CN102930596A - Establishing method for three-dimensional model of vine cane plant - Google Patents
Establishing method for three-dimensional model of vine cane plant Download PDFInfo
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Abstract
The invention provides an establishing method for a three-dimensional model of a vine cane plant. The establishing method comprises the following specific steps: acquiring morphological feature information of vine, petiole and leaves of the vine cane plant; dividing the leaves into three insertion position zones according to the insertion position of the petiole on the vine; selecting a plurality of leaves from each insertion position zone and carrying out three-dimensional scanning on the selected leaves to establish a three-dimensional model for the leaves of the vine cane plant; establishing a three-dimensional model for the vine and petiole of the vine cane plant; and establishing an overall shape three-dimensional model for the vine cane plant. The establishing method provided by the invention greatly reduces the workload for data acquisition while causing the finally established three-dimensional model of the plant to have higher accuracy and precision, and so a simple and practical basic data preparation method is provided for such agricultural researches as crop plant-type analysis, calculation for physiological and ecological index of plant canopy, and the like.
Description
Technical field
The present invention relates to that general 3 d measurement data is processed or three-dimensional picture produces, relate in particular to the three-dimension modeling method of a kind of vines plants based on the three-dimensional digital data.
Background technology
For setting up the three-dimensional configuration structure of plant, part Study person has proposed the three-dimensional plant modeling method based on the morphological feature parameter, this method is at first by obtaining the morphological feature parameter on plant organ and the plant, set up the Parametric geometric model of plant major organs based on these parameters, geometric model based on each organ, in conjunction with the topological structure characteristic of plant, form the integrally-built three-dimensional modeling of plant by certain random device or each organ of Interactive Design Combination of Methods.In this method because plant organ has very complicated appearance profile, the geometric model of describing by a few parameters is difficult to rebuild the three-dimensional model extremely pressed close to true organ surface form, simultaneously in the process of combination organ geometric model, the deviation of direction, angle, size etc., the precision of the final three-dimensional plant model of setting up is not high, the gap larger with the morphosis existence of real plants.
Along with the continuous maturation of three-dimensional digital technology, the equipment such as digitizer and spatial digitizer are widely used, and also are used for gradually in recent years measurement and the reconstruction of plant three-dimensional shape by increasing researcher.
Part Study person adopts the spatial shape information of 3D digitizer herborization, such as the adnation position of organ, position angle, inclination angle, length, width, radius etc., and rebuild the three-dimensional model of phytomorph structures based on these information, particularly, this method is by the plant stem that collects, the space characteristics information of branch, set up the skeleton structure of the main limb of plant, and generate the three-dimensional model of limb in conjunction with the radius information of each branch; And the three-dimensional configuration of the organs such as plant leaf blade, fruit can be by the morphological parameters that collects from these organs, and incorporating parametric curved surface technology is rebuild; Three-dimensional configuration with leaf and fruit organ is placed on the limb three-dimensional model at last, can realize the three-dimensional reconstruction of phytomorph.Only can obtain a spatial point owing to 3D digitizer in this method at every turn, the precision of the three-dimensional model of rebuilding based on a small amount of unique points in these plant organs surface is affected, particularly to organs such as leaf with comparatively obvious morphological feature such as curling, fold, fruits, its spatial shape is difficult to only rebuild by a small amount of several space characteristics points.Therefore in the plant three-dimensional model of rebuilding, accuracy and the precision of the surface mesh of canopy leaf all have much room for improvement.
