CN107622245A - Papery Wave shape extracting method and device - Google Patents
Papery Wave shape extracting method and device Download PDFInfo
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- CN107622245A CN107622245A CN201710879627.2A CN201710879627A CN107622245A CN 107622245 A CN107622245 A CN 107622245A CN 201710879627 A CN201710879627 A CN 201710879627A CN 107622245 A CN107622245 A CN 107622245A
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Abstract
The invention provides a kind of papery Wave shape extracting method and device, this method is first isolated the waveform in electrocardio report figure and character area by threshold method, pass through projected outline's method again, obtain complete lead wave regions, again by lead waveform partition into more sub-regions, in the case that the lead waveform pixel of subregion is not lost, pass through the most characteristic of the number of pixels of lead waveform connected region, significantly it can distinguish with lead symbol, lead separator, lead waveform can be disposably extracted, and without project the positioning of threshold value；When the wave regions of subregion do not connect, by the determination methods of distance, row distance is entered to the connected region in subregion and compared, filter out closest, the connected region for belonging to wave regions carries out head and the tail merging, the wave regions of a connection is generated, so as to extract lead waveform.Can solve the problems, such as traditional threshold-project method can not accurately extract and part special waveform be present.
Description
Technical field
The present invention relates to data processing field, in particular to a kind of papery Wave shape extracting method and device.
Background technology
Electrocardiogram is the important detection methods of Diagnosing Cardiac disease, and most electrocardio report is recorded by thermal printing paper,
Due to the chemical characteristic of thermal printing paper and storage condition, printing graph color can be thin out, and picture quality is deteriorated, even
Paper sheet break so that typical clinical electrocardiosignal can not preserve for a long time.If by the electrocardio paper shelves report of reservation by swashing
Optical printer or digital camera are converted to picture, then by image processing techniques, the Wave data in picture are extracted, by picture
Wavy curve digitlization, then achieved with certain form, not only contribute to management of the hospital to patient information, clinician
Teaching and scientific research, doctor can also utilize obtain mass data heart disease is done more become more meticulous quantitative statisticses analysis and
Diagnosis, more, more accurate clinical criteria is excavated out, is improved to patient's condition-inference accuracy.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of papery Wave shape extracting method and device, can
Papery Wave data is digitized.
In a first aspect, the embodiments of the invention provide a kind of papery Wave shape extracting method, methods described includes：Obtain electrocardio
Report figure data, the background grid region included by the electrocardio report figure is isolated based on threshold method, obtain waveform and
Character area；Based on projected outline's method, the upper and lower, left and right border of acquisition lead waveform in the waveform and character area
Position, extract the complete lead waveform；According to the upper and lower, left and right boundary position and electrocardio report figure institute
Including printing imposition layout, by the lead waveform partition into more sub-regions；Connected region is carried out to each subregion
Field mark, obtain the first connected region of the sign waveform in each subregion and characterize lead separator and lead symbol
Number the second connected region；Each the distance between second connected region and first connected region are calculated, deletes institute
Second connected region that distance is more than preset value is stated, obtains the second target connected region；Judge the second target connection
Whether region is lead separator；If it is not, first connected region is merged with second connected region, first is obtained
Target connected region；The first object connected region in each subregion of extraction, obtains Wave data.
Second aspect, the embodiments of the invention provide a kind of papery waveform extracting device, described device includes：First obtains
Module, for obtaining the data of electrocardio report figure, the background grid included by the electrocardio report figure is isolated based on threshold method
Region, obtain waveform and character area；Projection module, for based on projected outline's method, in the waveform and character area
The middle upper and lower, left and right boundary position for obtaining lead waveform, extract the complete lead waveform；Split module, for root
According to the included printing imposition layout of the upper and lower, left and right boundary position and electrocardio report figure, by the lead ripple
Shape is divided into more sub-regions；Second acquisition module, for carrying out connected component labeling to each subregion, obtain each
First connected region of the sign waveform in the subregion and the second connected region for characterizing lead separator and lead symbol
Domain；Removing module, for calculating the distance between each second connected region and first connected region, described in deletion
Distance is more than second connected region of preset value, obtains the second target connected region；Judge module, for judging described
Whether two target connected regions are lead separator；Judge execution module, for the judge module judge be not when, by institute
State the first connected region with second connected region to merge, obtain first object connected region；Extraction module, it is every for extracting
The first object connected region in the individual subregion, obtains Wave data.
