CN107209862A - Program, information storage medium and identifying device - Google Patents
Program, information storage medium and identifying device Download PDFInfo
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- CN107209862A CN107209862A CN201680006635.XA CN201680006635A CN107209862A CN 107209862 A CN107209862 A CN 107209862A CN 201680006635 A CN201680006635 A CN 201680006635A CN 107209862 A CN107209862 A CN 107209862A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/18—Extraction of features or characteristics of the image
- G06V30/1801—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/22—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
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Abstract
Identifying device of numerical expression comprising character string etc. can be recognized by providing.Identifying device is included：Logging unit, it judges whether the stroke inputted or stroke string are consistent with for distinguishing character string with the determination gesture symbol of numerical expression, in the case where being judged as being consistent with determination gesture symbol, logs in the information related to the scope specified by determination gesture symbol；Being included among differentiation portion, its stroke using input accords with stroke setting in the scope specified as stroke corresponding with character string by determination gesture, will be not included in the stroke setting accorded with by determination gesture in the scope specified and be used as stroke corresponding with numerical expression；And identification part, it recognizes that engine come identification string, recognizes engine from recognizing numerical expression as stroke corresponding with numerical expression and the stroke that sets from as stroke corresponding with character string and the stroke that sets by the use of numerical expression by the use of character string.
Description
Technical field
The present invention relates to program, information storage medium and identifying device.
Background technology
In the past, as the method for input numerical expression, use and use the method for special-purpose language such as LaTeX, defeated using numerical expression
Enter method of editing machine etc., but the former needs to be grasped buzz word, and the latter needs that menu setecting and symbol selection is repeated, right
For general public, both use equal inconvenience.In this regard, recognized in research and utilization computer very early by it is hand-written in
The method of the numerical expression of flat board etc..Also, discrimination is improved by years of researches, further, since plate PC in recent years
Rapid popularization, also increases the possibility permeated to general public.
Prior art literature
Patent document
Patent document 1：JP 2009-80615 publications
The content of the invention
Problems to be solved by the invention
Numerical expression is by marking (symbol) and arithmetic symbol, bracket, fraction symbol, radical sign, integral sign, expression power etc.
The position of symbol, the relation of size constitutes.In hand-written numerical expression identifying system, usually assume that labeled as alphanumeric symbol,
But in fact, also character string often beyond writing alphanumeric symbol recognizes system as mark in conventional hand-written numerical expression
In system, the problem of there is the character string that None- identified numerical expression is included.This numerical expression comprising character string is frequent in textbook
Occur, also often by writing on the blackboard in blackboard.
The present invention is accomplished in view of the above problems, and its object is to provide that the number for including character string can be recognized
Program, information storage medium and the identifying device of formula.
The solution used to solve the problem
(1) the present invention relates to the program for numerical expression of the stroke string identification comprising character string from handwriting input, it is used for
Make computer as logging unit, differentiation portion and identification part function, above-mentioned logging unit judges the stroke or stroke of input
Whether string is consistent with for distinguishing character string with the determination gesture symbol of numerical expression, is being judged as according with the feelings being consistent with above-mentioned determination gesture
Under condition, the information related to the scope specified by above-mentioned determination gesture symbol is logged in, above-mentioned differentiation portion is by among the stroke of input
Set included in the stroke accorded with by above-mentioned determination gesture in the scope specified as corresponding with the side in character string and numerical expression
Stroke, will be not included in by above-mentioned determination gesture accord with stroke setting in the scope specified as with it is another in character string and numerical expression
The corresponding stroke of one side, above-mentioned identification part recognizes engine from being used as stroke corresponding with character string and the pen that sets by the use of character string
Draw and carry out identification string, recognize engine from recognizing numerical expression as stroke corresponding with numerical expression and the stroke that sets by the use of numerical expression.
Moreover, it relates to the information storage medium of embodied on computer readable, it is stored with for making computer be sent out as above-mentioned each portion
Wave the program of function.Moreover, it relates to include the identifying device in above-mentioned each portion.
According to the present invention, judge that the stroke of input, whether with determining that gesture symbol is consistent, will be contained in and be referred to by determination gesture symbol
Stroke in fixed scope is set as stroke corresponding with the side in character string and numerical expression, will be not included in by determination gesture
The stroke accorded with the scope specified is set as stroke corresponding with the opposing party in character string and numerical expression, is recognized using character string
Engine carrys out identification string from the stroke set as stroke corresponding with character string, by the use of numerical expression recognize engine from as with
The corresponding stroke of numerical expression and the stroke that sets recognize numerical expression, clear and definite thereby, it is possible to the character string and numerical expression that are included numerical expression
Ground is distinguished and identified respectively.In addition it is also possible to consider to automatically separate (differentiation) numerical expression without using gesture symbol is determined
With the method for character string.However, it is difficult with character string automatically to distinguish numerical expression by mistake, it is impossible to avoid splitting, therefore, in this hair
In bright, the determination gesture for distinguishing character string and numerical expression imported and has accorded with.
(2) in addition, in program involved in the present invention, information storage medium and identifying device or：It is above-mentioned
Differentiation portion will be contained in by this in the case where the stroke or stroke string of input are judged as being consistent with above-mentioned determination gesture symbol
Determine that the stroke in the scope that gesture symbol is specified is set as stroke corresponding with the side in character string and numerical expression, in input
Stroke is judged as in the case of not being consistent with above-mentioned determination gesture symbol, judges whether the stroke of the input is included in by above-mentioned true
Determine in the scope that gesture symbol is specified, situation about being accorded with by above-mentioned determination gesture in the scope specified is included in the stroke of the input
Under, it regard the stroke setting of the input as stroke corresponding with the side in character string and numerical expression.
