CN102930596B - 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 general 3 d measurement data process or three-dimensional picture generation, particularly relate to a kind of three-dimension modeling method of vines plants based on three-dimensional digital data.
Background technology
For setting up the three-dimensional configuration structure of plant, part researcher proposes the three-dimensional plant modeling method based on morphological feature parameter, this method is first by obtaining the morphological feature parameter on plant organ and plant, the Parametric geometric model of plant major organs is set up based on these parameters, based on the geometric model of each organ, in conjunction with the topological structure characteristic of plant, by certain random device or the integrally-built three-dimensional modeling of each orga-nogenesis plant of Interactive Design Combination of Methods.Because plant organ has very complicated appearance profile in this method, the geometric model described by a few parameters is difficult to rebuild the three-dimensional model extremely pressed close to actual organ's configuration of surface, 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 set up is not high, there is larger gap with the morphosis of real plants.
Along with the continuous maturation of three-dimensional digital technology, the equipment such as digitizer and spatial digitizer is widely used, in recent years also gradually by increasing researcher be used for plant three-dimensional shape measurement and rebuild in.
Part researcher adopts the spatial shape information of 3D digitizer herborization, as the adnation position, position angle, inclination angle, length, width, radius etc. of organ, and based on the three-dimensional model of these information reconstruction phytomorph structures, particularly, this method is by the spatial signature information of the plant stem that collects, 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 organ such as plant leaf blade, fruit can by the morphological parameters collected from these organs, incorporating parametric curved surface technology is rebuild; Finally the three-dimensional configuration of leaf and fruit organs is placed on limb three-dimensional model, the three-dimensional reconstruction of phytomorph can be realized.Because 3D digitizer only can obtain a spatial point at every turn in this method, precision based on the three-dimensional model of a small amount of unique points reconstruction in these plant organ surfaces is affected, particularly to the organ such as leaf, fruit with the comparatively significantly morphological feature such as curling, fold, its spatial shape is difficult to rebuild only by a small amount of several space characteristics point.Therefore, in the plant three-dimensional model rebuild, accuracy and the precision of the surface mesh of canopy leaf all have much room for improvement.
Also there is researcher to utilize three-dimensional laser scanner to obtain the spatial data points (being commonly referred to as cloud data) of plant surface, then reconstruct the three-dimensional model of plant organ or plant from these cloud datas.Because three-dimensional laser scanner can a large amount of spatial point of plant surface rapidly, thus can more accurately measure or rebuild the appearance profile structure of plant.But because in plant canopy, organ is numerous, occlusion issue is serious, therefore groups of people are only used for obtaining the single organ of plant (as fruit, leaf) three-dimensional point cloud and rebuild the three-dimensional grid model of organ, in addition, also the measurement range having part researcher to have based on large-scale three dimensional laser scanner is large, the advantages such as measuring speed is fast, use it for the three-dimensional reconstruction of tall and big trees, also there is larger difference in the three-dimensional plant canopy structure that such reconstruction obtains and real plants, the particularly density of leaf, space towards, leaf area etc. all may be larger with physical presence error, be difficult to be applied to and carry out canopy light distribution property, the research and analysis of Characters of Plant Type etc.And if use miniature laser spatial digitizer obtain the cloud data of organ one by one and rebuild the three-dimensional model of organ, then the three-dimensional configuration structure of 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 researcher, then in conjunction with the respective advantage of 3D digitizer and three-dimensional laser scanner, proposes and comprehensively adopts two kinds of equipment carry out phytomorph DATA REASONING and carry out the Accurate Reconstruction of phytomorph structure.The method is when carrying out limb space characteristics point and gathering, owing to only carrying out unique point collection to plant stem and petiole, and with petiole towards the direction of blade grid model controlling to place when the later stage, plant was rebuild, but petiole towards the position angle that only specify leaf, and the inclination angle of blade cannot be determined, the i.e. angle on blade and ground, therefore in the plant three-dimensional model adopting the method to rebuild, the Leaf inclination of each blade is identical (or determining at random), and this leaf spatial attitude that is obvious and real plants is not inconsistent, thus cause in the plant model of reconstruction, canopy projection area, there is comparatively big error in the statisticss such as leaf area index and true plant, the quality of very big reduction three-dimensional reconstruction, and the accuracy of plant canopy physical signs calculating is carried out in impact further.
