WO2024188024A1 - Procédé et appareil de détermination de couleur de dent, et dispositif et support - Google Patents

Procédé et appareil de détermination de couleur de dent, et dispositif et support Download PDF

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Publication number
WO2024188024A1
WO2024188024A1 PCT/CN2024/077939 CN2024077939W WO2024188024A1 WO 2024188024 A1 WO2024188024 A1 WO 2024188024A1 CN 2024077939 W CN2024077939 W CN 2024077939W WO 2024188024 A1 WO2024188024 A1 WO 2024188024A1
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WIPO (PCT)
Prior art keywords
tooth
dimensional
original
image
teeth
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PCT/CN2024/077939
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English (en)
Chinese (zh)
Inventor
马超
赵晓波
陈晓军
章惠全
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Shining 3D Technology Co Ltd
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Shining 3D Technology Co Ltd
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Publication of WO2024188024A1 publication Critical patent/WO2024188024A1/fr
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0012—Biomedical image inspection
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image
    • G06T2207/10012—Stereo images
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30036—Dental; Teeth

Definitions

  • the present disclosure relates to the field of three-dimensional digitization, and in particular to a method, device, equipment and medium for determining tooth color.
  • the color of teeth is determined by using a color comparison card.
  • the color comparison card is placed next to the teeth in the mouth, and the doctor uses his experience to compare and judge the color numbers one by one with the naked eye to determine the color information of the teeth.
  • the present disclosure provides a method, device, equipment and medium for determining tooth color.
  • An embodiment of the present disclosure provides a method for determining tooth color, the method comprising the following steps: photographing a target oral cavity by means of a preset image acquisition device to obtain an original tooth image, and scanning the target oral cavity by means of a preset three-dimensional data scanning device to obtain three-dimensional tooth data, wherein an image resolution of the original tooth image is greater than a preset resolution threshold, and a data color error of the three-dimensional tooth data is less than a preset error threshold; displaying the three-dimensional tooth data on a first display interface, and determining a trigger tooth area corresponding to the trigger operation in response to a trigger operation on the three-dimensional tooth data; and determining a first original tooth color parameter corresponding to the trigger tooth area in the original tooth image.
  • the present disclosure also provides a device for determining tooth color, the device comprising: A shooting module, used to shoot a target oral cavity through a preset image acquisition device to obtain an original tooth image, wherein the image resolution of the original tooth image is greater than a preset resolution threshold; a scanning module, used to scan the target oral cavity through a preset three-dimensional data scanning device to obtain tooth three-dimensional data, wherein the data color error of the tooth three-dimensional data is less than a preset error threshold; a display module, used to display the tooth three-dimensional data on a first display interface; a first determination module, used to determine a trigger tooth area corresponding to the trigger operation on the tooth three-dimensional data in response to the trigger operation; a second determination module, used to determine a first original tooth color parameter corresponding to the trigger tooth area in the original tooth image.
  • An embodiment of the present disclosure also provides an electronic device, which includes: a processor; a memory for storing executable instructions of the processor; the processor is used to read the executable instructions from the memory and execute the instructions to implement the method for determining tooth color as provided in the embodiment of the present disclosure.
  • the embodiment of the present disclosure also provides a computer-readable storage medium, which stores a computer program, and the computer program is used to execute the method for determining tooth color provided by the embodiment of the present disclosure.
  • the tooth color determination scheme is to photograph the target oral cavity through a preset image acquisition device to obtain an original tooth image, and to scan the target oral cavity through a preset three-dimensional data scanning device to obtain three-dimensional tooth data, wherein the image resolution of the original tooth image is greater than a preset resolution threshold, and the data color error of the three-dimensional tooth data is less than a preset error threshold, and then, the three-dimensional tooth data is displayed on the first display interface, and in response to a trigger operation on the three-dimensional tooth data, a trigger tooth area corresponding to the trigger operation is determined, and the first original tooth color parameter corresponding to the trigger tooth area is determined in the original tooth image.
  • the accuracy of the extracted tooth color parameters is improved, which helps to improve the accuracy of tooth treatment such as tooth preparation based on tooth color parameters.
  • FIG1 is a schematic flow chart of a method for determining tooth color provided by an embodiment of the present disclosure
  • FIG2 is a schematic diagram of a tooth color determination scenario provided by an embodiment of the present disclosure.