According to the present invention, either in the case where written character string (or numerical expression) writes determination gesture symbol afterwards, still
In the case of written character string (or numerical expression) after writing determines that gesture is accorded with, character string and numerical expression, Neng Gouti can be distinguished
The convenience of high user.
(3) in addition, in program involved in the present invention, information storage medium and identifying device or：It is above-mentioned
Differentiation portion using among the stroke of input be included in by above-mentioned determination gesture accord with stroke setting in the scope specified as with word
The corresponding stroke of symbol string, the stroke that will be not included in the scope specified by above-mentioned determination gesture symbol is set as corresponding with numerical expression
Stroke, the stroke that above-mentioned identification part will be contained in the scope specified by 1 above-mentioned determination gesture symbol is considered as 1 mark, sharp
Recognize engine to recognize numerical expression with numerical expression.
According to the present invention, it will be contained in by 1 stroke determined in the scope that gesture symbol is specified (as corresponding with character string
Stroke and the stroke that sets) be considered as 1 mark and recognize engine to recognize numerical expression using numerical expression, thereby, it is possible to using can not
The numerical expression of identification string recognizes engine to recognize the numerical expression comprising character string.
(4) in addition, in program and information storage medium involved in the present invention or：Also make computer conduct
Enter to exercise the display control unit function that the stroke string inputted is shown in the control of display part, above-mentioned display control unit enters to exercise
It is judged as according with the stroke being consistent or stroke string as expression and the corresponding shape of above-mentioned determination gesture symbol with above-mentioned determination gesture
The image of shape is come the control that shows.
In addition, in identifying device involved in the present invention or：The stroke string for being also included into enforcement input is shown
In the display control unit of the control of display part, above-mentioned display control unit, which enters to exercise, to be judged as according with what is be consistent with above-mentioned determination gesture
The control that stroke or stroke string are shown as expression with the image of the corresponding shape of above-mentioned determination gesture symbol.
According to the present invention, make to be judged as with determining that the stroke that gesture symbol is consistent is corresponding with determining gesture symbol as expression
The image of shape is shown, determines that gesture symbol is correctly judged out thereby, it is possible to know user, it is possible to increase user
Convenience.
(5) in addition, in program involved in the present invention, information storage medium and identifying device or：It is above-mentioned
Display control unit enters to exercise to be included in accords with the stroke in the scope specified with being not included in by above-mentioned true by above-mentioned determination gesture
The control for determining the different color of the stroke in the scope that gesture symbol is specified to show.
According to the present invention, make the stroke being included in the scope specified by determination gesture symbol with being not included in by determination hand
Stroke in the scope specified of gesture symbol different color shows, thereby, it is possible to make user know using determining gesture symbol just
Really distinguish character string and numerical expression, it is possible to increase the convenience of user.
(6) in addition, in program involved in the present invention, information storage medium and identifying device or：It is above-mentioned
Logging unit the stroke or stroke string of input formed it is substantially rectangular in the case of, be judged as the stroke or stroke string with it is above-mentioned
Determine that gesture symbol is consistent.
Brief description of the drawings
Fig. 1 is one of the functional block diagram of the identifying device of present embodiment.
Fig. 2A is to show to be contaminated with numerical expression, character string and determine the figure of one of the writing that gesture is accorded with.
Fig. 2 B are the figures of one for showing to determine gesture symbol table.
Fig. 3 A are for illustrating that writing determines the figure of the order of gesture symbol.
Fig. 3 B are for illustrating that writing determines the figure of the order of gesture symbol.
Fig. 3 C are for illustrating that writing determines the figure of the order of gesture symbol.
Fig. 3 D are for illustrating that writing determines the figure of the order of gesture symbol.
Fig. 4 A are the figures of one of the writing for the determination gesture symbol for showing rectangle.
Fig. 4 B are the figures of one of the writing for the determination gesture symbol for showing rectangle.
Fig. 5 is the flow chart of one for showing the processing under gradually mode.
Fig. 6 A are to show the figure for being particularly shown example under gradually mode.
Fig. 6 B are to show the figure for being particularly shown example under gradually mode.
Fig. 6 C are to show the figure for being particularly shown example under gradually mode.
Fig. 6 D are to show the figure for being particularly shown example under gradually mode.
Fig. 6 E are to show the figure for being particularly shown example under gradually mode.
Fig. 6 F are to show the figure for being particularly shown example under gradually mode.
Fig. 7 is the flow chart of one for showing the processing under batch mode.
Fig. 8 A are to show the figure for being particularly shown example under batch mode.
Fig. 8 B are to show the figure for being particularly shown example under batch mode.
Fig. 8 C are to show the figure for being particularly shown example under batch mode.
Embodiment
Hereinafter, present embodiment is illustrated.In addition, the present embodiment illustrated below is not used to claim
Present disclosure described in book is undeservedly limited.In addition, the composition illustrated in present embodiment might not all be
The present invention's must be configured into key element.
1. constitute
Fig. 1 shows one of the functional block diagram of the identifying device of present embodiment.In addition, the identifying device of present embodiment
It can also be the composition for omitting a part for Fig. 1 inscape (each portion).
Character input portion 160 is used to allow user by writing medium (pen, finger tip etc.) inputting characters by handwriting, and its function can
Writing surface by flat board, touch panel etc. etc. is realized.Character input portion 160 represents to be situated between from writing with Fixed Time Interval detection
Matter contacts the coordinate data of the position of writing medium of the writing surface untill writing surface is left, and by the coordinate data string detected
(coordinate point sequence) is as the data output of stroke (stroke) to processing unit 100.In addition, by from the terminal of stroke to next record
Vector untill the starting point of picture is referred to as the (off-stroke that writes quickly；Wield the pen vector), stroke and continuous sequence of writing quickly are referred to as pen
Draw string.
