CN115954090A - Artificial tooth manufacturing method based on cartoon process - Google Patents
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Abstract
The invention provides a method for manufacturing a false tooth based on a cartoon process, which comprises the steps of carrying out three-dimensional scanning on a gum, and obtaining a three-dimensional model of each existing tooth as existing three-dimensional data; acquiring a three-dimensional model of the denture as generated three-dimensional data; calculating to obtain a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data; the three-dimensional dispersion ring is used for regulating and controlling the coloring parameters of the false tooth, so that the production efficiency is effectively improved.
Description
Technical Field
The invention belongs to the field of data analysis and parameter regulation and control, and particularly relates to a caricature manufacturing method based on a cartoon process.
Background
The key point of artificial tooth manufacturing based on the cartoon process lies in the control of colors of artificial teeth, and the phenomenon of tragic white or overyellow is easy to appear in the traditional artificial tooth coloring process, so that a user can hardly generate touch resistance to the artificial teeth, and the traditional artificial tooth coloring process is too long and is not suitable for large-scale industrial production, thereby influencing the development of industrial production. At present, some deep learning models such as a pre-training generation model are adopted to roughly fit the color tone between the existing tooth and the denture from the probability, and the color is close to the color by the fitting from the probability and the sensory balance between the existing tooth and the denture used by a user is not achieved, so that the technical problem of the industry is solved, the color is not inverted at all, and the expansion of production is not facilitated. Although a method for manufacturing a glazed denture is provided in patent document No. CN115315230a, glazing therein is very homogeneous and monotonous, and the glazing method is unsuitable for the fabrication of a caricature which lacks the treatment for the difference in detail of a denture. According to the research on human vision in color brightness, the brightness contrast plays a role in the perceptual organization and perceptual selection, and can be used for regulating and controlling the coloring process of the false teeth.
Disclosure of Invention
The invention aims to provide a method for manufacturing a false tooth based on a cartoon process, which solves one or more technical problems in the prior art and at least provides a beneficial selection or creation condition.
The invention provides a method and a system for manufacturing false teeth based on a cartoon process, which are used for carrying out three-dimensional scanning on a gum and acquiring a three-dimensional model of each existing tooth as existing three-dimensional data; acquiring a three-dimensional model of the denture as generated three-dimensional data; calculating to obtain a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data; and (3) using the three-dimensional dispersion ring to regulate and control the coloring parameters of the false tooth.
In order to achieve the above object, according to an aspect of the present invention, there is provided a caricature process-based dental prosthesis manufacturing method, the method including the steps of:
s100, three-dimensional scanning is carried out on the gum, and the existing three-dimensional model of each tooth is obtained and used as the existing three-dimensional data;
s200, acquiring a three-dimensional model of the false tooth as generated three-dimensional data;
s300, calculating to obtain a three-dimensional dispersive ring according to the existing three-dimensional data and the generated three-dimensional data;
and S400, using the three-dimensional dispersion ring to regulate and control the coloring parameters of the false tooth.
Further, in S100, a method of three-dimensionally scanning the gums of the user to acquire a three-dimensional model of each existing tooth as existing three-dimensional data and acquire a three-dimensional model of a denture as missing three-dimensional data includes: three-dimensional scanning and shooting of a gum are performed by using a three-dimensional scanning apparatus and an imaging apparatus, and a three-dimensional model of each existing tooth is acquired as existing three-dimensional data, respectively, wherein the three-dimensional model is composed of three-dimensional coordinate points of each point on the data type, and the existing three-dimensional data is composed of three-dimensional coordinate points of each point on the surface of each corresponding existing tooth and pixel values thereof.
Further, in S200, the method of acquiring the three-dimensional model of the denture as the three-dimensional data generation method is:
the denture can already be used for the spatial position of the missing tooth with all the vacancy on the dental bed, and the denture can be colored.
Further, in S300, the method for calculating the three-dimensional scattering rings according to the existing three-dimensional data and the generated three-dimensional data includes:
respectively constructing a three-dimensional rectangular coordinate system for the three-dimensional model of each tooth in the existing three-dimensional data, taking the geometric central point of the three-dimensional model of each tooth as the origin of the three-dimensional rectangular coordinate system, and taking the three-dimensional coordinate points of each point on the surface of each tooth corresponding to the three-dimensional model as a three-dimensional array consisting of the numerical values of the coordinates of the X axis, the Y axis and the Z axis in the three-dimensional rectangular coordinate system;
firstly, respectively carrying out three-dimensional dispersion treatment on the three-dimensional model of each tooth in the existing three-dimensional data, specifically:
recording the number of three-dimensional models containing teeth in the existing three-dimensional data as n, wherein the number of the three-dimensional models is i, i belongs to [1,n ], recording the number of the teeth with the number of i as Mov (i), the number of elements in the Mov (i) as m (i), the number of the elements in the Mov (i) as j (i), j (i) as [1,m (i) ], the number of elements Mov (i, j (i)) in the Mov (i) as j (i) and Y of the elements with the number of j (i) as m (i, j (i)) X, the number of the Y axis coordinate as m (i, j (i)) Z, and the number of the elements with the number of j (i) in the Mov (i) as m (i, j (i)) p; obtaining a visual dispersion point of mov (i, j (i)), wherein the visual dispersion point needs to satisfy the following conditions: the visual dispersion point is an element in the Mov (i), a connecting line of the element and the Mov (i, j (i)) does not overlap with other elements in the Mov (i), and if the visual dispersion point cannot be met, 3 elements with the minimum Euclidean distance in the Mov (i) are used as the visual dispersion point;