  • FIG3 is a flow chart of another method for determining tooth color provided by an embodiment of the present disclosure.
  • FIG4 is a schematic diagram of another tooth color determination scenario provided by an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of the structure of a device for determining tooth color provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a method for determining tooth color.
  • FIG1 is a flow chart of a method for determining tooth color provided by an embodiment of the present disclosure, the method can be executed by a device for determining tooth color, wherein the device can be implemented by software and/or hardware, and can generally be integrated in an electronic device. As shown in FIG1 , the method includes:
  • Step 101 photographing the target oral cavity by a preset image acquisition device to obtain an original tooth image, and scanning the target oral cavity by a preset three-dimensional data scanning device to obtain three-dimensional tooth data, wherein the image resolution of the original tooth image is greater than a preset resolution threshold, and the data color error of the three-dimensional tooth data is less than a preset error threshold.
  • different advantageous devices are used to respectively acquire the original tooth image and the tooth three-dimensional data, so as to avoid the problem of error accumulation caused by a single device synchronously acquiring the original tooth image and the tooth three-dimensional data (for example, although the intraoral scanner can synchronously acquire tooth three-dimensional data and tooth two-dimensional images, the intraoral scanner usually has low resolution performance, resulting in low resolution of the acquired tooth two-dimensional images, etc.).
  • the preset three-dimensional data scanning equipment can be a high-precision intraoral scanner, etc., where the intraoral scanner uses an invasive optical scanning head to directly scan the patient's oral cavity, and uses the structured light triangulation imaging principle to project active light patterns to the teeth, gums, mucosa, etc. in the oral cavity using a digital projection system. After the camera acquisition system obtains the pattern, it performs three-dimensional reconstruction and splicing through algorithm processing to obtain the tooth three-dimensional data.
  • the target mouth is also filled with light according to the preset color temperature, wherein the uniformity of the light source at each position of the target mouth after fill-in light is greater than the preset uniformity threshold, i.e., ensuring that the fill-in light at each position of the target mouth is relatively uniform.
  • Step 102 display the three-dimensional tooth data on the first display interface, and in response to a trigger operation on the three-dimensional tooth data, determine a trigger tooth area corresponding to the trigger operation.
  • the three-dimensional data of the teeth in order to facilitate the user to select teeth as needed, can also be displayed on the first display interface, and in response to the triggering operation on the three-dimensional data of the teeth, the triggering tooth area corresponding to the triggering operation is determined.
  • the user can implement the above triggering operation through a finger or a device such as a stylus pen.
  • Step 103 determining a first original tooth color parameter corresponding to the triggering tooth area in the original tooth image.
  • a first original tooth color parameter corresponding to a triggered tooth area is determined in the original tooth image, wherein the first original tooth color parameter includes but is not limited to hue, chroma, brightness, etc. of the tooth (for example, RGB color information can be determined in the original tooth image, and the first original tooth color parameter can be extracted based on the RGB color information, etc.).
  • the first original tooth color parameter includes but is not limited to hue, chroma, brightness, etc. of the tooth (for example, RGB color information can be determined in the original tooth image, and the first original tooth color parameter can be extracted based on the RGB color information, etc.).
  • the first original tooth color parameter can also be synchronously displayed on the first display interface, and the selected The selected trigger tooth area is selected for prompting, and the selection prompt can be displayed in the form of highlighting or guide lines.
  • the original tooth image and tooth three-dimensional data of the target mouth are displayed on the first display interface.
  • a trigger tooth area A corresponding to the trigger operation is determined, and the first original tooth color parameter of A is obtained as a according to the original tooth image.
  • the first original tooth color parameter a is directly displayed on the first display interface.
  • the coordinate transformation relationship is used to achieve the mapping between the original tooth image and the tooth three-dimensional data. It should be noted that in different application scenarios, the method of determining the coordinate transformation relationship is different, and the examples are as follows:
  • multiple reference pixel points in the original tooth image are obtained, and multiple reference three-dimensional points that match the multiple reference pixel points are determined in the tooth three-dimensional data, wherein the reference pixel point and the corresponding reference three-dimensional point belong to the same point on the tooth, and the matching method of the multiple reference pixel points and the reference three-dimensional point can be implemented according to a feature matching algorithm, etc.