Storage part 170 is stored for making computer as program, the various data of each portion's function of processing unit 100,
And as the working region function of processing unit 100, its function can be realized by hard disk, RAM etc..
The image that display part 190 is used to be generated by processing unit 100 is exported, and its function can be by being also used as character input
The displays such as touch panel, LCD or the CRT of the function of portion 160 are realized.
Processing unit 100 (processor) based on the coordinate data from character input portion 160, program etc., be identified processing,
The processing such as display control.Main storage portion in storage part 170 is carried out various processing by the processing unit 100 as working region.
The function of processing unit 100 can be realized by the hardware such as various processors (CPU, DSP etc.), ASIC (gate array etc.) or program.
Processing unit 100 includes logging unit 110, differentiation portion 112, identification part 114, display control unit 120.
Logging unit 110 judge input stroke or stroke string whether with the determination gesture for distinguishing character string and numerical expression
Symbol is consistent, in the case where being judged as being consistent with above-mentioned determination gesture symbol, log in according with what is specified by above-mentioned determination gesture
The processing of the related information of scope (region).The information logged in is stored in storage part 170.Here, logging unit 110 can be
The stroke or stroke string of input formed it is substantially rectangular in the case of, be judged as the stroke or stroke string and above-mentioned determination gesture
Symbol is consistent.
Being included among the stroke of input is accorded with the stroke in the scope specified by above-mentioned determination gesture and set by differentiation portion 112
It is set for as stroke corresponding with the side in character string and numerical expression, will be not included in and be accorded with by above-mentioned determination gesture in the scope specified
Stroke setting be used as stroke corresponding with the opposing party in character string and numerical expression.That is, differentiation portion 112 can be by the stroke of input
Among the stroke accorded with by above-mentioned determination gesture in the scope specified that is included in set as stroke corresponding with character string, will not
Set as stroke corresponding with numerical expression, can also overturn included in the stroke accorded with by above-mentioned determination gesture in the scope specified
Come.
Identification part 114 is handled as follows：By the use of character string recognize engine from as stroke corresponding with character string by
Differentiation portion 112 set stroke carry out identification string, by the use of numerical expression recognize engine from as stroke corresponding with numerical expression by area
The stroke that branch 112 sets recognizes numerical expression.The model specified is accorded with by above-mentioned determination gesture here, will be contained in differentiation portion 112
In the case that stroke in enclosing is set as stroke corresponding with character string, identification part 114 can also be by 1 above-mentioned determination gesture
Accord with and included in determining that the stroke in the scope that gesture symbol is specified is considered as 1 mark by this, recognize engine to recognize using numerical expression
Numerical expression.For example, in the example shown in Fig. 2A, character string " area ", " height ", " width " can be respectively seen as
1 mark as " x ", " y ", " z ", is identified by numerical expression identification engine.
Display control unit 120, which enters, exercises the control that the stroke string inputted is shown in display part 190.Here, display control unit
120 can enter to exercise the stroke for being judged as being consistent with above-mentioned determination gesture symbol or stroke string as expression and above-mentioned determination hand
The control that gesture accords with the image (for example, representing the image of rectangle) of corresponding shape to show.In addition, display control unit 120 also may be used
The stroke in the scope specified is accorded with being not included in by above-mentioned determination gesture symbol by above-mentioned determination gesture to enter to exercise to be included in
The different color of the stroke in scope specified is come the control that shows.In addition, display control unit 120 enters to exercise by identification part 114
The numerical expression (recognition result) comprising character string identified is shown in the control of display part 190.
2. the method for present embodiment
Then, the method for present embodiment is illustrated using accompanying drawing.
In the case where making the numerical expression of character string of the computer identification comprising handwriting input, it is generally desirable to from the stroke of input
Numerical expression is automatically separated (differentiation) with character string and opens and recognize respectively by string (handwritten pattern).However, automatically distinguish numerical expression with
Character string is natively difficult, if to recognize numerical expression and character string respectively in the case of incomplete differentiation, discrimination has
It may be remarkably decreased.
Therefore, in the method for present embodiment, import the gesture for distinguishing character string and numerical expression and accord with.The gesture is accorded with
Referred to as determine gesture symbol.Here, so-called determination gesture symbol, refers to following operation：Turn into character, the number of identification object when having write
During symbol beyond formula, it is determined that included in the stroke accorded with by the gesture in the scope specified, and carry out handle corresponding with this.
In the method for present embodiment, accorded with using the rectangle for surrounding character string as determination gesture.That is, in handwriting input
Stroke (or stroke string) formation it is substantially rectangular in the case of, be judged as the stroke with determine gesture accord be consistent, from included in
By this determines that the stroke in the scope that gesture symbol is specified, come identification string, the model that gesture symbol is specified is determined from being not included in by this
Interior stroke is enclosed to recognize numerical expression.Why using rectangle as determine gesture symbol shape, be because：In general numerical expression not
Rectangle occurs, in addition, for specified range, it is natural to write rectangle for the mankind.In addition, in some necks of mathematics
In domain, sometimes by square, rectangle with marking, but in this case, as long as substitution rectangle and use is other shapes of
Mark is used as determination gesture symbol.That is, as long as it is unique (easily distinguished with other marks, symbol to determine gesture symbol shape
Open), the scope indicated by it is clear and definite.For example, the shape for determining gesture symbol can also write rectangle from right to left
One or two diagonal shape (why in this way, be because if writing from left to right, then can not be with " X "
Differentiate), it can also be the shape (shape for turning " α " around) of two diagonal of continuous writing rectangle.In addition,
This, uses to distinguish character string that numerical expression included and determines that gesture is accorded with, but it is also possible to included to distinguish character string
Numerical expression and use and determine gesture symbol (for example, surrounding rectangle etc. of numerical expression).
