CN102135838A - Method and system for partitioned input of handwritten character string - Google Patents
Method and system for partitioned input of handwritten character string Download PDFInfo
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- CN102135838A CN102135838A CN2011101153621A CN201110115362A CN102135838A CN 102135838 A CN102135838 A CN 102135838A CN 2011101153621 A CN2011101153621 A CN 2011101153621A CN 201110115362 A CN201110115362 A CN 201110115362A CN 102135838 A CN102135838 A CN 102135838A
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Abstract
Description
Technical field
The present invention relates to the technology of handwritten input information, relate in particular to a kind of method and system of subregion inputting characters by handwriting string.
Background technology
Intelligent terminal began to popularize on a large scale in recent years, and the influence power of smart mobile phone and panel computer is particularly important.People are more and more higher to the requirement of input method, inputting method can not satisfy the demand that these have only the mobile device of touch-screen, at first carry out the transition to the soft keyboard input from the hard manual input, the feel of user's input can not have sense of touch as originally, secondly a lot of users also begin to directly hand-written demand arranged, and therefore hand-writing input method is born.People have also proposed harsh more requirement to the ease for use of hand-writing input method, can discern the more language except requiring hand-writing input method, and its input speed, ease for use and accuracy are also had higher requirement.
At present, a kind of hand-writing input method that prior art provides by set up language handoff functionality key on the panel of input method, realizes switching different language input modes when realizing that multilingual is imported simultaneously.For example, under Chinese handwriting input state,, need to click switch key, hand-writing input method is switched to English status recognition realize English handwriting input identification if the user has the English requirement of input.This method needs user's click function key switching load module repeatedly, so recognition efficiency is low, and user's complex operation.At the problems referred to above, it is the patented claim " a kind of hand-written inputting method, device and user terminal " of CN101515211A that this case applicant proposes publication number on February 22nd, 2008, on input panel by dividing region being carried out the handwriting recognition of different language, improve user's handwriting input efficient, but Chinese and English input mode can only be individual characters.
Existing hand-written inputting method under multiword identification input state, can import the capable or western language line of text of Chinese text, but the recognition accuracy that adopts the mixing identification range to discern is lower.In addition,, still need user's click keys switch languages input pattern repeatedly if want to improve the input accuracy rate, more loaded down with trivial details in the operation, reduced user's handwriting input efficient.And the shared space of button is more on the existing handwriting input panel, thereby the input area area is less, and then causes handwriting input efficient low.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of will be on the man-machine interaction panel subregion input and character string discern the method and system of the subregion inputting characters by handwriting string that combines.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of method of subregion inputting characters by handwriting string is used on the subscriber equipment that comprises the man-machine interaction panel, and this method comprises:
Step 10 is gathered person's handwriting from the hand-written district of man-machine interaction panel;
Step 20, the person's handwriting that identification is gathered are character string person's handwriting or order gesture person's handwriting;
Step 30 is if the character string person's handwriting is then discerned the person's handwriting of being gathered in the default character string input area corresponding characters string identification range at the person's handwriting place of being gathered.
Described step 30 further comprises:
Step 301 judges whether this person's handwriting is positioned at same character string input area;
Step 302 if the person's handwriting of being gathered is positioned at same character string input area, then adopts the person's handwriting of being gathered with this input area corresponding characters string identification range identification; Otherwise, adopt the intersection or the predefined identification range of all character string input areas character string identification range separately to discern the person's handwriting of being gathered.
Before gathering person's handwriting, also be included in hand-written district and set in advance at least two character string input areas, the character string identification range that different character string input areas is corresponding different.Described character string input area is adjacent in twos, and perhaps, described character string input area intersects in twos.
Step 301 further comprises: when input area is adjacent, described person's handwriting all or the part that is not less than preset proportion when same input area, think that this person's handwriting is positioned at same character string input area.
This method also comprises step 40, if pick out order gesture person's handwriting in step 20, then determines the order gesture of this order gesture person's handwriting correspondence and carries out corresponding order.Described order gesture comprises the gesture of opening monocase input area order correspondence.
Described monocase input area comprises at least one monocase input sub-district.Import sub-districts when the monocase input area comprises at least two monocases, the monocase identification range of described monocase input sub-district correspondence preestablishes or is determined by the character string identification range of this monocase input character string input area that the sub-district covered.
