movement locus by comparison plurality of pictures.
In the first embodiment, this step is specially contrast plurality of pictures and obtains nib movement locus, obtains the unique point of writing according to nib movement locus, and the unique point of then writing described in basis identifies current content of writing.The unique point of writing in the present embodiment comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point, for identifying the content of writing.
In the present embodiment, according to nib movement locus, can identify the current font of writing, the order of strokes observed in calligraphy and format write standard, described font comprises the result of Chinese character, letter spelling combination or mathematical operation.Wherein, the current font of writing comprises the result of the current Chinese character of writing, letter spelling combination or mathematical operation, the order of strokes observed in calligraphy writes the sequencing (writing again ' Pie ' as first write '-') of font, format write standard is included in the occupy-place (as shown in Figure 2) on the four line three lattice pages, and the capital and small letter standard of letter etc.
In the present embodiment by real-time shooting plurality of pictures and then identify current content of writing.In addition, by the picture photographing, also can trace into current position of writing, to adjust in real time position, shooting angle of camera etc., to guarantee that can photograph the current content of writing of user is as the criterion.The position that wherein, can obtain nib place by picture is as current position of writing.
In the present embodiment, the execution of step 102 can complete in this locality, and also server completes beyond the clouds, then execution result is turned back to this locality, can also first in this locality, carry out, if local execution result be discrimination lower than default threshold value, then carried out by cloud server.Embodiment is as follows:
Mode one, in this locality according to the current content of writing of described picture recognition, obtain current position of writing.
Mode two, described picture is sent to cloud server, server, according to the current content of writing of described picture recognition, obtains current position of writing beyond the clouds.Then execution result is returned to this locality.
Mode three, first in this locality according to the current content of writing of described picture recognition, obtain current position of writing, if local discrimination is lower than default threshold value, described picture is sent to cloud server, server, according to the current content of writing of described picture recognition, obtains current position of writing beyond the clouds.Then execution result is returned to this locality.
Wherein, mode two need to be connected cloud server by mode wireless networks such as 3G/wifi with mode three.
In the first embodiment, the specific implementation process of step 103 comprises, first judges that whether current content of writing has write completely, if so, judges whether current content of writing writes correctly.In the present embodiment, can judge whether nib leaves current region of writing according to nib movement locus, if so, judge current content of writing and write complete.As shown in Figure 3, when nib leaves dotted line frame region, judge current content of writing " in " write complete.
In the first embodiment, the implementation of step 103 can be: the current font of writing, the order of strokes observed in calligraphy and format write standard are compared with standard content corresponding in preset database, to judge whether the current font of writing, the order of strokes observed in calligraphy and format write standard write correctly.Specifically comprise and judge that whether the result of the current Chinese character of writing, letter spelling combination or mathematical operation is correct, corresponding, preset database comprises: word standard, letter spelling standard and mathematical operation standard.Whether the format write that also can judge the order of writing strokes of the current Chinese character of writing or letter, letter spelling is write correctly, also comprises the order of writing strokes standard of word and the format write standard of letter spelling in described preset database.
It should be noted that, the preset database of the present embodiment both can be for being stored in local database (this locality is used separately), also can be for by the network data base of the mode wireless connections such as 3G/wifi.Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard.
In the first embodiment, if find current clerical error, the default sign of makeing mistakes is projected to surrounding's white space of writing incorrect current written contents.For example, the content of user writing is " 1+3=5 ", on the side of the result of calculation " 5 " of user writing, carries out projection mark, as project "! " sign, with reminding user, write the particular location of makeing mistakes and makeing mistakes, be convenient to writing of user's time update mistake.Or, the correct content of correspondence can also be projected to surrounding's white space of writing incorrect current written contents, to provide the concrete modification of user, guide.
It should be noted that, according to user's actual need, also can be built-in more for judging current other standards content of writing in preset database, for example, built-in common semantic criteria.By the current content of writing of picture recognition of taking, when user is written as " sorrow " by " sorrow " mistake, can judges and currently write incorrectly according to semantic criteria built-in in database, and carry out projection sign, to point out user.
Pass through first embodiment of the invention, by take the picture of user's writing process according to setpoint frequency, according to the current content of writing of picture recognition of taking, and then judge whether current content of writing writes correctly, if incorrect, current content of writing is carried out to projection mark, allow user intuitively where see mistake, be convenient to user and find in time clerical error time update clerical error.
In conjunction with Fig. 4, the second embodiment of the present invention is described, increased in a second embodiment the modify explanation of situation of clerical error.
