CN111814558A - Method, system, equipment and medium for measuring precision of 3D printing molded tooth model - Google Patents
Method, system, equipment and medium for measuring precision of 3D printing molded tooth model Download PDFInfo
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Abstract
The invention discloses a method, a system, equipment and a medium for measuring the precision of a 3D printing formed tooth model, wherein the method comprises the following steps: scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model; trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model; setting a comparative test object and a reference object; 3D fitting the test object to the reference object; simultaneously trimming the gum line edge curves of the test object and the reference object; 3D fitting the test object and the reference object again; setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object; an accuracy report of the 3D deviation comparison is generated. By the method, the measurement efficiency of the precision of the 3D printing molded tooth model can be improved, the workload of measuring personnel is reduced, meanwhile, the high measurement precision is guaranteed, and the method is simple, effective and high in practicability.
Description
Technical Field
The invention relates to the technical field of tooth model precision measurement, in particular to a 3D printing formed tooth model precision measurement method, a system, electronic equipment and a computer readable storage medium.
Background
The 3D printing technology is present in the mid-90 s of the 20 th century and is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination. The printer is filled with printing materials such as liquid, powder or wires, and the printing materials are overlapped layer by layer under the control of a computer after being connected with the computer, and finally, the blueprint on the computer is changed into a real object. This printing technique is called a 3D stereoscopic printing technique.
In the orthodontic field of medical treatment, the fashioned mould of stealthy correction ware is regarded as to the tooth model of 3D printing, and its precision concerns the shaping precision of stealthy correction ware, and stealthy correction ware is regarded as the instrument that the doctor realized the orthodontic treatment of tooth again, and the effect is rescued to patient's tooth to the good or bad direct influence of its precision, so the precision measurement of the fashioned tooth model of 3D printing is as a detection means, and is very important in whole link.
However, currently, for measuring the accuracy of the 3D printed and formed tooth model, a digital caliper measurement method is used to obtain the external dimensions of the tooth model, such as the width of the dental arch, the height of the teeth, and the like, and a three-coordinate measuring apparatus multi-point measurement method is used to obtain the three-dimensional dimensions of the 3D printed and formed tooth model. These methods all have the disadvantages of low measurement efficiency and low measurement accuracy, because the tooth model belongs to a complex irregular curved surface product, and a large number of measurement sampling points must be obtained to ensure high measurement accuracy, so that the time and the energy are not imaginable.
Thus, there is a need for improvements and enhancements in the art.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method, a system, equipment and a medium for measuring the precision of a 3D printing formed tooth model, and aims to solve the problems of low efficiency and low precision in the existing measuring method.
In order to achieve the purpose, the invention adopts the following technical scheme:
A3D printing formed tooth model precision measurement method, wherein the method comprises the following steps:
scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model;
setting a comparative test object and a reference object;
3D fitting the test object to the reference object;
simultaneously trimming the gum line edge curves of the test object and the reference object;
3D fitting the test object and the reference object again;
setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object;
an accuracy report of the 3D deviation comparison is generated.
The method for measuring the accuracy of the 3D printed and formed tooth model, wherein before trimming the edge curved surface of the original 3D geometric model of the tooth model to obtain the trimmed 3D model, the method further comprises:
and importing the original 3D geometric model of the tooth model into Geomagic Studio reverse graphic processing software.
The method for measuring the accuracy of the 3D printing molded tooth model comprises the following steps of:
and importing the trimmed 3D model and the original 3D geometric model into Qualify quality analysis software.
The 3D printing formed tooth model precision measuring method comprises the following steps of setting and comparing a test object and a reference object:
the test object is the pruned 3D model and the reference object is the original 3D geometric model.
The method for measuring the precision of the 3D printed and formed tooth model, wherein before the simultaneously trimming the gum line edge curved surfaces of the test object and the reference object, the method further comprises:
and simultaneously selecting the test object and the reference object and setting a selection mode.
The method for measuring the accuracy of the 3D printing molded tooth model comprises the following steps of setting a deviation display color spectrum and comparing the 3D deviation of the test object with the reference object:
and generating a chromatographic graph, wherein the chromatographic graph displays the deviation area and the deviation range of the test object and the reference object.
The method for measuring the accuracy of the 3D printed and formed tooth model further comprises the following steps of generating a chromatographic graph, and displaying the deviation area and the deviation range of the test object and the reference object on the chromatographic graph:
and clicking different color areas on the chromatographic graph and displaying numerical information of the selected points.