the visual dispersion Dif (i, j (i)) of the mov (i, j (i)) needs to be calculated, in particular: acquiring the visual dispersion points of the mov (i, j (i)), wherein a set of the visual dispersion points of the mov (i, j (i)) is taken as a fuset, the number of elements in the fuset is k, the number of the elements in the fuset is d, and d belongs to [1,k ], the element with the number of d in the fuset is fus (d), the value of the X-axis coordinate of the three-dimensional coordinate point corresponding to the fus (d) is fus (d) X, the value of the Y-axis coordinate is fus (d) Y, the value of the Z-axis coordinate is fus (d) Z, the value of the pixel value corresponding to the fus (d) is denoted as fus (d) p, and the calculation formula of the visual dispersion degree is as:
wherein, the superscript 2 represents squaring the numerical value, the sigmoid function represents the function mapping the variable to 0,1, each physical quantity needs to be dimensionless processed and only takes the numerical value to be numerically calculated (because in the traditional denture coloring process flow, it is not considered which local points need to be heavily compared between the existing tooth and the denture, the characteristic points which can achieve the coordinated balance relationship between the existing tooth and the denture are often difficult to capture, and in addition, compared with some deep learning models which adopt a pre-training generated model and the like to roughly fit the color tone between the existing tooth and the denture probabilistically, the behavior of fitting the color tone between the existing tooth and the denture probabilistically finds no technical pain points in the production in the industry practice, the method for calculating the degree of visual dispersion according to the present invention is based on the idea of finding, from the visual dispersion points, a feature point that brings a harmonious balance relationship between the existing teeth and the dentures, wherein the visual dispersion points require no space or block from the observation point of the target, i.e., the corresponding mov (i, j (i)), so that the observation point sufficiently extracted to the target is dispersed to the peripheral local visual range, and based on this, the numerical feature of the degree of visual dispersion is compared with the numerical feature of the three-dimensional coordinates and the numerical values of the pixels in the formula of the degree of visual dispersion Dif (i, j (i)), thereby achieving a good balance between the existing teeth and the dentures in the visual feature range, which is sufficient for the observation point extracted to be dispersed to the peripheral local visual range, the method does not need to use a neural network model with large-scale parameters, does not have high requirements or large consumption on hardware conditions, and can effectively enlarge the industrial production scale of the false tooth);
then, calculating a three-dimensional dispersion ring of each Mov (i) respectively;
and then, combining the three-dimensional dispersion rings calculated by the Mov (i) to generate three-dimensional data, and calculating to obtain a three-dimensional dispersion ring corresponding to the generated three-dimensional data.
Further, in S300, the method for calculating the three-dimensional dispersion ring for each Mov (i) is specifically:
selecting one three-dimensional coordinate point with the largest visual dispersity value in the Mov (i) as a first dispersion point in the Mov (i) and selecting one three-dimensional coordinate point with the median visual dispersity value in the three-dimensional coordinate points except the first dispersion point from the Mov (i) as a second dispersion point in the Mov (i) respectively; then, selecting a third dispersion point in the Mov (i) in a first mode, wherein the first mode specifically comprises the following steps: selecting, as points to be classified, three-dimensional coordinate points, among the three-dimensional coordinate points in the Mov (i) except the first dispersed points and the second dispersed points, wherein the visual dispersion degree value of each three-dimensional coordinate point is not greater than the visual dispersion degree of the first dispersed points and not less than the visual dispersion degree of the first dispersed points, calculating an arithmetic mean value of the visual dispersion degrees of the points to be classified as a mean value of the points to be classified, and selecting, from the points to be classified, one three-dimensional coordinate point having a smallest absolute value of a difference from the mean value of the points to be classified as a third dispersed point in the Mov (i); if the first mode cannot run, selecting a third dispersion point in the Mov (i) in a second mode, wherein the second mode specifically comprises the following steps: taking each three-dimensional coordinate point except the first dispersion point and the second dispersion point in the Mov (i) as a point to be classified, calculating an arithmetic mean value of visual dispersity of the point to be classified as a mean value of the point to be classified, and selecting one of the points to be classified, which has a non-negative difference value with the mean value of the point to be classified and has a minimum value, as a third dispersion point in the Mov (i); in the Mov (i), a plane formed by a first dispersion point, a second dispersion point and a third dispersion point in the Mov (i) is used as a three-dimensional dispersion surface of the Mov (i), a three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) and a visual dispersion degree corresponding to the three-dimensional coordinate point are obtained, an arithmetic average value of the visual dispersion degree corresponding to the three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) is calculated to be used as a three-dimensional dispersion value, and the three-dimensional dispersion surface of the Mov (i) and the corresponding three-dimensional dispersion value are stored together to be used as a three-dimensional dispersion ring corresponding to the Mov (i), namely the three-dimensional dispersion ring comprises the three-dimensional dispersion surface and the corresponding three-dimensional dispersion value; the three-dimensional dispersion surface can translate in different three-dimensional rectangular coordinate systems according to three-dimensional coordinates of the three-dimensional dispersion surface.