Summary of the invention
(1) technical matters to be solved
The present invention, by providing a kind of three-dimension modeling method of vines plants, improves accuracy and the precision of setting up three-dimensional model, reduces data acquisition amount, reduces the data obtaining time required for plant three-dimension modeling.
(2) technical scheme
A three-dimension modeling method for vines plants, comprises the following steps:
S1, obtain the information from objective pattern of the tendril of vines plants, blade and petiole;
S2, according to petiole on tendril tight knot position blade is divided into 3 tight knot position interval, each interval, tight knot position is chosen several blades and carries 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 vines plants described in the three-dimension modeling of S4, tendril according to described vines plants, petiole and blade.
Described step S1 specifically comprises: utilize 3D digitizer to obtain the information from objective pattern of the tendril of described plant, blade and petiole respectively.
Preferably, described vines plants are in units of internode, and described step S 1 specifically comprises: each internode 3D digitizer obtains a preset number unique point, and one of them point is positioned at the attachment region of petiole on tendril; All the other points lay respectively at the widest part of the point of crossing of blade and petiole, blade tip place, 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 position of tight knot position, blade is divided into 3 tight knot position interval, the second predetermined number blade is chosen in each interval, tight knot position;
S23, employing spatial digitizer obtain the three dimensional point cloud of described blade from front, and adopt Delaunay Triangulation Method from three-dimensional point cloud, generate the three-dimensional model of each blade.
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, using the attachment region of petiole on tendril as reference mark, represent every bar tendril with B-spline curves;
S32, at described petiole and generate a new feature point between blade point of crossing and the attachment region of this petiole on tendril, and using the unique point of these three points as petiole, represent every bar petiole with B-spline curves, thus the tendril utilizing B-spline curves to represent and petiole set up every tendril of strain plant and the skeleton structure of petiole;
S33, based on described every tendril of strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every bar curve, thus set up the three-dimensional grid model of plant tendril and petiole.
Preferably, described step S4 specifically comprises:
S41, based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, the three-dimensional model that random selecting one correspond to the blade of tight knot position Interval Type is placed into the top of this petiole;
S42, the direction adjusting the leaf three-dimensional model placed and size, thus complete the foundation of the configuration structure three-dimensional model of plant.
Preferably, after described step S2, comprise further:
The three-dimensional model of the blade of described plant is normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Described step S41 specifically comprises:
Based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, correspond in the leaf three-dimensional model of tight knot position Interval Type from leaf three-dimensional model template base, random selecting leaf three-dimensional model is placed into the top of this petiole.
Preferably, the three-dimensional model of the described blade to described plant is normalized, and the leaf three-dimensional model template base setting up described plant specifically comprises:
Be normalized by the summit of three-dimensional model balance and the three-dimensional model of summit convergent-divergent to the blade of described plant; And record four crucial summits of 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 morphological features point on plant tendril and leaf by 3D digitizer, obtained the three-dimensional grid model of blade by the sampling of compact high precision spatial digitizer simultaneously, can meet, under farmland and facilities environment, original position be carried out to plant, the requirement of nondestructive measurement, the final plant three-dimensional model rebuild not only is made to have higher accuracy and precision, the needs reducing data collection task amount have more been taken into full account simultaneously, the blade three dimensional point cloud obtaining a few morphological feature point and scan at most 24 leaves is only needed when data acquisition, therefore the also very applicable three-dimensional reconstruction carrying out plant population, because the blade three dimensional point cloud of scanning can reuse, without the need to carrying out blade 3-D scanning to each plant in colony.The present invention better can carry out the tendril class gardening plant morphosis three-dimensional reconstruction based on measured data.Simple possible of the present invention, reaches the requirement of application.
Accompanying drawing explanation
Fig. 1 is three-dimension modeling process flow diagram;
Fig. 2 is that taxonomic features point chooses schematic diagram;
Fig. 3 is the taxonomic features point schematic diagram obtained;
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;
Fig. 6 is the plant three-dimensional model shown in 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 greenhouse, gardening plant plant is carried out on the basis of field lossless data collection and colony's three-dimensional model is quick, the actual demand of Exact Reconstruction, according to the morphosis feature of plant, and in conjunction with the advantage of two type three-dimensional digitized measurement equipment, realize a kind of vines plants three-dimension modeling method, ensureing under the accuracy of Modling model and the prerequisite of precision, to take into full account the workload reducing data acquisition, thus for carrying out Plants type analysis, the agronomic periodicals such as plant canopy some eco-physiological indexes calculating provide simple and practical basic data preparation method.