A 3D print molded dental model precision measurement system, wherein the system comprises:
a scanning module for scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
a pruning module for pruning an original 3D geometric model edge surface of the tooth model to obtain a pruned 3D model;
the setting object module is used for setting a compared test object and a reference object;
a fitting module for 3D fitting the test object to the reference object;
a simultaneous trimming module for simultaneously trimming the gum line edge curves of the test object and the reference object;
a refitting module for 3D refitting the test object and the reference object again;
a set color spectrum and deviation comparison module for setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object;
and the report generation module is used for generating a precision report of the 3D deviation comparison.
An electronic device, comprising a memory, a processor and a computer program stored on the memory and executable by the processor, wherein the processor implements the steps of the method for measuring the accuracy of a 3D printed tooth model according to any one of the above aspects when executing the computer program.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which when executed by a processor implements the steps of any of the above-mentioned methods for measuring the accuracy of a 3D-printed dental model.
Compared with the prior art, the invention provides a method, a system, equipment and a medium for measuring the precision of a 3D printing molded tooth model, according to the precision measuring method provided by the invention, firstly, a tooth model to be measured is scanned to obtain an original 3D geometric model of the tooth model; trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model; setting a comparative test object and a reference object; 3D fitting the test object to the reference object; simultaneously trimming the gum line edge curves of the test object and the reference object; 3D fitting the test object and the reference object again; setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object; and finally generating a precision report of the 3D deviation comparison. By the method, the measurement efficiency of the precision of the 3D printing molded tooth model can be improved, the workload of measuring personnel is reduced, meanwhile, the high measurement precision is guaranteed, and the method is simple, effective and high in practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for measuring accuracy of a 3D printed tooth model according to an embodiment of the present invention.
Fig. 2 is a functional block diagram of a 3D printing molded tooth model precision measurement system according to an embodiment of the present invention.
Fig. 3 is a functional block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, the terms "comprising," "including," "having," "containing," and the like, as used herein, are open-ended terms that mean including, but not limited to. Reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes to illustrate the implementation of the present application, and the sequence of steps is not limited and can be adjusted as needed.
Various non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a method for measuring accuracy of a 3D printed tooth model, wherein the method includes:
s100, scanning a tooth model to be detected to obtain an original 3D geometric model of the tooth model;
specifically, it should be noted that the original 3D geometric model in the embodiment of the present invention includes a geometric model of an STL file, which refers to an STL format drawing file.
Specifically, in some embodiments of the present invention, a 3D printer using SLA (stereo lithography) or DLP (digital light processing) molding technology is used to print out a tooth model to be tested, and the 3D printed tooth model is subjected to two post-processing procedures of ultrasonic cleaning and UV (Ultraviolet) curing; the ultrasonic cleaning process is to remove adhesive blocks or other impurities on the surface of the printed tooth model, the chemical mechanism of UV curing is to generate a fast polymerized free radical reaction under the conditions of a proper photoinitiator or photosensitizer and high-performance ultraviolet lamp light, the practical application shows that the surface of the printed tooth model is free of flowing liquid through the irradiation of an ultraviolet lamp, the surface is dried and hardened, and the standard tooth model to be detected can be obtained through the two post-treatment processes.
Further, a tooth model to be measured is scanned using a laser three-dimensional scanner to obtain an original 3D geometric model of the tooth model, and the original 3D geometric model may be an STL-file geometric model. Three-dimensional scanners collect point clouds (pointclouds) of the geometric surface of an object, which can be interpolated to the surface shape of the object, and the denser the point clouds, the more accurate the model can be created, and the scanning accuracy of dental three-dimensional scanners can reach the micron level.
S200, trimming an edge curved surface of the original 3D geometric model of the tooth model to obtain a trimmed 3D model;
in some embodiments of the present invention, before the step S200, the method further includes:
and importing the original 3D geometric model of the tooth model into Geomagic Studio reverse graphic processing software.
Specifically, in some embodiments of the present invention, in the step S200, specifically, a "polygon" → "repairing" → "clipping with plane clipping" command in the geographic Studio inverse graphic processing software is used to clip the base edge curved surface of the original STL file geometric model of the tooth model to obtain a clipped STL file model.
S300, setting a compared test object and a reference object;
in some embodiments of the present invention, before the step S300, the method further includes:
and importing the trimmed 3D model and the original 3D geometric model into Qualify quality analysis software.
Specifically, in some embodiments of the present invention, in step S300:
the test object is the pruned 3D model and the reference object is the original 3D geometric model. And setting the trimmed STL file model as a test object and setting the original STL file geometric model as a reference object in a 'project manager' tool bar of Qualify quality analysis software.