Further, in S300, the method for obtaining the three-dimensional dispersion ring corresponding to the generated three-dimensional data by calculation with the three-dimensional dispersion ring calculated by each Mov (i) in combination with the generated three-dimensional data specifically includes:
combining the three-dimensional dispersion rings calculated by each Mov (i) with the generated three-dimensional data, and calculating to obtain the three-dimensional dispersion rings corresponding to the generated three-dimensional data, wherein the three-dimensional dispersion rings are specifically as follows: establishing a three-dimensional rectangular coordinate system by taking the geometric center of the generated three-dimensional data as an origin, translating a three-dimensional dispersion plane in the three-dimensional dispersion ring corresponding to each Mov (i) into the three-dimensional rectangular coordinate system of the generated three-dimensional data according to the three-dimensional dispersion ring corresponding to each Mov (i), so that the three-dimensional dispersion ring corresponding to each Mov (i) is spatially overlapped with the generated three-dimensional data, recording the relationship among the overlapped points, the three-dimensional dispersion plane on which the overlapped points fall, the three-dimensional dispersion ring corresponding to the three-dimensional dispersion plane and the three-dimensional dispersion values of the three-dimensional dispersion ring corresponding to each Mov (i) so as to call data mutually, and endowing the three-dimensional dispersion values of the three-dimensional dispersion ring corresponding to the overlapped points with the overlapped points as the three-dimensional dispersion values of the overlapped points; if one coincident point is coincident with a plurality of three-dimensional dispersion rings and a plurality of three-dimensional dispersion values are given, taking the arithmetic mean of the three-dimensional dispersion values as the three-dimensional dispersion value of the coincident point; thus, unlike the three-dimensional dispersed ring of each Mov (i) in the existing three-dimensional data, in which the three-dimensional dispersed ring corresponding to the generated three-dimensional data is composed of each of the coincident points and the three-dimensional dispersed value of the coincident points, (the three-dimensional dispersed ring of each Mov (i) in the existing three-dimensional data can be regarded as a data feature refinement of the color distribution of each Mov (i), since the three-dimensional dispersed ring of each Mov (i) is the most obvious feature point in each of the three-dimensional dispersed rings, if the existing teeth are not obtrusive when viewed from the perspective of these feature points on the subsequent denture, the denture as a newly inserted oral cavity can be visually well integrated, and the three-dimensional dispersed ring corresponding to the generated three-dimensional data from the three-dimensional dispersed ring of each Mov (i) in the existing three-dimensional data substantially communicates the color correlation between the existing teeth and the denture on the mathematical model, and the characteristic of the correlation can be numerically quantified and quantifiable, so that the color appearance of the obtrusive false teeth and the existing denture can be better avoided.
Further, in S400, a method of adjusting and controlling a coloring parameter of the denture using the three-dimensional dispenser ring includes:
setting a reference color array RGB (r, g, b) for coloring the false tooth, wherein r, g, b respectively represent the numerical values of three components of the reference color;
note that the three-dimensional distribution ring corresponding to the generated three-dimensional data is Sov, sov is a set of p coincident points and three-dimensional distribution values of the coincident points as elements thereof, the number of the element in the set Sov is q, and the coincident point with the number q in Sov is Sov (q);
according to the proportion among the three-dimensional dispersion values of the coincident points, the lightness of the reference color array is regulated and controlled to be used for coloring the false tooth, and the method specifically comprises the following steps: when the specific value of the reference color array is RGB (255,255,225), the lightness corresponding to the specific value is equal to 0.990501, the ratio weight between the three-dimensional dispersion values of the coincident points is used to regulate the reference color array from RGB (255,255,225) to RGB (255,245,225), the value with the maximum three-dimensional dispersion value in Sov is obtained as DifMax, the value with the minimum three-dimensional dispersion value in Sov is obtained as diffin, the three-dimensional dispersion value corresponding to each coincident point Sov (q) is obtained as Sov (q) dif, the ratio weight of Sov (q) is w (q), the calculation formula of w (q) = (Sov (q) dif-diffin)/(DifMax-DifMin), and then the specific value of the reference color array (r, g, B) in the controllable RGB range is calculated according to w (q), for example, when w (q) is equal to 0.5, the value of g in the reference color array can also be subtracted by the highest value 255 and the lowest value 245 to obtain a controllable range of 10, and the controllable range multiplied by the proportional weight w (q) is 0.5 to obtain 5, then there is the lowest value 245 plus 5 to 250, i.e. the values of the three components R, G and B of the Sov (q) are specifically controlled to be RGB (255,250,225), and the corresponding brightness is controlled to be approximately equal to 0.977699, so that the coloring parameters of each Sov (q) are controlled according to the corresponding relationship of the corresponding part on the denture, the coloring parameters can be used for coloring the denture by using the colorant adjustment for denture coloring in the subsequent production steps, and a plurality of different dentures for the same user can also be produced in parallel by the method, the production efficiency is effectively improved.
The invention also provides a dental prosthesis manufacturing system based on the cartoon process, which comprises the following steps: the processor executes the computer program to realize steps in the dental prosthesis manufacturing method based on the cartoon process, the dental prosthesis manufacturing system based on the cartoon process can run in computing devices such as a desktop computer, a notebook computer, a palm computer and a cloud data center, and the executable system can include, but is not limited to, the processor, the memory and a server cluster, and the processor executes the computer program to run in units of the following systems:
the gum three-dimensional scanning unit is used for three-dimensionally scanning the gum and acquiring the existing three-dimensional models of all teeth as the existing three-dimensional data;
the denture three-dimensional scanning unit is used for acquiring a three-dimensional model of the denture as generated three-dimensional data;
the three-dimensional dispersion ring calculation unit is used for calculating a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data;
and the parameter regulating and controlling unit is used for regulating and controlling the coloring parameters of the false tooth by using the three-dimensional dispersion ring.