  • the two-dimensional coordinates of each reference pixel point and the three-dimensional coordinates of the corresponding reference three-dimensional point are obtained, and the coordinate transformation relationship is determined according to the two-dimensional coordinates and the three-dimensional coordinates. Based on the coordinate transformation relationship, the three-dimensional coordinate position of the two-dimensional pixel point in the original tooth image in the three-dimensional tooth data can be determined.
  • the intrinsic parameters and extrinsic parameters of the camera used to take the original tooth image may also be obtained, and the coordinate transformation relationship may be determined based on the intrinsic parameters and extrinsic parameters of the camera and the triangle theorem.
  • scale invariant feature transformation matching algorithm Scale Invariant Feature Transform, SIFT
  • local feature point detection algorithm Scaled Up Robust Feature, SURF
  • image feature description algorithm Boary Robust Invariant Scalable Keypoints, BRISK
  • the first original tooth color parameter obtained above can satisfy the requirements of the relevant scene.
  • the processing requirements of teeth for example, in one embodiment of the present disclosure, in order to facilitate the manufacture of restorations according to tooth color numbers, etc., a convenient reading of tooth color numbers can also be achieved according to the first original tooth color parameters obtained above.
  • the tooth color number can be understood as information describing the color of the teeth that is set in advance according to relevant standards. Each tooth color number is determined according to its corresponding tooth color parameters. Different tooth color numbers correspond to different tooth color parameters.
  • a tooth color comparison card is set according to relevant standards, such as a 24-step tooth color comparison card, etc.
  • the tooth color comparison card contains multiple tooth color numbers.
  • the tooth color number is determined according to the standard tooth color parameters corresponding to each tooth color number in the tooth color comparison card and the matching result of the first original tooth parameters.
  • the first original color number viewing operation that triggers the tooth area is obtained.
  • the viewing operation can be performed by voice or by triggering the relevant color number viewing control.
  • the teeth may be sorted in advance according to a preset sorting rule, for example, the teeth may be sorted from top to bottom and from left to right to determine the tooth order of the triggered tooth area, and a first original tooth color parameter corresponding to the tooth order may be determined in the original tooth image. Further, the first original tooth color number of the triggered tooth area may be determined according to the first original tooth color parameter. For example, the first original tooth color parameter may be input into a pre-trained tooth color number recognition model to obtain the first original tooth color number of the triggered tooth area, or the first original tooth color number may be recognized by a preset recognition algorithm, etc.
  • a preset sorting rule for example, the teeth may be sorted from top to bottom and from left to right to determine the tooth order of the triggered tooth area, and a first original tooth color parameter corresponding to the tooth order may be determined in the original tooth image. Further, the first original tooth color number of the triggered tooth area may be determined according to the first original tooth color parameter. For example, the first original tooth color parameter may
  • This digital method of obtaining tooth color numbers reduces the problem of color mismatch after restoration tooth processing caused by dentists relying on experience and visual errors to determine tooth color numbers. Furthermore, the first original tooth color number is displayed on the first display interface. Thus, without the need to construct a tooth model based on the original tooth image and tooth three-dimensional data, it is convenient for users to obtain the original tooth color number in real time, thereby providing convenience for scene requirements based on the original tooth color number.
  • the second original tooth color number of A is obtained as b according to the first original tooth color parameter, and the first original tooth color parameter A and the first original tooth color number b are displayed on the first display interface, so that when the operator clicks on a certain position of the tooth three-dimensional data, the software automatically picks up the corresponding point on the original tooth image and gives the corresponding hue, chroma, brightness and other first original tooth color parameters, so that the operator can obtain the first original tooth color number of the tooth position in real time as a reference for subsequent tooth treatment.
  • the method for determining tooth color of the embodiment of the present disclosure uses a preset image acquisition device to photograph the target oral cavity to obtain an original tooth image, and uses a preset three-dimensional data scanning device to scan the target oral cavity to obtain three-dimensional tooth data, wherein the image resolution of the original tooth image is greater than a preset resolution threshold, and the data color error of the three-dimensional tooth data is less than a preset error threshold, and then, the three-dimensional tooth data is displayed on the first display interface, and in response to a triggering operation on the three-dimensional tooth data, a triggering tooth area corresponding to the triggering operation is determined, and the first original tooth color parameter corresponding to the triggering tooth area is determined in the original tooth image.
