CN109885806A - A kind of area computation method and device of vectorcardiographic loop - Google Patents
A kind of area computation method and device of vectorcardiographic loop Download PDFInfo
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- CN109885806A CN109885806A CN201910087094.3A CN201910087094A CN109885806A CN 109885806 A CN109885806 A CN 109885806A CN 201910087094 A CN201910087094 A CN 201910087094A CN 109885806 A CN109885806 A CN 109885806A
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Abstract
The invention discloses a kind of area computation method of vectorcardiographic loop and devices, wherein the method includes obtaining the starting point and terminal of father's ring and father's ring to be calculated to be calculated；Judged on father's ring to be calculated according to recursive algorithm with the presence or absence of node based on starting point and terminal；If there are nodes on father's ring to be calculated, dividing father's ring to be calculated according to node is at least two without node subring, and to calculate the area without node subring according to preset algorithm, no node subring is that the subring of node is not present on ring；At least two areas without node subring are added up to obtain the area of father's ring to be calculated.Scheme disclosed by the invention can accurately calculate the area of the vectorcardiographic loop of 8-shaped.
Description
Technical field
The invention belongs to electrocardial vector analysis technical fields, and in particular to a kind of area computation method of vectorcardiographic loop and
Device.
Background technique
In electrocardial vector analysis, calculating vectorcardiographic loop area is a part and parcel.And to special shape
Vectorcardiographic loop, such as when the area of vectorcardiographic loop of 8-shaped is calculated, then the difficulty for calculating its area is higher.
In the prior art, the method for the area of the vectorcardiographic loop of traditional calculating 8-shaped is in ring and outside ring
Different colors is arranged in pixel, and the area of vectorcardiographic loop is calculated by the number of the pixel for the different colours that add up.But
It is the easy influence by screen resolution of this method, reduces the accuracy of calculated result.And it is currently used be using
The method of vector product calculates the area of ring, and for no node ring, the half of vector product module can directly represent the area of ring, but
It is when calculating 8-shaped ring, since the mould of vector product can not directly represent the area of ring, for single 8-shaped ring, usual people
Work calculates a unique node in 8-shaped ring, and each sampled point of its subring is manually chosen from single 8-shaped father ring,
To calculate its area, but when calculating more 8-shaped rings, since vectorcardiographic loop quantity is more, not only artificial choosing
Take, amount of calculation it is larger, and be also easy to produce calculating error.
Therefore, the area for how accurately calculating the vectorcardiographic loop of more 8-shaped becomes technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved in the present invention is that how accurately to calculate the area of the vectorcardiographic loop of more 8-shaped.
For this purpose, according in a first aspect, being wrapped the embodiment of the invention discloses a kind of area computation method of vectorcardiographic loop
It includes:
Obtain the starting point and terminal of father's ring to be calculated and father's ring to be calculated；Based on starting point and terminal according to recursive algorithm
Judge on father's ring to be calculated with the presence or absence of node；If there are nodes on father's ring to be calculated, father to be calculated is divided according to node
Ring is at least two without node subring, to calculate the area without node subring according to preset algorithm, no node subring be on ring not
There are the subrings of node；At least two areas without node subring are added up to obtain the area of father's ring to be calculated.
Optionally, judged respectively based on starting point and terminal according to recursive algorithm on father's ring to be calculated with the presence or absence of node packet
It includes: judging whether the line segment on father's ring to be calculated intersects respectively based on starting point and terminal；If the line segment on father's ring to be calculated
Intersection then calculates intersection point, and determines that intersection point is node.
Optionally, the starting point and terminal of father's ring to be calculated and father's ring to be calculated are being obtained and is being pressed based on starting point and terminal
Judged respectively on father's ring to be calculated according to recursive algorithm with the presence or absence of between node, further includes: reject continuous on father's ring to be calculated
Repeat point.
Optionally, if there are nodes on father's ring to be calculated, dividing father's ring to be calculated according to node is at least two nothings
Node subring, if including: that there are node, roots on father's ring to be calculated to calculate the area without node subring according to preset algorithm
Dividing father's ring to be calculated according to node is two subrings, and subring is determined as new father's ring；Distinguished based on node according to recursive algorithm
Judge on new father's ring with the presence or absence of other nodes；If other nodes are not present on new father's ring, it is determined that new father's ring is to be calculated
Father's ring without node subring；The area without node subring is calculated according to preset algorithm.