The beneficial effects of the invention are as follows: the invention provides a method and a system for manufacturing false teeth based on a cartoon process, which are used for carrying out three-dimensional scanning on a gum and acquiring a three-dimensional model of each existing tooth as existing three-dimensional data; acquiring a three-dimensional model of the denture as generated three-dimensional data; calculating to obtain a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data; the three-dimensional dispersing ring is used for regulating and controlling the coloring parameters of the false tooth, so that the production efficiency is effectively improved.
Drawings
The above and other features of the invention will be more apparent from the detailed description of the embodiments shown in the accompanying drawings in which like reference characters designate the same or similar elements, and it will be apparent that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived by those skilled in the art without inventive effort, wherein:
FIG. 1 is a flow chart of a method for manufacturing a dental prosthesis based on a caricature process;
fig. 2 is a system configuration diagram of a dental prosthesis manufacturing system based on a caricature process.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Fig. 1 is a flow chart illustrating a method for manufacturing a dental prosthesis based on a cartoon process according to the present invention, and a method and a system for manufacturing a dental prosthesis based on a cartoon process according to an embodiment of the present invention will be described with reference to fig. 1.
The invention provides a method for manufacturing a false tooth based on a cartoon process, which comprises the following steps:
s100, three-dimensional scanning is carried out on the gum, and the existing three-dimensional models of all teeth are obtained and used as existing three-dimensional data;
s200, acquiring a three-dimensional model of the false tooth as generated three-dimensional data;
s300, calculating to obtain a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data;
and S400, using the three-dimensional dispersion ring to regulate and control the coloring parameters of the false tooth.
Further, in S100, a method of three-dimensionally scanning a gum of a user, acquiring a three-dimensional model of each existing tooth as existing three-dimensional data, and acquiring a three-dimensional model of a denture as missing three-dimensional data includes: the method comprises the steps of performing three-dimensional scanning and shooting on a gum by using a three-dimensional scanning device and an image pickup device, and taking a three-dimensional model of a part of a tooth which can be scanned and shot when the full appearance of the tooth cannot be obtained due to the occlusion of a gum or an adjacent tooth in the three-dimensional scanning and shooting of the gum, and respectively obtaining the three-dimensional model of each existing tooth as existing three-dimensional data, wherein the three-dimensional model is composed of three-dimensional coordinate points of each point in the data type, the existing three-dimensional data is composed of three-dimensional coordinate points of each point on the surface of each corresponding existing tooth and numerical values of pixel values of the three-dimensional coordinate points, and the pixel values can be subjected to preprocessing including graying and normalization.
Further, in S200, acquiring a three-dimensional model of the denture as a method of generating three-dimensional data includes:
the three-dimensional model of the denture can be obtained by 3D scanning the part of the denture, which does not need to be embedded into the gingiva and is not shielded, the three-dimensional coordinate points on the generated three-dimensional data and the corresponding parts on the denture are mutually corresponding, the denture can be used for the space position of the missing tooth on the dental bed, the generated three-dimensional data can be used for generating the three-dimensional model of the denture, the generated three-dimensional data and the existing three-dimensional data can be mutually calculated in terms of data type, and the denture can be colored.
Further, in S300, the method for calculating the three-dimensional scattering rings according to the existing three-dimensional data and the generated three-dimensional data includes:
respectively constructing a three-dimensional rectangular coordinate system for the three-dimensional model of each tooth in the existing three-dimensional data, taking the geometric center point of the three-dimensional model of each tooth as the origin of the three-dimensional rectangular coordinate system, preferably, the sphere center of the minimum circumsphere of the three-dimensional model as the origin of the three-dimensional rectangular coordinate system, taking a set formed by all three-dimensional coordinate points with pixel values as the three-dimensional model, taking the three-dimensional coordinate points of all the points on the surface of each tooth corresponding to the three-dimensional model as a three-dimensional array formed by the numerical values of the coordinates of the X axis, the Y axis and the Z axis in the three-dimensional rectangular coordinate system, wherein one element in the three-dimensional model comprises one three-dimensional coordinate point and each element has a corresponding pixel value;
firstly, respectively carrying out three-dimensional dispersion treatment on the three-dimensional model of each tooth in the existing three-dimensional data, specifically:
recording the number of three-dimensional models including teeth in the existing three-dimensional data as n, wherein the number of the three-dimensional models of the teeth is i, and i belongs to [1,n ], preferably, the value of n should be greater than 50, respectively recording the three-dimensional model of the teeth with the number i as Mov (i), and setting the number of elements in the Mov (i) as m (i), the number of elements (including one three-dimensional coordinate point) in the Mov (i) as j (i), j (i) as [1,m (i) ], the number of X-axis coordinates of three-dimensional coordinate points corresponding to the element Mov (i, j (i)) with the number j (i) in the Mov (i) as m (i, j (i)) X, the number of Y-axis coordinates as m (i, j (i)) Y, and the number of Z-axis coordinates as m (i, j (i)) Z, and the number of elements with the number j (i) in the Mov (i) as m (i) corresponding to the pixel value of m (i), j (i) as m (i) j (i) as p (i); obtaining a visual dispersion point of the mov (i, j (i)), wherein the visual dispersion point needs to satisfy the following conditions: the visual dispersion point is an element in the Mov (i), a connecting line of the element and the Mov (i, j (i)) is not overlapped with other elements in the Mov (i), and if the element is not overlapped with other elements in the Mov (i), 3 elements with the minimum Euclidean distance in the Mov (i) are used as the visual dispersion point;
the visual dispersion Dif (i, j (i)) of the mov (i, j (i)) needs to be calculated, in particular: acquiring the visual dispersion points of the mov (i, j (i)), wherein a set of the visual dispersion points of the mov (i, j (i)) is taken as a fuset, the number of elements in the fuset is k, the number of the elements in the fuset is d, and d belongs to [1,k ], the element with the number of d in the fuset is fus (d), the value of the X-axis coordinate of the three-dimensional coordinate point corresponding to the fus (d) is fus (d) X, the value of the Y-axis coordinate is fus (d) Y, the value of the Z-axis coordinate is fus (d) Z, the value of the pixel value corresponding to the fus (d) is denoted as fus (d) p, and the calculation formula of the visual dispersion degree is as:
wherein, the superscript 2 represents squaring the logarithm value, and the sigmoid function represents a function for mapping variables to 0,1;
in the numerical calculation of the physical quantities having different units, it is necessary to perform dimensionless processing in order to unify the numerical correlations of the different physical quantities.