  • the accuracy of the extracted tooth color parameters is improved, which helps to improve the accuracy of tooth treatment such as tooth preparation based on tooth color parameters.
  • a three-dimensional model of teeth beautification can also be constructed in the form of a three-dimensional model, so that users can understand the teeth beautification effect from multiple angles, and the intuitiveness of the display of teeth beautification effect is improved.
  • the beautification treatment includes but is not limited to whitening treatment, brightening treatment, etc.
  • the method further includes:
  • Step 301 in response to an acquisition operation of acquiring a beautified teeth three-dimensional model, beautify the original teeth image to acquire a beautified teeth image.
  • the user's acquisition operation on the teeth beautification three-dimensional model is obtained.
  • the user's voice operation information can be obtained.
  • the voice operation information contains the keyword "beautification effect”
  • it is considered that the acquisition operation on the teeth beautification three-dimensional model is obtained.
  • a display control of the teeth beautification three-dimensional model can be displayed on a visual operation interface.
  • the user's trigger operation of the display control is detected, it is considered that the display operation on the teeth beautification three-dimensional model is obtained.
  • the original teeth image is beautified to obtain the beautified teeth image after the beautification processing.
  • the beautification processing is whitening processing
  • the original teeth picture can be whitened to obtain a whitened teeth picture after the whitening processing, wherein the teeth color of the whitened teeth picture after the whitening processing is whiter than that of the original teeth picture.
  • Step 302 Map the beautified teeth image to the three-dimensional teeth data to obtain a beautified teeth three-dimensional model.
  • the beautified tooth image can be mapped to the tooth three-dimensional data to obtain the tooth beautification three-dimensional model.
  • the beautified tooth image can be mapped to the tooth three-dimensional data to obtain the tooth beautification three-dimensional model.
  • the coordinate transformation relationship between the original tooth picture and the tooth three-dimensional data is predetermined, and the beautified tooth picture is mapped to the tooth three-dimensional data to obtain a tooth beautification three-dimensional model. Since the beautified tooth picture is obtained by beautification processing based on the original tooth picture, the coordinate transformation relationship between the original tooth picture and the tooth three-dimensional data can be regarded as the coordinate transformation relationship between the beautified tooth picture and the tooth three-dimensional data.
  • a texture matching algorithm (such as SIFT, SURF, BRISK, FREAK, ORB, etc.) may be used to map the three-dimensional tooth data of the teeth and the beautified tooth image based on texture features to obtain a beautified tooth three-dimensional model.
  • the beautification process is used as whitening process for explanation.
  • the original tooth image is beautified to obtain the beautified tooth image, including: extracting the second original tooth color parameter of each tooth in the original tooth image, and determining the second original tooth color number of each tooth according to the second original tooth color parameter, wherein the second original tooth color parameter includes but is not limited to the hue, chroma, brightness, etc. of the tooth (for example, RGB color information can be determined in the original tooth image, and the second original tooth color parameter can be extracted according to the RGB color information, etc.).
  • standard tooth color number corresponding to each tooth is obtained, and standard tooth parameters corresponding to the standard tooth color number are determined.
  • the standard tooth color number can be understood as an ideal whitening tooth color number, and standard tooth parameters corresponding to the standard tooth color number are determined.
  • the standard tooth parameters correspond to the first original tooth color parameters, including but not limited to the hue, chroma, and brightness of the teeth.
  • teeth whose standard tooth color number is inconsistent with the corresponding first original tooth color number are determined as teeth to be whitened, that is, whitening treatment is not performed on every tooth, but only teeth whose standard tooth color number is inconsistent with the second original tooth color number are determined as teeth to be whitened, thereby avoiding the problem of "false white” caused by excessive tooth whitening.
  • the method of determining the standard tooth color number corresponding to each tooth is different.
  • the original tooth picture is mapped to the tooth three-dimensional data to obtain the original tooth three-dimensional model, and the original tooth three-dimensional model is displayed on a preset second display interface.
  • the preset second display interface can be a user interaction interface provided by the software, and the whitening tooth three-dimensional model is displayed on the preset second display interface, so that the user can intuitively view the whitening teeth in a three-dimensional form. The effect after whitening.
