CN103295262A - Rotating multi-angle surface reconstruction method and device for tubular cavity tissue - Google Patents
Rotating multi-angle surface reconstruction method and device for tubular cavity tissue Download PDFInfo
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- CN103295262A CN103295262A CN2013101906818A CN201310190681A CN103295262A CN 103295262 A CN103295262 A CN 103295262A CN 2013101906818 A CN2013101906818 A CN 2013101906818A CN 201310190681 A CN201310190681 A CN 201310190681A CN 103295262 A CN103295262 A CN 103295262A
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Abstract
The invention provides a rotating multi-angle surface reconstruction method and a device for a tubular cavity tissue. The method includes the steps of obtaining an imaging surface of the tubular cavity tissue by means of a coordinate transformation method, determining an imaging angle of an area of interest on the imaging surface based on structure characteristics of the area of interest, and reconstructing and displaying tubular cavity tissue imaging based on the tubular cavity tissue information of the determined imaging angle in the vector direction as well as the positional relationship among various sampling points on the center line of the tubular cavity tissue. With the rotating multi-angle surface reconstruction method and the device, clinical staff can use an image surface reconstructed to flexibly, easily, quickly and effectively detect small lesions in the tubular cavity tissue.
Description
Technical field
The present invention relates to the medical image processing technical field, more specifically, relate to a kind of rotation multi-angle curve reestablishing method and device of tubular housing tissue.
Background technology
(Curved Planar Reformation CPR) in the application of medical clinic applications, especially in clinical diagnosis and treatment to the tubular housing tissue, has irreplaceable auxiliary diagnosis value and significance to the curve reestablishing technology.The curve reestablishing technology is the center line of tubular housing tissues such as the bone pipeline, tooth according to facial canal, craniofacial region, does not show on piece image at the layer data of same aspect a large amount of complete and fine and smoothly.
From the clinical practice application point of view, the curve reestablishing technology can allow the clinical position person free from the layer data of magnanimity, make the clinical position person just can complete and clearly observe the whole inside and outside situation of organizing of organizing the different aspects blood vessel on piece image, thereby provides diagnosis report rapidly, exactly.
Because the clinical position person is to organizing the difference of area-of-interest, so viewing angle is also just different.At 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 curve reestablishing etc.The curve reestablishing of which kind of mode no matter, its imaging mode has certain shortcoming, especially for the tiny lesion detection in the tubular tissue, the clinical position person more is concerned about is information how to utilize the image of curve reestablishing fast and accurately to observe and measure pathological tissues, and utilize all underaction and the practicalities aspect the imaging of rebuilding tissue image of existing curve reestablishing mode, tiny interesting areas can't be observed, thereby the tiny pathology in the tissue can't be in time detected.
Summary of the invention
In view of the above problems, the rotation multi-angle curve reestablishing method and the device that the purpose of this invention is to provide a kind of tubular housing tissue so that the clinical position person utilize the image of curve reestablishing flexible, fast and effeciently detect the pathology information of tubular housing tissue.
According to an aspect of the present invention, provide a kind of rotation multi-angle curve reestablishing method of tubular housing tissue, comprising:
By extracting the center line of tubular housing tissue, obtain the sampled point on the center line;
Obtain the tangent vector of each sampled point on the center line;
According to the tangent vector of sampled point He each sampled point of center line, adopt coordinate transformation method to obtain the imaging surface of tubular housing tissue;
According to the construction features of area-of-interest, determine the imaging angle of area-of-interest at the imaging surface that obtains;
Determine the vector direction of this imaging angle according to the imaging angle;
According to the position relation between each sampled point on the tubular housing organizational information of the vector direction of imaging angle and the center line, imaging and the demonstration of rebuilding tubular housing tissue.
Wherein, in the process of the imaging surface that obtains tubular housing tissue, orthogonal vector on the normal plane of first sampled point on definite center line arbitrarily; Tangent vector according to the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on the center line and the sampled point adjacent with the sampled point of having determined orthogonal vector, adopt coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the sampled point of having determined orthogonal vector.