Compared with prior art, the papery Wave shape extracting method and the beneficial effect of device that various embodiments of the present invention propose
It is：First the waveform in electrocardio report figure and character area are isolated by threshold method, then by projected outline's method, obtained
Whole lead wave regions, further according to electrocardiosignal arrange an order according to class and grade printing layout by lead waveform partition into more sub-regions, according to even
Logical zone marker principle, in the case that the lead waveform pixel of subregion is not lost, pass through lead waveform connected region
The most characteristic of number of pixels, it can significantly distinguish with lead symbol, lead separator, can disposably extract lead ripple
Shape, and without project the positioning of threshold value；It is right by the determination methods of distance when the wave regions of subregion do not connect
Connected region in subregion is entered row distance and compared, filter out it is closest, belong to wave regions connected region carry out head and the tail
Merge, the wave regions of a connection are generated, so as to extract lead waveform.Can solve traditional threshold-project method can not be accurate
The problem of part special waveform (such as pixel is lost, waveform fracture) be present in true extraction.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structured flowchart of user terminal provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart for papery Wave shape extracting method that first embodiment of the invention provides；
Fig. 3 is the flow chart for another papery Wave shape extracting method that first embodiment of the invention provides；
Fig. 4 is a kind of structured flowchart for papery waveform extracting device that second embodiment of the invention provides.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be configured to arrange and design with a variety of herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
As shown in figure 1, it is the block diagram of user terminal 100.The user terminal 100 can be PC
(personal computer, PC), tablet personal computer, personal digital assistant (personal digital assistant, PDA)
Deng.
The user terminal 100 includes：Papery waveform extracting device, memory 110, storage control 120, processor
130th, Peripheral Interface 140, input-output unit 150, audio unit 160, display unit 170.
The memory 110, storage control 120, processor 130, Peripheral Interface 140, input-output unit 150, sound
Frequency unit 160 and 170 each element of display unit are directly or indirectly electrically connected between each other, with realize the transmission of data or
Interaction.It is electrically connected with for example, these elements can be realized by one or more communication bus or signal wire between each other.The paper
Matter waveform extracting device can be stored in the memory 110 including at least one in the form of software or firmware (firmware)
Or it is solidificated in the software function module in the operating system (operating system, OS) of client device.The processor
130 are used to perform the executable module stored in memory 110, such as the software function that the papery waveform extracting device includes
Module or computer program.
Wherein, memory 110 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only storage (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Wherein, memory 110 is used for storage program, and the processor 130 performs described program after execute instruction is received, foregoing
The method for the flow definition that any embodiment of the embodiment of the present invention discloses can apply in processor 130, or by processor
130 realize.
Processor 130 is probably a kind of IC chip, has the disposal ability of signal.Above-mentioned processor 130 can
To be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit
(Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), application specific integrated circuit (ASIC),
Ready-made programmable gate array (FPGA) either other PLDs, discrete gate or transistor logic, discrete hard
Part component.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor
Can be microprocessor or the processor can also be any conventional processor etc..
Various input/output devices are coupled to processor 130 and memory 110 by the Peripheral Interface 140.At some
In embodiment, Peripheral Interface 140, processor 130 and storage control 120 can be realized in one single chip.Other one
In a little examples, they can be realized by independent chip respectively.
Input-output unit 150 is used to be supplied to user input data to realize interacting for user and user terminal 100.It is described
Input-output unit 150 may be, but not limited to, mouse and keyboard etc..
Audio unit 160 provides a user COBBAIF, and it may include one or more microphones, one or more raises
Sound device and voicefrequency circuit.
Display unit 170 provides an interactive interface (such as user interface) between user terminal 100 and user
Or referred to for display image data to user.In the present embodiment, the display unit 170 can be liquid crystal display or touch
Control display.If touch control display, it can be that the capacitance type touch control screen or resistance-type for supporting single-point and multi-point touch operation touch
Control screen etc..Single-point and multi-point touch operation is supported to refer to that touch control display can sense on the touch control display one or more
Individual opening position is with caused touch control operation, and the touch control operation that this is sensed transfers to processor 130 to be calculated and handled.