Fig. 2A is to show to be contaminated with numerical expression, character string and determine the figure of one of the writing that gesture is accorded with.Whenever there is stroke defeated
Fashionable, logging unit 110 monitors whether the stroke is to determine that gesture is accorded with, in the case where being judged as that the stroke is to determine gesture symbol,
The determination gesture is accorded with the order of strokes observed in calligraphy (with determining the order of stroke that gesture symbol is consistent) and coordinate (coordinate at 4 angles of rectangle or
The coordinate at relative 2 angle of person's rectangle) sign in determination gesture symbol table.Fig. 2 B are to show that the writing example with Fig. 2A is corresponding really
Determine the figure that gesture accords with table.For example, in the determination gesture symbol table shown in Fig. 2 B, on determining gesture symbol BG1, be logged in its be
The 5th cartoon book after 4 character strings " area " drawn is write, and be logged in its upper left corner and the lower right corner coordinate (with by determination hand
One of the information for the scope correlation that gesture symbol is specified), on determining gesture symbol BG2, it is after the 1st "×" to be logged in it
What the 13rd cartoon book was write, and the coordinate in its upper left corner and the lower right corner is logged in, on determining gesture symbol BG3, it is the 2nd to be logged in it
What the 18th cartoon book after individual "×" was write, and it is logged in the coordinate in its upper left corner and the lower right corner.Differentiation portion 112 is with reference to such as Fig. 2 B institutes
The determination gesture symbol table shown, a part for character string is divided into (with character by the stroke that encirclement is accorded with by any one determination gesture
Go here and there corresponding stroke), the stroke beyond it is divided into a part (stroke corresponding with numerical expression) for numerical expression.
In the example shown in Fig. 2A, thus it is shown that with 1 draw write determine gesture symbol situation, but it is also possible to allow with
Draw determines gesture symbol more to write.In this case, for the ease of processing, regulation writing determines that the maximum of gesture symbol draws number (example
Such as, 4 draw), in addition, from writing determination gesture symbol is started untill writing terminates, not write corresponding with numerical expression or character
Stroke is condition., then, will not be as very big restriction for user if the condition of this degree.In addition, allow with
The order of strokes observed in calligraphys for drawing that the initial stroke for determining gesture symbol in the case of writing and determining gesture symbol, will be constituted and last stroke more
Both order of strokes observed in calligraphys sign in determination gesture symbol table.In addition, " order of strokes observed in calligraphy after adjustment " in Fig. 2 B determination gesture symbol table is entered later
Row explanation.
In the method for present embodiment, no matter what opportunity writing determine gesture symbol, be performed both by distinguish character string with
The processing of numerical expression.Because,, can be as very big system for user if specifying writing to determine the order that gesture is accorded with
About, cause to use inconvenience.As shown in figure 3, determining the order of gesture symbol on writing, it is considered to there is 4 kinds of situations.Fig. 3 A show
Go out initially writing and determine gesture symbol BG, then it is determined that gesture accords with the situation of written character string in BG, Fig. 3 B show initial writing
The determination gesture symbol BG of character string situation is surrounded in character string, then writing, and Fig. 3 C show initial written character string, Zhi Houshu
Other strokes are write, the determination gesture symbol BG of character string situation is surrounded in then writing, and Fig. 3 D are shown in the bag write
The situation of character string is added in the determination gesture symbol BG for enclosing character string.
Fig. 4 shows one of the writing of the determination gesture symbol of rectangle.User writing determine gesture symbol BG in the case of, from
The upper left corner of rectangle starts to write, and continues to write and return to upper left along (reference picture 4A) clockwise or along (reference picture 4B) counterclockwise
Angle.Differentiation portion 112 is included at least a portion stroke point (for example, more than 1/3) for constituting the stroke of input and determines gesture symbol
In in the case of, be judged as that the stroke is accorded with by the determination gesture and surround that (stroke is included in determines the model specified of gesture symbol by this
In enclosing).This allows for the determination gesture symbol that user write and intersected (reference picture 3) with other strokes sometimes.
In the method for present embodiment, gesture symbol is determined in order to accurately recognize, the time series of stroke will be used
The ONLINE RECOGNITION method of information and using stroke the feature as image identified off-line method and for recognizing determination gesture
Symbol.Identification determine gesture symbol when identification object for numerical expression (mark such as English character, arithmetic symbol, fraction symbol, radical sign,
The operators such as integral sign, bracket) and determine that gesture accords with (enclosed rectangle).
In ONLINE RECOGNITION method, MRF (Markov Random Field are used：Markov random field) model.It is first
First, it will input that pattern is regular to turn to standard size, utilize La Mo-Douglas-Pu Ke (Ramer-Douglas-Peucker) to calculate
Method, extracts the characteristic points such as end points, angle.Then, the characteristic point with MRF models carries out Elastic Matching.Evaluated using threshold value
Point, then abandoned in the case where score is less than threshold value.
In identified off-line method, MQDF (Modified Quadratic Discriminant Function are used：Repair
Positive quadric discriminant function).Stroke point string is connected by order in temporal sequence, stroke easily can be transformed to image.
