114 results about "Dental region" patented technology

The invention provides a digital human image generation method, device and equipment and a readable storage medium, and the method comprises the steps: generating a plurality of frames of intermediate images matched with driving voice data through model driving, and combining a pre-trained tooth generation network with the first K frames of correction images for completing tooth reconstruction of the intermediate images, according to the invention, tooth reconstruction is carried out on the current frame of intermediate image, the tooth area on the intermediate image is masked, and the corrected image corresponding to the intermediate image is fused with the intermediate image according to the masked image, so that the consistency matching of the facial expression on the intermediate image and the lip mouth shape with the driving voice data is ensured, and the user experience is improved. According to the method, the optimization of the tooth area on the intermediate image is realized, so that the teeth of the digital human are more clear and vivid visually and present a natural and reasonable arrangement state, and the overall sense of reality of the digital human is improved.

The invention provides a desktop digital human interactive studio method based on JavaFX, and the method comprises the steps: scanning the face of a real person through a depth camera, obtaining the three-dimensional shape data of a facial tissue, carrying out the subdivision and marking of the data through the combination of medical anatomical knowledge, and building a digital human face model which comprises the geometric shapes and texture features of lip, tongue and tooth facial tissue structures; establishing a tooth visibility control rule according to the mapping relation between the tongue position and the phoneme in the playing process, and dynamically adjusting the tooth visibility of the digital person in the playing process according to the tooth visibility parameter of the phoneme sequence, so that the tooth visibility change is matched with the characteristics of the real person in the playing process; and tracking the shape and texture features of the lip, tongue and tooth areas of the digital person in the playing process in real time, comparing the shape and texture features with target playing lip shape, tongue position and tooth visibility parameters, dynamically adjusting the parameters of the digital person face model, and performing cooperative control of lip, tongue and teeth in the playing process.

The invention provides a method and device for displaying oral data, computing equipment and a program product. The method comprises the steps that first oral cavity data are obtained, the first oral cavity data comprise three-dimensional data of a dental arch, and the dental arch comprises teeth to be repaired; acquiring second oral cavity data through the intraoral scanner, wherein the second oral cavity data comprises scanning data of the to-be-repaired teeth subjected to tooth preparation processing; identifying tooth regions in the first oral data and the second oral data, and identifying a tooth position of the tooth to be repaired based on a difference between the tooth regions in the first oral data and the second oral data; combining the first oral cavity data and the second oral cavity data based on the identified tooth position of the tooth to be repaired to obtain updated three-dimensional data of the dental arch; and displaying the updated three-dimensional data of the dental arch. In this way, an automated workflow is provided for efficiently generating an oral cavity model containing both a complete dental arch form and a precise tooth preparation form without the need to manually mark a tooth preparation region, thereby improving the accuracy and convenience of oral cavity scanning.

The invention relates to an image processing method which comprises the following steps: acquiring a visible light image, a near-infrared image and a fluorescence image of the same tooth area to obtain a multi-modal image; inputting the multi-modal image into a segmentation network, embedding a space attention module into a jump connection between an encoder and a decoder of the segmentation network, and outputting a binary mask of a tooth area by the segmentation network; extracting contours of a single tooth from the binary mask, and determining a minimum enclosing rectangle and a geometric center of gravity of each contour; distributing FDI tooth position codes for each contour according to the horizontal coordinates of the geometric center of gravity; according to the minimum enclosing rectangle, cutting out a corresponding single tooth image block from the multi-modal image; inputting the single tooth image block into a multi-branch convolutional neural network to obtain a unified feature vector; and inputting the unified feature vector into a full-connection classification network, and outputting probability values corresponding to different categories by the full-connection classification network. The invention also relates to an image processing device, a medium and a computer program product, and a tooth recognition system.