Then, calculating a three-dimensional dispersion ring of each Mov (i) respectively;
and then, combining the three-dimensional dispersion rings calculated by the Mov (i) to generate three-dimensional data, and calculating to obtain a three-dimensional dispersion ring corresponding to the generated three-dimensional data.
In S300, the method for calculating the three-dimensional dispersion ring of each Mov (i) specifically includes:
selecting one three-dimensional coordinate point with the largest visual dispersity value in the Mov (i) as a first dispersion point in the Mov (i) and selecting one three-dimensional coordinate point with the median visual dispersity value in the three-dimensional coordinate points except the first dispersion point from the Mov (i) as a second dispersion point in the Mov (i) respectively; then, selecting a third dispersion point in the Mov (i) in a first mode, wherein the first mode specifically comprises the following steps: selecting, as points to be classified, three-dimensional coordinate points, among the three-dimensional coordinate points in the Mov (i) except the first dispersed points and the second dispersed points, wherein the visual dispersion degree value of each three-dimensional coordinate point is not greater than the visual dispersion degree of the first dispersed points and not less than the visual dispersion degree of the first dispersed points, calculating an arithmetic mean value of the visual dispersion degrees of the points to be classified as a mean value of the points to be classified, and selecting, from the points to be classified, one three-dimensional coordinate point having a smallest absolute value of a difference from the mean value of the points to be classified as a third dispersed point in the Mov (i); if the first mode cannot be operated, selecting a third dispersion point in the Mov (i) by a second mode, wherein the second mode specifically comprises the following steps: taking each three-dimensional coordinate point except the first dispersion point and the second dispersion point in the Mov (i) as a point to be classified, calculating an arithmetic mean value of visual dispersity of the point to be classified as a mean value of the point to be classified, and selecting one of the points to be classified, which has a non-negative difference value with the mean value of the point to be classified and has a minimum value, as a third dispersion point in the Mov (i); in the Mov (i), a plane formed by a first dispersion point, a second dispersion point and a third dispersion point in the Mov (i) is used as a three-dimensional dispersion surface of the Mov (i), a three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) and a visual dispersion degree corresponding to the three-dimensional coordinate point are obtained, an arithmetic average value of the visual dispersion degrees corresponding to the three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) is calculated to be a three-dimensional dispersion value, and the three-dimensional dispersion surface of the Mov (i) and the corresponding three-dimensional dispersion value are stored together to be used as a three-dimensional dispersion ring corresponding to the Mov (i), namely the three-dimensional dispersion ring comprises the three-dimensional dispersion surface and the corresponding three-dimensional dispersion value; the three-dimensional dispersion surface can translate in different three-dimensional rectangular coordinate systems according to three-dimensional coordinates of the three-dimensional dispersion surface, the positive directions of all coordinate axes among the different three-dimensional rectangular coordinate systems related by the invention are unified, wherein the positive direction of a Z axis is corresponding to the direction of the palate of an oral cavity structure, and the positive directions of the coordinate axes in the horizontal direction among the three-dimensional rectangular coordinate systems related by the invention are consistent so as to facilitate numerical operation among the coordinate axes.
In S300, the method for calculating the three-dimensional dispersion ring corresponding to the generated three-dimensional data by combining the three-dimensional dispersion rings calculated by each Mov (i) with the generated three-dimensional data specifically includes:
combining the three-dimensional dispersion rings calculated by each Mov (i) with the generated three-dimensional data, and calculating to obtain the three-dimensional dispersion rings corresponding to the generated three-dimensional data, wherein the method specifically comprises the following steps: establishing a three-dimensional rectangular coordinate system by taking the geometric center of the generated three-dimensional data or the spherical center of the minimum external sphere as an origin, translating a three-dimensional dispersion plane in the three-dimensional dispersion ring corresponding to each Mov (i) into the three-dimensional rectangular coordinate system of the generated three-dimensional data according to the three-dimensional dispersion ring corresponding to each Mov (i), thereby spatially coinciding the three-dimensional dispersion ring corresponding to each Mov (i) with the generated three-dimensional data, recording the relation among the coincidence points, the three-dimensional dispersion plane on which the coincidence points fall, the three-dimensional dispersion ring corresponding to the three-dimensional dispersion plane and the three-dimensional dispersion values of the three-dimensional dispersion ring corresponding to each Mov (i) as coincidence points on the three-dimensional dispersion plane of the three-dimensional dispersion ring corresponding to each Mov (i), recording the relation among the coincidence points, the three-dimensional dispersion plane on which the coincidence points fall, the three-dimensional dispersion rings corresponding to the three-dimensional dispersion rings and the three-dimensional dispersion values of the three-dimensional dispersion rings so as to call data with each other, and then giving the three-dimensional dispersion values of the coincidence points as dispersion values of the coincidence points; if one coincident point is coincident with a plurality of three-dimensional dispersion rings and a plurality of three-dimensional dispersion values are given, taking the arithmetic mean of the three-dimensional dispersion values as the three-dimensional dispersion value of the coincident point; in this way, unlike the three-dimensional distribution loop of each Mov (i) in the existing three-dimensional data, the three-dimensional distribution loop corresponding to the generated three-dimensional data is constituted by each of the coincident points and the three-dimensional distribution value of the coincident point.