Although meeting drop-out time sequence information, by transforming it into image, can exclude the order of strokes observed in calligraphy when stroke is transformed into image
The influence that difference, rewriting etc. are brought.For the image, Gradient Features are extracted and to 8 using Sobel (Sobel) filter
Direction projection.If original image is 64 × 64 pixels, 8 × 8 subregions of same size are divided into.It is applied to 18 × 18 pictures
The Gaussian filter of element blurs it.So, the contribution of the direction character near from center is big, and the contribution on periphery is small, from adjacent
Subregion can also obtain some contributions, thus carry out the skew of anti-position.As a result, going out 8 directions by each 8 × 8 multi-subarea extracting
Feature, the feature of 512 dimensions is always obtained.And then, avenge the discriminant analysis of (Fisher) to compress dimension using expense, obtain
The feature of 256 dimensions.It is identified using MQDF.And then, given threshold, in the distance to the rectangle for inputting pattern even in most
In short-term also greater than threshold value in the case of then abandon.
Finally, the result of ONLINE RECOGNITION method and identified off-line method is integrated.Here, ONLINE RECOGNITION method is drawn
Be probable value logarithm value (although negative value, being the bigger the better), what identified off-line method was drawn is distance (the smaller the better),
So needing to make their yardstick consistent.Therefore, by the score of ONLINE RECOGNITION is multiplied by -1 and become on the occasion of (so,
It is the smaller the better), weighted sum is taken, comprehensive score is thus calculated.Comprehensive score scorecombinationCalculated by following formula.
[number 1]
scorecombination=(- 1) × w1×scoreonline+w2×scoreoffline (1)
Here, scoreonline、scoreofflineIt is score, the score of identified off-line method of ONLINE RECOGNITION method respectively.
In addition, w1、w2It is comprehensive weight, they are optimized by using training pattern.In more detail, generally,
scoreonlineTake -10 or so to 0 value, scoreofflineTake 0 less than 1024 value.That is ,-scoreonlineFor
scoreofflineOne 1 percent or so, therefore, in reality, meet 0 ＜ w1＜ 0.1, w2=1-w1Condition when can obtain
Optimum value.Logging unit 110 is by the score among identification objectcombinationMinimum identification object is identified as determining gesture symbol.
3. processing
Then, the flow to the processing of the identifying device of present embodiment is illustrated.Identifying device has：Can be such as plate
PC so, the interactive device of feedback that the stroke point of time series is shown in real time and is identified by each stroke；And
The stroke point of time series is recorded by possessing the flat board of memory, electronic pen, the reading and processing of its data are by the batch such as PC
The non-interactive device of progress.
The processing of 3-1. gradually modes
In the gradually mode that interactive device is used, user specifies the language of identification string (for example, English or day
Language) and activation system (program), start to write numerical expression, character string to the input unit of touch panel etc..System is in each lettering pen
The differentiation of identification, character string and the numerical expression of gesture symbol is determined during picture, after writing terminates, the knowledge of character string and ordered series of numbers is carried out
The display of other and recognition result.Fig. 5 is the flow chart of one for showing the processing under gradually mode.
First, processing unit 100 obtains the stroke (step S10) for being input to character input portion 160.Now, display control unit
120 enter the control that the stroke acquired by exercising is shown in display part 190.Then, logging unit 110 judges to chase after from acquired stroke
Whether the nearest stroke untill the maximum picture number (for example, 4 draw) for determining gesture symbol that traces back (is constituted really with determining that gesture symbol is consistent
Determine gesture symbol) (step S12).For example, what logging unit 110 was drawn for 1 nearest stroke, nearest 2 stroke strings drawn, nearest 3
The stroke string that (maximum draws number) is drawn in stroke string, nearest 4 calculates comprehensive score score respectivelycombination, among identification object,
Determine that gesture symbol provides the score of minimumcombinationWhen, it is identified as determining gesture symbol.But, for by ONLINE RECOGNITION method and
The stroke that any one method in identified off-line method is abandoned, does not calculate scorecombination, it is abandoned in every unicursal
In the case of, it is judged as with determining that gesture symbol is not consistent.
With determine gesture symbol be consistent in the case of (step S12 "Yes"), logging unit 110 is according to being judged as and determine
The information for the stroke that gesture symbol is consistent, the information (coordinate at the order of strokes observed in calligraphy and 2 relative angles) for determining gesture symbol is signed in really
Determine gesture symbol table (step S14).Here, logging unit 110 is being judged as with determining that gesture is to be set before according with the stroke being consistent
In the case of being set for as stroke corresponding with numerical expression, the setting is cancelled.It is judged as in addition, display control unit 120 enters enforcement
From determine the image of stroke that gesture symbol is consistent as represent the color (for example, red) different with other strokes rectangle (with
Determine that gesture accords with corresponding shape) image come the control that shows.Thereby, it is possible to determine what gesture symbol had been correctly identified
Situation feeds back to user.
Then, differentiation portion 112 will be contained in the scope specified by the determination gesture symbol logged in reference to gesture symbol table is determined
Interior stroke setting is used as stroke (step S16) corresponding with character string.Now, display control unit 120 enter exercise be included in by
Determine the control of the color change (for example, turning to blueness from black change) of the stroke in the scope that gesture symbol is specified.Thereby, it is possible to incite somebody to action
Using determine gesture symbol correctly distinguish character string situation feed back to user.In addition, being referred to being contained in by determination gesture symbol
In the case of stroke in fixed scope is non-existent, step S16 processing is skipped.
In the case where not being consistent with determination gesture symbol (step S12 "No"), differentiation portion 112 is with reference to determination gesture symbol
Table, judges whether acquired stroke is included in and is determined by any one in the scope that gesture symbol is specified (step S18).Taken
Stroke be included in by any one determine in the scope specified of gesture symbol in the case of (step S18 "Yes"), differentiation portion
112 set acquired stroke as stroke (step S20) corresponding with character string, and display control unit 120, which enters to exercise, to be taken
The control of the color change (turning to blueness for example, becoming from black) of the stroke obtained.On the other hand, do not included in acquired stroke
In the case where being accorded with by determination gesture in the scope specified (step S18 "No"), differentiation portion 112 sets acquired stroke
It is used as stroke (step S22) corresponding with numerical expression.