Be illustrated in figure 1 the process flow diagram of the method for three-dimension modeling, comprise the following steps:
S1, obtain the information from objective pattern of the tendril of vines plants, blade and petiole;
S2, according to petiole on tendril tight knot position blade is divided into 3 tight knot position interval, each interval, tight knot position is chosen several blades and carries 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 vines plants described in the three-dimension modeling of S4, tendril according to described vines plants, petiole and blade.
Wherein step S1 specifically comprises: utilize 3D digitizer to obtain the information from objective pattern of the tendril of described plant, blade and petiole respectively.
Described vines plants are in units of internode, and described step S1 specifically comprises: each internode 3D digitizer obtains a preset number unique point, and one of them point is positioned at the attachment region of petiole on tendril; All the other points lay respectively at the widest part of the point of crossing of blade and petiole, blade tip place, blade the right and left, and described preset number is 5, and these unique points can not only determine the spatial attitude of whole strain plant, while can determine the size and Orientation of each blade.
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 position of tight knot position, blade is divided into 3 tight knot position interval, the second predetermined number blade is chosen in each interval, tight knot position;
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 front, and adopt Delaunay Triangulation Method from three-dimensional point cloud, generate the three-dimensional model of each blade.
By this method, not only avoid and only utilize a small amount of morphological feature point of leaf to carry out rebuilding and the not high problem of the canopy leaf model accuracy caused, take full advantage of again the morphic similarity that plant leaf has simultaneously, 3-D scanning is not carried out to each blade of plant, thus greatly reduce data acquisition time.
Step S3 specifically comprises:
S31, using the attachment region of petiole on tendril as reference mark, represent every bar tendril with B-spline curves;
S32, at described petiole and generate a new feature point between blade point of crossing and the attachment region of this petiole on tendril, and using the unique point of these three points as petiole, represent every bar petiole with B-spline curves, thus the tendril utilizing B-spline curves to represent and petiole set up every tendril of strain plant and the skeleton structure of petiole;
S33, based on described every tendril of strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every bar curve, thus set up the three-dimensional grid model of plant tendril and petiole.
Step S4 specifically comprises:
S41, based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, the three-dimensional model that random selecting one correspond to the blade of tight knot position Interval Type is placed into the top of this petiole;
S42, the direction adjusting the leaf three-dimensional model placed and size, thus complete the foundation of the configuration structure three-dimensional model of plant.
After described step S2, comprise further:
The three-dimensional model of the blade of described plant is normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Step S41 specifically comprises:
Based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, correspond in the leaf three-dimensional model of tight knot position Interval Type from leaf three-dimensional model template base, random selecting leaf three-dimensional model is placed into the top of this petiole.
The three-dimensional model of the described blade to described plant is normalized, and the leaf three-dimensional model template base setting up described plant specifically comprises:
Be normalized by the summit of three-dimensional model balance and the three-dimensional model of summit convergent-divergent to the blade of described plant; And record four crucial summits of each leaf three-dimensional model, set up the leaf three-dimensional model template base of described plant.
The leaf three-dimensional model set up by 3-D scanning can be reused, namely various leaf three-dimensional model is stored in leaf three-dimensional model template base, when needing the three-dimensional model rebuilding such climbing plant next time, only need obtain the information from objective pattern of tendril and petiole, in conjunction with existing leaf three-dimensional model, describing method of the present invention can be adopted to carry out three-dimensional reconstruction.
The present invention specifically comprises the following steps:
S1, acquisition plant information from objective pattern.For the tendril class gardening plant in units of internode such as cucumber, watermelon, muskmelon, 3D digitizer is directly utilized to obtain the spatial information of plant tendril and leaf in field or greenhouse.Method is as follows: in units of internode, and each internode comprises one section of tendril and a leaf, and each internode 3D digitizer obtains 5 spatial point as shown in Figure 2.One of them point is positioned on tendril, as the p in Fig. 2
1point is the attachment region of petiole on tendril; Other four points are chosen from leaf, wherein p
2for the point of crossing of blade and petiole, p
3for blade tip place, p
4and p
5be respectively the widest part of blade the right and left, the widest part is here relative to blade master pulse.If the leaf on internode has dropped or by artificial destruction, then this internode only obtains a point and the attachment region of petiole on tendril.