S400, fitting the test object and the reference object in a 3D mode;
specifically, in some embodiments of the present invention, the trimmed STL file model is first fit-aligned using the original STL file geometric model as a reference by using an "align" → "object align" → "best fit align" command in Qualify quality analysis software; the "gauge head radius" is then set to 0.0mm in the "best fit alignment" dialog box, and the "tolerance" and "sample size" are not modified from the original values.
S500, trimming the gum line edge curved surfaces of the test object and the reference object simultaneously;
in some embodiments of the present invention, before the step S500, the method further includes:
and simultaneously selecting the test object and the reference object and setting a selection mode.
Specifically, the test object and the reference object are simultaneously selected in the Qualify quality analysis software, the selection mode is set to be 'through', then a command of 'select' → 'tool' → 'custom area' in the Qualify quality analysis software is used for fetching points along the gum curve in sequence at a plurality of positions, a red selection area appears after confirmation, and the edge of one side of the area is the gum curve. If the red selected area is positioned at the lower side of the gum curve, namely the gum part, continuing the next step; if the red selection area is on the upper side of the gum curve, namely the crown part, switching the red selection area to the lower side of the gum curve by clicking a 'reverse selection area' command by a right key; delete then deletes the red selection area.
S600, fitting the test object and the reference object in a 3D mode again;
specifically, in some embodiments of the present invention, the trimmed STL file geometric model is fitted and aligned again with the original STL file geometric model as a reference by using an "align" → "object align" → "best fit align" command in Qualify quality analysis software; the parameter settings are consistent with the first fit, i.e. the "gauge head radius" is set to 0.0mm in the "best fit alignment" dialog box, and the "tolerance" and "sample size" are not modified from the original values.
S700, setting a deviation display color spectrum and comparing the 3D deviation of the test object with the reference object;
in some embodiments of the present invention, step S700 is followed by:
and generating a chromatographic graph, wherein the chromatographic graph displays the deviation area and the deviation range of the test object and the reference object.
The generating a color spectrum graph, wherein after the displaying the deviation area and the deviation range of the test object and the reference object on the color spectrum graph, the generating further comprises:
and clicking different color areas on the chromatographic graph and displaying numerical information of the selected points.
Specifically, in some embodiments of the present invention, a chromatography name C is created using the analyze "→" compare "→" edit chromatography "command in Qualify mass analysis software. The parameters are set in the "edit chromatogram" dialog as follows, decimal: 4, color segment: 15, maximum critical value: 0.1mm, maximum nominal value: 0.1mm, minimum nominal value: 0.1mm, minimum critical value: -0.1 mm.
Further, an analysis command → a comparison command → a 3D comparison command in Qualify quality analysis software is applied, the trimmed STL file model is used as a test object, the original STL file geometric model is used as a reference object, all-around three-dimensional space comparison is carried out, chromatographic graphs with different colors indicating different deviation values are obtained on a graph interface after application, and the chromatographic graphs clearly display the deviation areas and deviation ranges of the trimmed STL file model and the original STL file geometric model. The parameters are set in the '3D comparison' dialog box as follows, the color reference is circled before, the color spectrum calls the set deviation to display the name C newly established in the color spectrum, the parameters automatically appear, and the color segment: 15, maximum critical value: 0.1mm, maximum nominal value: 0.1mm, minimum nominal value: 0.1mm, minimum critical value: -0.1mm, decimal place: 4.
further, by using an "analysis" → "comparison" → "creating annotation" command in Qualify mass analysis software, different color regions are clicked on the chromatographic image, a numerical information display box pops up each time the different color regions are clicked, and the numerical information box includes four information values, namely, a point name, an average distance D, X direction deviation distance Dx, a Y direction deviation distance Dy and a Z direction deviation distance Dz. The points are taken from the areas with different colors, the size of the deviation value of the selected area can be visually displayed, and after the points are taken for multiple times, the position arrangement of each numerical value display frame is adjusted, so that the observation and the comparison are convenient. The parameters are set in the "create comments" dialog as follows, "name": self-defining, tolerance is increased: 0.0mm, lower tolerance: 0.0mm, decimal place: 4, deviation radius: 0.1mm, click "apply to all". And clicking to store the view after the data is retrieved, so that the data can be retrieved again conveniently.
And S800, generating a precision report of 3D deviation comparison.
Specifically, in some embodiments of the present invention, a measurement analysis detailed report in PDF, HTML, WORD, or other formats is generated using a "report" → "create report" command in Qualify quality analysis software. The report contains more comprehensive information, and the information of the deviation chromatogram in 6 directions of foresight, back view, left view, right view, overlook and upward view, the average deviation value, the standard deviation value, the deviation percentage value, all the annotation single-point deviation values, the total deviation distribution histogram and the like. By the method, the measurement efficiency of the precision of the 3D printing molded tooth model can be improved, the workload of measuring personnel is reduced, meanwhile, the high measurement precision is guaranteed, and the method is simple, effective and high in practicability.