Fig. 4 is a kind of method flow diagram of pointing out clerical error of second embodiment of the invention, and details are as follows:
Step 101 in this step and the first embodiment is identical, equal visible current content of writing of user in the picture of taking, preferably, is made as 1-10 millisecond by the frequency of shooting, a second beats is taken the photograph thousands of pictures, goes out the track of user writing with the matching identification by described plurality of pictures.
This step is identical with the step 102 in the first embodiment, in the present embodiment, also can adjust shooting angle, the current content of writing of high-visible user in the picture that makes to photograph according to the photo of taking.
In a second embodiment, this step is specially according to nib movement locus to judge whether nib leaves current region of writing, and if so, judges current content of writing and has write complete.Because conventionally user completes writing of a word or completes a phonetic or during the writing of numeral, have one to remove the action that nib leaves current written contents, so the present embodiment this action based on user can judge that current content of writing write complete.
In a second embodiment, this step is specially the described current font of writing, the order of strokes observed in calligraphy and format write standard is compared with standard content corresponding in preset database; Further comprise the result of the combination of the current character script of writing, letter spelling or mathematical operation is compared with standard content corresponding in preset database, and the format write of the order of writing strokes of the current Chinese character of writing or letter spelling is compared with standard content corresponding in preset database.
In the present embodiment, this step specifically comprises, if the result of the character script of writing current, letter spelling combination or mathematical operation is not mated with standard content corresponding in preset database: or the format write of the current word order of strokes observed in calligraphy of writing, letter spelling does not mate with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
For example, as shown in Figure 5, current order of writing strokes mistake, as the content in user writing mistake around white space project "! " sign, with reminding user, write the particular location of makeing mistakes and makeing mistakes, be convenient to writing of user's time update mistake.While for another example, writing following vertical calculating:
Will project on result of calculation " 26 " and " 38 " side of user writing "! " sign.
Certainly, also can in surrounding's white space projection of current content of writing other default signs of makeing mistakes, as long as can play prompting user writing mistake.
As another preferred implementation of the present embodiment, this step also can in surrounding's white space projection of current content of writing corresponding correct content, to provide the clear and definite modification of user, guides.
As another preferred implementation of the present embodiment, writing incorrect projection when sign of carrying out, also exportable default information of voice prompt, for example, send slight " d " sound, and there is writing of mistake in reminding user further.
Step 207, if user revises the content of clerical error, whether the content that judgement is revised is correct, if execution step 208, otherwise, execution step 209.
In the second embodiment, the whether correct concrete grammar of content that judgement is revised is with whether correct write principle before judgement in step 205 identical, all to write situation by the picture recognition of real-time shooting writing process, compare with standard content corresponding in preset database again, with judge write whether correct.
In a second embodiment, described default being correctly designated ' √ ', correct if i.e. user's modification is write, can project " √ " sign at surrounding's white space of revising writing.For example, user is revised as " 4 " by the result of calculation " 5 " in current content of writing " 1+3=5 ", original "! " sign disappearance, on the side of revising writing, project " √ " sign.
In the present embodiment, described default makeing mistakes be designated '! '.If revise mistake, can project at surrounding's white space of revising writing "! " sign, and send slight " d " sound.For example, user is revised as " 3 " by the result of calculation " 5 " in current content of writing " 1+3=5 ", original "! " sign disappearance, on new modification writing side, again project "! " sign, and send slight " d " sound.
By above-mentioned the second embodiment, by take the picture of user's writing process according to setpoint frequency, according to the current content of writing of picture recognition of taking, and then judge whether current content of writing writes correctly, if incorrect, current content of writing is carried out to projection mark, allow user intuitively where see mistake, be convenient to user and find in time clerical error time update clerical error.And when user writes and revises when correct mistake, the sign of the projection that upgrades in time, can deepen user to the impression of correctly writing, and makes user produce the psychological hint of an encouragement simultaneously.
A kind of embodiment that points out the device of clerical error providing for the embodiment of the present invention below.The embodiment of described device and above-mentioned embodiment of the method belong to same design, and the detail content of detailed description not in the embodiment of device, can be with reference to said method embodiment.
Fig. 6 shows a kind of structural representation of pointing out the device of clerical error of third embodiment of the invention, is elaborated below.
Refer to Fig. 6, described device comprises: taking module 301, identification module 302, judge module 303, projection module 304.
In the 3rd embodiment, described taking module 301, for taking the picture of user's writing process according to setpoint frequency.Equal visible current content of writing of user in the picture of taking, preferably, is made as 1-10 millisecond by the frequency of shooting, and a second beats is taken the photograph thousands of pictures, goes out the track of user writing with the matching identification by described plurality of pictures.
In the 3rd embodiment, described identification module 302, specifically for obtain the unique point of writing according to nib movement locus, identifies current content of writing according to the unique point of writing; Described unique point of writing comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point.Described in the present embodiment, identification module 302 can be according to the identification of nib the movement locus current font of writing, the order of strokes observed in calligraphy and format write standard, and described font comprises the result of Chinese character, letter spelling combination or mathematical operation.
