CN106503345A - A kind of indigo printing fabric Ridge tracing method - Google Patents
A kind of indigo printing fabric Ridge tracing method Download PDFInfo
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- CN106503345A CN106503345A CN201610931819.9A CN201610931819A CN106503345A CN 106503345 A CN106503345 A CN 106503345A CN 201610931819 A CN201610931819 A CN 201610931819A CN 106503345 A CN106503345 A CN 106503345A
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- G06F30/20—Design optimisation, verification or simulation
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06F2113/00—Details relating to the application field
- G06F2113/12—Cloth
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Abstract
The invention discloses a kind of indigo printing fabric Ridge tracing method.The present invention enters row element modeling, Model Matching and grain pattern reconstruct using digital graphic images technology to blue plating sample, realizes Traditional Dermatoglyphic Pattern innovative design on the basis of grain pattern parametrization.Main technical content of the present invention includes：Grain pattern element model is set up using tensile splines curve；The grain pattern element in image is extracted using contour following algorithm, and Model Matching is carried out using Hu squares；To the parametrization grain pattern obtained after Model Matching, model parameter is mapped to target interval using mapping function, realizes the grain pattern innovative design of constant skeleton；Grain pattern skeleton is extracted by similar figures series, skeleton is carried out using parameter mapping method and is built again, place grain pattern element, realize the grain pattern innovative design of change skeleton on new skeleton.The method that the present invention is provided, can be used to solve indigo printing fabric grain pattern innovative design this bottleneck, be that new approach is opened up in the succession and development of indigo printing fabric this non-material cultural heritage.
Description
Technical field
The invention belongs to Textile Pattern Design field, and in particular to a kind of indigo printing fabric grain pattern innovative design method.
Background technology
Indigo printing fabric is the traditional textile of great characteristic among the people, is identified as national non-material cultural heritage.Blue at present
Calico Ridge tracing relies primarily on minority traditional-handwork artist, and design output capacity is limited, grain pattern innovation is difficult, becomes system
The bottleneck that about China's indigo printing fabric is passed on and developed.Although can provide for Ridge tracing by some Modern Graphic Design softwares
Convenient, but this kind of software is used as instrument, can not provide mentality of designing and method, the key problem solved in Ridge tracing.Pin
Innovative design to traditional indigo printing fabric grain pattern, still lacks effective method at present.
Content of the invention
This difficult problem is innovated for solving indigo printing fabric grain pattern, the present invention provides a kind of indigo printing fabric grain pattern innovative design side
Method, the method not only can realize the transformation and innovation in grain pattern element aspect based on existing traditional indigo printing fabric grain pattern,
The innovation in grain pattern skeleton aspect can also be realized so that improved grain pattern has abundant probability.
The present invention is achieved through the following technical solutions：First existing indigo printing fabric grain pattern is analyzed with abstract, build
Found a grain pattern element model；Then traditional indigo printing fabric grain pattern is mated using the model, realizes the modelling of grain pattern；
Finally by the Mapping and Converting to model parameter, the reconstruct and innovation of grain pattern is realized.
The main technical content of the present invention includes：
The method for designing of indigo printing fabric grain pattern comprises the steps
1) grain pattern element modeling
The universal model of grain pattern element is set up using the tensile splines curve of the closing through four nodes, described four
Node includes that two moving points and two fixing points, wherein fixing point are located in plane coordinates axle, by the model of institute's established model
Parameter change is showing the various grain pattern elements of indigo printing fabric；
2) Model Matching
On the basis of target image pretreatment, the grain pattern element in image is extracted using contour following algorithm, using Hu
The affine-invariant features of square, choose and the immediate model instance of grain pattern element, carry out affine transformation to the model instance that chooses, make
With grain pattern element maximal degree of coincidence, to substitute the original element in grain pattern, so as to complete Model Matching；
3) grain pattern reconstruct
To the parametrization grain pattern obtained after Model Matching, one or more parameters are reflected by the mapping function selected using user
Target interval is mapped to, the Ridge tracing of constant skeleton is obtained；
Or, by being clustered to grain pattern element and being classified, the similar figures series in grain pattern is obtained, by similar figures system
Row determine the skeleton point in grain pattern, connect all skeleton points and generate grain pattern skeleton, mate grain pattern skeleton using element model, pass through
The Parameters variation that user selects carries out skeleton and builds again, sampling site needs to place grain pattern unit according to user on new skeleton again
Element, obtains the Ridge tracing for changing skeleton.