Then, processing unit 100 determines whether that stroke inputs (step S24), (step in the case where there is stroke input
S24 "Yes"), be transferred to step S10 processing, later repeat step S10 processing until writing that user is carried out terminate be
Only.
In the case where being judged as inputting without stroke (step S24 "No"), identification part 114 is drawn using character string identification
Hold up and carry out identification string from the stroke set as stroke corresponding with character string in step S16, S20, known using numerical expression
Other engine recognizes numerical expression (step S26) from the stroke set as stroke corresponding with numerical expression in step S22.Also,
Display control unit 120 enters to exercise recognition result (numerical expression for including character string) and is shown in the control of display part 190.
Here, numerical expression identification engine had not both been understood with determining the corresponding stroke of gesture symbol, do not understand corresponding with character string yet
Stroke, if be not determined gesture symbol surround character string information (that is, according only to the letter of stroke corresponding with numerical expression
Breath), it is that can not parse the structure of numerical expression.Therefore, in the method for present embodiment, gesture symbol is determined and true by this by 1
The character string for determining gesture symbol encirclement is considered as 1 mark (1 symbol in numerical expression), the seat accorded with from the determination gesture for being considered as the mark
The information of information and stroke corresponding with numerical expression is marked to recognize numerical expression.Therefore, to adjust the order of strokes observed in calligraphy for determining gesture symbol.It is specific next
Say, the initial stroke and initial pen corresponding with the character string surrounded by determination gesture symbol of determination gesture symbol will be constituted
The order of strokes observed in calligraphy signs in determination gesture symbol table after the adjustment that the side of the order of strokes observed in calligraphy earlier among the order of strokes observed in calligraphy of picture accords with as the determination gesture.
In example shown in Fig. 2, determination gesture symbol BG is used as1、BG2、BG3Adjustment after the order of strokes observed in calligraphy, " 1 ", " 9 ", " 12 " are logged in respectively.
In this case, identification part 114 (numerical expression identification engine) can will determine gesture symbol BG by referring to gesture symbol table is determined1And
Its character string included " area " is considered as 1 mark write in the 1st cartoon book, will determine gesture symbol BG2And its word included
Symbol string " height " is considered as 1 mark write in the 9th cartoon book, will determine gesture symbol BG3And its character string " width " included
It is considered as 1 mark write in the 12nd cartoon book, according to these marks and the position of the stroke corresponding to numerical expression, the relation of size, enters
The structure elucidation of line number formula.
In gradually mode, user wrongly writes sometimes, therefore is preferably provided with cancelling (Undo) function.In this case, exist
User have input when cancelling order, in the case that the newest stroke cancelled is determines gesture symbol, by determination gesture symbol and
Its log-on message is deleted, and be will be contained in and is determined that gesture accords with the stroke in the scope specified (as pen corresponding with character string by this
Draw and set stroke) reset be used as stroke corresponding with numerical expression.On the other hand, the newest stroke cancelled be with
In the case of character string or the corresponding stroke of numerical expression, simply the stroke is deleted.
Fig. 6 is to show the figure for being particularly shown example under gradually mode.In the example shown in Fig. 6, user's written word first
Symbol string " value " and numerical expression, and write the determination gesture symbol BG for surrounding character string " value "1(Fig. 6 A).Then, logging unit 110
Identify determination gesture symbol BG1, display control unit 120 will determination gesture symbol BG1It is replaced into and is represented with red with determining gesture symbol
BG1The image BI of the rectangle of equal size1(determining that gesture accords with image), makes to be determined gesture symbol BG1The character string of encirclement
The color change of " value " is blue (Fig. 6 B).Then, the new determination gesture symbol BG of user writing2(Fig. 6 C).Then, log in
Identify determination gesture symbol BG in portion 1102, display control unit 120 will determination gesture symbol BG2It is replaced into determination gesture symbol image BI2
(Fig. 6 D).Then, when user is it is determined that gesture symbol image BI2During middle written character string " result ", display control unit 120 is every
The character string " result " is set to show (Fig. 6 E) with blueness during secondary acquirement stroke.Finally, when user indicate the execution of identification
Operation when, identification part 114 carries out the identification of character string and numerical expression, and display control unit 120 makes recognition result show (figure
6F).In addition, being that will determine gesture symbol image BI herein1、BI2Remove to show recognition result.
The processing of 3-2. batch modes
In the batch mode that non-interactive device is used, user's activation system, and write number to the interface of flat board etc.
Formula, character string.Also, after writing, the data of stroke string is read into PC etc. (identifying device), identification character is specified at this moment
The language of string.In batch mode, the identification of identification, the differentiation of character string and numerical expression, character string and the ordered series of numbers of gesture symbol is determined
And this 3 processing of the display of recognition result are performed after the data of all stroke strings are sent to PC etc..Now, right
When the stroke of input is handled successively, the processing same with gradually mode can be also carried out.In addition, in batch mode, by
In the differentiation without the identification for being determined gesture symbol in real time, character string and numerical expression, accordingly it is also possible to adopt with the following method：
Identify after all determination gesture symbols, the stroke beyond it is divided into character string and numerical expression, them are finally recognized.Fig. 7 is
The flow chart of one of the processing of later approach under batch mode is shown.
First, processing unit 100 obtains the stroke string (step S30) for being input to character input portion 160.Then, processing unit 100
Variable i is set to 1 (step S32).Then, logging unit 110, which judges to trace back to from i-th of stroke (i-th draws), determines gesture symbol
Whether the nearest stroke untill maximum draws number (for example, 4 draw) is consistent (step S34) with determining that gesture is accorded with.