  • a plurality of preset candidate tooth color number images are displayed on the second display interface, wherein the plurality of preset subsequent first tooth color number images can visually and intuitively display the visual effect of each tooth color number, and further, in response to obtaining a determination operation on a target tooth color number among a plurality of preset candidate tooth color number images, the target tooth color number is determined to be a standard tooth color number, thereby realizing a user's personalized definition of the tooth whitening effect and meeting personalized tooth whitening needs.
  • the skin color information corresponding to the target mouth is obtained, and the standard tooth color number of the second tooth is determined according to the skin color information. That is, the standard tooth color number can be determined according to the skin color information.
  • a preset database can be queried to determine the standard tooth color number of the second tooth corresponding to the skin color information, further ensuring the natural feeling of tooth whitening.
  • the standard tooth color numbers of all teeth may be directly determined based on the user's skin color information, thereby improving the efficiency of teeth whitening.
  • the teeth to be whitened are whitened according to standard tooth parameters to obtain a whitened teeth picture after the whitening process, so that the relevant teeth in the whitened teeth picture meet the user's demand for teeth whitening and improve the teeth whitening effect.
  • a 3D model of the original teeth before whitening may be constructed, and the 3D model of the original teeth and the 3D model of the whitened teeth may be compared and displayed.
  • a comparison operation of the whitening effect is obtained, wherein the comparison operation can be implemented by triggering a preset whitening comparison control, etc.
  • the original tooth image is mapped to the tooth three-dimensional data according to the coordinate transformation relationship to obtain the original tooth three-dimensional model. Since the original tooth three-dimensional model is obtained by mapping the original tooth image without whitening processing, the original tooth three-dimensional model can be regarded as a model of the teeth before whitening.
  • the original tooth model is also displayed on the second display interface.
  • the whitened teeth 3D model is also displayed on the second display interface, thereby facilitating the comparison of teeth whitening effects.
  • the figure only shows the original teeth 3D model and the whitened teeth 3D model distributed left and right.
  • the original teeth 3D model and the whitened teeth 3D model can be placed up and down.
  • the device can be distributed in any direction without any restriction.
  • an adjustment instruction for the display angle of the teeth beautification three-dimensional model can also be obtained.
  • the adjustment instruction can be input by voice, or it can be realized by triggering the angle adjustment control of the prepared teeth three-dimensional model preset on the second display interface, or it can be realized by dragging the teeth beautification three-dimensional model displayed on the second display interface to adjust the angle, etc.
  • the adjusted target display angle is determined, and then the teeth beautification three-dimensional model and the original teeth three-dimensional model are displayed according to the target display angle.
  • the intuitiveness of the user's viewing of the teeth beautification effect is further improved, and the user can understand the teeth beautification effect from multiple angles, and at the same time adjust the display angle of the whole teeth beautification three-dimensional model and the original teeth three-dimensional model, which improves the intuitiveness of the comparison of the teeth beautification effect.
  • the method for determining tooth color of the embodiment of the present disclosure performs beautification processing on the original tooth image to obtain a beautified tooth image after beautification processing, and then determines the coordinate transformation relationship between the pixel points in the beautified tooth image and the three-dimensional points in the tooth three-dimensional data, maps the beautified tooth image to the tooth three-dimensional data according to the coordinate transformation relationship to obtain a beautified tooth three-dimensional model, and displays the beautified tooth three-dimensional model on a preset first display interface.
  • a beautified tooth three-dimensional model after beautification processing is constructed, which is convenient for intuitively displaying the beautification effect of each angle of the teeth after beautification processing.
  • the present disclosure also proposes a device for determining tooth color.
  • FIG5 is a schematic diagram of a structure of a tooth color determination device provided by an embodiment of the present disclosure.
  • the device can be implemented by software and/or hardware and can generally be integrated into an electronic device.
  • the device includes: a shooting module 510, a scanning module 520, a display module 530, a first determination module 540 and a second determination module 550, wherein:
  • a photographing module 510 is used to photograph a target oral cavity through a preset image acquisition device to obtain an original tooth image, wherein the image resolution of the original tooth image is greater than a preset resolution threshold;
  • a scanning module 520 is used to scan a target oral cavity through a preset three-dimensional data scanning device to obtain three-dimensional data of teeth, wherein a data color error of the three-dimensional data of teeth is less than a preset error threshold;
  • Display module 530 used to display the three-dimensional tooth data on the first display interface
  • the first determination module 540 is used to determine, in response to a trigger operation on the tooth three-dimensional data, The trigger tooth area corresponding to the trigger operation;
  • the second determination module 550 is used to determine the first original tooth color parameter corresponding to the triggering tooth area in the original tooth image.