It should be understood that although the present application provides method operation steps as described in the embodiments or flowcharts, more or less operation steps may be included based on conventional or non-inventive labor, and the operation steps are not necessarily performed in the order of the embodiments or flowcharts. The order of steps recited in the embodiments or flowcharts is but one manner of executing many steps and is not intended to represent the only order of execution. Moreover, at least a portion of the steps in the embodiments or flowcharts may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
Based on the above embodiment, the present invention further provides a system for measuring accuracy of a 3D printed tooth model, as shown in fig. 2, the system includes:
a scanning module 21 for scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
a pruning module 22 for pruning the original 3D geometric model edge surface of the tooth model to obtain a pruned 3D model;
a set object module 23 for setting a test object and a reference object for comparison;
a fitting module 24 for 3D fitting the test object to the reference object;
a simultaneous trimming module 25 for simultaneously trimming the gum line edge curves of the test object and the reference object;
a refitting module 26 for 3D refitting the test object to the reference object again;
a set color spectrum and deviation comparing module 27 for setting a deviation display color spectrum and performing 3D deviation comparison of the test object and the reference object;
a report generation module 28 for generating an accuracy report of the 3D deviation comparison.
In some embodiments of the present invention, the system for measuring accuracy of a 3D printed tooth model, wherein the trimming module 22 for trimming an edge surface of an original 3D geometric model of the tooth model to obtain a trimmed 3D model further includes:
and the guiding Geomagic Studio module is used for guiding the original 3D geometric model of the tooth model into Geomagic Studio reverse graphic processing software.
In some embodiments of the present invention, the system for measuring the accuracy of a 3D printed tooth model, wherein the setting object module 23 is configured to set the comparison test object and the reference object, and further comprises:
and importing a Qualify module for importing the trimmed 3D model and the original 3D geometric model into Qualify quality analysis software.
In some embodiments of the present invention, the 3D printing formed tooth model precision measurement system, wherein the setting object module 23 is configured to set the comparison between the test object and the reference object:
the test object is the pruned 3D model and the reference object is the original 3D geometric model.
In some embodiments of the present invention, the system for measuring the accuracy of a 3D printed tooth model, wherein the module 25 for simultaneously trimming the gum line edge curves of the test object and the reference object further comprises:
and the selection setting module is used for simultaneously selecting the test object and the reference object and setting a selection mode.
In some embodiments of the present invention, the 3D printing formed tooth model precision measuring system, wherein the setting color spectrum and deviation comparing module 27 is configured to set a deviation display color spectrum and compare the 3D deviation of the test object with the reference object, and then comprises:
and the chromatographic graph generating module is used for generating a chromatographic graph, and the deviation area and the deviation range of the test object and the reference object are displayed on the chromatographic graph.
In some embodiments of the present invention, the system for measuring the accuracy of a 3D printed tooth model, wherein the module for generating a color spectrum graph is configured to generate a color spectrum graph, and after displaying a deviation area and a deviation range of the test object and the reference object on the color spectrum graph, the system further includes:
and the point selection module is used for performing point selection in different color areas on the chromatographic graph and displaying numerical value information of the selected points.
Based on the above embodiments, the present invention further provides an electronic device, and a schematic block diagram thereof may be as shown in fig. 3. The electronic device comprises a processor, a memory, a network interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a 3D print-formed tooth model accuracy measurement method. The display screen of the electronic equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the electronic equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the block diagram shown in fig. 3 is only a block diagram of a portion of the structure associated with the inventive arrangements and does not constitute a limitation of the electronic devices to which the inventive arrangements may be applied, and that a particular electronic device may include more or less components than those shown, or combine certain components, or have a different arrangement of components.
In some embodiments of the present invention, there is further provided an electronic device, including a memory, a processor, and a computer program stored on the memory and executable by the processor, where the processor executes the computer program to implement at least the following steps:
scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model;
setting a comparative test object and a reference object;
3D fitting the test object to the reference object;
simultaneously trimming the gum line edge curves of the test object and the reference object;
3D fitting the test object and the reference object again;
setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object;
an accuracy report of the 3D deviation comparison is generated.
In some embodiments, the processor, when executing the computer program, may further implement the steps of:
and importing the original 3D geometric model of the tooth model into Geomagic Studio reverse graphic processing software.
In some embodiments, the processor, when executing the computer program, may further implement the steps of:
and importing the trimmed 3D model and the original 3D geometric model into Qualify quality analysis software.
