CN103295262B - Rotation multi-angle curve reestablishing method and the device of tubular housing tissue - Google Patents
Rotation multi-angle curve reestablishing method and the device of tubular housing tissue Download PDFInfo
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Abstract
The invention provides a kind of rotation multi-angle curve reestablishing method and device of tubular housing tissue, method wherein comprises: adopt coordinate transformation method to obtain the imaging surface of tubular housing tissue, then according to the construction features of area-of-interest, on this imaging surface, determine the imaging angle of area-of-interest, according to the position relationship between each sampled point on the tubular housing organizational information of the vector direction of determined imaging angle and tubular housing organization center line, rebuild tubular housing imaging of tissue and show. Person utilizes the image of curve reestablishing the tiny pathology in tubular housing tissue flexibly and easily, fast and effeciently to be detected can to make clinical position by the present invention.
Description
Technical field
The present invention relates to medical image processing technical field, more specifically, relate to a kind of tubular housing groupRotation multi-angle curve reestablishing method and the device knitted.
Background technology
Curve reestablishing technology (CurvedPlanarReformation, CPR) should medical clinic applicationsWith, especially, in to the clinical diagnosis of tubular housing tissue and treatment, there is irreplaceable auxiliary diagnosisValue and significance. Curve reestablishing technology is the pipe such as bone pipeline, tooth according to facial canal, craniofacial regionThe center line of shape cavity tissue, by a large amount of not complete on piece image at the layer data of same aspectAnd show fine and smoothly.
From the angle of clinical practice application, curve reestablishing technology can allow clinical position person from magnanimityIn layer data, free, person just can complete and clearly observe on piece image to make clinical positionTo the whole inside and outside situation of organizing of organizing different aspects blood vessel, thereby rapidly, provide exactlyDiagnosis report.
Because clinical position person is to organizing the difference of area-of-interest, therefore viewing angle is also just different. PinTo the difference of viewing angle, the reconstruction mode of curve reestablishing technology also has multiple, for example curved projection surfaces reconstruction,Extension curve reestablishing, stretching curve reestablishing, surface of revolution reconstruction, multipath curve reestablishing and thickness curved surfaceRebuild etc. The no matter curve reestablishing of which kind of mode, its imaging mode has certain shortcoming, especially forTiny lesion detection in tubular tissue, what clinical position person was more concerned about is how to utilize curve reestablishingImage fast and accurately observe and measure the information of pathological tissues, and utilize existing curve reestablishingMode all underaction and practicalities aspect the imaging of rebuilding tissue image, cannot observe tiny sense emergingThe region of interest, thus the tiny pathology in tissue cannot be detected in time.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of polygonal writing music of rotation of tubular housing tissueFace method for reconstructing and device, so that the image that clinical position person utilizes curve reestablishing flexibly and easily, have fastThe Pathological Information of tubular housing tissue detected to effect.
A kind of rotation multi-angle curve reestablishing of tubular housing tissue is provided according to an aspect of the present invention,Method, comprising:
By extracting the center line of tubular housing tissue, obtain the sampled point on center line;
Obtain the tangent vector of each sampled point on center line;
According to the tangent vector of the sampled point of center line and each sampled point, adopt coordinate transformation method to obtain pipeThe imaging surface of shape cavity tissue;
According to the construction features of area-of-interest, on obtained imaging surface, determine the one-tenth of area-of-interestImage angle degree;
Determine the vector direction of this imaging angle according to imaging angle;
According to each sampled point on the tubular housing organizational information of the vector direction of imaging angle and center line itBetween position relationship, imaging the demonstration of rebuilding tubular housing tissue.
Wherein, in the process of imaging surface that obtains tubular housing tissue, arbitrarily on definite center line firstOrthogonal vectors on the normal plane of individual sampled point; According to the sampling of having determined orthogonal vectors on center lineOrthogonal vectors on the normal plane of point and the sampled point adjacent with the sampled point of having determined orthogonal vectorsTangent vector, adopts coordinate transformation method, determines and adjacent the adopting of sampled point of having determined orthogonal vectorsOrthogonal vectors on the normal plane of sampling point.
Wherein, determining that according to obtained imaging surface the angle of image of area-of-interest spends in journey, inOn the normal plane of the sampled point on heart line determine viewing angle, in the normal plane of sampled point will with orthogonal toThe vector that in amount one vector forms viewing angle is as vector interested, wherein, vector interested withA vectorial angle in orthogonal vectors is the imaging angle of area-of-interest.