First embodiment
It refer to Fig. 2, Fig. 2 is a kind of flow chart for papery Wave shape extracting method that first embodiment of the invention provides, institute
State method and be applied to client.The flow shown in Fig. 2 will be described in detail below, methods described includes：
Step S110：The data of electrocardio report figure are obtained, are isolated based on threshold method included by the electrocardio report figure
Background grid region, obtain waveform and character area.
Because the thermal printing paper of electrocardio report figure is all pink background grid, the curve and word of printing are black
Color, the picture of printed report is cromogram, according to RGB combined color image principles, the song of pink background grid and black
Line has obvious difference in the threshold value of R, G, B layer picture, isolates grid and curve word according to threshold value offset, generates one
The only black and white picture of curve and word, curve and word are white, and gray scale 255, background process is black, gray scale 0.By
In the resolution ratio of image and the resolution differences of laser printer, the picture of only curve and word there may be scattered noise
Signal, in order to obtain clean complete curve, median filter process is carried out to picture, noise jamming is removed, waveform can be obtained
And character area.
Step S120：Based on projected outline's method, obtained in the waveform and character area lead waveform it is upper and lower,
Left and right boundary position, extract the complete lead waveform.
Wherein, the lead waveform is generally 12 lead waveforms.
Due to interstitial spaces between word and waveform be present in electrocardio report figure, and it is distributed rectangular, therefore, can be with
Rectangular coordinate system is established in waveform and character area, then using projected outline's method, Y-axis extremely is projected, calculates projecting direction
Pixel it is cumulative and, pixel and be 0 after current line projection, next line projected pixel and more than 0 illustrates that the line position is set to lay edges
Battery limit (BL) domain, the upper and lower border of waveform signal whole region in waveform and character area is found by the characteristic.Similarly, can be with
Projection X-axis extremely, calculate projecting direction pixel it is cumulative and, pixel and be 0 after current line projection, next column projected pixel and big
In 0, it is blank borderline region to illustrate the column position, and the whole area of waveform signal in waveform and character area is found by the characteristic
Left margin (left_start_postion), the right margin (right_end_postion) in domain.Left margin characterizes pixel in X-axis
On origin coordinates, right margin characterizes terminal point coordinate of the pixel in X-axis.
Client can extract the complete lead waveform based on the border up and down of waveform signal.
Step S130：Arranged according to the printing that the upper and lower, left and right boundary position and electrocardio report figure are included
Version layout, by the lead waveform partition into more sub-regions.
The manufacturer of each electrocardiograph is to use matrix form piecemeal print processing, electrocardio when printing electrocardio report
The printing model of figure machine is common to be had：3 × 4,6 × 2,12 × 1 these three, according to matrix typesetting rule, in printed report most
The centre position in left side or leftmost or often row lead signals rightmost side printing calibration symbol that often row lead signals start, phase
Adjacent lead waveform is separated by separator, usually dotted line or solid line.The printing typesetting cloth of electrocardio report figure acquired in client
Office can characterize the printing model of electrocardiograph.
If 3 × 4 situation, pass through matrix square-shaped printing layout characteristic and left margin and the right of lead waveform
Boundary is reference, and often row lead regional extent is substantially：(right_end_postion-left_start_postion)/4, often go
The scope of lead waveform is divided into 4 sub-regions.Similarly, the situation if 6 × 2, often the scope in row lead region be：
(right_end_postion-left_start_postion)/2, often row lead waveform is divided into 2 sub-regions.
3 kinds of elements are included in each subregion：Lead waveform, lead symbol and lead separator, these three elements
Be spatially separate completely, independent connected region.
Step S140：Connected component labeling is carried out to each subregion, obtains the sign in each subregion
First connected region of waveform and the second connected region for characterizing lead separator and lead symbol.
In one set, the element to communicate with each other forms a region, and disconnected point forms different regions.
Communicated with each other the set a little formed, referred to as a connected region by all points, and connected component labeling is exactly by a set
In belong to the elements of different connected regions and distinguish.
Connected component labeling can be carried out to each subregion, obtain multiple connected regions, such as obtain lead ripple
Shape connected region, lead symbol connected region and lead separator connected region, the area is saved in each connected region subset
Horizontal stroke, the ordinate value of domain pixel.