Wherein, spend in the journey determining the angle of image of area-of-interest according to the imaging surface that obtains, the normal plane of the sampled point on center line is determined viewing angle, in the normal plane of sampled point will with orthogonal vector in a vector constitute the vector of viewing angle as vector interested, wherein, the angle of a vector in vector interested and the orthogonal vector 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, comprising:
Sampling unit is used for obtaining the sampled point on the center line by extracting the center line of tubular housing tissue;
The tangent vector computing unit is for the tangent vector that obtains each sampled point on the center line;
The imaging surface acquiring unit is used for the tangent vector according to sampled point He each sampled point of tangent vector computing unit center line, adopts coordinate transformation method to obtain the imaging surface of tubular housing tissue;
Imaging angle determining unit is used for the construction features according to area-of-interest, and the imaging surface that obtains at the imaging surface acquiring unit is determined the imaging angle of area-of-interest;
Imaging angle vector direction determining unit is for the vector direction that further is specified to the image angle degree according to the determined imaging angle of imaging angle determining unit;
Image-generating unit is used for according to the position relation between each sampled point on the tubular housing organizational information of vector direction and the center line, imaging and the demonstration of rebuilding tubular housing tissue.
Wherein, preferred construction is, the imaging surface acquiring unit further comprises the orthogonal vector determining unit, for the orthogonal vector on the normal plane of determining first sampled point on the described center line arbitrarily, then according to the tangent vector of the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on the described center line and the sampled point adjacent with the described sampled point of having determined orthogonal vector, adopt described coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the described sampled point of having determined orthogonal vector.
Utilize above-mentioned rotation multi-angle curve reestablishing method and device according to tubular housing tissue of the present invention, the person utilizes the image of curve reestablishing flexible, fast and effeciently detect the tiny pathology in the tubular housing tissue can to make the clinical position.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the feature that the back will describe in detail and particularly point out in the claims.Following explanation and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects only be some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
By the content of reference below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other purpose of the present invention and result will understand and easy to understand more.In the accompanying drawings:
Fig. 1 is the rotation multi-angle curve reestablishing method schematic flow sheet according to the tubular housing tissue of the embodiment of the invention;
Fig. 2 is the imaging surface synoptic diagram according to the tubular housing tissue of the embodiment of the invention;
Fig. 3 is the imaging angle cross sectional representation according to the area-of-interest of the embodiment of the invention;
Fig. 4 is the cross sectional representation along the multi-angle vectorial tubular housing tissue that launches interested according to the embodiment of the invention;
Fig. 5 is the rotation multi-angle curve reestablishing device block diagram according to the tubular housing tissue of the embodiment of the invention.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
Embodiment
Below with reference to accompanying drawing specific embodiments of the invention are described in detail.
At aforementioned curve reestablishing mode of the prior art in underaction and practicality aspect the imaging of rebuilding tissue image, can't in time detect the problem of organizing little tiny pathology, the present invention is organized on the basis of image planes at tubular housing, employing can be regulated, the vector interested of multi-angle, by analyzing, handle the imaging neatly arbitrarily on the xsect of tubular housing tissue of realization vector interested.
Fig. 1 shows the rotation multi-angle curve reestablishing method schematic flow sheet according to the tubular housing tissue of the embodiment of the invention.
As shown in Figure 1, the rotation multi-angle curve reestablishing method of tubular housing tissue provided by the invention comprises:
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 the tangent vector of sampled point He each sampled point of tubular housing organization center line, adopt coordinate transformation method to obtain the imaging surface of tubular housing tissue;
S140: according to the construction features of area-of-interest, determine the imaging angle of area-of-interest at the imaging surface that obtains;
S150: the vector direction of determining this imaging angle according to determined imaging angle;
S160: according to the position relation between each sampled point on the tubular housing organizational information of the vector direction of imaging angle and the center line, imaging and the demonstration of rebuilding tubular housing tissue.
Need to prove, in step S120, the method of obtaining the tangent vector of each sampled point on the center line has multiple, and curve match, central difference method and front and back method of difference etc. are for example arranged, and adopts any method wherein can obtain the tangent vector of each sampled point on the center line.That is to say, by curve match or central difference method or front and back method of difference, obtain the tangent vector of each sampled point on the center line.Embodiment below is that example describes with the tangent vector that adopts the curve fitting method to obtain each sampled point on the center line.