In the 3rd embodiment, judge module 303 is specifically for judging whether current content of writing has write complete, if so, by current content of writing is compared with standard content corresponding in preset database, judge whether current content of writing writes correctly.If be specially the current font of writing, the order of strokes observed in calligraphy and format write standard in the present embodiment, do not mate with standard content corresponding in preset database, be judged as current content of writing and write incorrect.Described preset database comprises the local data base of storage, or the network data base connecting by wireless network.Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard; Described format write standard comprises: letter, the occupy-place of letter spelling on the four line three lattice pages, and the capital and small letter standard of letter.Wherein, judge whether current content of writing has write completely, is specially according to nib movement locus to judge whether nib leaves current region of writing, and if so, judges current content of writing and has write complete.
In the present embodiment, if described judge module 303 does not mate with standard content corresponding in preset database specifically for the result of the combination of the current character script of writing, letter spelling or mathematical operation: or the format write standard of the current word order of strokes observed in calligraphy of writing, letter spelling is not mated with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
In the 3rd embodiment, current content of writing is carried out to projection mark, the surrounding's white space projection being specially in current content of writing goes out the default sign of makeing mistakes; Or the surrounding's white space projection in current content of writing goes out corresponding correct content.For example, the content of user writing is " 1+3=5 ", can carry out projection mark on the side of the result of calculation " 5 " of user writing, as project "! " sign, with reminding user, write the particular location of makeing mistakes and makeing mistakes, be convenient to writing of user's time update mistake.Described projection module 304 also can be used for the correct content of correspondence to project to the side of writing incorrect current written contents.
By above-mentioned the 3rd embodiment, by taking the picture of user's writing process, according to the current content of writing of picture recognition and then judge whether current content of writing writes correctly, if incorrect, current content of writing is carried out to projection mark, allow user intuitively where see mistake, be convenient to user and find in time clerical error time update clerical error.
As shown in Figure 7, a kind of structural representation of pointing out the device of clerical error that Fig. 7 is fourth embodiment of the invention.In the 4th embodiment, described device not only comprises taking module 301, identification module 302, judge module 303, projection module 304, specifically, as described in above-mentioned the 3rd embodiment, also comprises voice module 305 and mixed-media network modules mixed-media 306.
In the 4th embodiment, incorrect if voice module 305 is write for current content of writing, export default voice message signal.For example, the current content of writing of user is " frend ", can carry out on the side of " frend " projection mark, as project "! " sign, and send slight " d " sound, there is wrong writing in reminding user further.
In the 4th embodiment, mixed-media network modules mixed-media 306 is for connecting cloud server by the mode wireless network such as 3G/wifi, and by mode wireless network interconnection network databases such as 3G/wifi.
In the 4th embodiment, if described projection module 304 is also for correct to the current content modification of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out default correct sign; If to current content modification mistake of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out the default sign of makeing mistakes, and export default voice message signal.
For example, user is revised as " friend " by current content of writing " frend ", original "! " sign disappearance, on the content side of revising, again project " √ " sign.If user is revised as " firend " by current content of writing " frend ", original "! " sign disappearance, on new content side of revising, again project "! " sign, and send slight " d " sound.
By above-mentioned the 4th embodiment, by taking the picture of user's writing process, according to the current content of writing of picture recognition and then judge whether current content of writing writes correctly, if incorrect, current content of writing is carried out to projection mark, allow user intuitively where see mistake, be convenient to user and find in time clerical error time update clerical error.And when user writes and revises when correct mistake, the sign of the projection that upgrades in time, can deepen user to the impression of correctly writing, and makes user produce the psychological hint of an encouragement simultaneously.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this claim scope of the present invention, therefore, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., still belong to the scope that the present invention is contained.
Claims (14)
1. a method of pointing out clerical error, is characterized in that, comprising:
According to setpoint frequency, take the picture of user's writing process;
Contrast described picture and obtain nib movement locus, according to the current content of writing of nib movement locus identification;
Judge whether current content of writing writes correctly;
If incorrect, current content of writing is carried out to projection mark.
2. the method for prompting clerical error according to claim 1, is characterized in that, described according to the current content of writing of nib movement locus identification, is specially:
According to nib movement locus, obtain the unique point of writing, according to the unique point of writing, identify current content of writing; Described unique point of writing comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point;
Describedly judge that whether current content of writing writes correctly, is specially:
Judge that whether current content of writing has write completely, if so, judges whether current content of writing writes correctly.