Because lead symbol is made up of letter, such as I, aVR, aVL, V1, V3 etc., 1 connected region may be labeled as
Domain (such as I), as the lead symbol (such as between aVR, aVL, V1, V3 these adjacent letters pixel not connected) of tiled configuration
2 different connected region set can be marked as.It is unremitting in waveform pixel but lead waveform has continuous particularity
In the case of, only it can be labeled as 1 connected region.According to this characteristic, the pixel value that can obtain each connected region is total；
Using a maximum connected region of pixel value sum as the first connected region for characterizing waveform, using remaining connected region as table
Levy the second connected region of lead separator and lead symbol.
, therefore, can when isolating net region because background grid region may overlap with the lead waveform of a part
A part of lead waveform can be caused to be removed, cause the partial pixel of the first connected region to lose, curve becomes fracture, endless
It is whole.And the lead waveform that the curve for being broken but not being removed is formed can be erroneously interpreted as characterizing lead separator or lead
Join the second connected region of symbol.Therefore, it is necessary to by the first connected region, the pixel of loss and the pixel of fracture reduce.
Step S150：Each the distance between second connected region and first connected region are calculated, deletes institute
Second connected region that distance is more than preset value is stated, obtains the second target connected region.
It is possible to further extract the pixel of the beginning and end of the second connected region and each first connected region
Position, calculate each the distance between second connected region and first connected region.Due to two adjacent connections
In region, the pixel and the pixel distance of the latter connected region starting position of previous connected region end position are nearest, because
This, it is to characterize lead symbol that can regard as the second connected region for being more than pre-determined distance value with the distance of the first connected region
The second connected region.The second connected region in second connected region, characterizing lead symbol is deleted, obtains the second target company
Logical region.Now, the second target connected region, it may be possible to characterize lead separator or lead symbol, it is also possible to characterize disconnected
The lead waveform split.
Step S160：Judge whether the second target connected region is lead separator.
Because lead separator is in the left and right ends of subregion, lead symbol is in the upper left side position of subregion, therefore,
The abscissa scope of each second target connected region can be obtained, the abscissa scope and default first preset range are entered
Row compares, and judges whether the second target connected region is lead separator or lead symbol, the first preset range table
The left border and right side boundary of each subregion of sign.If the abscissa scope in first preset range,
It is lead separator or lead symbol to judge the second target connected region.Otherwise, the second target connected region is not led then
Join separator or lead symbol.
Step S170：If it is not, first connected region is merged with the second target connected region, first is obtained
Target connected region.
If there is no lead separator or lead symbol in the second target connected region, then by first connected region with
Second connected region merges according to distance is most short, obtains first object connected region.It is possible to further by described in
The head and the tail pixel of first connected region and the second target connected region is arranged to 255, and the region of fracture is linked up, obtained
First object connected region.
Step S180：The first object connected region in each subregion of extraction, obtains Wave data.
In addition, as a kind of embodiment, Fig. 3 is refer to, step S170 can also include：
Step S171：If so, the second target connected region for characterizing the lead separator or lead symbol is deleted
Remove, first connected region is merged with the remaining second target connected region, obtains first object connected region.
The beneficial effect of a kind of papery Wave shape extracting method that first embodiment of the invention provides is：First will by threshold method
Waveform and character area in electrocardio report figure are isolated, then by projected outline's method, obtain complete lead wave regions,
Further according to electrocardiosignal arrange an order according to class and grade printing layout by lead waveform partition into more sub-regions, according to connected component labeling principle, when
In the case that the lead waveform pixel of subregion is not lost, pass through the most spy of the number of pixels of lead waveform connected region
Property, it can significantly distinguish with lead symbol, lead separator, can disposably extract lead waveform, and without being thrown
The positioning of shadow threshold value；When the wave regions of subregion do not connect, by the determination methods of distance, to the connected region in subregion
Domain is entered row distance and compared, filter out it is closest, belong to wave regions connected region carry out head and the tail merging, generate one connection
Wave regions, so as to extract lead waveform.Can solve traditional threshold-project method and can not accurately extract part be present
The problem of special waveform (such as pixel is lost, waveform fracture).