Further, in S400, the method of controlling the coloring parameters of the denture using the three-dimensional dispenser ring includes:
according to the study on the lightness of color of human vision (reference [1] Yang, fang Enyin, zheng Liang, etc.. Human eye lightness visual contrast sensitivity characteristics measure [ J ] packaging engineering, 2019, 40 (19): 6; [2] Xiqiong, qian Xiuying. Topological versus lightness perception effect [ J. Zhejiang university proceedings: science, 2011, 38 (1): 9.; [3] Malahua. Experimental study of subjective contour versus lightness, [ J ] psychological science, 1989 (03): 8-14.) showing the role of contrast in perceptual organization and perception selection, the regulation of lightness is an important means for making the color of the denture appear to be more fitted to other teeth in the oral cavity in the visual perception of later life of the user, the regulation of the coloring parameters of the denture is performed by controlling the lightness of the colored color, which can be referred to as lightness 255, and the lightness of the color can be calculated as three values, wherein the three values of RGB are 3732, and the lightness is calculated as RGB components, wherein the lightness is 3732; preferably, the specific value of the reference color array RGB (r, g, b) for coloring the denture may be RGB (255,255,225) or RGB (255,245,225), wherein the value of g in the reference color array may be 245 to 255;
setting a reference color array RGB (r, g, b) for coloring the false tooth, wherein r, g, b respectively represent the numerical values of three components of the reference color;
note that the three-dimensional distribution loop corresponding to the generated three-dimensional data is Sov, sov is a set of p coincident points and three-dimensional distribution values of the coincident points as elements thereof, the sequence number of an element in the set Sov is q, the sequence number of a coincident point in Sov is Sov (q), and the Sov (q) is associated with a corresponding part on the denture;
preferably, an embodiment of controlling the brightness of the reference color array is provided, which is specifically that: when the specific value of the reference color array is RGB (255,255,225), the lightness corresponding to the specific value is equal to 0.990501, the reference color array is adjusted from RGB (255,255,225) to RGB (255,245,225) by using the proportional weight between the three-dimensional dispersion values of the coincident points, the value with the maximum three-dimensional dispersion value in Sov is obtained as DifMax, the value with the minimum three-dimensional dispersion value in Sov is obtained as diffin, the three-dimensional dispersion value corresponding to the coincident points Sov (q) is obtained as Sov (q) dif, the proportional weight of Sov (q) is w (q), the calculation formula of w (q) is w (q) dif-diffin)/(max-DifMin), and then the specific value of the reference color array (r, g, B) in the controllable RGB range is calculated according to w (q), for example, when w (q) is equal to 0.5, the value of g in the reference color array may be further determined as a controllable range of 10 by subtracting the highest value 255 and the lowest value 245, and a controllable range multiplied by a proportional weight w (q) is 0.5 to obtain 5, and the lowest value 245 plus 5 equals 250, i.e. the values of the three components R, G and B of the Sov (q) are specifically controlled as RGB (255,250,225), and the corresponding brightness is controlled to be approximately equal to 0.977699, so that the coloring parameters of each Sov (q) are controlled according to the corresponding relationship between the respective position on the denture and the Sov (q), the coloring parameters represent the controlled RGB values, and the coloring parameters can be used for coloring the denture by adjusting the coloring agent used for coloring the denture in the subsequent production step, wherein the coloring of the positions on the denture other than the coincidence points can also be performed by fitting the RGB values of the adjacent coincidence points according to the simulated RGB values The resultant algorithm may be obtained, or the filling may be automatically generated by a computer vision model of the YOLO algorithm series, for example, from the RGB values of the existing coincident points.
The artificial tooth manufacturing system based on the cartoon process runs in any computing device of a desktop computer, a notebook computer, a palm computer or a cloud data center, and the computing device comprises: the computer program is executed by the processor to realize the steps in the method for manufacturing the artificial tooth based on the cartoon process, and the executable system can comprise, but is not limited to, a processor, a memory and a server cluster.
An embodiment of the present invention provides a dental prosthesis manufacturing system based on a cartoon process, as shown in fig. 2, the dental prosthesis manufacturing system based on the cartoon process of the embodiment includes: a processor, a memory and a computer program stored in the memory and executable on the processor, the processor implementing the steps in an embodiment of the method for producing a caricature-based dental prosthesis as described above when executing the computer program, the processor executing the computer program to run in the following system units:
the gum three-dimensional scanning unit is used for three-dimensionally scanning the gum and acquiring the existing three-dimensional models of all teeth as the existing three-dimensional data;
the denture three-dimensional scanning unit is used for acquiring a three-dimensional model of the denture as generated three-dimensional data;
the three-dimensional dispersion ring calculation unit is used for calculating a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data;
and the parameter regulating and controlling unit is used for regulating and controlling the coloring parameters of the false tooth by using the three-dimensional dispersion ring.