On the other hand, the invention provides a kind of rotation multi-angle curve reestablishing device of tubular housing tissue,Comprise:
Sampling unit, for by the center line that extracts tubular housing tissue, obtains the sampling on center linePoint;
Tangent vector computing unit, for obtaining the tangent vector of each sampled point on center line;
Imaging surface acquiring unit, for according to the sampled point of tangent vector computing unit center line and each adoptingThe tangent vector of sampling point, adopts coordinate transformation method to obtain the imaging surface of tubular housing tissue;
Imaging angle determining unit, for according to the construction features of area-of-interest, obtains list at imaging surfaceOn the imaging surface that unit obtains, determine the imaging angle of area-of-interest;
Imaging angle vector direction determining unit, for according to the determined imaging of imaging angle determining unitAngle is further specified to the vector direction of image angle degree;
Image-generating unit, for according on the tubular housing organizational information of vector direction and center line respectively samplingPosition relationship between point, rebuilds the imaging of tubular housing tissue and shows.
Wherein, preferably structure is, imaging surface acquiring unit further comprises orthogonal vectors determining unit,For the orthogonal vectors on the normal plane of first sampled point on arbitrarily definite described center line, then basisOrthogonal vectors on the normal plane of sampled point of orthogonal vectors on described center line, are determined and with describedThe tangent vector of having determined the sampled point that the sampled point of orthogonal vectors is adjacent, adopts described Coordinate Conversion sideMethod, just determines on the normal plane of the sampled point adjacent with the described sampled point of having determined orthogonal vectorsHand over vector.
Utilize above-mentioned according to rotation multi-angle curve reestablishing method and the dress of tubular housing tissue of the present inventionPut, person utilizes the image of curve reestablishing pipe flexibly and easily, fast and effeciently to be detected can to make clinical positionTiny pathology in shape cavity tissue.
In order to realize above-mentioned and relevant object, one or more aspects of the present invention comprise below will be in detailThe feature that illustrates and particularly point out in the claims. Explanation and accompanying drawing below describe this in detailSome bright illustrative aspects. But what indicated these aspects only can use principle of the present inventionSome modes in variety of way. In addition, the present invention be intended to comprise all these aspects and they etc.Jljl.
Brief description of the drawings
By reference to the content below in conjunction with the description of the drawings and claims, and along with to the present inventionUnderstanding more comprehensively, other object of the present invention and result will more be understood and should be readily appreciated that. In the accompanying drawings:
Fig. 1 is the rotation multi-angle curve reestablishing method stream according to the tubular housing tissue of the embodiment of the present inventionJourney schematic diagram;
Fig. 2 is according to the imaging surface schematic diagram of the tubular housing tissue of the embodiment of the present invention;
Fig. 3 is the imaging angle cross sectional representation according to the area-of-interest of the embodiment of the present invention;
Fig. 4 is according to the tubular housing tissue launching along multi-angle vector interested of the embodiment of the present inventionCross sectional representation;
Fig. 5 is the rotation multi-angle curve reestablishing device side according to the tubular housing tissue of the embodiment of the present inventionFrame schematic diagram.
In institute's drawings attached, identical label is indicated similar or corresponding feature or function.
Detailed description of the invention
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Rebuilding spirit not aspect the imaging of tissue image for aforementioned curve reestablishing mode of the prior artAlive and practical, the problem of organizing little tiny pathology cannot be detected in time, the present invention is in tubular housing groupBe made on the basis of image planes, adopt vector interested adjustable, multi-angle, real by analyzing, processingExisting vector interested imaging neatly arbitrarily on the cross section of tubular housing tissue.
Fig. 1 shows the rotation multi-angle curve reestablishing side according to the tubular housing tissue of the embodiment of the present inventionMethod schematic flow sheet.
As shown in Figure 1, the rotation multi-angle curve reestablishing method bag of tubular housing tissue provided by the inventionDraw together:
S110: by extracting the center line of tubular housing tissue, obtain the sampled point on this center line;
S120: the tangent vector of obtaining each sampled point on this center line; S130: according to tubular housing tissueThe sampled point of center line and the tangent vector of each sampled point, adopt coordinate transformation method to obtain tubular housing groupThe imaging surface of knitting;
S140: according to the construction features of area-of-interest, determine region of interest on obtained imaging surfaceThe imaging angle in territory;
S150: the vector direction of determining this imaging angle according to determined imaging angle;
S160: according to respectively adopting on the tubular housing organizational information of the vector direction of imaging angle and center linePosition relationship between sampling point, rebuilds the imaging of tubular housing tissue and shows.