Preferably, two described stationary nodes (P3, P4) are located in x-axis and y-axis respectively, and intercept is respectively -1 and 1, institute
The model parameter that states includes r1, r2, d1, d2, t, and wherein r1, r2 is respectively the radius of action of two moving points (P1, P2), d1,
D2 is respectively the deflecting angle of two moving points (P1, P2), the coefficients of tension of the t for SPL.
Preferably, the span of the model parameter：-5≤r1,r2≤5；-45°≤d1,d2≤45°；0≤t≤3.
Preferably, described step 2) concrete grammar is：Target image after gray processing, first passes through medium filtering and goes
Except noise, reuse OTSU algorithms and enter row threshold division, isolate target and background.
On the basis of the above, each the grain pattern element in target is extracted using contour following algorithm, to the grain pattern unit for extracting
Element calculates Hu squares, position of centre of gravity and area, calculates the similarity distance of grain pattern element and each model instance in model instance storehouse, i.e.,
The Euclidean distance of two Hu squares, chooses immediate model instance therewith；Affine transformation is carried out to the model instance that chooses, first will
Center of gravity of its barycenter displacement to grain pattern element so that the two barycentric coodinates is consistent；Then the difference of the two area is calculated, if being more than
Mould shapes are then progressively reduced, are otherwise progressively amplified, until the two area more than element area by zero, i.e. model instance area
Equal, zoom ratio now remembers s；Finally model instance is rotated on 0～360 °, in each angle computation model example with
The registration of grain pattern element, the angle for taking maximal degree of coincidence are designated as θ, are substituted with parameterized model instance during maximal degree of coincidence
Grain pattern element.
Preferably, the construction method in described model instance storehouse is：To five model parameters r1, r2, d1, d2, t, at which
20 values of uniform sampling are distinguished on interval, specially：T takes 0.15k, and r1, r2 take -5+0.5k, and d1, d2 take -45+4.5k,
Wherein k=0,1,2...19, each parameter has 20 values, combine 205Group parameter value, the model shape determined by one group of parameter value
Shape is a model instance, has 205Individual model instance, these model instances constitute a model instance storehouse.
The present invention utilizes the tensile splines curve of the closing of four nodes to set up the universal model of grain pattern element, using parameter
Change Matching Model and obtain new grain pattern element, the model tormulation mode of four nodes is fast and simple, and with enough
Variable element carrys out accurately mate model；Can fully excavate and transform existing indigo printing fabric grain pattern.The present invention possesses two kinds of design sides
Method, one are the Ridge tracing of constant skeleton, i.e., only change the model parameter of grain pattern element, and do not change grain pattern element entirety
Arrangement mode；Which change the model parameter of grain pattern element and the arrangement that grain pattern element is overall two for becoming the Ridge tracing of skeleton
Mode, makes improved grain pattern assume new style looks, realizes the innovative design of traditional indigo printing fabric grain pattern, is the blue print of China
New approach is opened up in the succession of figured cloth and development.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is grain pattern element model schematic diagram；
Fig. 2 (a) be model instance express various indigo printing fabric grain pattern elements section Example (on)；
Fig. 2 (b) be model instance express various indigo printing fabric grain pattern elements section Example (under)；
Fig. 3 is Model Matching process schematic；
Fig. 4 is one embodiment of constant skeleton grain pattern reconstruct；
Fig. 5 is the one embodiment for changing the reconstruct of skeleton grain pattern.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
In FIG, two active nodes are P1, P2, and two stationary nodes are P3, P4, and O points are origin or reference point.Gu
Determine node P3, P4 to be located in x-axis and y-axis respectively, intercept is respectively -1 and 1.Active node P1, P2 then can be inclined within the specific limits
From coordinate axess, its particular location is determined by radius of action (r1, r2) and deflecting angle (d1, d2).Using tensile splines curve sequentially
Connection P1, P2, P3, P4 composition is close-shaped, used as the universal model of grain pattern element.The model has r1, r2, d1, d2, t common
Five configuration parameters, the coefficients of tension of the wherein t for SPL.The span of model parameter：-5≤r1,r2≤5；-45°≤
d1,d2≤45°；0≤t≤3.