Preferably, all undefined variables in the present invention may be threshold values set manually if they are not defined explicitly.
The artificial tooth manufacturing system based on the cartoon process can be operated in computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud data center. The system for manufacturing the artificial tooth based on the cartoon process comprises a processor and a memory. It will be understood by those skilled in the art that the example is merely an example of a caricature process based denture fabrication method and system, and does not constitute a limitation of a caricature process based denture fabrication method and system, and may include more or less than a proportion of components, or some components in combination, or different components, for example, the caricature process based denture fabrication system may further include input-output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete component Gate or transistor logic, discrete hardware components, etc. The general processor may be a microprocessor or the processor may be any conventional processor, etc., and the processor is a control center of the dental prosthesis manufacturing system based on the cartoon process, and various interfaces and lines are used for connecting various subareas of the whole dental prosthesis manufacturing system based on the cartoon process.
The memory may be used to store the computer program and/or module, and the processor may implement various functions of the caricature-based denture production method and system by executing or executing the computer program and/or module stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The invention provides a method and a system for manufacturing false teeth based on a cartoon process, which are used for carrying out three-dimensional scanning on a gum and acquiring a three-dimensional model of each existing tooth as existing three-dimensional data; acquiring a three-dimensional model of the denture as generated three-dimensional data; calculating to obtain a three-dimensional dispersive ring according to the existing three-dimensional data and the generated three-dimensional data; the three-dimensional dispersion ring is used for regulating and controlling the coloring parameters of the false tooth, so that the production efficiency is effectively improved.
Although the present invention has been described in considerable detail and with reference to certain illustrated embodiments, it is not intended to be limited to any such details or embodiments or any particular embodiment, so as to effectively encompass the intended scope of the invention. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalents thereto.
Claims (7)
1. A method for manufacturing a dental prosthesis based on a cartoon process is characterized by comprising the following steps:
s100, three-dimensional scanning is carried out on the gum, and the existing three-dimensional models of all teeth are obtained and used as existing three-dimensional data;
s200, acquiring a three-dimensional model of the false tooth as generated three-dimensional data;
s300, calculating to obtain a three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data;
and S400, using the three-dimensional dispersion ring to regulate and control the coloring parameters of the false tooth.
2. The method for manufacturing a dental prosthesis according to claim 1, wherein in S100, the method for three-dimensionally scanning the gums of the user, acquiring the three-dimensional models of the existing teeth as the existing three-dimensional data, and acquiring the three-dimensional models of the dental prostheses as the missing three-dimensional data includes: three-dimensional scanning and photographing are performed on a gum by using a three-dimensional scanning device and an imaging device, and a three-dimensional model of each existing tooth is acquired as existing three-dimensional data respectively, wherein in the data type, the three-dimensional model is composed of three-dimensional coordinate points of each point, and the existing three-dimensional data is composed of three-dimensional coordinate points of each point on the surface of each corresponding existing tooth and pixel values of the three-dimensional coordinate points.
3. The method for manufacturing a dental prosthesis according to claim 2, wherein in S200, the method for obtaining a three-dimensional model of the dental prosthesis as the method for generating three-dimensional data comprises:
the denture can already be used for the spatial position of the missing tooth with all the vacancy on the dental bed, and the denture can be colored.
4. The method for manufacturing a dental prosthesis according to claim 2, wherein in S300, the method for calculating the three-dimensional dispersion ring according to the existing three-dimensional data and the generated three-dimensional data comprises:
respectively constructing a three-dimensional rectangular coordinate system for the three-dimensional model of each tooth in the existing three-dimensional data, taking the geometric central point of the three-dimensional model of each tooth as the origin of the three-dimensional rectangular coordinate system, and taking the three-dimensional coordinate points of each point on the surface of each tooth corresponding to the three-dimensional model as a three-dimensional array consisting of the numerical values of the coordinates of the X axis, the Y axis and the Z axis in the three-dimensional rectangular coordinate system;
firstly, respectively carrying out three-dimensional dispersion treatment on the three-dimensional model of each tooth in the existing three-dimensional data, specifically:
recording the number of three-dimensional models containing teeth in the existing three-dimensional data as n, wherein the number of the three-dimensional models is i, i belongs to [1,n ], recording the number of the teeth with the number of i as Mov (i), the number of elements in the Mov (i) as m (i), the number of the elements in the Mov (i) as j (i), j (i) as [1,m (i) ], the number of elements Mov (i, j (i)) in the Mov (i) as j (i) and Y of the elements with the number of j (i) as m (i, j (i)) X, the number of the Y axis coordinate as m (i, j (i)) Z, and the number of the elements with the number of j (i) in the Mov (i) as m (i, j (i)) p; obtaining a visual dispersion point of the mov (i, j (i)), wherein the visual dispersion point needs to satisfy the following conditions: the visual dispersion point is an element in the Mov (i), a connecting line of the element and the Mov (i, j (i)) is not overlapped with other elements in the Mov (i), and if the element is not overlapped with other elements in the Mov (i), 3 elements with the minimum Euclidean distance in the Mov (i) are used as the visual dispersion point;
the visual dispersion Dif (i, j (i)) of the mov (i, j (i)) needs to be calculated, in particular: acquiring the visual dispersion points of the mov (i, j (i)), wherein a set of the visual dispersion points of the mov (i, j (i)) is taken as a fuset, the number of elements in the fuset is k, the number of the elements in the fuset is d, and d belongs to [1,k ], the element with the number of d in the fuset is fus (d), the value of the X-axis coordinate of the three-dimensional coordinate point corresponding to the fus (d) is fus (d) X, the value of the Y-axis coordinate is fus (d) Y, the value of the Z-axis coordinate is fus (d) Z, the value of the pixel value corresponding to the fus (d) is denoted as fus (d) p, and the calculation formula of the visual dispersion degree is as:
then, calculating a three-dimensional dispersion ring of each Mov (i) respectively;
and then, combining the three-dimensional dispersion rings calculated by the Mov (i) to generate three-dimensional data, and calculating to obtain a three-dimensional dispersion ring corresponding to the generated three-dimensional data.