According to second aspect, the embodiment of the invention provides a kind of areal calculation devices of vectorcardiographic loop, comprising:
Father's ring moulds block to be calculated, for obtaining the starting point and terminal of father's ring to be calculated and father's ring to be calculated；Node judgement
Module, for being judged on father's ring to be calculated according to recursive algorithm with the presence or absence of node based on starting point and terminal；Subring divides mould
Block, if judging that there are nodes on father's ring to be calculated for node judgment module, dividing father's ring to be calculated according to node is extremely
Few two without node subring, to calculate the area without node subring according to preset algorithm, no node subring is that there is no knots on ring
The subring of point；Area accumulation module, at least two areas without node subring being added up to obtain father's ring to be calculated
Area.
Optionally, node judgment module includes: intersection judging unit, by being judged to based on respectively by starting point and terminal
Whether the line segment calculated on father's ring intersects；Node determination unit, if judging line on father's ring to be calculated for intersecting judging unit
Section intersection then calculates intersection point, and determines that intersection point is node.
Optionally, further includes: repeat point and reject module, continuously repeat point on father's ring to be calculated for rejecting.
Optionally, subring division module includes: new father's ring element, if there are node, roots on father's ring to be calculated
Dividing father's ring to be calculated according to node is two subrings, and subring is determined as new father's ring；New node judging unit, for based on knot
Point judges on new father's ring according to recursive algorithm respectively with the presence or absence of other nodes；Without node subring determination unit, if for new
Node judging unit judges that there is no other nodes on new father's ring, it is determined that new father's ring is father's ring to be calculated without node subring；
Areal calculation unit, for calculating the area without node subring according to preset algorithm.
According to the third aspect, the present invention provides a kind of computer installation, including processor, processor is for executing storage
The computer program stored in device realizes the area computation method of the vectorcardiographic loop of above-mentioned first aspect any one.
According to fourth aspect, the present invention provides a kind of computer readable storage mediums, are stored thereon with computer program,
Processor is for executing the vectorcardiographic loop that the computer program stored in storage medium realizes above-mentioned first aspect any one
Area computation method.
The beneficial effects of the present invention are:
The area computation method and device of a kind of vectorcardiographic loop disclosed by the embodiments of the present invention, obtain father to be calculated first
The starting point and terminal of ring and father's ring to be calculated are then based on the starting point and terminal according to recursive algorithm and judge father's ring to be calculated
It is upper to whether there is node, if there is node, then father's ring to be calculated is respectively divided at least two without node according to node
Ring, and calculate the area without node subring according to preset algorithm, finally by the area of each no node subring carry out it is cumulative to
Obtain the area of father's ring to be calculated.It is carried out in such a way that pixel calculates and directly adopt vector product in compared with the existing technology
The method of the areal calculation of vectorcardiographic loop, the embodiment of the present invention is by judging that father's ring to be calculated is divided at least two by node
Without node subring, calculate separately the area of each no node subring, finally by the area of no node subring added up to obtain to
The area for calculating father's ring, when avoiding the area for the vectorcardiographic loop for directly calculating more 8-shaped using vector product, the mould of vector product
The area of ring can not be directly represented, to lead to the problem of large error, reduce artificial calculating and workload, improve meter
Calculate the accuracy of result.
In an alternate embodiment of the invention, before judging father's ring to be calculated with the presence or absence of node, father's ring to be calculated is rejected first
Upper continuous repetition point reduces calculation amount to prevent generating the subring of unnecessary 0 area, improves calculating speed.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those skilled in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the area computation method of vectorcardiographic loop of the embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the areal calculation device of vectorcardiographic loop of the embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements, can be wireless connection, be also possible to wired connection.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Referring to FIG. 1, for a kind of flow chart of the area computation method of vectorcardiographic loop disclosed in the present embodiment, the electrocardio
The area computation method of vector ring includes:
Step S101 obtains the starting point and terminal of father's ring to be calculated and father's ring to be calculated.
In the present embodiment, father's ring to be calculated refers to the vectorcardiographic loop for needing to carry out areal calculation, can be single 8-shaped
Ring is also possible to more 8-shaped rings.In vectorcardiographic loop, starting point and terminal are known, therefore obtain father's ring to be calculated
While also get the starting point and terminal of father's ring to be calculated.When father's ring to be calculated is more 8-shaped rings, starting point can be
In the starting subring of father's ring to be calculated, it can also can also be in intermediate subring in tail end subring.