With determine gesture symbol be consistent in the case of (step S34 "Yes"), logging unit 110 is according to being judged as and determine
The information for the stroke that gesture symbol is consistent, the information (coordinate at the order of strokes observed in calligraphy and 2 relative angles) for determining gesture symbol is signed in really
Determine gesture symbol table (step S36).In the case where not being consistent with determination gesture symbol (step S34 "No"), i-th of stroke is set
It is set for according with stroke (with determining the stroke that gesture symbol is not consistent) (step S38) for non-gesture.
Then, processing unit 100 makes the value of variable i plus 1 (step S40), and whether judgment variable i value is that (n is acquirement to n
The sum for the stroke that stroke string is included) below (step S42).Variable i value be below n in the case of (step S42's
"Yes"), step S34 is transferred to, processing later repeat step S34 is untill the value of variable i is more than n.
In the case where the value of variable i is more than n (step S42 "No"), variable i is set to 1 (step by processing unit 100
S44).Then, differentiation portion 112 judges that i-th set in step S38 non-gesture symbol stroke is with reference to gesture symbol table is determined
No be included in is determined in the scope that gesture symbol is specified (step S46) by any one.I-th of non-gesture symbol stroke be included in by
In the case of in the scope specified of any one determination gesture symbol (step S46 "Yes"), differentiation portion 112 is by i-th of non-gesture
Symbol stroke setting is used as stroke (step S48) corresponding with character string.On the other hand, do not included in i-th of non-gesture symbol stroke
In the case where being accorded with by determination gesture in the scope specified (step S46 "No"), i-th of non-gesture is accorded with pen by differentiation portion 112
Draw setting and be used as stroke (step S50) corresponding with numerical expression.
Then, processing unit 100 makes the value of variable i plus 1 (step S52), and whether judgment variable i value is that (m is non-gesture to m
Accord with the sum of stroke) below (step S54).In the case of being below m in the value of variable i (step S54 "Yes"), step is transferred to
Rapid S46, processing later repeat step S46 is untill the value of variable i is more than m.
In the case where the value of variable i is more than m (step S54 "No"), identification part 114 using character string recognize engine from
The stroke set as stroke corresponding with character string in step S48 carrys out identification string, using numerical expression recognize engine from
Determine gesture symbol table (coordinate information for being considered as the determination gesture symbol of mark) and as stroke corresponding with numerical expression in step S50
The stroke of middle setting recognizes numerical expression (step S56).Also, display control unit 120 enters to exercise recognition result and (includes character string
Numerical expression) it is shown in the control of display part 190.
Fig. 8 is to show the figure for being particularly shown example under batch mode.In batch mode, display is by user writing and is taken
Enter all strokes (Fig. 8 A) to identifying device, when user indicate the operation of the execution of identification, perform and determine gesture symbol
Identification, the differentiation of character string and numerical expression, the identification of character string and ordered series of numbers, and show recognition result (Fig. 8 C).In addition it is also possible to
After the differentiation of the identification for determining gesture symbol, character string and numerical expression is performed, before the identification of execution character string and ordered series of numbers, such as Fig. 8 B institutes
Show, display determines the result of the differentiation of the recognition result, numerical expression and character string of gesture symbol., will be true in the example shown in Fig. 8 B
Determine gesture symbol BG1、BG2、BG3Determination gesture symbol image BI is replaced into respectively1、BI2、BI3, gesture symbol BG will be determined1、BG2、BG3
Character string " area ", " height ", the color of " width " of encirclement are changed to blueness respectively.
According to present embodiment, import the determination gesture for distinguishing character string and numerical expression and accord with, gesture symbol bag will be determined
The stroke enclosed divides into character string, and the stroke that gesture symbol encirclement is not determined is divided into numerical expression, utilizes character string to recognize engine
It is identified, is clearly distinguished simultaneously thereby, it is possible to the character string and numerical expression that are included numerical expression respectively with numerical expression identification engine
Identify respectively.In addition, when recognizing numerical expression, will determine that gesture symbol and the stroke for according with encirclement by the determination gesture are considered as 1
Mark, the structure elucidation of the numerical expression comprising character string is carried out thereby, it is possible to recognize engine using numerical expression.
In addition, according to present embodiment, in gradually mode, entering to be about to by the determination hand when having write determination gesture symbol
The stroke that gesture symbol is surrounded divides into the processing (Fig. 5 step S16) of character string, in addition, being determined gesture in the stroke write
Symbol enters to be about to the processing (Fig. 5 step S20) that the stroke divides into character string in the case of surrounding, thus, no matter in what when
Machine writing determines gesture symbol, can distinguish character string and numerical expression, it is possible to increase the convenience of user.That is, according to this embodiment party
Formula, is either determined after gesture symbol in the case of written character string (Fig. 3 A), or write true after written character string in writing
Determine in the case of gesture symbol (Fig. 3 B, Fig. 3 C), or it is determined that in the case of adding character string in gesture symbol (Fig. 3 D), can
Make a distinction the processing of character string and numerical expression.
Additionally, this invention is not limited to above-mentioned embodiment, various changes can be carried out.The present invention include with embodiment
The substantially identical composition of composition of explanation is (for example, function, method and result identical are constituted or purpose and effect identical structure
Into).In addition, the present invention is included the composition after the non-intrinsically safe aliquot replacement of the composition illustrated in embodiment.In addition, of the invention
Including playing and the composition of composition identical action effect that illustrates in embodiment or the composition of identical purpose can be reached.
In addition, the present invention includes the composition that known technology is addition of to the composition illustrated in embodiment.
Description of reference numerals
100 processing units, 110 logging units, 112 differentiation portions, 114 identification parts, 120 display control units, 160 character input portions,
170 storage parts, 190 display parts.