Second embodiment
Fig. 4 is refer to, Fig. 4 is a kind of structural frames for papery waveform extracting device 400 that second embodiment of the invention provides
Figure.The structured flowchart shown in Fig. 4 will be illustrated below, shown device includes：
First acquisition module 410, for obtaining the data of electrocardio report figure, the electrocardio report is isolated based on threshold method
The included background grid region of figure, obtains waveform and character area；
Projection module 420, for based on projected outline's method, lead waveform to be obtained in the waveform and character area
Upper and lower, left and right boundary position, extract the complete lead waveform；
Split module 430, for included according to the upper and lower, left and right boundary position and electrocardio report figure
Imposition layout is printed, by the lead waveform partition into more sub-regions；
Second acquisition module 440, for carrying out connected component labeling to each subregion, obtain each sub-district
First connected region of the sign waveform in domain and the second connected region for characterizing lead separator or lead symbol；
Removing module 450, for calculating the distance between each second connected region and first connected region,
Second connected region that the distance is more than preset value is deleted, obtains the second target connected region；
Judge module 460, for judging whether the second target connected region is lead separator；
Judge execution module 470, for when the judge module 460 judges not to be, by first connected region with
Second connected region merges, and obtains first object connected region；
Extraction module 480, for extracting the first object connected region in each subregion, obtain waveform number
According to.
Further, the judgement execution module 470, can be also used for when the judge module 460 judges to be, by table
The the second target connected region for levying the lead separator is deleted, by first connected region and remaining described second
Target connected region merges, and obtains first object connected region.
The present embodiment refers to the process of the respective function of each Implement of Function Module of papery waveform extracting device 400
Fig. 1 is stated to the content described in embodiment illustrated in fig. 3, here is omitted.
In summary, the papery Wave shape extracting method and device that the embodiment of the present invention proposes, by threshold method first by the heart
Waveform and character area in telegram announcement figure are isolated, then by projected outline's method, obtain complete lead wave regions, then
According to electrocardiosignal arrange an order according to class and grade printing layout by lead waveform partition into more sub-regions, according to connected component labeling principle, group
In the case that the lead waveform pixel in region is not lost, by the most characteristic of the number of pixels of lead waveform connected region,
It can significantly distinguish with lead symbol, lead separator, can disposably extract lead waveform, and without carrying out projection threshold
The positioning of value；When the wave regions of subregion do not connect, by the determination methods of distance, the connected region in subregion is entered
Row distance compares, filter out it is closest, belong to wave regions connected region carry out head and the tail merging, generate one connection ripple
Shape region, so as to extract lead waveform.Can solve traditional threshold-project method can not accurately extract that part to be present special
The problem of waveform (such as pixel is lost, waveform fracture).
In several embodiments provided herein, it should be understood that disclosed apparatus and method, can also pass through
Other modes are realized.Device embodiment described above is only schematical, for example, flow chart and block diagram in accompanying drawing
Show the device of multiple embodiments according to the present invention, method and computer program product architectural framework in the cards,
Function and operation.At this point, each square frame in flow chart or block diagram can represent the one of a module, program segment or code
Part, a part for the module, program segment or code include one or more and are used to realize holding for defined logic function
Row instruction.It should also be noted that at some as in the implementation replaced, the function that is marked in square frame can also with different from
The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially perform substantially in parallel, they are sometimes
It can perform in the opposite order, this is depending on involved function.It is it is also noted that every in block diagram and/or flow chart
The combination of individual square frame and block diagram and/or the square frame in flow chart, function or the special base of action as defined in performing can be used
Realize, or can be realized with the combination of specialized hardware and computer instruction in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate to form an independent portion
Point or modules individualism, can also two or more modules be integrated to form an independent part.
If the function is realized in the form of software function module and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need
Illustrate, herein, such as first and second or the like relational terms be used merely to by an entity or operation with
Another entity or operation make a distinction, and not necessarily require or imply between these entities or operation any this reality be present
The relation or order on border.Moreover, term " comprising ", "comprising" or its any other variant are intended to the bag of nonexcludability
Contain, so that process, method, article or equipment including a series of elements not only include those key elements, but also including
The other element being not expressly set out, or also include for this process, method, article or the intrinsic key element of equipment.