Also there is the researcher to utilize three-dimensional laser scanner to obtain the spatial data points (being commonly referred to as cloud data) of plant surface, then the three-dimensional model of reconstruct plant organ or plant from these cloud datas.Because three-dimensional laser scanner is a large amount of spatial point of plant surface rapidly, thereby can more accurately measure or rebuild the appearance profile structure of plant.But because organ is numerous in the plant canopy, occlusion issue is serious, therefore groups of people only are used for obtaining the single organ of plant (such as fruit, leaf) three-dimensional point cloud is also rebuild the three-dimensional grid model of organ, in addition, also there is part Study person large based on the measurement range that the large-scale three dimensional laser scanner has, the advantages such as measuring speed is fast, use it for the three-dimensional reconstruction of tall and big trees, rebuild like this three-dimensional plant canopy structure and the real plants that obtain and also have larger difference, the density of leaf particularly, the space towards, leaf area etc. all may be larger with physical presence error, be difficult to be applied to carry out the canopy light distribution property, the research and analysis of Characters of Plant Type etc.And if use the miniature laser spatial digitizer to obtain one by one the cloud data of organ and rebuild the three-dimensional model of organ, the three-dimensional configuration structure of then rebuilding whole strain plant needs a large amount of data acquisitions, and loaded down with trivial details later stage surface joining work for the treatment of.
Part Study person has proposed the Accurate Reconstruction that two kinds of equipment of comprehensive employing carry out the phytomorph DATA REASONING and carry out the phytomorph structure then in conjunction with the separately advantage of 3D digitizer and three-dimensional laser scanner.The method is when carrying out the collection of limb space characteristics point, owing to only plant stem and petiole are carried out the unique point collection, and with the direction of the blade grid model of when control later stage plant is rebuild, placing of petiole, but petiole towards the position angle of only having specified leaf, and can't determine the inclination angle of blade, it is the angle on blade and ground, therefore adopt in the plant three-dimensional model of the method reconstruction, the leaf inclination angle of each blade is identical (or random definite), and this leaf spatial attitude obvious and real plants is not inconsistent, thereby cause in the plant model of reconstruction, the canopy projected area, there is larger error in the statisticss such as leaf area index with true plant, greatly reduce the quality of three-dimensional reconstruction, and the accuracy that the plant canopy physical signs is calculated is further carried out in impact.
Summary of the invention
(1) technical matters to be solved
The present invention improves accuracy and the precision of setting up three-dimensional model by the three-dimension modeling method of a kind of vines plants is provided, and has reduced the data acquisition amount, reduces the plant needed data acquisition time of three-dimension modeling.
(2) technical scheme
The three-dimension modeling method of a kind of vines plants may further comprise the steps:
The information from objective pattern of S1, the tendril that obtains vines plants, blade and petiole;
S2, according to petiole on tendril the tight knot position with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses several blades and carry out 3-D scanning, is used for setting up the three-dimensional model of described vines plants blade;
S3, set up the tendril of described vines plants and the three-dimensional model of petiole;
The configuration three-dimensional model of the described vines plants of three-dimension modeling of S4, the tendril according to described vines plants, petiole and blade.
Described step S1 specifically comprises: utilize 3D digitizer to obtain respectively the information from objective pattern of tendril, blade and the petiole of described plant.
Preferably, described vines plants are take internode as unit, and described step S 1 specifically comprises: each internode obtains a preset number unique point with 3D digitizer, and one of them point is positioned at the attachment region of petiole on tendril; All the other points lay respectively at point of crossing, the blade tip place of blade and petiole, the widest part of blade the right and left.
Preferably, described preset number is 5.
Preferably, step S2 specifically comprises:
S21, from described vines plants, choose the first predetermined number plant, measure the blade amt amount of plant, then calculate the blade average of plant;
S22, based on described blade average, according to petiole on tendril the tight knot bit position, with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses the second predetermined number blade;
S23, employing spatial digitizer obtain the three dimensional point cloud of described blade from the front, and adopt the Delaunay Triangulation Method to generate the three-dimensional model of each blade from three-dimensional point cloud.