It should be noted that, in step S120, obtain the side of the tangent vector of each sampled point on center lineMethod has multiple, for example, have curve, central difference method and front and back calculus of finite differences etc., adopts wherein any oneKind method can be obtained the tangent vector of each sampled point on center line. That is to say, pass through curveOr central difference method or front and back calculus of finite differences, obtain the tangent vector of each sampled point on center line. UnderThe embodiment of face, taking adopt tangent vector that the method for curve obtains each sampled point on center line asExample describes.
In step S130, coordinate transformation method also has multiple, for example, have minimum rotation frame method, activityThe coordinate transformation methods such as frame method and Helical coordinate system orthogonalization, wherein, wherein any one seat adoptingIn mark conversion method, as long as ensure two vectors and tangent vector difference pairwise orthogonal that obtain, seat is orthogonalThe relation of mark system just can. That is to say, coordinate transformation method is minimum rotation frame method or movable markFrame method or Helical coordinate system orthogonalization. In specific embodiment statement below, with minimum rotation frame methodAs coordinate transformation method, the process of the imaging surface that obtains tubular housing tissue is done to exemplary illustration.
Wherein, in the process of imaging surface that obtains tubular housing tissue, determine arbitrarily tubular housing tissueOrthogonal vectors on center line on the normal plane of first sampled point; According to having determined on this center lineOrthogonal vectors on the normal plane of the sampled point of orthogonal vectors and with the sampled point of having determined orthogonal vectorsThe tangent vector of adjacent sampled point, adopt coordinate transformation method, determines and determined orthogonal vectorsOrthogonal vectors on the normal plane of the sampled point that sampled point is adjacent.
Wherein, determine first sampled point according to the upper end of tubular housing organization center line or bottom,In the present invention, adopt the upper end of tubular housing organization center line as first sampled point, so withDetermine that the position of the sampled point that the sampled point of orthogonal vectors is adjacent determined orthogonal vectors inThe below of sampled point. If adopt the bottom of tubular housing organization center line as first sampled point,The position of adjacent with the sampled point of having determined orthogonal vectors so sampled point is in just having determinedHand over the top of vectorial sampled point.
It should be noted that, imaging surface, normal plane and cross section mentioned in the present invention are at tubular housingThe curve reestablishing process middle finger of tissue be all same, but convenience in order to explain, belowThat in embodiment explanation, can explain according to reality need to select different form of presentations.
In order to describe the process of obtaining the imaging surface of tubular housing tissue in the present invention in detail, Fig. 2 showsAccording to the imaging surface schematic diagram of the tubular housing tissue of the embodiment of the present invention.
As an example of the present invention, as shown in Figure 2:
(1) get first sampled point X in the upper end of the center line of tubular housing tissue1, then determine theA sampled point X1Normal plane on two orthogonal vectorsWith
Wherein, choose arbitrarily two orthogonal vectors according to right hand orthogon theoryWithAs first samplingPoint X1Normal plane on orthogonal vectors, make orthogonal vectorsWith first sampled point X1Tangent vectorForm a rhombic system.
(2) adopt minimum computational methods of rotating frame, according to determined first sampled point X1TwoIndividual orthogonal vectorsWithAnd second sampled point X2Tangent vectorDetermine second sampled pointTwo orthogonal vectors on normal planeWith
Wherein, adopt the method for minimum rotation frame in computational process, for given spatial parameter curveR (t), establishing its unit tangent vector is e1(t), meet e1(t)·(e2(t)×e3(t))=1 ordered vector group{e1(t),e2(t),e3(t) } be adaptability frame. Wherein, e2And e (t)3(t) be the pairwise orthogonal vector in normal plane.But different adaptability frames can transform mutually by the product of orthogonal spin matrix, for commonAdaptability frame Frenet frame t, and n, b}, wherein And it is rightIn the adaptability frame { e of space curve1(t),e2(t),e3(t) }, its angular velocity vector ω only has with latter two componentClose i.e. ω=β e2(t)+γe3, and β=e' (t)3(t)·e1(t)，γ=e1'(t)·e2(t), claim the suitable of this space curveAnswering property frame is minimum rotation frame. Now, first component is tangent vector, and latter two component is equivalent toOn normal plane, rotate and obtain with one degree of freedom, frame does not carry out extra rotation in normal plane,And be the reference system as other frames. Wherein, adaptability frame becomes filling of minimum rotation frame and wantsCondition is: latter two component e2And e (t)3(t) meetWherein i=2,3.