In some of these embodiments, the processor, when executing the computer program:
the test object is the pruned 3D model and the reference object is the original 3D geometric model.
In some embodiments, the processor, when executing the computer program, may further implement the steps of:
and simultaneously selecting the test object and the reference object and setting a selection mode.
In some embodiments, the processor, when executing the computer program, may further implement the steps of:
and generating a chromatographic graph, wherein the chromatographic graph displays the deviation area and the deviation range of the test object and the reference object.
And clicking different color areas on the chromatographic graph and displaying numerical information of the selected points.
Based on the above embodiments, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps in the method for measuring accuracy of a 3D printed and formed tooth model, as described above.
In summary, the present invention provides a method, a system, a device and a medium for measuring the accuracy of a 3D printed tooth model, according to the method for measuring the accuracy provided by the present invention, a tooth model to be measured is first scanned to obtain an original 3D geometric model of the tooth model; trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model; setting a comparative test object and a reference object; 3D fitting the test object to the reference object; simultaneously trimming the gum line edge curves of the test object and the reference object; 3D fitting the test object and the reference object again; setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object; and finally generating a precision report of the 3D deviation comparison. By the method, the measurement efficiency of the precision of the 3D printing molded tooth model can be improved, the workload of measuring personnel is reduced, meanwhile, the high measurement precision is guaranteed, and the method is simple, effective and high in practicability.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method for measuring the accuracy of a tooth model formed by 3D printing is characterized by comprising the following steps:
scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
trimming an original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model;
setting a comparative test object and a reference object;
3D fitting the test object to the reference object;
simultaneously trimming the gum line edge curves of the test object and the reference object;
3D fitting the test object and the reference object again;
setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object;
an accuracy report of the 3D deviation comparison is generated.
2. The method for measuring the accuracy of a 3D printed and formed tooth model according to claim 1, wherein the trimming the original 3D geometric model edge surface of the tooth model to obtain a trimmed 3D model further comprises:
and importing the original 3D geometric model of the tooth model into Geomagic Studio reverse graphic processing software.
3. The method for measuring the accuracy of a 3D printed and formed tooth model according to claim 1 or 2, wherein the step of setting the comparative test object and the reference object further comprises the following steps:
and importing the trimmed 3D model and the original 3D geometric model into Qualify quality analysis software.
4. The method for measuring the accuracy of a 3D printed and formed tooth model according to claim 3, wherein the set comparison test object and the reference object are:
the test object is the pruned 3D model and the reference object is the original 3D geometric model.
5. The method of claim 4, wherein the simultaneously trimming the gum line edge curves of the test object and the reference object further comprises:
and simultaneously selecting the test object and the reference object and setting a selection mode.
6. The method for measuring the accuracy of a 3D printed and formed tooth model according to claim 5, wherein the step of setting a deviation display color spectrum and comparing the 3D deviation of the test object with the reference object comprises:
and generating a chromatographic graph, wherein the chromatographic graph displays the deviation area and the deviation range of the test object and the reference object.
7. The method for measuring the accuracy of a 3D printed and formed tooth model according to claim 6, wherein the generating a color spectrum graph, the color spectrum graph further comprising the following steps after displaying the deviation area and the deviation range of the test object and the reference object:
and clicking different color areas on the chromatographic graph and displaying numerical information of the selected points.
8. A 3D print molded dental model precision measurement system, the system comprising:
a scanning module for scanning a tooth model to be measured to obtain an original 3D geometric model of the tooth model;
a pruning module for pruning an original 3D geometric model edge surface of the tooth model to obtain a pruned 3D model;
the setting object module is used for setting a compared test object and a reference object;
a fitting module for 3D fitting the test object to the reference object;
a simultaneous trimming module for simultaneously trimming the gum line edge curves of the test object and the reference object;
a refitting module for 3D refitting the test object and the reference object again;
a set color spectrum and deviation comparison module for setting a deviation display color spectrum and performing 3D deviation comparison on the test object and the reference object;
and the report generation module is used for generating a precision report of the 3D deviation comparison.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable by the processor, the processor implementing the steps in the method for measuring the accuracy of a 3D printed molded tooth model according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the steps in the 3D print-formed tooth model accuracy measurement method of any one of claims 1 to 7.
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Effective date of registration: 20210416 Address after: 1606, Guoxin Investment Building, 07 Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Applicant after: SHENZHEN TOOLINK TECHNOLOGY Co.,Ltd. Address before: Floor 3, building D, maxitang fuxinlin Industrial Park, Gushu community, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Meiming Dental Technology Co.,Ltd. |