Preferably, 3 of described blade interval, tight knot position be:
The interval A in tight knot position:
Tight knot position interval B:
The interval C in tight knot position:
Preferably, step S3 specifically comprises:
S31, with the attachment region of petiole on tendril as the reference mark, represent every tendril with B-spline curves;
S32, between the attachment region on the tendril, generate a new feature point in described petiole and blade point of crossing and this petiole, and with the unique point of these three points as petiole, represent every petiole with B-spline curves, thereby the tendril and the petiole that utilize B-spline curves to represent are set up the tendril of every strain plant and the skeleton structure of petiole;
S33, based on the tendril of described every strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every curve, thereby set up the three-dimensional grid model of plant tendril and petiole.
Preferably, described step S4 specifically comprises:
S41, based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, choose at random a correspondence and the top that the three-dimensional model of the blade of tight knot position Interval Type is placed into this petiole;
S42, adjust direction and the size of the leaf three-dimensional model place, thereby finish the foundation of the configuration structure three-dimensional model of plant.
Preferably, after the described step S2, further comprise:
Three-dimensional model to the blade of described plant carries out normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Described step S41 specifically comprises:
Based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, from the leaf three-dimensional model template base, in corresponding the leaf three-dimensional model of tight knot position Interval Type, choose at random the top that a leaf three-dimensional model is placed into this petiole.
Preferably, the three-dimensional model of described blade to described plant carries out normalized, and the leaf three-dimensional model template base of setting up described plant specifically comprises:
Summit balance by three-dimensional model and summit convergent-divergent carry out normalized to the three-dimensional model of the blade of described plant; And four crucial summits of recording each leaf three-dimensional model, set up the leaf three-dimensional model template base of described plant.
(3) beneficial effect
The present invention obtains a few Main Morphology unique point on plant tendril and the leaf by 3D digitizer, obtain simultaneously the three-dimensional grid model of blade by the sampling of compact high precision spatial digitizer, can satisfy under farmland and facilities environment plant is carried out original position, the requirement of nondestructive measurement, not only make the plant three-dimensional model of final reconstruction have higher accuracy and precision, the needs that reduce the data collection task amount have more been taken into full account simultaneously, when data acquisition, only need to obtain the blade three dimensional point cloud of a few morphological feature point and 24 leaves of maximum scannings, therefore the also very suitable three-dimensional reconstruction that carries out plant population, because the blade three dimensional point cloud of scanning can reuse, need not each plant in the colony is carried out the blade 3-D scanning.The present invention can better carry out the tendril class gardening plant morphosis three-dimensional reconstruction based on measured data.Simple possible of the present invention has reached the requirement of using.
Description of drawings
Fig. 1 is the three-dimension modeling process flow diagram;
Fig. 2 is that the taxonomic features point is chosen schematic diagram;
Fig. 3 is a taxonomic features point schematic diagram that obtains;
Fig. 4 is the crucial summit of blade 3D grid curved surface and normalized schematic diagram;
Fig. 5 is the whole strain plant three-dimensional model after setting up;
The plant three-dimensional model of Fig. 6 for showing in the iso-surface patch mode.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
The present invention is directed in the greenhouse, carry out the gardening plant plant on the basis of field lossless data collection and colony's three-dimensional model is quick, the actual demand of Exact Reconstruction, morphosis characteristics according to plant, and in conjunction with the advantage of two types of three-dimensional digitized measurement equipment, realize a kind of vines plants three-dimension modeling method, under the prerequisite of the accuracy that guarantees to set up model and precision, take into full account the workload that reduces data acquisition, thereby for carrying out the Plants type analysis, the research of the agronomy such as plant canopy some eco-physiological indexes calculating provides simple and practical basic data preparation method.
Be illustrated in figure 1 as the process flow diagram of the method for three-dimension modeling, may further comprise the steps:
The information from objective pattern of S1, the tendril that obtains vines plants, blade and petiole;
S2, according to petiole on tendril the tight knot position with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses several blades and carry out 3-D scanning, is used for setting up the three-dimensional model of described vines plants blade;
S3, set up the tendril of described vines plants and the three-dimensional model of petiole;
The configuration three-dimensional model of the described vines plants of three-dimension modeling of S4, the tendril according to described vines plants, petiole and blade.