A kind of system that is used to realize the method for subregion inputting characters by handwriting string comprises:
Input person's handwriting collecting unit is used for from the person's handwriting of the hand-written district collection handwriting input of man-machine interaction panel;
The person's handwriting taxon, being used for the person's handwriting that identification gathers is character string person's handwriting or order gesture person's handwriting;
The character string recognition unit is used for discerning the person's handwriting of being gathered in the input area corresponding characters string identification range at person's handwriting place when the person's handwriting taxon determines that the person's handwriting of being gathered is the character string person's handwriting.
Wherein, described character string recognition unit, be used to determine whether the person's handwriting of being gathered is positioned at same input area, discern if then adopt to identify the handwriting with this zone corresponding characters string identification range at same input area, otherwise, adopt the identification range of the intersection of all input areas character string identification range separately or setting to identify the handwriting and discern.
This system also comprises command executing unit, is used for the person's handwriting of recognition command gesture, determines the order gesture of this person's handwriting correspondence, carries out order accordingly.
The main advantage of the present invention is as follows:
1. be primarily aimed at the deficiency of the input method identifiable language switching of existing hand-writing input method existence, when short sentence identification is carried out in proposition under an interface, thereby the difference that reaches identification range by the handwriting area difference is carried out the identification of corresponding language, has both improved recognition efficiency from input mode and has also improved input efficiency;
2. character string identification combines with individual character identification, has not only improved recognition speed but also improved recognition accuracy;
3. introduce the control gesture, replace the control button, reduced the space of the handwriting area on the man-machine interaction panel that the control button takies, enlarged the area in effective handwriting input zone.
Description of drawings
Fig. 1 illustrates the method flow diagram of subregion inputting characters by handwriting string of the present invention;
Fig. 2 a illustrates an example of the character string input field of man-machine interaction panel among the present invention;
Fig. 2 b illustrates another example of the character string input field of man-machine interaction panel among the present invention;
Fig. 3 a illustrates an example opening monocase input field gesture;
Fig. 3 b illustrates an example hiding monocase input field gesture;
Fig. 3 c illustrates an example that switches the identification range gesture;
Fig. 3 d is illustrated in an example of top character string input area input of character string person's handwriting;
Fig. 3 e is illustrated in an example of two input area input of character string person's handwritings;
Fig. 4 is the process flow diagram of the method for the described subregion inputting characters by handwriting of one embodiment of the invention string;
Fig. 5 is the structural representation of the described subregion inputting characters by handwriting of another embodiment of the present invention string system.
Embodiment
The method of subregion inputting characters by handwriting string of the present invention is applied on the subscriber equipment that comprises the man-machine interaction panel, by the man-machine interaction panel being divided into a plurality of handwriting inputs zone, the corresponding different character string identification range of different handwriting areas is set, thereby carry out the character string identification of corresponding language, both improved recognition efficiency and also improved input efficiency from input mode, and by order gesture switching handwriting area, reduce the space of the handwriting area on the man-machine interaction panel that the control button takies, enlarged the area in effective handwriting input zone.As shown in Figure 1, this method comprises:
Step 10 is gathered person's handwriting from the hand-written district of man-machine interaction panel;
Step 20, the person's handwriting that identification is gathered are character string person's handwriting or order gesture person's handwriting;
Step 30 if the person's handwriting of being gathered is the character string person's handwriting, is then discerned the person's handwriting of being gathered in the character string input area corresponding characters string identification range at the person's handwriting place of gathering.
During concrete enforcement, before gathering person's handwriting, at first the hand-written zoning of man-machine interaction panel to be divided at least two input areas from the hand-written district of man-machine interaction panel.