In fig. 2, listing some model instances is used for expressing various typical indigo printing fabric grain pattern elements.To five moulds
Shape parameter, distinguishes 20 values of uniform sampling, specially on its interval：T takes 0.15k, and r1, r2 take -5+0.5k, d1, d2
Take -45+4.5k, wherein k=0,1,2...19.Each parameter has 20 values, combine 205Group parameter value.By one group of parameter value
The mould shapes of determination are a model instance, have 205Individual model instance, these mould examples constitute a model instance storehouse.
Its Hu squares, position of centre of gravity and area is calculated to each model instance and is stored in model instance storehouse, for using during Model Matching.
In figure 3, original image after gray processing, first passes through medium filtering and removes noise, reuse OTSU algorithms
Enter row threshold division, isolate target and background.On this basis, each grain pattern unit in image is extracted using contour following algorithm
Plain (in figure, redness is marked).Hu squares, position of centre of gravity and area are calculated to the grain pattern element for extracting, grain pattern element and model reality is calculated
In example storehouse, the similarity distance (Euclidean distances of two Hu squares) of each model instance, chooses immediate model instance therewith.Right
The model instance of selection carries out affine transformation, first by the center of gravity of its barycenter displacement to grain pattern element so that the two barycentric coodinates
Unanimously；Then the difference of the two area is calculated, if more than zero (model instance area is more than element area) by mould shapes progressively
Reduce, otherwise progressively amplify, until the two area equation, zoom ratio now remembers s；Finally by model instance on 0～360 °
Rotation, in each angle, computation model example and the registration of grain pattern element, keep the angle, θ of maximal degree of coincidence in mind.So, stricture of vagina
Sample element is that parameterized model instance is substituted.As stated above all elements in grain pattern are substituted with model instance, just
Complete Model Matching.Wherein s, θ are the affine parameter of model instance, together with five model parameters r1, r2, d1, d2, t, they
Can use when grain pattern is reconstructed.
In the diagram, one or more model parameters are mapped to target interval by the mapping function for being selected by user, are carried out
The grain pattern reconstruct of constant skeleton.If the parameter value before and after mapping is respectively Z and Z ＇, the mapping function for reconstructing is Z ＇=f
(Z).Participate in mapping can be model parameter, or affine parameter.Some examples of mapping function are given in figure.
In Figure 5, by the skeleton of reconstruction grain pattern, and grain pattern element is reconfigured on new skeleton, be changed bone
The grain pattern reconstruct of frame.Specially：Comprehensive Hu squares and area as index, by being clustered to grain pattern element and being classified, by shape
The element that shape is similar and area is close is classified as a class (i.e. one similar figures series).For the feelings that there are multiple similar figures series
Condition, is selected to reconstruct in which series by user.Then, the similar figures series to choosing, by the ginseng of wherein each grain pattern element
Used as skeleton point, connection skeleton point obtains grain pattern skeleton to examination point (being the O points of each grain pattern element), then grain pattern skeleton is considered as list
Individual grain pattern element, mates grain pattern skeleton using element model, by parameter mapping reconstruction skeleton.Finally, provided according to user
Element number, equidistant sampling site on new skeleton place grain pattern element using element model on each point, complete to change bone
The grain pattern reconstruct of frame.The example of change skeleton grain pattern reconstruct is given in figure.