Wherein step S1 specifically comprises: utilize 3D digitizer to obtain respectively the information from objective pattern of tendril, blade and the petiole of described plant.
Described vines plants are take internode as unit, and described step S1 specifically comprises: each internode obtains a preset number unique point with 3D digitizer, and one of them point is positioned at the attachment region of petiole on tendril; All the other points lay respectively at point of crossing, the blade tip place of blade and petiole, the widest part of blade the right and left, and described preset number is 5, and these unique points not only can be determined the spatial attitude of whole strain plant, can determine the size and Orientation of each blade simultaneously.
Step S2 specifically comprises:
S21, from described vines plants, choose the first predetermined number plant, measure the blade amt amount of plant, then calculate the blade average of plant;
S22, based on described blade average, according to petiole on tendril the tight knot bit position, with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses the second predetermined number blade;
3 of blade interval, tight knot position be:
The interval A in tight knot position:
Tight knot position interval B:
The interval C in tight knot position:
S23, employing spatial digitizer obtain the three dimensional point cloud of described blade from the front, and adopt the Delaunay Triangulation Method to generate the three-dimensional model of each blade from three-dimensional point cloud.
By this method, a small amount of morphological feature point of not only having avoided only utilizing leaf is rebuild and the not high problem of canopy leaf model accuracy that causes, take full advantage of again simultaneously the plesiomorphism that plant leaf has, each blade of plant do not carried out 3-D scanning, thereby greatly reduced data acquisition time.
Step S3 specifically comprises:
S31, with the attachment region of petiole on tendril as the reference mark, represent every tendril with B-spline curves;
S32, between the attachment region on the tendril, generate a new feature point in described petiole and blade point of crossing and this petiole, and with the unique point of these three points as petiole, represent every petiole with B-spline curves, thereby the tendril and the petiole that utilize B-spline curves to represent are set up the tendril of every strain plant and the skeleton structure of petiole;
S33, based on the tendril of described every strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every curve, thereby set up the three-dimensional grid model of plant tendril and petiole.
Step S4 specifically comprises:
S41, based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, choose at random a correspondence and the top that the three-dimensional model of the blade of tight knot position Interval Type is placed into this petiole;
S42, adjust direction and the size of the leaf three-dimensional model place, thereby finish the foundation of the configuration structure three-dimensional model of plant.
After the described step S2, further comprise:
Three-dimensional model to the blade of described plant carries out normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Step S41 specifically comprises:
Based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, from the leaf three-dimensional model template base, in corresponding the leaf three-dimensional model of tight knot position Interval Type, choose at random the top that a leaf three-dimensional model is placed into this petiole.
The three-dimensional model of described blade to described plant carries out normalized, and the leaf three-dimensional model template base of setting up described plant specifically comprises:
Summit balance by three-dimensional model and summit convergent-divergent carry out normalized to the three-dimensional model of the blade of described plant; And four crucial summits of recording each leaf three-dimensional model, set up the leaf three-dimensional model template base of described plant.
The leaf three-dimensional model of setting up by 3-D scanning can reuse, be to have stored various leaf three-dimensional models in the leaf three-dimensional model template base, next time is when needing to rebuild the three-dimensional model of such climbing plant, only need obtain the information from objective pattern of tendril and petiole, in conjunction with existing leaf three-dimensional model, can adopt describing method of the present invention to carry out three-dimensional reconstruction.