Shown in Fig. 2 a and Fig. 2 b, the man-machine interaction panel mainly is divided into viewing area 11 and hand-written district 12.Wherein, viewing area 11 comprises candidate word/associational word viewing area.Hand-written district 12 is divided at least two input areas that are used to import dissimilar character strings, the character string identification range that different input areas is corresponding different.Though Fig. 2 a has only provided the example that hand-written district 12 is divided into two input areas, should be understood that, kind careful more to string sort or the character string that can import is many more, and the input area that hand-written district is divided is then many more.According to the characteristics of character string and the size of handwriting area, preferably, handwriting area is divided at least two input areas of arranging up and down, adjacent input area can be overlapped (intersecting in twos shown in Fig. 2 b), also can not overlapping (adjacent in twos shown in Fig. 2 a), the size of different input areas can be identical, also can be different.At least two input areas of arranging about yet handwriting area can being divided into, the present invention does not limit this.Different input areas can be set to corresponding different character recognition scopes.Be two input areas to arrange up and down now: first input area and second input area are that example describes, the identification range that the first input area correspondence is set is first identification range, and the identification range of the second input area correspondence is second identification range.In order to realize importing Chinese character string and English character string, can set top is English character string input area, character string in this zone input is discerned with first identification range, the bottom is a Chinese character string input area, discerns with second identification range in the character string of this zone input.Described first identification range comprises: English word, punctuation mark, numeral and gesture symbol etc.; Described second identification range comprises: Chinese word, punctuation mark, numeral and gesture symbol etc.When input area is many, for different input areas, the icon or the button that show this zone corresponding characters identification range can also be set at the edge of input area, as " English " among Fig. 2 a and " Chinese ", be convenient to the user and understand current input area corresponding characters identification range.Can indicate the division of input area on the man-machine interaction panel by the edge line that shows input area.
The method flow of the described subregion inputting characters by handwriting of one embodiment of the invention string as shown in Figure 4.
Above-mentioned steps 10 is gathered person's handwriting from the hand-written district 12 of man-machine interaction panel, specifically implements as follows.
The person's handwriting of handwriting input is divided into two kinds, and first kind is the character string person's handwriting, promptly writes the literal of kinds of characters collection or the person's handwriting of symbol; Second kind is order gesture person's handwriting, promptly writes the person's handwriting of the order gesture of switch languages or input area.In writing process, system is according to the touch signal of gathering from the hand-written district 12 of man-machine interaction panel, send the message of starting to write that comprises the touch point coordinate, move a message and lift a message to input person's handwriting collecting unit, usually in the setting a period of time (as 0.5 second) of receiving after lifting a message, do not receive the message or received of starting to write once more, think current person's handwriting end of input the starting to write during message of other zones except that hand-written district.Input person's handwriting collecting unit extracts person's handwriting point coordinate wherein according to the order of the message of receiving, and according to the type of message of receiving, inserts the stroke end mark, forms the person's handwriting of handwriting input.
In the above-mentioned steps 20, the person's handwriting of being gathered is carried out identification, judge that it is that the character string person's handwriting is still ordered the gesture person's handwriting.
The input of order gesture person's handwriting has certain requirement usually, such as the requirement to the position of starting to write, moving direction, stroke length etc.Order gesture in this example comprises opens monocase input area gesture, hiding monocase input area gesture, switching character string identification range gesture.When the monocase input area is arranged on the right half part in hand-written district, open monocase input area order gesture for draw straight line from oblique lower-left, the upper right corner in hand-written district above certain-length, shown in Fig. 3 a, perhaps oblique upper left stroke of straight line that surpasses certain-length from the lower right corner in hand-written district; Hide monocase input area gesture and to open monocase input area order gesture opposite, be oblique upper right stroke of straight line that surpasses certain-length from the monocase handwriting area lower left corner, shown in Fig. 3 b, perhaps draw straight line above certain-length from oblique bottom right, the monocase handwriting area upper left corner.When the monocase input area is arranged on the left-half in hand-written district, open monocase input area order gesture for draw straight line from oblique bottom right, the upper left corner in hand-written district above certain-length, not shown; Hide monocase input area gesture and be from the monocase handwriting area lower right corner oblique upper left stroke of straight line that surpasses certain-length, not shown.Switch character string identification range gesture for streak the straight line of certain-length to fixed-direction at different input areas, shown in Fig. 3 c, said fixed-direction is generally the edge of input area, and the character string person's handwriting generally includes at least one pen, stroke direction is unfixing, the two-end-point of stroke can not exceed input area, shown in Fig. 3 d.Therefore, judge that according to number of strokes, the position of starting to write, moving direction and person's handwriting length the input person's handwriting is character string person's handwriting or order gesture person's handwriting.
In the above-mentioned steps 30, judge at first whether identification result is the character string person's handwriting, if the person's handwriting of gathering is that the character string person's handwriting is then carried out identifying operation, if the person's handwriting of gathering is order gesture person's handwriting execution in step 40.
Above-mentioned steps 30 further comprises:
Step 301 for the character string person's handwriting of gathering, judges whether this person's handwriting is arranged in the same input area of above-mentioned at least two input areas.