The invention relates to a tooth health primary screening method and device based on image recognition, equipment and a medium. The method comprises the following steps: based on acquired tooth multi-source image data, carrying out image preprocessing on the tooth multi-source image data to obtain preprocessed tooth image data; extracting multi-scale tooth features from the preprocessed tooth image data to obtain tooth feature map data; performing multi-feature fusion processing on the tooth feature map data to obtain fused tooth feature data; on the basis of the fused tooth feature data, combining a preset tooth anatomical structure template, performing feature region division and mapping to obtain tooth region feature data; performing health condition analysis on the tooth region feature data to obtain tooth health condition data; and generating a tooth health screening result according to the tooth health condition data. By adopting the method, multi-modal information can be fully mined, and the comprehensiveness and accuracy of preliminary screening are improved.

The embodiment of the invention discloses a dental plaque data processing method and device, computer equipment and a storage medium. The method comprises the steps that a target oral cavity is scanned through a target scanning scheme, a target oral cavity image is obtained, the target oral cavity image is a first oral cavity image or a second oral cavity image, the first oral cavity image is an oral cavity image in which miscellaneous data is removed and a dental plaque staining area is reserved, and the second oral cavity image is a second oral cavity image; the second oral cavity image comprises a first sub-oral cavity image obtained before dyeing and a second sub-oral cavity image obtained after dyeing; a target oral cavity three-dimensional model is constructed according to the target oral cavity image, the target oral cavity three-dimensional model comprises a tooth area and a gingival area, and the tooth area comprises a dental plaque dyeing area and an undyed area. By implementing the method provided by the embodiment of the invention, the construction of the oral cavity three-dimensional model in the oral cavity dental plaque scanning scene can be realized, and the construction efficiency is improved.

The invention relates to a dental plaque detection method and system based on ultraviolet image analysis. The method comprises the following steps: acquiring an RGB image of dental plaque; converting the RGB image into an HSV image; performing tooth region identification, single tooth segmentation and single tooth contour cutting on the HSV image in sequence to obtain each single tooth ROI pixel and a total tooth ROI pixel; extracting a red fluorescence characteristic region from the HSV image, and calculating to obtain a red fluorescence region pixel and a red fluorescence average brightness value; the dental plaque severity score is calculated according to the total tooth ROI pixel, the red fluorescence region pixel and the red fluorescence average brightness value, the severity of the dental plaque is quantified, a user can know the tooth health state more clearly, and then oral health is maintained. The change of the score value is beneficial to motivating the user to continuously monitor the dental plaque condition, so that the user can conveniently manage oral hygiene and health more finely, and the user experience is improved.

The toothbrush according to the invention is designed to be elastic and reversibly deflectable in the area of ​​the finger groove (Fm). If the maximum permissible cleaning force on the teeth and gums is exceeded, small but perceptible movements occur between the individual transverse ribs (Qs) in the area of ​​the finger groove (Fm). These movements are easily felt by the user's fingers resting on them, thus allowing the cleaning force to be constantly monitored, controlled, and limited. Furthermore, due to the coordinated design of the transverse ribs (Qs) (essentially in the form of an irregular truncated pyramid) and the essentially trough-shaped transverse recesses (Qa), there is no risk of pinching or chafing of the skin of the fingers, even when the recommended cleaning force is significantly exceeded.and wherein the surface and volumetric contact between all features in the area of ​​the finger groove (Fm) and the fingers resting thereon is consistently / permanently good, comfortable, stable, non-slip and secure, regardless of which specific tooth area in which specific quadrant of the dentition is being brushed or cleaned. The toothbrush according to the invention, in particular a mechanical manual toothbrush, can be manufactured to a high standard and routinely using both single-component and multi-component technologies (with the exception of bristles).