The present invention specifically may further comprise the steps:
S1, obtain plant plant forms characteristic information.For tendril class gardening plants take internode as unit such as cucumber, watermelon, muskmelons, directly in the field or the greenhouse utilize 3D digitizer to obtain the spatial information of plant tendril and leaf.Method is as follows: take internode as unit, each internode comprises one section tendril and a leaf, and each internode obtains 5 spatial point as shown in Figure 2 with 3D digitizer.One of them point is positioned on the tendril, such as the p among Fig. 2
1Point is the attachment region of petiole on tendril; Other four points are chosen from leaf, wherein p
2Be the point of crossing of blade and petiole, p
3Be blade tip place, p
4And p
5Be respectively the widest part of blade the right and left, the widest part here is with respect to the blade master pulse.If the leaf on the internode has dropped or by artificial destruction, then only to obtain a point be the attachment region of petiole on tendril to this internode.
The plant forms unique point of Fig. 3 for adopting said method to obtain from a cucumber plant that comprises 13 internodes, wherein two internodes of root do not have leaf.
S2, structure leaf three-dimensional model.In the Field Plants colony of the plant of from step S1, choosing, choose 8-10 plant, measure the blade quantity of every strain plant, then calculate the leaf average Ln of plant, by petiole on tendril the tight knot bit position with the blade of this plant be divided into 3 the tight knot position interval, wherein the petiole of plant root the tight knot position be 1, the increase with joint position adds 1 successively to the top from plant root, 3 of blade interval, tight knot position be
The interval A in tight knot position:
Tight knot position interval B:
The interval C in tight knot position:
(annotate:
Be the symbol that rounds up)
From Field Plants colony, to above 3 types the blade in interval, tight knot position, choose 5-8 blade for every type, adopting the high-precision three-dimensional scanner is the three dimensional point cloud that sunny slope obtains blade from the front, and adopts the Delaunay Triangulation Method to generate the 3D grid surface model of each blade from three-dimensional point cloud.
S3, leaf three-dimensional model normalized.Each leaf three-dimensional model that step S2 is obtained, the normalized of travel direction and size, its concrete disposal route is: to each leaf three-dimensional model, in three dimensions, choose by hand two summits, respectively as root point and the blade tip point of blade, put as shown in Figure 4 A, B, and make the A point be in origin position, and B point (positive dirction) on Y-axis, be that line segment AB overlaps with Y-axis, make simultaneously three-dimensional model upwards (being that the method for average vector of three-dimensional model intermediate cam shape is for just, in the positive dirction of Z axis); Then automatically adjust three-dimensional model according to the summit balancing method, make it be in equilibrium state, the equitable Computing Principle in summit is as follows:
To leaf three-dimensional model shown in Figure 4, in three dimensions, at first all summits in the three-dimensional model are mapped to XOY plane, in XOY plane take line segment AB as the boundary line (take Y-axis as forward), the number of vertices VN on the statistics line segment AB left side
lNumber of vertices VN with the line segment AB left side
rIf, | VN
l, ﹣ VN
r|≤1, then three-dimensional model is in equilibrium state.If VN
l﹣ VN
r＞1,1 degree that then in three dimensions, a leaf three-dimensional model coiling section AB turned clockwise, otherwise (VN
l﹣ VN
r＜1) in three dimensions, leaf three-dimensional model coiling section AB is rotated counterclockwise 1 degree, then postrotational three-dimensional model is mapped to XOY plane, the number of vertices VN on the statistics line segment AB left side
l, and the number of vertices VN on the line segment AB left side
rIf, | VN
l﹣ VN
r|≤1 stops, otherwise repeats above-mentioned steps until three-dimensional model is in equilibrium state.
To automatically adjusting to each leaf three-dimensional model of equilibrium state, air line distance in the Definition Model between two summits (root point A and blade tip point B), the length that is line segment AB is length of blade, method by the summit convergent-divergent, convergent-divergent is carried out on all summits to three-dimensional model, and making the length of blade of the leaf three-dimensional model behind the convergent-divergent is 1.0cm.On this basis, the three-dimensional model behind the convergent-divergent is mapped to XOY plane, take line segment AB as the boundary line, searches leftmost summit and rightmost summit in the three-dimensional model, and the corresponding vertex in these two summit three-dimensional models before mapping is labeled as respectively C and D.