When a plurality of input areas of arranging when hand-written district are not overlapping mutually, if all character string person's handwritings in same input area or the character string person's handwriting greater than the part of preset proportion at same input area, think that then the character string person's handwriting is at same input area.Described preset proportion is determined according to the size of input area.To set this ratio is 90 percent to be example, when person's handwriting is positioned at the same area more than or equal to 90 percent part, thinks that then this input of character string person's handwriting is positioned at same input area.On the contrary, person's handwriting is positioned at a zone less than 90 percent part, and the part greater than 10 is positioned at other zones, thinks that then this input of character string person's handwriting is positioned at different input areas.
Intersect when the handwriting input zone, when promptly there is lap in the handwriting input zone, in same input area, then think the character string person's handwriting at same input area as if all character string person's handwritings, otherwise, think that the character string person's handwriting is positioned at different input areas.
Step 302, if the character string person's handwriting of gathering is positioned at same input area, then adopt with this input area corresponding characters string identification range and cognizance code and discern the person's handwriting of being gathered, otherwise, adopt the intersection or the predefined identification range of the identification range of each input area correspondence to discern the person's handwriting of being gathered.
This example top input area is set to English input area, corresponding first identification range, and the below input area is set to the input in Chinese zone, corresponding second identification range.Shown in Fig. 3 d, collect the character string person's handwriting of the input of input area up after, judge through step 301 to obtain this character string person's handwriting at first input area (English input area), therefore adopt first identification range to come the identification string person's handwriting.When the character string input person's handwriting of gathering, part person's handwriting is in first input field, part person's handwriting is in second input field, shown in Fig. 3 e, judge not at same input area through step 301, then adopt the intersection of first identification range and second identification range to come the character string person's handwriting of Recognition and Acquisition, comprising: Chinese word, English word, Chinese and English punctuation mark, numeral and gesture symbol etc., can discern Chinese and English short sentence this moment.Perhaps adopt predefined identification range to discern, as preestablish, just adopt Chinese character string identification range to come the identification string person's handwriting as long as the character string person's handwriting of input exceeds English input area.Because all input is all in identical input panel input, but needn't click keys switch languages input pattern, therefore improved input efficiency.
During concrete enforcement, this method also comprises step 303, according to the character string recognition result according to sort from high to low each candidate word and output to candidate word/associational word viewing area of matching degree.
Through after the step 302, obtain the identification candidate result of input of character string person's handwriting, and the result that all meet is sorted from high to low according to matching degree, and be shown to candidate word successively in order/the associational word viewing area.Particularly, if at the edit commands gesture person's handwriting of handwriting input zone handwriting input input system definition, after identification, when the first identification candidate result of acquisition is edit commands, as deletion, insertion space, backspace etc., this method can directly be carried out corresponding operation according to recognition result.
Step 40 is determined the order of order gesture person's handwriting correspondence, carries out order accordingly.
When identification result in step 20 is order gesture person's handwriting, need to determine the specific instructions of described order gesture person's handwriting correspondence.The mentioned order gesture comprises opens monocase input area gesture, hiding monocase input area gesture, switching character string identification range gesture.Respectively order the mode of operation of gesture to draw according to the gesture of enumerating in the step 20, just can judge the classification of order gesture according to the person's handwriting direction of gesture.
When the order gesture when opening the monocase input area, open the monocase input area in the position of setting.This monocase input area can be a monocase input sub-district, also can import the input area that the sub-district is formed by a plurality of monocases.Preferably, shown in Fig. 3 b, this monocase input area is by forming with the same number of input sub-district, input field of arranging up and down, and each character recognition scope of importing the sub-district corresponds respectively to corresponding input area.In this example, the monocase input area is made up of two input sub-districts of arranging up and down, and the character recognition scope of input sub-district, top is English alphabet or DBC case, and the character recognition scope of input sub-district, bottom is Chinese character or SBC case.Each import the sub-district can also about arrange, each character recognition scope of importing the sub-district also can freely define.Hand-written in the individual character input area of opening, if the monocase input area comprises a plurality of inputs sub-district, judge at first whether the person's handwriting of gathering is positioned at same input sub-district, if, then adopt the person's handwriting of the monocase identification range Recognition and Acquisition of this input sub-district correspondence, otherwise, adopt the person's handwriting of intersection Recognition and Acquisition of the monocase identification range of each monocase input sub-district correspondence.If the monocase input area is a monocase input sub-district, adopt the monocase identification range of setting that comprises a plurality of monocase identification range intersections to come the person's handwriting that is positioned at monocase input sub-district of Recognition and Acquisition.