The invention relates to the technical field of dental digitization, and discloses a three-dimensional tooth model construction method, device, equipment and medium, and the method comprises the steps: obtaining a multi-frame oral cavity fringe pattern and an oral cavity color image, and carrying out fringe enhancement processing on the multi-frame oral cavity fringe pattern to obtain a multi-frame fringe enhancement pattern; extracting a stripe center point coordinate, and obtaining a code value of the stripe enhancement graph; performing mask area analysis on the oral cavity color image and the code value by using the segmentation model to obtain a tooth area mask; obtaining a target stripe center point coordinate and a target code value through data screening; performing data encapsulation on the target stripe center point coordinate, the target code value and the oral cavity scene color image, and sending oral cavity encapsulation data to a cloud node; performing real-time point cloud reconstruction based on the oral cavity encapsulation data to obtain three-dimensional point cloud data corresponding to the teeth of the target user; and performing point cloud optimization on the three-dimensional point cloud data to obtain a three-dimensional tooth model of the target user. According to the invention, the efficiency of constructing the three-dimensional tooth model can be improved.

The invention belongs to a tooth deformity quantification method, and provides a three-dimensional tooth jaw model deep coverage deformity quantification method and a related device aiming at the problems that a distance index measurement method for representing an upper and lower jaw coverage relation in an existing three-dimensional tooth jaw model is time-consuming, the measurement precision is difficult to guarantee, and the method excessively depends on subjective judgment of a doctor. Sequentially obtaining a projection point set in the occlusal surface direction of the tooth area, a central point of the projection point set in the occlusal surface direction of each tooth area and a global central point of the tooth model, then calculating a rotation amount based on the data, performing quaternion transformation, obtaining an identification line capable of representing a crest cutting position of each tooth crown, fitting the identification line of each tooth crown, and obtaining a crest cutting position of each tooth crown; the method comprises the following steps: obtaining two tooth crest cutting distribution curves, performing alignment processing on the two tooth crest cutting distribution curves, obtaining a matching point set through resampling, and obtaining a tooth jaw covering horizontal spacing according to the matching point set. The problem of precision loss in a traditional transformation method is effectively avoided, and the precision of tooth pose adjustment is ensured.

The invention relates to a periodontitis recognition system based on periodontal photos, which is mainly used for automatically recognizing periodontitis through the periodontal photos. The system comprises five modules: an image acquisition and preprocessing module, a multi-instance learning model training module, a classification and diagnosis module, a system common user side and a system expert user side. According to the system, through an image processing and target detection technology, firstly, collected periodontal pictures are preprocessed, low-quality pictures are eliminated, and tooth areas are cut out; and then classifying the images by using a multi-instance learning framework in combination with the comparison loss, and identifying the risk level of periodontitis. The user side provides a visual diagnosis result, and the expert side provides more detailed analysis information and suggestions for experts. The periodontitis diagnosis precision can be effectively improved, the clinical workload can be reduced, early-stage automatic identification of periodontitis can be realized, and timely and effective treatment suggestions can be provided for patients.

Methods of manufacturing dental etching templates. A virtual shell having one or more cavities shaped to receive one or more teeth of a virtual dental model of a patient's dentition may be formed. A virtual well may be formed at a position of the virtual shell based on an area on a tooth of the patient's dentition to be etched. Walls that define the virtual well may be shaped to accommodate a volume of a wafer that absorbs a liquid etching material and to accommodate a reservoir that extends beyond the volume of the wafer. The reservoir may be shaped to contain excess liquid etching material from the wafer. A physical etching template may be formed based on the virtual etching template.

The invention relates to the technical field of image data processing, in particular to a decayed tooth visual identification method and system for oral implantation, and the method comprises the steps: screening out a target tooth region from an obtained root tip piece to be identified, carrying out gray distribution analysis processing and brightness analysis processing on a preset neighborhood corresponding to each pixel point in each target tooth region; screening out a suspected caries lesion region; drawing a target central axis of a target tooth area to which each suspected caries area belongs, determining a vertical line of the target central axis as a target vertical line, translating the target vertical line, and forming an intersection point group by intersection points of the target vertical line translated each time and the edge of the suspected caries area; screening out a suspected medullary cavity point group from the intersection point group set corresponding to each suspected caries lesion region; and screening out the target caries damage region according to all the determined medullary cavity possibilities. According to the invention, image data processing is carried out on the to-be-identified root tip piece, so that the accuracy of identifying the caries lesion region is improved.