By above-mentioned summit balance and two processing of summit convergent-divergent, finish the normalized of blade, and four crucial summits of recording each leaf three-dimensional model are A, B, C, D among Fig. 4, thereby form the leaf three-dimensional model template base of this plant leaf.
S4, set up the three-dimensional grid model of plant tendril and petiole.To tendril and the petiole form reference breath that step S1 obtains, be first the p as obtaining from each internode of plant among Fig. 2 with the tendril unique point
1Point represents every tendril as the reference mark with B-spline curves, then the i.e. p as obtaining from each internode of plant among Fig. 2 to two unique points of every group of petiole
1Point and p
2Point is at first at p
1And p
2Generate a New Characteristics point pn by interpolation between the point, then with p
1, p
2With the unique point of three points of pn as each petiole, and represent with B-spline curves.Wherein the computing method of pn are as follows: p sets up an office
1And p
2Three-dimensional coordinate be respectively (x
P1, y
P1, z
P1) and (x
P2, y
P2, z
P2), then put the three-dimensional coordinate (x of pn
Pn, y
Pn, z
Pn) computing method be
x
pn＝(x
p1+x
p2)/2
y
pn＝(y
p1+y
p2)/2
z
pn=(x
p1+x
p2)/2×λ。Wherein λ is the random number between 0.5～1.2.
By top method, set up the skeleton structure of every strain plant tendril and petiole, to this skeleton structure, every B-spline curves are adopted document [Zhao Chunjiang, Lu Shenglian, Guo Xinyu, Li Changfeng, Yang Yueying, the modeling of watermelon three-dimensional configuration and Realistic Rendering technical research. Scientia Agricultura Sinica .2008, the method of the generation tendril of describing 41 (12): 4155-4163] and the grid surface of petiole generates the 3D grid curved surface of every curve, can rebuild like this three-dimensional grid model of plant tendril and petiole.
S5, set up the configuration structure three-dimensional model of plant.The plant tendril that at first reconstruction obtains to step S4 and every petiole in the petiole three-dimensional grid model, according to this petiole the tight knot position, from the leaf three-dimensional model template base that step S3 sets up, choose at random the top that a leaf three-dimensional model is placed into this petiole in corresponding the leaf three-dimensional model of tight knot position Interval Type; Then according to 4 unique points obtaining from this internode leaf in the step (1), adjust simultaneously direction and the size of the leaf three-dimensional model of placing.
How the below adjusts with direction and size that Fig. 2 and Fig. 4 are illustrated leaf three-dimensional model.As shown in Figure 2,4 unique points obtaining are respectively p
2, p
3, p
4And p
5, the three-dimensional model of choosing from the leaf three-dimensional model template base at first passes through two unique point p as shown in Figure 4
2And p
3Between distance (be line segment p
2p
3Length the leaf three-dimensional model of choosing is carried out convergent-divergent, make in the leaf three-dimensional model behind the convergent-divergent, the length of line segment AB equals line segment p
2p
3Length; Then with leaf three-dimensional model centered by the A point integrated moving to p
2Point, and make B point and the p of leaf three-dimensional model by rotation
3Point overlaps, and by coiling section AB rotating vane three-dimensional model, makes in the postrotational three-dimensional model p that the C point arrives at last
4The distance of point adds that the D point is to p
5What put (is line segment p apart from the sum minimum
4C and p
5The length sum of D line segment is minimum), thus leaf three-dimensional model direction and big or small adjustment finished.