By above-mentioned computational process, the method for minimum being rotated to frame is applied to bending tubular housing tissueIn the extraction of the orthogonal vectors on the normal plane of center line up-sampling point, can obtain a series of and swan-neckShape cavity is organized perpendicular axial vector, and two other axial vector all the time can be not axial around first simultaneouslyAmount rotation.
(3) every on tubular housing organization center line of the method that by that analogy, adopts minimum rotation frameA sampled point all calculates, and obtains respectively two orthogonal vectors on the normal plane of each sampled pointWithTo obtain the imaging surface of tubular housing tissue.
On the basis of imaging surface that obtains tubular housing tissue, determine the imaging angle of area-of-interest.Wherein, determining that according to obtained imaging surface the angle of image of area-of-interest spends in journey, in tubular cavityOn the normal plane of the sampled point on soma's center line, determine two crossing and angled vectorsAs vector interested, the angle of two vector formations interested is the imaging angle of area-of-interest.
On the normal plane of the sampled point on center line, determine two crossing and angled vectorsIn process as vector interested, true on the normal plane of the sampled point on tubular housing organization center lineDetermine viewing angle, then determine two vectors interested according to this viewing angle, one is this sampled pointA vector in orthogonal vectors on normal plane, also have one be on the normal plane of this sampled point with this toMeasure into the vector of viewing angle. That is to say, by one in the orthogonal vectors on the normal plane of this sampled pointOn the normal plane at individual vector sum and this orthogonal vectors place, form the vector work of viewing angle with these orthogonal vectorsFor vector interested, and two angles that vector interested forms are exactly determined viewing angle,For the imaging angle of area-of-interest; Or the normal plane of the sampled point on tubular housing organization center lineUpper determine that arbitrarily two crossing and angled vectors are as vector interested.
Can find out by the above-mentioned description to the imaging angle of determining area-of-interest, area-of-interestImaging angle is made up of two vectors, and these two vectorial directions are pointed to interested region. That is to say,In the time carrying out the curve reestablishing of tubular housing tissue, there are two vectors interested, these two vectors interestedCan be arbitrarily at an angle, and this angle becoming is exactly the imaging angle of area-of-interest. At thisIn two vectors interested, can first fix one of them vector interested, and then fix according to thisVector interested is determined another vector interested.
That is to say, in these two vectors interested, one is fixing vector interested, anotherUnfixed. Certainly, these two interested vectors can be also unfixed, as long as these twoIt is that intersect and angled just passable that vector interested meets, and is how many as for this angle, isDetermined by clinical position person, the method for decision is exactly the feature according to area-of-interest, for example shape,Position relationship or pathology type etc., and namely adopting on tubular housing organization center line of this angleDefinite viewing angle on the normal plane of sampling point.
Forming in the vector process of viewing angle, adopt coordinate transformation method to obtain and tubular housing tissueOne of them perpendicular vector interested, then on the determined normal plane of orthogonal vectors, according to instituteDefinite viewing angle obtains another vector interested.
Because the imaging angle of area-of-interest is implemented on the basis of the imaging surface of tubular housing tissue,And the imaging surface of tubular housing tissue cutting by the sampled point on tubular housing organization center line and each pointVector, adopts coordinate transformation method to obtain. Therefore, in order to describe definite region of interest in the present invention in detailThe angle of image in territory is spent journey, and Fig. 3 shows the imaging angle according to the area-of-interest of the embodiment of the present inventionCross sectional representation. As an example of the present invention, as shown in Figure 3:
(1) choose any one sampled point on tubular housing organization center line, according to two of this sampled pointIndividual orthogonal vectorsWithIn a vectorAs one of them vector interested.
(2) according to the construction features of the area-of-interest that will observe in tubular housing tissue, for example pipeThe size of shape cavity tissue, orientation, structural form etc. find and vector on the normal plane of sampled pointBecomeThe vector at θ angleAs another vector interested.