5. The method for manufacturing a dental prosthesis according to claim 4, wherein in step S300, the method for calculating the three-dimensional dispersion ring of each Mov (i) is specifically as follows:
selecting one three-dimensional coordinate point with the largest visual dispersity value in the Mov (i) as a first dispersion point in the Mov (i) and selecting one three-dimensional coordinate point with the median visual dispersity value in the three-dimensional coordinate points except the first dispersion point from the Mov (i) as a second dispersion point in the Mov (i) respectively; then, selecting a third dispersion point in the Mov (i) in a first mode, wherein the first mode specifically comprises the following steps: selecting, as points to be classified, three-dimensional coordinate points, among the three-dimensional coordinate points in the Mov (i) except the first dispersed points and the second dispersed points, wherein the visual dispersion degree value of each three-dimensional coordinate point is not greater than the visual dispersion degree of the first dispersed points and not less than the visual dispersion degree of the first dispersed points, calculating an arithmetic mean value of the visual dispersion degrees of the points to be classified as a mean value of the points to be classified, and selecting, from the points to be classified, one three-dimensional coordinate point having a smallest absolute value of a difference from the mean value of the points to be classified as a third dispersed point in the Mov (i); if the first mode cannot be operated, selecting a third dispersion point in the Mov (i) by a second mode, wherein the second mode specifically comprises the following steps: taking each three-dimensional coordinate point except the first dispersion point and the second dispersion point in the Mov (i) as a point to be classified, calculating an arithmetic mean value of visual dispersity of the point to be classified as a mean value of the point to be classified, and selecting one of the points to be classified, which has a non-negative difference value with the mean value of the point to be classified and has a minimum value, as a third dispersion point in the Mov (i); in the Mov (i), a plane formed by a first dispersion point, a second dispersion point and a third dispersion point in the Mov (i) is used as a three-dimensional dispersion surface of the Mov (i), a three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) and a visual dispersion degree corresponding to the three-dimensional coordinate point are obtained, an arithmetic average value of the visual dispersion degrees corresponding to the three-dimensional coordinate point falling on the three-dimensional dispersion surface in the Mov (i) is calculated to be a three-dimensional dispersion value, and the three-dimensional dispersion surface of the Mov (i) and the corresponding three-dimensional dispersion value are stored together to be used as a three-dimensional dispersion ring corresponding to the Mov (i), namely the three-dimensional dispersion ring comprises the three-dimensional dispersion surface and the corresponding three-dimensional dispersion value.
6. The method for manufacturing a dental prosthesis according to claim 5, wherein in step S300, the method for obtaining the three-dimensional dispersion ring corresponding to the generated three-dimensional data by calculation using the three-dimensional dispersion ring calculated by each Mov (i) in combination with the generated three-dimensional data includes:
combining the three-dimensional dispersion rings calculated by each Mov (i) with the generated three-dimensional data, and calculating to obtain the three-dimensional dispersion rings corresponding to the generated three-dimensional data, wherein the three-dimensional dispersion rings are specifically as follows: establishing a three-dimensional rectangular coordinate system by taking the geometric center of the generated three-dimensional data as an origin, translating a three-dimensional dispersion plane in the three-dimensional dispersion ring corresponding to each Mov (i) into the three-dimensional rectangular coordinate system of the generated three-dimensional data according to the three-dimensional dispersion ring corresponding to each Mov (i), so that the three-dimensional dispersion ring corresponding to each Mov (i) and the generated three-dimensional data are overlapped in space, recording the relationship among the coincident points, the three-dimensional dispersion plane on which the coincident points fall, the three-dimensional dispersion ring corresponding to the three-dimensional dispersion plane and the three-dimensional dispersion value of the three-dimensional dispersion ring corresponding to each Mov (i) as the coincident points, recording the relationship among the coincident points, the three-dimensional dispersion plane on which the coincident points fall, the three-dimensional dispersion ring corresponding to the three-dimensional dispersion plane and the three-dimensional dispersion value of the three-dimensional dispersion ring corresponding to the three-dimensional dispersion plane so as to call data, and endowing the three-dimensional dispersion value of the coincident points to the coincident points as the three-dimensional dispersion value of the coincident points; when a plurality of three-dimensional dispersion values are given by overlapping one overlapping point with a plurality of three-dimensional dispersion rings, the arithmetic mean of the plurality of three-dimensional dispersion values is taken as the three-dimensional dispersion value of the overlapping point.
7. The method for manufacturing a dental prosthesis according to claim 6, wherein in S400, the method for controlling coloring parameters of the dental prosthesis using the three-dimensional scattering ring comprises:
and setting a reference color array for coloring the false tooth, and regulating and controlling the reference color array according to the proportion of the three-dimensional dispersion values of the coincident points for coloring the false tooth.
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