It in an alternate embodiment of the invention, after step slol, can also include: to reject continuously to repeat on father's ring to be calculated
Point.It can be avoided the subring for generating unnecessary 0 area, reduce calculation amount.
Step S102 is judged on father's ring to be calculated according to recursive algorithm with the presence or absence of node based on starting point and terminal.
In the present embodiment, step S102 can also include: to be judged on father's ring to be calculated respectively based on starting point and terminal
Line segment whether intersect；If the line segment intersection on father's ring to be calculated, intersection point is calculated, and determines that intersection point is node.
In a particular embodiment, the line segment p on father's ring to be calculated can be judged by Do statementipi+1With line segment pjpj+1
Whether intersect, wherein condition j > i+1.In the specific implementation process, in order to improve the accuracy of areal calculation, for following
Special circumstances judge without intersection:
(1)piWith pj+1For a bit；(2) line segment pipi+1With line segment pjpj+1The two is conllinear.
Line segment p is judged when calculatingipi+1With line segment pjpj+1When intersection, then the intersection point p of the two can be calculatedooPoint (second
A o=1,2 ..., n), so that father's ring cutting to be calculated is divided into two subrings.
In the specific implementation process, line segment p is calculatedipi+1With line segment pjpj+1Intersection point can using vector method solve intersection point,
Also it can be used plane geometry method, point slope form equation is solved.In the specific implementation process, it is solved and is handed over using vector method
Point should be calculation method well known to those skilled in the art, obtain line segment p using other modesipi+1With line segment pjpj+1
The method of intersection point should be considered as be common technology means in the art direct replacement.
If it is determined that on father's ring to be calculated, there are nodes, then follow the steps S103, if it is determined that not depositing on father's ring to be calculated
In node, then the area of current father's ring to be calculated is directly calculated according to vector integration method.
Vector integration method calculating process is listed below:
It is closed loop in mathematical meaning since the premise using Vector product is determining ring, i.e. pnEqual to p1.In order to guarantee
Above-mentioned condition adds p after known pointn+1Point, pn+1Equal to p1。
Its vector product as a result, are as follows:
, wherein x is the horizontal axis of p, and y is the longitudinal axis of p.Even if pn+1It is also equal to p1, the last one determinant is 0, the area of ring
Size is unaffected, therefore adds pn+1Have no effect on the area of ring.Instead, if pnNot equal to p1, then the anchor ring calculated is long-pending to be had
Error.
Therefore, the area of above-mentioned closed loop are as follows:
It should be noted that the area of current father's ring to be calculated can also be calculated using other algorithms, other means are used
The mode for reaching technical effect identical with this programme, should be considered as be common technology means in the art direct replacement.
Step S103, dividing father's ring to be calculated according to node is at least two without node subring, in terms of according to preset algorithm
Calculate the area without node subring.
In the present embodiment, no node subring is that the subring of node is not present on ring.Step S103 specifically includes: basis
It is two subrings that node, which divides father's ring to be calculated, and subring is determined as new father's ring；Sentenced respectively based on node according to recursive algorithm
Break on new father's ring with the presence or absence of other nodes；If other nodes are not present on new father's ring, it is determined that new father's ring is father to be calculated
Ring without node subring；The area without node subring is calculated according to preset algorithm.
In the specific implementation process, if it is determined that there are other nodes on new father's ring, then step S103 is repeated, until
Father's ring to be calculated is all divided into no node subring.After father's ring to be calculated is divided at least two without node subring, press
According to vector integration method, the area of each no node subring is calculated separately.
It should be noted that the area of each no node subring can also be calculated using other algorithms, other means are used
The mode for reaching technical effect identical with this programme, should be considered as be common technology means in the art direct replacement.
Step S104 is added up at least two areas without node subring to obtain the area of father's ring to be calculated.
In the present embodiment, the area by each no node subring being calculated adds up, to obtain to be calculated
The area of father's ring.