  • the tooth color determination device provided in the embodiments of the present disclosure can execute the tooth color determination method provided in any embodiment of the present disclosure, and has the corresponding functional modules and beneficial effects of the execution method, which will not be repeated here.
  • the present disclosure further proposes a computer program product, including a computer program/instruction, which implements the method for determining tooth color in the above embodiments when executed by a processor.
  • FIG. 6 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure.
  • the electronic device 600 in the embodiment of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc.
  • mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc.
  • PDAs personal digital assistants
  • PADs tablet computers
  • PMPs portable multimedia players
  • vehicle-mounted terminals such as vehicle-mounted navigation terminals
  • fixed terminals such as digital TVs, desktop computers, etc.
  • the electronic device shown in FIG6 is only an example and should not bring any limitation to the functions and scope of use
  • the electronic device 600 may include a processor (e.g., a central processing unit, a graphics processing unit, etc.) 601, which may perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a memory 608 to a random access memory (RAM) 603. Various programs and data required for the operation of the electronic device 600 are also stored in the RAM 603.
  • the processor 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604.
  • An input/output (I/O) interface 605 is also connected to the bus 604.
  • the following devices may be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; output devices 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 608 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 609.
  • the communication device 609 may allow the electronic device 600 to communicate wirelessly or wired with other devices to exchange data.
  • FIG. 6 shows an electronic device 600 with various devices, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have alternatively.
  • an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart.
  • the computer program can be downloaded and installed from the network through the communication device 609, or installed from the memory 608, or installed from the ROM 602.
  • the processor 601 executes the above-mentioned functions defined in the method for obtaining the tooth preparation model of the embodiment of the present disclosure.
  • the computer-readable medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two.
  • the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above.
  • Computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.
  • a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device.
  • a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried.
  • This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above.
  • the computer readable signal medium may also be any computer readable medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device.
  • the program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.
  • the client and server may communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and may be interconnected with any form or medium of digital data communication (e.g., a communication network).
  • HTTP HyperText Transfer Protocol
  • Examples of communication networks include local area networks ("LANs”), wide area networks ("WANs”), and the like. (“WAN”), an internetwork (eg, the Internet), and a peer-to-peer network (eg, an ad hoc peer-to-peer network), as well as any network currently known or developed in the future.
  • the computer-readable medium may be included in the electronic device, or may exist independently without being installed in the electronic device.
  • the computer-readable medium carries one or more programs.
  • the electronic device When the one or more programs are executed by the electronic device, the electronic device:
  • the target oral cavity is photographed by a preset image acquisition device to obtain an original tooth image, and the target oral cavity is scanned by a preset three-dimensional data scanning device to obtain three-dimensional tooth data, wherein the image resolution of the original tooth image is greater than the preset resolution threshold, and the data color error of the three-dimensional tooth data is less than the preset error threshold, and then the three-dimensional tooth data is displayed on the first display interface, and in response to a triggering operation on the three-dimensional tooth data, a triggering tooth area corresponding to the triggering operation is determined, and the first original tooth color parameter corresponding to the triggering tooth area is determined in the original tooth image.
  • the accuracy of the extracted tooth color parameters is improved, which helps to improve the accuracy of tooth treatment such as tooth preparation based on tooth color parameters.
  • the electronic device may be written in one or more programming languages or a combination thereof to write computer program code for performing the operations of the present disclosure, including but not limited to object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages.
  • the program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server.
  • the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).
  • LAN local area network
  • WAN wide area network
  • Internet service provider e.g., via the Internet using an Internet service provider
  • each box in the flowchart or block diagram may represent a module, a program segment, or a portion of a code, which contains one or more executable instructions for implementing a specified logical function.
  • the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession may actually be executed substantially in parallel, and they may sometimes be executed in parallel. It may also be performed in the reverse order, depending on the functions involved.
  • each block in the block diagram and/or flow chart, and combinations of blocks in the block diagram and/or flow chart may be implemented by a dedicated hardware-based system that performs the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.
  • the units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, constitute a limitation on the unit itself.
  • exemplary types of hardware logic components include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chip (SOCs), complex programmable logic devices (CPLDs), and the like.