Fig. 3 is the plant forms unique point adopting said method to obtain from the cucumber plant that comprises 13 internodes, and wherein root two internodes do not have leaf.
S2, structure leaf three-dimensional model.In the Field Plants colony of the plant chosen from step S1, choose 8-10 plant, measure the blade quantity of every strain plant, then the leaf average Ln of plant is calculated, by petiole on tendril the position of tight knot position the blade of this plant is divided into 3 tight knot position interval, wherein plant root petiole tight knot position be 1, add 1 from plant root to top successively with the increase of joint position, 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:
(note:
for the symbol that rounds up)
From Field Plants colony, above 3 types to the blade in interval, tight knot position, every type chooses 5-8 blade, adopt high-precision three-dimensional scanner to obtain the three dimensional point cloud of blade from front and sunny slope, and adopt Delaunay Triangulation Method from three-dimensional point cloud, generate the 3D grid surface model of each blade.
S3, leaf three-dimensional model normalized.To each leaf three-dimensional model that step S2 obtains, the normalized of travel direction and size, its concrete disposal route is: to each leaf three-dimensional model, choose two summits by hand in three dimensions, respectively as root point and the blade tip point of blade, put A, B as shown in Figure 4, and make A point be in origin position, and B point (positive dirction) in Y-axis, namely line segment AB overlaps with Y-axis, make three-dimensional model upwards (namely the method for average vector of three-dimensional model intermediate cam shape is just, the positive dirction at Z axis) simultaneously; Then automatically adjust three-dimensional model according to summit balancing method, make it be in equilibrium state, the equitable Computing Principle in summit is as follows:
To the leaf three-dimensional model shown in Fig. 4, in three dimensions, first all summits in three-dimensional model are mapped to XOY plane, in XOY plane with line segment AB for boundary line (with Y-axis for forward), statistics the line segment AB left side number of vertices VN
lwith the number of vertices VN on 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, then turn clockwise 1 degree by leaf three-dimensional model coiling section AB in three dimensions, 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 stopping, otherwise repeat above-mentioned steps until three-dimensional model is in equilibrium state.
To each leaf three-dimensional model automatically adjusting to equilibrium state, air line distance in Definition Model between two summits (root point A and blade tip point B), namely the length of line segment AB is length of blade, by the method for summit convergent-divergent, convergent-divergent is carried out to all summits of three-dimensional model, makes the length of blade of the leaf three-dimensional model after convergent-divergent be 1.0cm.On this basis, the three-dimensional model after convergent-divergent is mapped to XOY plane, with line segment AB for boundary line, searches leftmost summit and rightmost summit in three-dimensional model, and the corresponding vertex in this two summits three-dimensional model is before the mapping labeled as C and D respectively.
By above-mentioned summit balance and summit convergent-divergent two process, complete the normalized of blade, and record A, B, C, the D in four crucial summits of each leaf three-dimensional model and Fig. 4, thus 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.The tendril that step S1 is obtained and petiole form reference breath, first by tendril unique point namely as in Fig. 2 from the p of each internode acquisition of plant
1point, as reference mark, represents every bar tendril with B-spline curves, then to two unique points often organizing petiole namely as in Fig. 2 from the p of each internode acquisition of plant
1point and p
2point, first at p
1and p
2a new unique point pn is generated, then by p by interpolation between point
1, p
2with the unique point of pn tri-points as each petiole, and represent with B-spline curves.Wherein the computing method of pn are as follows: set up an office p
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 method above, set up the skeleton structure of every strain plant tendril and petiole, to this skeleton structure, document [Zhao Chunjiang is adopted to every bar B-spline curves, 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 described 41 (12): 4155-4163] and the grid surface of petiole, generates the 3D grid curved surface of every bar curve, can rebuild the three-dimensional grid model of plant tendril and petiole like this.
S5, set up the configuration structure three-dimensional model of plant.First step S4 is rebuild to the every root petiole in the plant tendril and petiole three-dimensional grid model obtained, according to this petiole tight knot position, correspond to random selecting leaf three-dimensional model in the leaf three-dimensional model of tight knot position Interval Type and be placed into the top of this petiole from the leaf three-dimensional model template base that step S3 sets up; Then according in step (1) from 4 unique points that this internode leaf obtains, adjust the direction of leaf three-dimensional model of placing and size simultaneously.