In step S130, coordinate transformation method also has multiple, coordinate transformation methods such as minimum rotation frame method, moving frame method and spiral orthogonal coordinateization are for example arranged, wherein, in wherein any one coordinate transformation method that adopts, as long as two vectors that guarantee to obtain are distinguished pairwise orthogonal with tangent vector, the relation of the coordinate system that is orthogonal is just passable.That is to say that coordinate transformation method is minimum rotation frame method or moving frame method or spiral orthogonal coordinateization.In the statement of below specific embodiment, come the process of the imaging surface that obtains the tubular housing tissue is done exemplary illustration as coordinate transformation method with minimum rotation frame method.
Wherein, in the process of the imaging surface that obtains tubular housing tissue, orthogonal vector on the normal plane of first sampled point on the definite tubular housing organization center line arbitrarily; Tangent vector according to the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on this center line and the sampled point adjacent with the sampled point of having determined orthogonal vector, adopt coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the sampled point of having determined orthogonal vector.
Wherein, first sampled point is determined in upper end or bottom according to tubular housing organization center line, in the present invention, adopt the upper end of tubular housing organization center line as first sampled point, the position of adjacent with the sampled point of having determined orthogonal vector so sampled point is in the below of the sampled point of having determined orthogonal vector.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 vector so sampled point is in the top of the sampled point of having determined orthogonal vector.
Need to prove, mentioned imaging surface, normal plane and xsect all is same at the curve reestablishing process middle finger of tubular housing tissue among the present invention, but for the convenience of explaining, can select different form of presentations for use according to the needs of reality statement in the embodiment explanation below.
In order to describe the process of the imaging surface that obtains the tubular housing tissue among the present invention in detail, Fig. 2 shows the imaging surface synoptic diagram according to the tubular housing tissue of the embodiment of the invention.
As an example of the present invention, as shown in Figure 2:
(1) gets first sampled point X in the upper end of the center line of tubular housing tissue
1, determine first sampled point X then
1Normal plane on two orthogonal vector
With
Wherein, choose two orthogonal vector arbitrarily according to right hand orthogon theory
With
As first sampled point X
1Normal plane on orthogonal vector, make orthogonal vector
With first sampled point X
1Tangent vector
Constitute an orthonormal system.
(2) adopt minimum computing method of rotating frame, according to determined first sampled point X
1Two orthogonal vector
With
And second sampled point X
2Tangent vector
Determine two orthogonal vector on the normal plane of second sampled point
With
Wherein, adopt the method for minimum rotation frame in computation process, for given spatial parameter curve r (t), establishing its unit tangent vector is e
1(t), then satisfy e
1(t) (e
2(t) * e
3(t)) ordered vector group { e=1
1(t), e
2(t), e
3(t) } be the adaptability frame.Wherein, e
2(t) and e
3(t) be pairwise orthogonal vector in the normal plane.Yet different adaptability frames can transform mutually by the product of quadrature rotation matrix, for common adaptability frame Frenet frame t, n, b}, wherein
And for the adaptability frame { e of space curve
1(t), e
2(t), e
3(t) }, its angular velocity vector ω is only relevant with latter two component, i.e. ω=β e
2(t)+γ e
3And β=e' (t),
3(t) e
1(t), γ=e
1' (t) e
2(t), claim the adaptability frame of this space curve to be minimum rotation frame.At this moment, first component is tangent vector, and latter two component is equivalent to obtain with the one degree of freedom rotation on normal plane, and frame carries out extra rotation in normal plane, and is the reference system as other frames.Wherein, the adaptability frame becomes the necessary and sufficient condition of minimum rotation frame and is: latter two component e
2(t) and e
3(t) satisfy
I=2 wherein, 3.
By above-mentioned computation process, the method that minimum is rotated frame is applied in the extraction of the orthogonal vector on the normal plane of crooked tubular housing organization center line up-sampling point, can obtain a series of and bent tube form cavity and organize perpendicular axial vector, two other axial vector all the time can be around first axial vector rotation simultaneously.
(3) by that analogy, adopt the method for minimum rotation frame that each sampled point on the tubular housing organization center line is all calculated, obtain two orthogonal vector on the normal plane of each sampled point respectively
With
To obtain the imaging surface of tubular housing tissue.