Fig. 5 is on the basis of plant tendril and petiole three-dimensional grid model, morphological feature point according to each leaf that obtains shown in Figure 3, the whole strain plant three-dimensional grid model that adopts the method for above-mentioned steps S5 to obtain after petiole is placed leaf three-dimensional model and adjusted its size and Orientation obtains as shown in Figure 6 the plant three-dimensional model that shows in the iso-surface patch mode with it with iso-surface patch.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (10)
1. the three-dimension modeling method of vines plants is characterized in that may further comprise the steps:
The information from objective pattern of S1, the tendril that obtains vines plants, blade and petiole;
S2, according to petiole on tendril the tight knot position with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses several blades and carry out 3-D scanning, is used for setting up the three-dimensional model of described vines plants blade;
S3, set up the tendril of described vines plants and the three-dimensional model of petiole;
The configuration three-dimensional model of the described vines plants of three-dimension modeling of S4, the tendril according to described vines plants, petiole and blade.
2. method as claimed in claim 1 is characterized in that, described step S1 specifically comprises: utilize 3D digitizer to obtain respectively the information from objective pattern of tendril, blade and the petiole of described plant.
3. method as claimed in claim 2 is characterized in that, described vines plants are take internode as unit, and described step S1 specifically comprises: each internode obtains a preset number unique point with 3D digitizer, and one of them point is positioned at the attachment region of petiole on tendril; All the other points lay respectively at point of crossing, the blade tip place of blade and petiole, the widest part of blade the right and left.
4. method as claimed in claim 3 is characterized in that, described preset number is 5.
5. method as claimed in claim 1 is characterized in that, step S2 specifically comprises:
S21, from described vines plants, choose the first predetermined number plant, measure the blade amt amount of plant, then calculate the blade average of plant;
S22, based on described blade average, according to petiole on tendril the tight knot bit position, with blade be divided into 3 the tight knot position interval, each interval, tight knot position and chooses the second predetermined number blade;
S23, employing spatial digitizer obtain the three dimensional point cloud of described blade from the front, and adopt the Delaunay Triangulation Method to generate the three-dimensional model of each blade from three-dimensional point cloud.
6. method as claimed in claim 5 is characterized in that, 3 of described blade interval, tight knot position be:
The interval A in tight knot position:
Tight knot position interval B:
The interval C in tight knot position:
7. method as claimed in claim 3 is characterized in that, step S3 specifically comprises:
S31, with the attachment region of petiole on tendril as the reference mark, represent every tendril with B-spline curves;
S32, between the attachment region on the tendril, generate a new feature point in described petiole and blade point of crossing and this petiole, and with the unique point of these three points as petiole, represent every petiole with B-spline curves, thereby the tendril and the petiole that utilize B-spline curves to represent are set up the tendril of every strain plant and the skeleton structure of petiole;
S33, based on the tendril of described every strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every curve, thereby set up the three-dimensional grid model of plant tendril and petiole.
8. method as claimed in claim 1 is characterized in that, described step S4 specifically comprises:
S41, based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, choose at random a correspondence and the top that the three-dimensional model of the blade of tight knot position Interval Type is placed into this petiole;
S42, adjust direction and the size of the leaf three-dimensional model place, thereby finish the foundation of the configuration structure three-dimensional model of plant.
9. such as claim method as claimed in claim 8, it is characterized in that, after the described step S2, further comprise:
Three-dimensional model to the blade of described plant carries out normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Described step S41 specifically comprises:
Based on every petiole in the described three-dimensional grid model of step S3, according to this petiole the tight knot position, from the leaf three-dimensional model template base, in corresponding the leaf three-dimensional model of tight knot position Interval Type, choose at random the top that a leaf three-dimensional model is placed into this petiole.
10. method as claimed in claim 9 is characterized in that, the three-dimensional model of described blade to described plant carries out normalized, and the leaf three-dimensional model template base of setting up described plant specifically comprises:
Summit balance by three-dimensional model and summit convergent-divergent carry out normalized to the three-dimensional model of the blade of described plant; And four crucial summits of recording each leaf three-dimensional model, set up the leaf three-dimensional model template base of described plant.
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