The invention relates to the technical field of dental crown data processing, and discloses a dental crown feature point extraction method, device and equipment and a medium, and the method comprises the steps: obtaining dental jaw point cloud data of a target patient, carrying out the point cloud grid reconstruction of the dental jaw point cloud data, and generating a three-dimensional dental crown digital model; performing dental region segmentation on the three-dimensional dental crown digital model to obtain an independent dental crown model of each tooth, and constructing a local coordinate system corresponding to the independent dental crown model; performing spatial registration on the independent dental crown model according to the local coordinate system to obtain a target dental crown model, and extracting an initial dental crown feature matrix according to the target dental crown model; performing adaptive sampling on the initial dental crown feature matrix to obtain dental crown sampling vertexes, and performing double-branch offset prediction according to the dental crown sampling vertexes to obtain an offset point cluster; and calculating a point cluster clustering center point of the offset point cluster, and determining a dental crown feature point according to the point cluster clustering center point. According to the method, the extraction efficiency and accuracy of the dental crown feature points can be improved.

This invention relates to the field of oral image analysis technology, specifically to a method for assisting in the identification of impacted teeth based on three-dimensional oral images. The method filters edge pixels in oral CT images to obtain enhanced images based on the degree of grayscale variation of these pixels and the shape, edge clarity, and grayscale distribution of their respective analysis areas. Then, based on the shape and tilt differences between the enhanced sagittal CT image and other tooth regions of the wisdom tooth in the three-dimensional oral model, the area of ​​the corresponding tooth region in the enhanced axial CT image, and the distance between adjacent tooth regions in the enhanced coronal CT image, the impacted wisdom tooth in the three-dimensional oral model is determined. This invention effectively improves the accuracy of impacted wisdom tooth identification.

One purpose of the present disclosure is to provide a method capable of further conveniently and intuitively providing periodontal data for a dental patient. To this end, a method for generating periodontal data, according to an embodiment of the present disclosure, may comprise the steps of: obtaining intra oral scan (IOS) data for a tooth portion of a patient, 3-dimensional (3D) face data for the face of the patient, including the tooth portion, and CT scan data including the tooth portion of the patient; generating a dental 3D avatar in which the IOS data, the 3D face data, and the CT scan data are matched with each other; and generating periodontal data for the teeth of the patient by using the dental 3D avatar.

The invention discloses a tooth detection method and device, and relates to the technical field of artificial intelligence and medical health. A specific embodiment of the method comprises the following steps: recognizing face key points according to an obtained to-be-detected image; in response to the fact that the identification result does not meet the preset detection condition, recursively extracting mouth features from the to-be-detected image, and determining a mouth region based on the mouth features; and identifying a tooth area from the mouth area, and performing color detection processing on the tooth area to generate a tooth detection result. According to the embodiment, double mechanisms of face key point detection and the feature classifier are fused, face key point recognition is preferentially carried out, and when the main detection fails, the feature classifier is switched to carry out standby detection, so that the tooth detection efficiency and the accuracy of a detection result are improved, and the user experience is improved.

The invention discloses an array type ultrasonic tooth cleaning device based on pressure-sensitive self-flushing, and relates to the field of ultrasonic tooth cleaning, the device comprises a plurality of pressure-sensitive transduction units and micro-flushing nozzles which are integrated on a flexible base, and an ultrasonic water supply and drainage comprehensive control unit. A user applies pressure to a tooth area through occlusion, and the pressure sensing transduction unit collects pressure data in real time and transmits the pressure data to the ultrasonic water supply and drainage comprehensive control unit. The control unit judges whether a tooth cleaning program is started or not according to preset conditions, once the tooth cleaning program is triggered, power is supplied to the transducers in the corresponding areas, ultrasonic fixed-point cluster cleaning is carried out, meanwhile, the associated micro-flushing nozzles are controlled to carry out collaborative flushing, and sewage in the oral cavity is pumped to an external sewage collection pool in real time. According to the invention, ultrasonic precise cleaning and synchronous water flushing aiming at a specific tooth area are realized in an occlusion pressure automatic triggering manner, and sewage can be discharged in time, so that the tooth cleaning accuracy, convenience and cleaning efficiency are improved.