On the basis of the imaging surface that obtains the tubular housing tissue, determine the imaging angle of area-of-interest.Wherein, spend in the journey determining the angle of image of area-of-interest according to the imaging surface that obtains, the normal plane of the sampled point on tubular housing organization center line is determined two crossing and angled vectors as vector interested, and the angles that two vectors interested constitute are the imaging angle of area-of-interest.
The normal plane of the sampled point on center line is determined in two the crossing and processes of angled vector as vector interested, the normal plane of the sampled point on tubular housing organization center line is determined viewing angle, determine two vectors interested according to this viewing angle then, one is a vector in the orthogonal vector on the normal plane of this sampled point, also has one to be the vector that becomes viewing angle on the normal plane of this sampled point with this vector.That is to say, to constitute the vector of viewing angle as vector interested with these orthogonal vector on the normal plane at a vector sum in the orthogonal vector on the normal plane of this sampled point and this orthogonal vector place, and two angles that vector interested constitutes, be exactly determined viewing angle, be the imaging angle of area-of-interest; Determine arbitrarily on the normal plane of the sampled point on the tubular housing organization center line that perhaps two crossing and angled vectors are as vector interested.
By above-mentioned description to the imaging angle of determining area-of-interest as can be seen, the imaging angle of area-of-interest is made up of two vectors, the direction sensing interesting areas of these two vectors.That is to say when carrying out the curve reestablishing of tubular housing tissue, two vectors interested are arranged, these two vectors interested can be arbitrarily at an angle, and this angle that becomes is exactly the imaging angle of area-of-interest.In these two vectors interested, can fix one of them vector interested earlier, and then determine another vector interested according to this fixing vector interested.
That is to say that in these two vectors interested, one is fixing vector interested, another is unfixed.Certainly, these two interested vectors also can be unfixed, as long as it is that intersect and angled just passable that these two vectors interested satisfy, what are as for this angle, determined by the clinical position person, the method that determines is exactly the characteristics according to area-of-interest, for example shape, position relation or pathology type etc., and this angle viewing angle of determining of the normal plane of the sampled point on tubular housing organization center line just.
In the vector process that constitutes viewing angle, adopt coordinate transformation method to obtain to organize one of them perpendicular vector interested with tubular housing, on the determined normal plane of orthogonal vector, obtain another vector interested according to determined viewing angle then.
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 adopts coordinate transformation method to obtain by the tangent vector of the sampled point on the tubular housing organization center line and each point.Therefore, spend journey in order to describe the angle of image of determining area-of-interest among the present invention in detail, Fig. 3 shows the imaging angle cross sectional representation according to the area-of-interest of the embodiment of the invention.As an example of the present invention, as shown in Figure 3:
(1) chooses any one sampled point on the tubular housing organization center line, according to two orthogonal vector of this sampled point
With
In a vector
As one of them vector interested.
(2) according to the construction features of the area-of-interest that will observe in the tubular housing tissue, for example size of tubular housing tissue, orientation, structural form etc. find and vector at the normal plane of sampled point
Become the vector at θ angle
As another vector interested.
Because the area-of-interest that will observe can present different forms in the tubular housing tissue, as fillet shape, ellipse, therefore circular arc etc. can determine the viewing angle θ an of the best flexibly according to the area-of-interest construction features.According to the θ angle, the normal plane of the sampled point of determining in orthogonal vector finds and vector
Become the vector at θ angle
(3) two vectors that become the θ angle
With
As the vector interested of curve reestablishing imaging, and the θ angle is the imaging angle of area-of-interest.
The difference of angle according to the observation, vector interested also can be different, thereby the angle that forms according to vector interested is also different.So can be according to any angle of adjusting vector interested of different viewing angles, namely according to the characteristics of area-of-interest, the angle of vector interested can be determined arbitrarily also repeatedly adjust arbitrarily according to different viewing angles.Need to prove, in the present invention, viewing angle can only imaging once, but can carry out repeatedly imaging according to different viewing angles, and the angle difference of each imaging.Through the repeatedly imaging to different viewing angles, just can finish the rotation multi-angle curve reestablishing of tubular housing tissue.
After determining the viewing angle θ of area-of-interest, just can be by orthogonal vector
With
Find and vector on the normal plane of the sampled point of determining
Become the vector at θ angle
Then vectorial
With
Be the vector interested of multi-angle curved planar reformation just.