Claims (8)
1. a kind of program, the numerical expression of character string is included for the stroke string identification from handwriting input, it is characterised in that
Make computer as logging unit, differentiation portion and identification part function,
Above-mentioned logging unit judges whether the stroke or stroke string of input accord with the determination gesture for distinguishing character string and numerical expression
It is consistent, in the case where being judged as being consistent with above-mentioned determination gesture symbol, logs in according with the scope phase specified by above-mentioned determination gesture
The information of pass,
Being included among the stroke of input is accorded with the stroke in the scope specified by above-mentioned determination gesture and set by above-mentioned differentiation portion
As stroke corresponding with the side in character string and numerical expression, accorded with being not included in by above-mentioned determination gesture in the scope specified
Stroke is set as stroke corresponding with the opposing party in character string and numerical expression,
Above-mentioned identification part recognizes engine from recognizing word as stroke corresponding with character string and the stroke that sets by the use of character string
Symbol string, recognizes engine from recognizing numerical expression as stroke corresponding with numerical expression and the stroke that sets by the use of numerical expression.
2. program according to claim 1, it is characterised in that
Above-mentioned differentiation portion will be wrapped in the case where the stroke or stroke string of input are judged as being consistent with above-mentioned determination gesture symbol
It is contained in and determines that the stroke in the scope that gesture symbol is specified is set as stroke corresponding with the side in character string and numerical expression by this,
In the case where the stroke of input is judged as not being consistent with above-mentioned determination gesture symbol, judge whether the stroke of the input is included in
Accorded with by above-mentioned determination gesture in the scope specified, be included in and accorded with by above-mentioned determination gesture in the scope specified in the stroke of the input
In the case of, it regard the stroke setting of the input as stroke corresponding with the side in character string and numerical expression.
3. program according to claim 1 or 2, it is characterised in that
Being included among the stroke of input is accorded with the stroke in the scope specified by above-mentioned determination gesture and set by above-mentioned differentiation portion
As stroke corresponding with character string, will be not included in by above-mentioned determination gesture accord with stroke setting in the scope specified as with
The corresponding stroke of numerical expression,
The stroke that above-mentioned identification part will be contained in the scope specified by 1 above-mentioned determination gesture symbol is considered as 1 mark, utilizes number
Formula recognizes engine to recognize numerical expression.
4. the program described in any one in claims 1 to 3, it is characterised in that
Computer is also set to be shown in the display control unit function of the control of display part as the stroke string for entering to exercise input,
Above-mentioned display control unit, which enters to exercise, to be judged as according with the stroke being consistent or stroke string as expression with above-mentioned determination gesture
The control shown with the image of the corresponding shape of above-mentioned determination gesture symbol.
5. program according to claim 4, it is characterised in that
The stroke that above-mentioned display control unit enters in the scope for exercising and being included in and being specified by above-mentioned determination gesture symbol is with being not included in
The control for according with the different color of the stroke in the scope specified by above-mentioned determination gesture to show.
6. the program described in any one in claim 1 to 5, it is characterised in that
Above-mentioned logging unit the stroke or stroke string of input formed it is substantially rectangular in the case of, be judged as the stroke or stroke
String is consistent with above-mentioned determination gesture symbol.
7. a kind of information storage medium of embodied on computer readable, it is characterised in that
The program described in any one in the claim 1 to 6 that is stored with.
8. a kind of identifying device,
The numerical expression of character string is included from the stroke string identification of handwriting input, it is characterised in that included：
Logging unit, it judges whether the stroke or stroke string of input accord with phase with the determination gesture for distinguishing character string and numerical expression
Symbol, in the case where being judged as being consistent with above-mentioned determination gesture symbol, is logged in related to the scope specified by above-mentioned determination gesture symbol
Information；
The stroke accorded with by above-mentioned determination gesture in the scope specified that is included among differentiation portion, its stroke by input sets and made
For stroke corresponding with the side in character string and numerical expression, the pen in the scope specified by above-mentioned determination gesture symbol will be not included in
Draw setting and be used as stroke corresponding with the opposing party in character string and numerical expression；And
Identification part, it recognizes engine from recognizing character as stroke corresponding with character string and the stroke that sets by the use of character string
String, recognizes engine from recognizing numerical expression as stroke corresponding with numerical expression and the stroke that sets by the use of numerical expression.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2015009207 | 2015-01-21 | ||
| JP2015-009207 | 2015-01-21 | ||
| PCT/JP2016/051457 WO2016117564A1 (en) | 2015-01-21 | 2016-01-19 | Program, information storage medium, and recognition device |
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| CN107209862A true CN107209862A (en) | 2017-09-26 |
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| CN201680006635.XA Expired - Fee Related CN107209862B (en) | 2015-01-21 | 2016-01-19 | Identification device and information storage medium |
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| JP (1) | JP6694638B2 (en) |
| KR (1) | KR101909485B1 (en) |
| CN (1) | CN107209862B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111079622A (en) * | 2019-12-10 | 2020-04-28 | 黄淮学院 | Method for miniaturizing handwritten text recognizer under unified recognition framework |
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| JP7104965B2 (en) * | 2018-04-23 | 2022-07-22 | 国立大学法人東京農工大学 | Program and clustering device |
| CN111539383B (en) * | 2020-05-22 | 2023-05-05 | 浙江蓝鸽科技有限公司 | Formula knowledge point identification method and device |
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| KR20170100541A (en) | 2017-09-04 |
| JPWO2016117564A1 (en) | 2017-10-26 |
| WO2016117564A1 (en) | 2016-07-28 |
| CN107209862B (en) | 2021-03-09 |
| KR101909485B1 (en) | 2018-10-18 |
| JP6694638B2 (en) | 2020-05-20 |
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