The present embodiment obtains the starting point and terminal of father's ring to be calculated and father's ring to be calculated first, is then based on the starting point
Judging with terminal according to recursive algorithm then will be wait count according to node if there is node with the presence or absence of node on father's ring to be calculated
It calculates father's ring and is respectively divided at least two without node subring, and calculate the area without node subring according to preset algorithm, finally will
The area of each no node subring carries out cumulative to obtain the area of father's ring to be calculated.Pixel is used in compared with the existing technology
The method that the mode that point calculated and directlyed adopt vector product carries out the areal calculation of vectorcardiographic loop, the embodiment of the present invention is by sentencing
Father's ring to be calculated is divided at least two without node subring by disconnected node, calculates separately the area of each no node subring, finally
The area of no node subring is added up to obtain the area of father's ring to be calculated, avoids and directly calculates more 8 words using vector product
When the area of the vectorcardiographic loop of shape, the mould of vector product can not directly represent the area of ring, so that large error is led to the problem of,
Artificial calculating and workload are reduced, the accuracy of calculated result is improved.
Wherein, the area computation method of vectorcardiographic loop disclosed in the present embodiment can be adapted for single 8-shaped ring, can also
To be suitable for more 8-shaped rings, no node ring can be applicable to.
The present embodiment also discloses a kind of areal calculation device of vectorcardiographic loop, referring to FIG. 2, being the vectorcardiographic loop
Areal calculation apparatus structure schematic diagram, the areal calculation device of the vectorcardiographic loop includes:
Father's ring moulds block 201 to be calculated, for obtaining the starting point and terminal of father's ring to be calculated and father's ring to be calculated；Node is sentenced
Disconnected module 202, for being judged on father's ring to be calculated according to recursive algorithm with the presence or absence of node based on starting point and terminal；Subring is drawn
Sub-module 203, if judging that there are nodes on father's ring to be calculated, divide father to be calculated according to node for node judgment module
Ring is at least two without node subring, to calculate the area without node subring according to preset algorithm, no node subring be on ring not
There are the subrings of node；Area accumulation module 204, for being added up at least two areas without node subring with obtain to
Calculate the area of father's ring.
In an alternate embodiment of the invention, node judgment module 202 includes: intersection judging unit, for being based on starting point and end
Point judges whether the line segment on father's ring to be calculated intersects respectively；Node determination unit, if for intersect judging unit judge to
The line segment intersection on father's ring is calculated, then calculates intersection point, and determines that intersection point is node.
In an alternate embodiment of the invention, the areal calculation device of the vectorcardiographic loop further include: repeat point and reject module, be used for
It rejects and continuously repeats point on father's ring to be calculated.
In an alternate embodiment of the invention, subring division module 203 includes: new father's ring element, if being used for father's ring to be calculated
There are nodes, then dividing father's ring to be calculated according to node is two subrings, and subring is determined as new father's ring；New node judgement is single
Member, for being judged respectively on new father's ring according to recursive algorithm based on node with the presence or absence of other nodes；No node subring determines single
Member, if judging that there is no other nodes on new father's ring for new node judging unit, it is determined that new father's ring is father's ring to be calculated
Without node subring；Areal calculation unit, for calculating the area without node subring according to preset algorithm.
In addition, also providing a kind of computer installation in the embodiment of the present invention, processor, which passes through, executes the computer instruction,
To realize following methods:
Obtain the starting point and terminal of father's ring to be calculated and father's ring to be calculated；Based on starting point and terminal according to recursive algorithm
Judge on father's ring to be calculated with the presence or absence of node；If there are nodes on father's ring to be calculated, father to be calculated is divided according to node
Ring is at least two without node subring, to calculate the area without node subring according to preset algorithm, no node subring be on ring not
There are the subrings of node；At least two areas without node subring are added up to obtain the area of father's ring to be calculated.
It is that can lead to it will be understood by those skilled in the art that realizing all or part of the process in above-described embodiment method
Computer program is crossed to instruct relevant hardware and complete, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (ROM) or random access memory (RAM) etc..Computer processor is situated between for executing storage
The computer program stored in matter realizes following methods:
Obtain the starting point and terminal of father's ring to be calculated and father's ring to be calculated；Based on starting point and terminal according to recursive algorithm
Judge on father's ring to be calculated with the presence or absence of node；If there are nodes on father's ring to be calculated, father to be calculated is divided according to node
Ring is at least two without node subring, to calculate the area without node subring according to preset algorithm, no node subring be on ring not
There are the subrings of node；At least two areas without node subring are added up to obtain the area of father's ring to be calculated.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Make several modifications and improvements.These also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (10)
1. a kind of area computation method of vectorcardiographic loop characterized by comprising
Obtain the starting point and terminal of father's ring to be calculated and father's ring to be calculated；
Judged on father's ring to be calculated according to recursive algorithm with the presence or absence of node based on the starting point and the terminal；
If there are nodes on father's ring to be calculated, dividing father's ring to be calculated according to the node is at least two nothings
Node subring, to calculate the area of the no node subring according to preset algorithm, the no node subring is that there is no knots on ring
The subring of point；
The area of at least two no node subrings is added up to obtain the area of father's ring to be calculated.