According to the vector direction of the imaging angle of determining, obtain the tubular housing organizational information of vector direction, and according to the relation of the position between each sampled point of center line, the imaging of rebuilding the tubular housing tissue shows also.
For the image that shows curve reestablishing directly perceived, Fig. 4 shows the cross sectional representation along the multi-angle vectorial tubular housing tissue that launches interested according to the embodiment of the invention.As an example of the present invention, as shown in Figure 4:
According to the vector direction of the imaging angle of determining, just according to the vector at the θ angle of determining
With
The method that adopts interpolation to convert calculates along the tubular housing of these two vector direction and organizational information on every side thereof, organize relative position relation between each sampled point according to this tubular housing then, be woven in the Vector Groups interested that is associated on one sheet of planar and show.
Corresponding with said method, the present invention also provides a kind of rotation multi-angle curve reestablishing device of tubular housing tissue, and Fig. 5 shows the rotation multi-angle curve reestablishing device block diagram according to the tubular housing tissue of the embodiment of the invention.
As shown in Figure 5, the rotation multi-angle curve reestablishing device 500 of tubular housing tissue provided by the invention comprises sampling unit 510, tangent vector computing unit 520, imaging surface acquiring unit 530, imaging angle determining unit 540, imaging angle vector direction determining unit 550 and image-generating unit 560.
Wherein, sampling unit 510 is used for obtaining the sampled point on the tubular housing organization center line by extracting the center line of tubular housing tissue; Tangent vector computing unit 520 is used for obtaining the tangent vector of each sampled point on the tubular housing organization center line; The tangent vector that imaging surface acquiring unit 530 is used for according to sampled point He each sampled point of tangent vector computing unit 520 tubular housing organization center lines adopts coordinate transformation method to obtain the imaging surface of tubular housing tissue; Imaging angle determining unit 540 is used for the construction features according to area-of-interest, and the imaging surface that obtains at imaging surface acquiring unit 530 is determined the imaging angle of area-of-interest; Imaging angle vector direction determining unit 550 is used for further being specified to according to imaging angle determining unit 540 determined imaging angles the vector direction of image angle degree; Image-generating unit 560 is used for according to the position relation between each sampled point on the tubular housing organizational information of the vector direction of imaging angle and the tubular housing organization center line, imaging and the demonstration of rebuilding this tubular housing tissue.
In a preferred embodiment of the present invention, imaging surface acquiring unit 530 further comprises: orthogonal vector determining unit (not shown), for the orthogonal vector on the normal plane of determining first sampled point on the center line arbitrarily, then according to the tangent vector of the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on the tubular housing organization center line and the sampled point adjacent with the sampled point of having determined orthogonal vector, adopt coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the sampled point of having determined orthogonal vector.
In addition, imaging angle determining unit 540 can further include: vectorial determining unit (not shown) interested, the normal plane that is used for the sampled point on tubular housing organization center line is determined two crossing and angled vectors as vector interested, and the angles that two vectors interested constitute are the imaging angle of the area-of-interest of determining in the imaging angle determining unit 540.
Wherein, vectorial determining unit interested is on the normal plane of the sampled point on the center line, determine in two the crossing and processes of angled vector as vector interested, the normal plane of the sampled point on center line is determined viewing angle, to constitute the vector of viewing angle as vector interested with vector on the normal plane at vector sum in the orthogonal vector and orthogonal vector place, wherein, the angle of vector formation interested is the imaging angle of area-of-interest; Perhaps, determine arbitrarily that on the normal plane of the sampled point on the center line 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 method to obtain to organize one of them perpendicular vector interested with tubular housing, then on the determined normal plane of orthogonal vector, obtain another vector interested according to determined viewing angle, and angle is adjusted arbitrarily the angle of vector interested according to the observation.
Statement by above embodiment as can be seen, method and the device of rotation multi-angle curve reestablishing provided by the invention, by being organized at tubular housing on the basis of image planes, employing can be regulated, the vector interested of multi-angle, by analytical calculation and processing, realize vector interested imaging neatly arbitrarily on the xsect of tubular housing tissue, the person that makes the clinical position can fast and effeciently detect the tiny pathology in the tubular housing tissue.