3. the method for prompting clerical error according to claim 2, is characterized in that, described according to the current content of writing of nib movement locus identification, is specially:
According to the identification of nib the movement locus current font of writing, the order of strokes observed in calligraphy and format write standard, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Describedly judge whether current content of writing writes correctly and be specially:
If the font of writing current, the order of strokes observed in calligraphy and format write standard are not mated with standard content corresponding in preset database, are judged as current content of writing and write incorrect;
Described preset database comprises pre-stored local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard, and described format write standard comprises: letter, the occupy-place of letter spelling on the four line three lattice pages, and the capital and small letter standard of letter.
4. the method for prompting clerical error according to claim 3, it is characterized in that, if the described current font of writing, the order of strokes observed in calligraphy and format write standard are not mated with standard content corresponding in preset database, be judged as current content of writing and write incorrectly, specifically comprise:
If the result of the character script of writing current, letter spelling combination or mathematical operation is not mated with standard content corresponding in preset database: or the format write of the current word order of strokes observed in calligraphy of writing, letter spelling does not mate with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
5. the method for prompting clerical error according to claim 2, is characterized in that, describedly judges that whether current content of writing has write completely, is specially:
According to nib movement locus, judge whether nib leaves current region of writing, if so, judge current content of writing and write complete.
6. the method for prompting clerical error according to claim 1, is characterized in that, described current content of writing is carried out to projection mark, is specially:
Surrounding's white space projection in current content of writing goes out the default sign of makeing mistakes; Or,
Surrounding's white space projection in current content of writing goes out corresponding correct content.
7. the method for prompting clerical error according to claim 6, is characterized in that, if described incorrect, current content of writing is carried out to projection mark, also comprises:
Export default voice message signal.
8. the method for prompting clerical error according to claim 6, is characterized in that, described current content of writing is carried out to projection mark after, also comprise:
If correct to the current content modification of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out default correct sign;
If to current content modification mistake of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out the default sign of makeing mistakes, and export default voice message signal.
9. a device of pointing out clerical error, is characterized in that, comprising:
Taking module, for taking the picture of user's writing process according to setpoint frequency;
Identification module, obtains nib movement locus for contrasting described picture, according to the current content of writing of nib movement locus identification;
Judge module, for judging whether current content of writing writes correctly;
Projection module, if write incorrectly for current content of writing, carries out projection mark to current content of writing.
10. the device of prompting clerical error according to claim 9, is characterized in that, described identification module, specifically for obtain the unique point of writing according to nib movement locus, identifies current content of writing according to the unique point of writing; Described unique point of writing comprises: the structure of font forms, and initial end points, the presentation direction of stroke and write turning point;
Described judge module, specifically for judging that whether current content of writing has write completely, if so, judges whether current content of writing writes correctly.
The device of 11. prompting clerical errors according to claim 10, it is characterized in that, described identification module, specifically for identifying the current font of writing, the order of strokes observed in calligraphy and format write standard according to nib movement locus, described font comprises the result of Chinese character, letter spelling combination or mathematical operation;
Described judge module, if do not mate with standard content corresponding in preset database specifically for the current font of writing, the order of strokes observed in calligraphy and format write standard, is judged as current content of writing and writes incorrect;
Described preset database comprises pre-stored local data base, or the network data base connecting by wireless network; Standard content in described database comprises font, the order of strokes observed in calligraphy and format write standard; Described format write standard comprises: letter, the occupy-place of letter spelling on the four line three lattice pages, and the capital and small letter standard of letter.
The device of 12. prompting clerical errors according to claim 11, it is characterized in that, described judge module, if do not mate with standard content corresponding in preset database specifically for the result of the combination of the current character script of writing, letter spelling or mathematical operation: or the format write standard of the current word order of strokes observed in calligraphy of writing, letter spelling is not mated with standard content corresponding in preset database; Being judged as current content of writing writes incorrect.
The device of 13. prompting clerical errors according to claim 10, is characterized in that, describedly judges that whether current content of writing has write completely, is specially:
According to nib movement locus, judge whether nib leaves current region of writing, if so, judge current content of writing and write complete.
The device of 14. prompting clerical errors according to claim 9, is characterized in that, described current content of writing is carried out to projection mark, is specially:
Surrounding's white space projection in current content of writing goes out the default sign of makeing mistakes; Or,
Surrounding's white space projection in current content of writing goes out corresponding correct content;
The device of described prompting clerical error also comprises,
Voice module, if write incorrectly for current content of writing, exports default voice message signal;
Described projection module, if also for correct to the current content modification of writing, re-start projection mark, goes out default correct sign with the surrounding's white space projection at revised context; If to current content modification mistake of writing, re-start projection mark, with the surrounding's white space projection at revised context, go out the default sign of makeing mistakes, and export default voice message signal.
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