Claims (5)
1. a kind of method for designing of indigo printing fabric grain pattern, it is characterised in that comprise the steps
1) grain pattern element modeling
The universal model of grain pattern element, four described nodes are set up using the tensile splines curve of the closing through four nodes
Including two moving points and two fixing points, wherein fixing point is located in plane coordinates axle, by the model parameter of institute's established model
Change to show the various grain pattern elements of indigo printing fabric；
2) Model Matching
On the basis of target image pretreatment, the grain pattern element in image is extracted using contour following algorithm, using Hu squares
Affine-invariant features, choose with the immediate model instance of grain pattern element, to choose model instance carry out affine transformation, be allowed to
Grain pattern element maximal degree of coincidence, to substitute the original element in grain pattern, so that complete Model Matching；
3) grain pattern reconstruct
To the parametrization grain pattern obtained after Model Matching, one or more parameters are mapped to by the mapping function selected using user
Target interval, obtains the Ridge tracing of constant skeleton；
Or, by being clustered to grain pattern element and being classified, the similar figures series in grain pattern is obtained, by similar figures series really
Determine the skeleton point in grain pattern, connect all skeleton points and generate grain pattern skeleton, mate grain pattern skeleton using element model, by user
The Parameters variation of selection carries out skeleton and builds again, on new skeleton again sampling site and according to user need place grain pattern element, obtain
Ridge tracing to change skeleton.
2. indigo printing fabric Ridge tracing method according to claim 1, it is characterised in that two described stationary nodes
(P3, P4) is located in x-axis and y-axis respectively, and intercept is respectively -1 and 1, and described model parameter includes r1, r2, d1, d2, t, its
Middle r1, r2 are respectively the radius of action of two moving points (P1, P2), and d1, d2 are respectively the deviation of two moving points (P1, P2)
Angle, the coefficients of tension of the t for SPL.
3. indigo printing fabric Ridge tracing method according to claim 2, it is characterised in that the value model of the model parameter
Enclose：-5≤r1,r2≤5；-45°≤d1,d2≤45°；0≤t≤3.
4. indigo printing fabric Ridge tracing method according to claim 1, it is characterised in that described step 2) concrete grammar
For：Target image after gray processing, first passes through medium filtering and removes noise, reuse OTSU algorithms and enter row threshold division,
Isolate target and background.
On the basis of the above, each the grain pattern element in target is extracted using contour following algorithm, to the grain pattern element meter for extracting
Hu squares, position of centre of gravity and area is calculated, the similarity distance of each model instance in calculating grain pattern element and model instance storehouse, i.e., two
The Euclidean distance of Hu squares, chooses immediate model instance therewith；Affine transformation is carried out to the model instance that chooses, first which is heavy
The heart moves to the center of gravity of grain pattern element so that the two barycentric coodinates is consistent；Then the difference of the two area is calculated, if being more than zero,
I.e. mould shapes are then progressively reduced, are otherwise progressively amplified, until the two area phase more than element area by model instance area
Deng zoom ratio now note s；Finally model instance is rotated on 0～360 °, computation model example and stricture of vagina in each angle
The registration of sample element, the angle for taking maximal degree of coincidence are designated as θ, substitute stricture of vagina with parameterized model instance during maximal degree of coincidence
Sample element.
5. indigo printing fabric Ridge tracing method according to claim 4, it is characterised in that the structure in described model instance storehouse
Construction method is：To five model parameters r1, r2, d1, d2, t, 20 values of uniform sampling are distinguished on its interval, specially：
T takes 0.15k, and r1, r2 take -5+0.5k, and d1, d2 take -45+4.5k, wherein k=0, and 1,2...19, each parameter has 20 values, group
Close 205Group parameter value, the mould shapes determined by one group of parameter value are a model instance, have 205Individual model instance, this
A little model instances constitute a model instance storehouse.
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Cited By (3)
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| CN111862330A (en) * | 2020-07-16 | 2020-10-30 | 完美世界(北京)软件科技发展有限公司 | Model acquisition method and apparatus, storage medium, and electronic apparatus |
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