As above in the mode of example rotation multi-angle curve reestablishing method and device according to tubular housing tissue of the present invention have been described with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that rotation multi-angle curve reestablishing method and the device of the tubular housing tissue that proposes for the invention described above, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (14)
1. the rotation multi-angle curve reestablishing method of a tubular housing tissue comprises:
By extracting the center line of tubular housing tissue, obtain the sampled point on the described center line;
Obtain the tangent vector of each sampled point on the described center line;
According to the tangent vector of sampled point He each sampled point of described center line, adopt coordinate transformation method to obtain the imaging surface of described tubular housing tissue;
According to the construction features of area-of-interest, determine the imaging angle of area-of-interest at the imaging surface that obtains;
Determine the vector direction of described imaging angle according to described imaging angle;
According to the position relation between each sampled point on the tubular housing organizational information of the vector direction of described imaging angle and the described center line, imaging and the demonstration of rebuilding described tubular housing tissue.
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 central difference or front and back difference, obtains the tangent vector of each sampled point on the described center 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 spiral orthogonal coordinateization.
4. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 1, wherein, in the process of the imaging surface that obtains described tubular housing tissue,
Orthogonal vector on arbitrarily definite described center line on the normal plane of first sampled point;
Tangent vector according to the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on the described center line and the sampled point adjacent with the described sampled point of having determined orthogonal vector, adopt described coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the described sampled point of having determined orthogonal vector.
5. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 1 wherein, is determining that according to the imaging surface that obtains the angle of image of area-of-interest spends in the journey,
On the imaging surface of the sampled point on the described center line, determine two crossing and angled vectors as vector interested according to the construction features of area-of-interest, the angles that two described vectors interested constitute are the imaging angle of described area-of-interest.
6. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 5, wherein, the normal plane of the sampled point on described center line determines in two the crossing and processes of angled vector as vector interested,
The normal plane of the sampled point on described center line is determined viewing angle, to constitute the vector of described viewing angle as vector interested with described vector on the normal plane at a vector sum in the described orthogonal vector and described orthogonal vector place, wherein, the angle of described vector formation interested is the imaging angle of described area-of-interest; Perhaps,
Determine arbitrarily that on the normal plane of the sampled point on the described center line two crossing and angled vectors are as vector interested.
7. the rotation multi-angle curve reestablishing method of tubular housing tissue as claimed in claim 6, wherein, in the vector process of determining described viewing angle,
Adopt described coordinate transformation method to obtain to organize one of them perpendicular vector interested with described tubular housing, on the determined normal plane of described orthogonal vector, obtain another vector interested according to determined viewing angle then.
8. as the rotation multi-angle curve reestablishing method of tubular housing tissue as described in the claim 6, wherein, adjust the angle of described vector interested arbitrarily according to described viewing angle.
9. the rotation multi-angle curve reestablishing device of a tubular housing tissue comprises:
Sampling unit is used for obtaining the sampled point on the described center line by extracting the center line of tubular housing tissue;
The tangent vector computing unit is for the tangent vector that obtains each sampled point on the described center line;
The imaging surface acquiring unit is used for the tangent vector according to sampled point He each sampled point of center line described in the described tangent vector computing unit, adopts described coordinate transformation method to obtain the imaging surface of tubular housing tissue;
Imaging angle determining unit is used for the construction features according to area-of-interest, and the imaging surface that obtains at described imaging surface acquiring unit is determined the imaging angle of area-of-interest;
Imaging angle vector direction determining unit is used for the vector direction according to the further definite described imaging angle of the determined imaging angle of described imaging angle determining unit;
Image-generating unit is used for according to the position relation between each sampled point on the tubular housing organizational information of the vector direction of described imaging angle and the described center line, imaging and the demonstration of rebuilding described tubular housing tissue.
10. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 9, wherein, described imaging surface acquiring unit further comprises:
The orthogonal vector determining unit, for the orthogonal vector on the normal plane of determining first sampled point on the described center line arbitrarily, then according to the tangent vector of the orthogonal vector on the normal plane of the sampled point of having determined orthogonal vector on the described center line and the sampled point adjacent with the described sampled point of having determined orthogonal vector, adopt described coordinate transformation method, determine the orthogonal vector on the normal plane of the sampled point adjacent with the described sampled point of having determined orthogonal vector.
11. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 9, wherein, described imaging angle determining unit further comprises:
Vectorial determining unit interested, be used for the normal plane at the sampled point of described center line, determine two crossing and angled vectors as vector interested according to the construction features of area-of-interest, the angles that two described vectors interested constitute are the imaging angle of the described area-of-interest of determining in the described imaging angle determining unit.
12. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 11, wherein, described vectorial determining unit interested is determined in two the crossing and processes of angled vector as vector interested on the normal plane of the sampled point on the described center line
The normal plane of the sampled point on described center line is determined viewing angle, to constitute the vector of described viewing angle as vector interested with described vector on the normal plane at a vector sum in the described orthogonal vector and described orthogonal vector place, wherein, the angle of described vector formation interested is the imaging angle of described area-of-interest; Perhaps,
Determine arbitrarily that on the normal plane of the sampled point on the described center line two crossing and angled vectors are as vector interested.
13. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 12 wherein, is determined in the vector process of described viewing angle in described vectorial determining unit interested,
Adopt described coordinate transformation method to obtain to organize one of them perpendicular vector interested with described tubular housing, on the determined normal plane of described orthogonal vector, obtain another vector interested according to determined viewing angle then.
14. the rotation multi-angle curve reestablishing device of tubular housing tissue as claimed in claim 12, wherein, determine in the vector process of described viewing angle in described vectorial determining unit interested, adjust the angle of described vector interested according to the imaging angle of described area-of-interest arbitrarily.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105550985A (en) * | 2015-12-31 | 2016-05-04 | 上海联影医疗科技有限公司 | Organ cavity wall expanding method |
| US9811611B2 (en) | 2014-06-27 | 2017-11-07 | Huawei Technologies Co., Ltd. | Method and apparatus for creating curved surface model |
| US10748280B2 (en) | 2015-12-31 | 2020-08-18 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for image processing |
| 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 |
| CN112529821A (en) * | 2021-02-07 | 2021-03-19 | 南京景三医疗科技有限公司 | Method for removing CPR image artifact |
| CN112734917A (en) * | 2021-03-29 | 2021-04-30 | 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 |
| CN114299254A (en) * | 2021-12-20 | 2022-04-08 | 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031635A1 (en) * | 2003-09-25 | 2005-04-07 | Paieon, Inc. | System and method for three-dimensional reconstruction of a tubular organ |
| US20110025693A1 (en) * | 2009-07-28 | 2011-02-03 | Bruce Merry | Graphics processing systems |
| CN103077550A (en) * | 2012-12-10 | 2013-05-01 | 华北电力大学（保定） | Vascular four-dimensional reconstruction method in NOT gate-controlled ICUS (intravascular ultrasound) image sequence |
-
2013
- 2013-05-21 CN CN201310190681.8A patent/CN103295262B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031635A1 (en) * | 2003-09-25 | 2005-04-07 | Paieon, Inc. | System and method for three-dimensional reconstruction of a tubular organ |
| US20110025693A1 (en) * | 2009-07-28 | 2011-02-03 | Bruce Merry | Graphics processing systems |
| CN103077550A (en) * | 2012-12-10 | 2013-05-01 | 华北电力大学（保定） | Vascular four-dimensional reconstruction method in NOT gate-controlled ICUS (intravascular ultrasound) image sequence |
Non-Patent Citations (2)
| Title |
|---|
| 姚德民等: ""虚拟内窥镜关键技术的研究与临床应用"", 《生物医学工程学杂志》 * |
| 马炘等: ""改进的血管三维建模算法"", 《计算机辅助设计与图形学学报》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9811611B2 (en) | 2014-06-27 | 2017-11-07 | Huawei Technologies Co., Ltd. | Method and apparatus for creating curved surface model |
| CN105550985A (en) * | 2015-12-31 | 2016-05-04 | 上海联影医疗科技有限公司 | Organ cavity wall expanding method |
| 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 |
| US10748280B2 (en) | 2015-12-31 | 2020-08-18 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for image processing |
| US11769249B2 (en) | 2015-12-31 | 2023-09-26 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for image processing |
| 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 |
| CN112529821A (en) * | 2021-02-07 | 2021-03-19 | 南京景三医疗科技有限公司 | Method for removing CPR image artifact |
| 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 |
| CN112734917A (en) * | 2021-03-29 | 2021-04-30 | 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 |
| CN114299254A (en) * | 2021-12-20 | 2022-04-08 | 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 |
| 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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