  • FPGAs field programmable gate arrays
  • ASICs application specific integrated circuits
  • ASSPs application specific standard products
  • SOCs systems on chip
  • CPLDs complex programmable logic devices
  • a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment.
  • a machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium.
  • a machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing.
  • a more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or flash memory erasable programmable read-only memory
  • CD-ROM portable compact disk read-only memory
  • CD-ROM compact disk read-only memory
  • magnetic storage device or any suitable combination of the foregoing.
  • the tooth color determination method provided by the present disclosure can improve the accuracy of extracted tooth color parameters and has strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Quality & Reliability (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un procédé et un appareil pour déterminer une couleur de dent, et un dispositif et un support. Le procédé consiste à : photographier une cavité buccale cible au moyen d'un dispositif de collecte d'image prédéfini, de façon à acquérir une image de dent d'origine, et balayer la cavité buccale cible au moyen d'un dispositif de balayage de données tridimensionnelles prédéfini, de façon à acquérir des données de dent tridimensionnelles, une résolution d'image de l'image de dent d'origine étant supérieure à une valeur seuil de résolution prédéfinie, et une erreur de couleur de données des données de dent tridimensionnelles étant inférieure à une valeur seuil d'erreur prédéfinie (101) ; afficher les données de dent tridimensionnelles sur une première interface d'affichage, et en réponse à une opération de déclenchement pour les données de dent tridimensionnelles, déterminer une zone de dent déclenchée correspondant à l'opération de déclenchement (102) ; déterminer, à partir de l'image de dent d'origine, un premier paramètre de couleur de dent d'origine correspondant à la zone de dent déclenchée (103).
PCT/CN2024/077939 2023-03-10 2024-02-21 Procédé et appareil de détermination de couleur de dent, et dispositif et support Ceased WO2024188024A1 (fr)

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CN202310234360.7 2023-03-10
CN202310234360.7A CN118674669A (zh) 2023-03-10 2023-03-10 牙齿颜色的确定方法、装置、设备及介质

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Cited By (1)

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CN119887953A (zh) * 2025-03-28 2025-04-25 先临三维科技股份有限公司 确定牙齿颜色的方法、装置及设备

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US6328567B1 (en) * 1999-01-21 2001-12-11 Dentech, Llc Method, apparatus and system for automated tooth shade analysis and matching
US20080057478A1 (en) * 2006-08-30 2008-03-06 Anatomage Inc. Patient-specific three-dimensional dentition model
WO2020218560A1 (fr) * 2019-04-26 2020-10-29 株式会社カイ Dispositif d'analyse de position de dent, procédé de génération de modèle d'extraction de région de dent, procédé d'analyse de position de dent, programme, et support d'enregistrement
US20220110729A1 (en) * 2019-03-10 2022-04-14 Carestream Dental Llc Dental shade matching for multiple anatomical regions
CN115482399A (zh) * 2022-08-29 2022-12-16 东莞市力博得电子科技有限公司 基于图像处理的牙齿颜色识别方法、装置及处理设备
WO2023003192A1 (fr) * 2021-07-21 2023-01-26 주식회사 메디트 Appareil de traitement d'image et procédé de traitement d'image

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6328567B1 (en) * 1999-01-21 2001-12-11 Dentech, Llc Method, apparatus and system for automated tooth shade analysis and matching
US20080057478A1 (en) * 2006-08-30 2008-03-06 Anatomage Inc. Patient-specific three-dimensional dentition model
US20220110729A1 (en) * 2019-03-10 2022-04-14 Carestream Dental Llc Dental shade matching for multiple anatomical regions
WO2020218560A1 (fr) * 2019-04-26 2020-10-29 株式会社カイ Dispositif d'analyse de position de dent, procédé de génération de modèle d'extraction de région de dent, procédé d'analyse de position de dent, programme, et support d'enregistrement
WO2023003192A1 (fr) * 2021-07-21 2023-01-26 주식회사 메디트 Appareil de traitement d'image et procédé de traitement d'image
CN115482399A (zh) * 2022-08-29 2022-12-16 东莞市力博得电子科技有限公司 基于图像处理的牙齿颜色识别方法、装置及处理设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119887953A (zh) * 2025-03-28 2025-04-25 先临三维科技股份有限公司 确定牙齿颜色的方法、装置及设备

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