In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element
Process, method, other identical element also be present in article or equipment.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of papery Wave shape extracting method, it is characterised in that methods described includes：
The data of electrocardio report figure are obtained, the background grid region included by the electrocardio report figure is isolated based on threshold method,
Obtain waveform and character area；
Based on projected outline's method, the upper and lower, left and right boundary position of acquisition lead waveform in the waveform and character area,
Extract the complete lead waveform；
According to the included printing imposition layout of the upper and lower, left and right boundary position and electrocardio report figure, by described in
Lead waveform partition is into more sub-regions；
Connected component labeling is carried out to each subregion, obtains the first connection of the sign waveform in each subregion
Region and the second connected region for characterizing lead separator and lead symbol；
Each the distance between second connected region and first connected region are calculated, deletes the distance more than default
Second connected region of value, obtains the second target connected region；
Judge whether the second target connected region is lead separator；If it is not, by first connected region with it is described
Second target connected region merges, and obtains first object connected region；
The first object connected region in each subregion of extraction, obtains EGC waveform data.
2. according to the method for claim 1, it is characterised in that described to judge whether the second target connected region is to lead
Join separator, including：
Obtain the abscissa scope of the second target connected region；
The abscissa scope is compared with default first preset range, judge the second target connected region whether be
Lead separator, first preset range characterize the left border and right side boundary of each subregion.
3. according to the method for claim 1, it is characterised in that described to judge whether the second target connected region is to lead
Join separator, methods described also includes：
If so, will characterize the lead separator the second target connected region delete, will first connected region and
The remaining second target connected region merges, and obtains first object connected region.
4. according to the method for claim 1, it is characterised in that by first connected region and second connected region
Merge, obtain first object connected region, including：
The head and the tail pixel of first connected region and the second target connected region is arranged to 255, obtains first object
Connected region.
5. according to the method for claim 1, it is characterised in that described that connected region mark is carried out to each subregion
Remember, the first connected region for characterizing waveform and sign lead separator and lead symbol in each subregion of acquisition
Second connected region, including：
Connected component labeling is carried out to each subregion, obtains multiple connected regions；
Obtain the pixel value sum of each connected region；
Pixel value sum is more than to first connected region of the connected region as sign waveform of the first preset value, by pixel
Value sum is less than the connected region of the second preset value as the second connected region for characterizing lead separator or lead symbol
Domain.
6. a kind of papery waveform extracting device, it is characterised in that described device includes：
First acquisition module, for obtaining the data of electrocardio report figure, the electrocardio report figure is isolated based on threshold method and wrapped
The background grid region included, obtains waveform and character area；
Projection module, for based on projected outline's method, obtained in the waveform and character area lead waveform it is upper and lower,
Left and right boundary position, extract the complete lead waveform；
Split module, for being arranged according to the included printing of the upper and lower, left and right boundary position and electrocardio report figure
Version layout, by the lead waveform partition into more sub-regions；
Second acquisition module, for carrying out connected component labeling to each subregion, obtain in each subregion
Characterize the first connected region of waveform and characterize the second connected region of lead separator and lead symbol；
Removing module, for calculating the distance between each second connected region and first connected region, delete institute
Second connected region that distance is more than preset value is stated, obtains the second target connected region；
Judge module, for judging whether the second target connected region is lead separator；
Execution module is judged, for when the judge module judges not to be, first connected region and described second to be connected
Logical region merging technique, obtains first object connected region；
Extraction module, for extracting the first object connected region in each subregion, obtain EGC waveform data.
7. device according to claim 6, it is characterised in that the judge module, including：
Acquisition submodule, for obtaining the abscissa scope of the second target connected region；
Judging submodule, for the abscissa scope to be compared with default first preset range, judge second mesh
Mark whether connected region is lead separator, first preset range characterizes left border and the right side of each subregion
Lateral boundaries.
8. device according to claim 6, it is characterised in that the judgement execution module, be additionally operable in the judgement mould
When block judges to be, the second target connected region for characterizing the lead separator is deleted, by first connected region
Merge with the remaining second target connected region, obtain first object connected region.
9. device according to claim 6, it is characterised in that the judgement execution module, for described first to be connected
Region and the head and the tail pixel of the second target connected region are arranged to 255, obtain first object connected region.
10. device according to claim 6, it is characterised in that second acquisition module includes：
Submodule is marked, for carrying out connected component labeling to each subregion, obtains multiple connected regions；
Acquisition submodule, for obtaining the pixel value sum of each connected region；
Comparison sub-module, for pixel value sum to be more than to the connected region of the first preset value as the first of sign waveform
Connected region, pixel value sum is less than the connected region of the second preset value as sign lead separator and lead symbol
The second connected region.
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