Because the area-of-interest that will observe can present different forms in tubular housing tissue,As fillet shape, ellipse, circular arc etc., therefore can be according to area-of-interest construction features, true flexiblyA fixed best viewing angle θ. According to θ angle, on the normal plane of the definite sampled point of orthogonal vectors, look forArrive and vectorVector into θ angle
(3) two vectors into θ angleWithAs the vector interested of curve reestablishing imaging, and θ angleBe the imaging angle of area-of-interest.
The difference of angle according to the observation, vector interested also can be different, thereby form according to vector interestedAngle also different. Therefore can adjust arbitrarily according to different viewing angles the angle of vector interested,According to the feature of area-of-interest, the angle of vector interested can be any according to different viewing anglesDetermine and repeatedly adjust arbitrarily. It should be noted that, in the present invention, a viewing angle can onlyImaging once, still can be carried out repeatedly imaging according to different viewing angles, and the angle of each imagingDifferent. Through the repeatedly imaging to different viewing angles, the rotation that just can complete tubular housing tissue is manyAngle curve reestablishing.
Determining after the viewing angle θ of area-of-interest, just can be by orthogonal vectorsWithThat determines adoptsOn the normal plane of sampling point, find and vectorVector into θ angleVectorWithBe just multi-angle curved surfaceThe vector interested of imaging.
According to the vector direction of definite imaging angle, obtain the tubular housing organizational information of vector direction,And according to the position relationship between the each sampled point of center line, rebuild the imaging of tubular housing tissue and show.
For the directly perceived image that shows curve reestablishing, Fig. 4 show according to the embodiment of the present invention along polygonalSpend the cross sectional representation of the tubular housing tissue of vector expansion interested. As an example of the present invention,As shown in Figure 4:
According to the vector direction of definite imaging angle, namely according to the vector at definite θ angleWithThe method that adopts interpolation to convert calculates along the tubular housing of these two vector direction and tissue around thereofInformation, then organizes the relative position relation between each sampled point according to this tubular housing, being associatedVector Groups interested be woven in a sheet of planar and show.
Corresponding with said method, the present invention also provides a kind of rotation multi-angle curved surface of tubular housing tissueReconstructing device, Fig. 5 shows the rotation multi-angle curved surface according to the tubular housing tissue of the embodiment of the present inventionReconstructing device block diagram.
As shown in Figure 5, the rotation multi-angle curve reestablishing device 500 of tubular housing tissue provided by the inventionComprise that sampling unit 510, tangent vector computing unit 520, imaging surface acquiring unit 530, imaging angle are trueOrder unit 540, imaging angle vector direction determining unit 550 and image-generating unit 560.
Wherein, sampling unit 510, for by the center line that extracts tubular housing tissue, obtains tubular cavitySampled point on soma's center line; Tangent vector computing unit 520 is for obtaining tubular housing organization centerThe tangent vector of each sampled point on line; Imaging surface acquiring unit 530 is for according to tangent vector computing unit 520The sampled point of middle tubular housing organization center line and the tangent vector of each sampled point, adopt coordinate transformation methodObtain the imaging surface of tubular housing tissue; Imaging angle determining unit 540 is for according to area-of-interestConstruction features, determine the imaging of area-of-interest in imaging surface acquiring unit 530 on the imaging surface obtainingAngle; Imaging angle vector direction determining unit 550 is for true according to 540 of imaging angle determining unitsFixed imaging angle is further specified to the vector direction of image angle degree; Image-generating unit 560 is for according to imagingOn the tubular housing organizational information of the vector direction of angle and tubular housing organization center line each sampled point itBetween position relationship, rebuild this tubular housing tissue imaging and show.
In a preferred embodiment of the present invention, imaging surface acquiring unit 530 further comprises: justHand over vectorial determining unit (not shown), flat for determining arbitrarily the method for first sampled point on center lineOrthogonal vectors on face, then according to having determined adopting of orthogonal vectors on tubular housing organization center lineOrthogonal vectors on the normal plane of sampling point and the sampled point adjacent with the sampled point of having determined orthogonal vectorsTangent vector, adopt coordinate transformation method, determine adjacent with the sampled point of having determined orthogonal vectorsOrthogonal vectors on the normal plane of sampled point.
In addition, imaging angle determining unit 540 can further include: vectorial determining unit interested(not shown), for determining two on the normal plane of the sampled point on tubular housing organization center lineThat intersect and angled vector is as vector interested, two angles that vector interested formsBe the imaging angle of area-of-interest definite in imaging angle determining unit 540.