The direction of leaf three-dimensional model is illustrated below and how size adjusts with Fig. 2 and Fig. 4.As shown in Figure 2,4 unique points of acquisition are respectively p
2, p
3, p
4and p
5, the three-dimensional model chosen from leaf three-dimensional model template base as shown in Figure 4, first passes through two unique point p
2and p
3between distance (i.e. line segment p
2p
3length convergent-divergent is carried out to the leaf three-dimensional model chosen, make in the leaf three-dimensional model after convergent-divergent, the length of line segment AB equals line segment p
2p
3length; Then leaf three-dimensional model is moved integrally p centered by A point
2point, and by rotating the B point and the p that make leaf three-dimensional model
3point overlaps, and finally by coiling section AB rotating vane three-dimensional model, makes in postrotational three-dimensional model, the p that C point arrives
4the distance of point adds that D point is to p
5minimum (the i.e. line segment p of distance sum of point
4c and p
5the length sum of D line segment is minimum), thus complete the adjustment of leaf three-dimensional model direction and size.
Fig. 5 is on the basis of plant tendril and petiole three-dimensional grid model, the morphological feature point of each leaf obtained according to Fig. 3, the method of above-mentioned steps S5 is adopted to place leaf three-dimensional model on petiole and the whole strain plant three-dimensional grid model obtained after adjusting its size and Orientation, by the plant three-dimensional model shown in iso-surface patch mode that it obtains as shown in Figure 6 with iso-surface patch.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (7)
1. a three-dimension modeling method for vines plants, is characterized in that comprising the following steps:
S1, obtain the information from objective pattern of the tendril of vines plants, blade and petiole;
S2, according to petiole on tendril tight knot position blade is divided into 3 tight knot position interval, each interval, tight knot position is chosen several blades and carries 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 vines plants described in the three-dimension modeling of S4, tendril according to described vines plants, petiole and blade;
Described step S4 specifically comprises:
S41, based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, the three-dimensional model that random selecting one correspond to the blade of tight knot position Interval Type is placed into the top of this petiole;
S42, the direction adjusting the leaf three-dimensional model placed and size, thus complete the foundation of the configuration structure three-dimensional model of plant;
After described step S2, comprise further:
The three-dimensional model of the blade of described plant is normalized, and sets up the step of the leaf three-dimensional model template base of described plant;
Described step S41 specifically comprises:
Based on the every root petiole in the three-dimensional grid model described in step S3, according to this petiole tight knot position, correspond in the leaf three-dimensional model of tight knot position Interval Type from leaf three-dimensional model template base, random selecting leaf three-dimensional model is placed into the top of this petiole;
The three-dimensional model of the described blade to described plant is normalized, and the leaf three-dimensional model template base setting up described plant specifically comprises:
Be normalized by the summit of three-dimensional model balance and the three-dimensional model of summit convergent-divergent to the blade of described plant; And record four crucial summits of each leaf three-dimensional model, set up the leaf three-dimensional model template base of described plant.
2. method as claimed in claim 1, it is characterized in that, described step S1 specifically comprises: utilize 3D digitizer to obtain the information from objective pattern of the tendril of described plant, blade and petiole respectively.
3. method as claimed in claim 2, it is characterized in that, described vines plants are in units of internode, and described step S1 specifically comprises: each internode 3D digitizer obtains a preset number unique point, and one of them is put and is positioned at the attachment region of petiole on tendril; All the other points lay respectively at the widest part of the point of crossing of blade and petiole, blade tip place, blade the right and left.
4. method as claimed in claim 3, it is characterized in that, described preset number is 5.
5. method as claimed in claim 1, it 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 position of tight knot position, blade is divided into 3 tight knot position interval, the second predetermined number blade is chosen in each interval, tight knot position;
S23, employing spatial digitizer obtain the three dimensional point cloud of described blade from front, and adopt Delaunay Triangulation Method from three-dimensional point cloud, generate the three-dimensional model of each blade.
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, it is characterized in that, step S3 specifically comprises:
S31, using the attachment region of petiole on tendril as reference mark, represent every bar tendril with B-spline curves;
S32, at described petiole and generate a new feature point between blade point of crossing and the attachment region of this petiole on tendril, and using the unique point of these three points as petiole, represent every root petiole with B-spline curves, thus the tendril utilizing B-spline curves to represent and petiole set up every tendril of strain plant and the skeleton structure of petiole;
S33, based on described every tendril of strain plant and the skeleton structure of petiole, generate the 3D grid curved surface of every bar curve, thus set up the three-dimensional grid model of plant tendril and petiole.
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