When the user inputs character string, more complicated in the character string or write not carefully and neatly done character may identification error, when needs are revised the character string of identification error or are imported single character, open or hide the monocase input area by the utility command gesture, can make higher, the better effects if of character string input efficiency.
When judging that the order gesture is when hiding monocase handwriting area gesture, to hide the monocase handwriting area, reenters hand-written character string state.
When judging that the order gesture is identification range switching gesture, according to predefined identification range transfer sequence, the identification range of the input area at switching command gesture person's handwriting place.The order gesture is switched identification range and is applicable to when actual input area number is less than the character string identification range.For example, the hand-written zoning of man-machine interaction panel is divided into two input areas, the character string of actual needs input comprises: English character string, Chinese character string, Korea character string, Japanese character string etc., corresponding four the character string identification ranges of two input areas this moment need to switch identification range.
Be example just above, be appreciated that input area is not limited to two with the hand-written district of two input areas of arranging up and down, can also be more; The arrangement mode of input area can be arranged above and below also can about arrange, determine according to the operating position of actual man-machine interaction panel.The individual character input area also can be opened in the hand-written district that has more than two input areas, and can open in the position different with position shown in Fig. 3 b, when hiding individual character input area, as long as make and open this regional opposite gesture of gesture direction.Described individual character input area can be divided into the monocase input area of the different identification ranges of a plurality of correspondences.
The present invention realizes having the order that realizes by button in the man-machine interaction panel now by the order gesture, and the button display space in the man-machine interaction panel is saved, and can be used as the handwriting input space, and handwriting input zone proportion in panel is increased.
As shown in Figure 5, the present invention is used for realizing that the system of the subregion inputting characters by handwriting string of said method comprises man-machine interaction panel, input person's handwriting collecting unit, person's handwriting identification unit and character string recognition unit.Structure, effect and the annexation of each unit will be described below.
The man-machine interaction panel comprises being used for to the viewing area 11 of user's display message and the hand-written district 12 of reception user handwriting input.Wherein, viewing area 11 comprises candidate word/associational word viewing area.Hand-written district 12 is divided at least two input areas that are used to import dissimilar character strings, the character string identification range that different input areas is corresponding different.
Input person's handwriting collecting unit is used for gathering the person's handwriting of handwriting input from the hand-written district 12 of man-machine interaction panel.
The person's handwriting taxon; being used for person's handwriting that identification input person's handwriting collecting unit gathered belongs to the character string person's handwriting and still orders the gesture person's handwriting; and the input person's handwriting that will be recognized as the character string person's handwriting sends to the character string recognition unit, will order the gesture person's handwriting to send to command executing unit.
The order gesture comprises: open monocase input area gesture, hide monocase input area gesture and switch character string identification range gesture.Command executing unit receives orders behind the gesture person's handwriting, at first judges the order classification of person's handwriting correspondence, when being judged as when pulling out the order of monocase input area, at corresponding position display monocase input area; When being judged as when hiding the order of monocase input area, cancellation shows this monocase input area; When being judged as the order of switching character string identification range, switch the identification range of person's handwriting place character string input area according to identification range transfer sequence of setting and person's handwriting place character string input area.
The character string recognition unit, be used to determine whether the person's handwriting of being gathered is positioned at same input area and adopts to identify the handwriting with this zone corresponding characters string identification range and character string cognizance code and discern, and when the person's handwriting of being gathered is arranged in two above input areas wherein, adopt the intersection of all input areas identification range separately or predefined character string identification range to identify the handwriting and discern.
The method and system of subregion inputting characters by handwriting string of the present invention is applied on the subscriber equipment that comprises the man-machine interaction panel, by the man-machine interaction panel being divided into a plurality of handwriting inputs zone, the corresponding different character string identification range of different handwriting areas is set, thereby carry out the character string identification of corresponding language, both improved recognition efficiency and also improved input efficiency from input mode, and by order gesture switching handwriting area, reduce the space of the handwriting area on the man-machine interaction panel that the control button takies, enlarged the area in effective handwriting input zone.
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| CN2011101153621A CN102135838A (en) | 2011-05-05 | 2011-05-05 | Method and system for partitioned input of handwritten character string |
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