Wherein, on the normal plane of the sampled point of vectorial determining unit interested on center line, determine twoIn the process of that intersect and angled vector as vector interested, the sampling on center lineOn the normal plane of point, determine viewing angle, by vector sum in orthogonal vectors and orthogonal vectors placeOn normal plane, form the vector of viewing angle as vector interested with vector, wherein, vectorial structure interestedThe angle becoming is the imaging angle of area-of-interest; Or, the normal plane of the sampled point on center lineUpper determine that arbitrarily two crossing and angled vectors are as vector interested.
Determine in the vector process of viewing angle in vectorial determining unit interested, adopt coordinate transformation methodObtain with tubular housing and organize one of them perpendicular vector interested, then determine in orthogonal vectorsNormal plane on, obtain another vector interested according to determined viewing angle, and angle according to the observationDegree is adjusted arbitrarily the angle of vector interested.
Statement by above embodiment can find out, rotation multi-angle curve reestablishing provided by the inventionMethod and device, by being organized on the basis of image planes at tubular housing, adopt adjustable, multi-angleVector interested, by analytical calculation and processing, realizes transversal at tubular housing tissue of vector interestedImaging neatly arbitrarily on face, person can fast and effeciently detect in tubular housing tissue to make clinical positionTiny pathology.
Describe according to the rotation of tubular housing tissue of the present invention many above with reference to accompanying drawing in the mode of exampleAngle curve reestablishing method and device. But, it will be appreciated by those skilled in the art that for above-mentioned and send outRotation multi-angle curve reestablishing method and the device of bright proposed tubular housing tissue, can also be not de-On the basis of content of the present invention, make various improvement. Therefore, protection scope of the present invention should be by appendedClaims content determine.
Claims (12)
1. a rotation multi-angle curve reestablishing method for tubular housing tissue, comprising:
By extracting the center line of tubular housing tissue, obtain the sampled point on described center line;
Obtain the tangent vector of each sampled point on described center line;
According to the tangent vector of the sampled point of described center line and each sampled point, adopt coordinate transformation method to obtainObtain the imaging surface of described tubular housing tissue;
According to the construction features of area-of-interest, on obtained imaging surface, determine the one-tenth of area-of-interestImage angle degree; Wherein, on obtained imaging surface, determine in the process of imaging angle in the emerging region of sense,On the normal plane of the sampled point on described center line, determine two phases according to the construction features of area-of-interestThat hand over and angled vector is as vector interested, two folders that described vector interested formsAngle is the imaging angle of described area-of-interest;
Determine the vector direction of described imaging angle according to described imaging angle;
According to each on the tubular housing organizational information of the vector direction of described imaging angle and described center linePosition relationship between sampled point, rebuilds the imaging of described tubular housing tissue and shows.
2. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 1, wherein,By described center line being carried out curve fitting or centered difference or front and back difference, obtain described centerThe tangent vector of each sampled point on line.
3. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 1, wherein,Described coordinate transformation method is minimum rotation frame method or moving frame method or Helical coordinate system orthogonalization.
4. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 1, wherein,In the process of imaging surface that obtains described tubular housing tissue,
Orthogonal vectors on arbitrarily definite described center line on the normal plane of first sampled point;
According to the orthogonal vectors of having determined on described center line on the normal plane of sampled point of orthogonal vectorsTangent vector with the sampled point adjacent with the described sampled point of having determined orthogonal vectors, adopts described seatMark conversion method, determines that the method for the sampled point adjacent with the described sampled point of having determined orthogonal vectors is flatOrthogonal vectors on face.
5. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 4, wherein,On the normal plane of the sampled point on described center line, determine two crossing and angled vectorsIn process as vector interested,
On the normal plane of the sampled point on described center line, determine viewing angle, by described orthogonal vectorsA vector sum and the normal plane at described orthogonal vectors place on form described viewing angle with described vectorVector as vector interested, wherein, the angle that described vector interested forms is described interestedThe imaging angle in region; Or,
On the normal plane of the sampled point on described center line, determine arbitrarily two crossing and become certain angleThe vector of degree is as vector interested.
6. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 5, wherein,In the vector process of definite described viewing angle,
Adopting described coordinate transformation method to obtain with described tubular housing organizes one of them perpendicular sense emergingInclination amount, then, on the determined normal plane of described orthogonal vectors, obtains according to determined viewing angleObtain another vector interested.
7. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 5, wherein,Adjust arbitrarily the angle of described vector interested according to described viewing angle.
8. a rotation multi-angle curve reestablishing device for tubular housing tissue, comprising:
Sampling unit, for by the center line that extracts tubular housing tissue, obtains on described center lineSampled point;
Tangent vector computing unit, for obtaining the tangent vector of each sampled point on described center line;
Imaging surface acquiring unit, for according to the sampled point of center line described in described tangent vector computing unitWith the tangent vector of each sampled point, adopt coordinate transformation method to obtain the imaging surface of tubular housing tissue;
Imaging angle determining unit, for according to the construction features of area-of-interest, obtains at described imaging surfaceGet the imaging angle of determining area-of-interest on the imaging surface that unit obtains; Wherein, described imaging angleDetermining unit further comprises: vectorial determining unit interested, for the sampled point at described center lineOn normal plane, according to the construction features of area-of-interest determine two crossing and angled toAmount is as vector interested, and the angle of two described vector formations interested is described imaging angle and determinesThe imaging angle of the described area-of-interest of determining in unit;
Imaging angle vector direction determining unit, for determined according to described imaging angle determining unitImaging angle is further determined the vector direction of described imaging angle;
Image-generating unit, for according to the tubular housing organizational information of the vector direction of described imaging angle andPosition relationship on described center line between each sampled point, rebuilds the imaging of described tubular housing tissue and showsShow.
9. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 8, wherein,Described imaging surface acquiring unit further comprises:
Orthogonal vectors determining unit, for determining arbitrarily the normal plane of first sampled point on described center lineOn orthogonal vectors, then flat according to the method for sampled point of having determined orthogonal vectors on described center lineOrthogonal vectors on face and the sampled point adjacent with the described sampled point of having determined orthogonal vectors tangentialAmount, adopts described coordinate transformation method, determines with described and has determined that the sampled point of orthogonal vectors is adjacentThe normal plane of sampled point on orthogonal vectors.
10. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 9, itsIn, on the normal plane of the sampled point of described vectorial determining unit interested on described center line, determine twoIn the process of individual crossing and angled vector as vector interested,
On the normal plane of the sampled point on described center line, determine viewing angle, by described orthogonal vectorsA vector sum and the normal plane at described orthogonal vectors place on form described viewing angle with described vectorVector as vector interested, wherein, the angle that described vector interested forms is described interestedThe imaging angle in region; Or,
On the normal plane of the sampled point on described center line, determine arbitrarily two crossing and become certain angleThe vector of degree is as vector interested.
The rotation multi-angle curve reestablishing device of 11. tubular housing tissues as claimed in claim 10, itsIn, determine in the vector process of described viewing angle in described vectorial determining unit interested,
Adopting described coordinate transformation method to obtain with described tubular housing organizes one of them perpendicular sense emergingInclination amount, then, on the determined normal plane of described orthogonal vectors, obtains according to determined viewing angleObtain another vector interested.
The rotation multi-angle curve reestablishing device of 12. tubular housing tissues as claimed in claim 10, itsIn, determine in the vector process of described viewing angle in described vectorial determining unit interested, according to describedThe imaging angle of area-of-interest is adjusted arbitrarily the angle of described vector interested.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336004A (en) | 2014-06-27 | 2016-02-17 | 华为技术有限公司 | Curved surface model creating method and device |
| WO2017114479A1 (en) | 2015-12-31 | 2017-07-06 | 上海联影医疗科技有限公司 | Image processing method and system |
| CN105550985B (en) * | 2015-12-31 | 2018-11-30 | 上海联影医疗科技有限公司 | Organ cavity wall method of deploying |
| CN112397198A (en) * | 2020-11-17 | 2021-02-23 | 上海商汤智能科技有限公司 | Image processing method and device, electronic equipment and storage medium |
| CN112529821B (en) * | 2021-02-07 | 2021-05-14 | 南京景三医疗科技有限公司 | Method for removing CPR image artifact |
| CN112734917B (en) * | 2021-03-29 | 2021-07-06 | 杭州晟视科技有限公司 | Three-dimensional curved surface reconstruction and optimization method, system and storage medium of medical data |
| CN114299254B (en) * | 2021-12-20 | 2022-11-15 | 北京朗视仪器股份有限公司 | Surface nerve unfolding method and device based on curved surface reconstruction and electronic equipment |
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