2. the area computation method of vectorcardiographic loop as described in claim 1, which is characterized in that described to be based on starting point and institute
It states terminal and judges respectively according to recursive algorithm and include: with the presence or absence of node on father's ring to be calculated
Judge whether the line segment on father's ring to be calculated intersects respectively based on the starting point and the terminal；
If the line segment intersection on father's ring to be calculated, intersection point is calculated, and determines that the intersection point is node.
3. the area computation method of vectorcardiographic loop as claimed in claim 2, which is characterized in that obtain father to be calculated described
The starting point and terminal of ring and father's ring to be calculated are sentenced based on starting point and the terminal according to recursive algorithm respectively with described
Break on father's ring to be calculated with the presence or absence of between node, further includes:
It rejects and continuously repeats point on father's ring to be calculated.
4. the area computation method of vectorcardiographic loop as claimed in any one of claims 1-3, which is characterized in that if described
There are nodes on father's ring to be calculated, then dividing father's ring to be calculated according to the node is at least two without node
Ring includes: with the area for calculating the no node subring according to preset algorithm
If there are nodes on father's ring to be calculated, dividing father's ring to be calculated according to the node is two subrings,
And the subring is determined as new father's ring；
Judged on new father's ring respectively according to recursive algorithm with the presence or absence of other nodes based on the node；
If other nodes are not present on new father's ring, it is determined that new father's ring is father's ring to be calculated without node
Ring；
The area of the no node subring is calculated according to preset algorithm.
5. a kind of areal calculation device of vectorcardiographic loop characterized by comprising
Father's ring moulds block to be calculated, for obtaining the starting point and terminal of father's ring to be calculated and father's ring to be calculated；
Node judgment module, for judging father's ring to be calculated according to recursive algorithm based on the starting point and the terminal
With the presence or absence of node；
Subring division module, if judging that there are node, bases on father's ring to be calculated for the node judgment module
It is at least two without node subring that the node, which divides father's ring to be calculated, to calculate no node according to preset algorithm
The area of ring, the no node subring are that the subring of node is not present on ring；
Area accumulation module, for being added up the area of at least two no node subrings to obtain the father to be calculated
The area of ring.
6. the areal calculation device of vectorcardiographic loop as claimed in claim 5, which is characterized in that the node judgment module packet
It includes:
Intersect judging unit, for judging that the line segment on father's ring to be calculated is respectively based on the starting point and the terminal
No intersection；
Node determination unit is counted if judging the line segment intersection on father's ring to be calculated for the intersection judging unit
Intersection point is calculated, and determines that the intersection point is node.
7. the areal calculation device of vectorcardiographic loop as claimed in claim 6, which is characterized in that further include:
It repeats point and rejects module, continuously repeat point on father's ring to be calculated for rejecting.
8. the areal calculation device of the vectorcardiographic loop as described in claim 5-7 any one, which is characterized in that the subring
Division module includes:
New father's ring element divides described to be calculated if there are nodes on father's ring to be calculated according to the node
Father's ring is two subrings, and the subring is determined as new father's ring；
New node judging unit, for being judged respectively on new father's ring according to recursive algorithm based on the node with the presence or absence of it
His node；
Without node subring determination unit, if judging that there is no other knots on new father's ring for the new node judging unit
Point, it is determined that new father's ring is father's ring to be calculated without node subring；
Areal calculation unit, for calculating the area of the no node subring according to preset algorithm.
9. a kind of computer installation, which is characterized in that including processor, the processor is based on executing and storing in memory
Calculation machine program realizes the area computation method of the vectorcardiographic loop such as claim 1-4 any one.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that processor is for executing
The computer program stored in storage medium realizes the areal calculation of the vectorcardiographic loop as described in claim 1-4 any one
Method.
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Application publication date: 20190614 |