The application relates to the technical field of image processing, and provides a tooth detection method and device, a terminal device and a readable storage medium, the method comprising the following steps: acquiring a CT image of a patient's oral cavity and preprocessing the CT image to obtain a three-dimensional tooth region image; performing post-processing by using a tooth detection model to obtain a tooth detection result of the patient; wherein the tooth detection model comprises a full-tooth segmenter, a tooth crown and root segmenter and a tooth crown classifier; when the post-processing is performed, the three-dimensional tooth region image is input into the full-tooth segmenter to obtain a full-tooth segmentation result; the full-tooth segmentation result and the CT image are input into the tooth crown and root segmenter to obtain a tooth crown and root segmentation result; and then the tooth crown and root segmentation result and the CT image are input into the tooth crown classifier to obtain a tooth crown classification result. The method can accurately obtain tooth segmentation information and missing tooth position information of the patient, and has high calculation speed.

The present invention relates to an image processing method, comprising: acquiring a visible light image, a near-infrared image, and a fluorescence image of the same tooth region to obtain a multimodal image; inputting the multimodal image into a segmentation network, wherein a spatial attention module is embedded in the skip connection between the encoder and decoder of the segmentation network, and the segmentation network outputs a binary mask of the tooth region; extracting the contours of individual teeth from the binary mask, determining the minimum bounding rectangle and geometric center of gravity of each contour; assigning an FDI tooth position code to each contour based on the horizontal coordinate of the geometric center of gravity; cropping the corresponding individual tooth image block from the multimodal image based on the minimum bounding rectangle; inputting the individual tooth image block into a multi-branch convolutional neural network to obtain a unified feature vector; inputting the unified feature vector into a fully connected classification network, which outputs probability values ​​corresponding to different categories. The present invention also relates to image processing devices, media, computer program products, and tooth recognition systems.

The invention relates to the technical field of image analysis, in particular to an oral dental plaque mark detection method and system, and the method comprises the steps: obtaining tooth surface images of a to-be-detected patient under different preset wavelengths, and recognizing a target tooth region from each tooth surface image; determining a plaque feature representation value and a plaque possible width corresponding to each tooth pixel point; taking the tooth pixel point as an end point, drawing a target ray with the extending direction being a vertical upward direction, and forming a dental crown intersection section by the intersection of the target ray and the dental crown area; cutting a reference pixel section from the target ray; determining a plaque possible index corresponding to each tooth pixel point; and based on the plaque possible index, fusing all the tooth surface images, and based on the obtained fused image, carrying out plaque mark detection. According to the invention, by analyzing the tooth surface images under different preset wavelengths, the mark detection of the dental plaque is realized, and the accuracy of the mark detection of the dental plaque is improved.

The present disclosure relates to a three-dimensional dynamic tracking method, device, electronic device and storage medium. The tracking method includes: acquiring facial smile data, three-dimensional tooth data and facial template data; registering the acquired facial smile data, three-dimensional tooth data and facial template data in a preset coordinate system to obtain initial point cloud data; fusing the initial depth point cloud data to obtain an isosurface, and obtaining target depth point cloud data corresponding to the isosurface; back-projecting the target depth point cloud data to initial texture data, and obtaining target texture data corresponding to the back-projected facial smile data; optimizing the initial facial template point cloud data according to the target depth point cloud data to obtain target facial template point cloud data, thereby realizing tracking of facial expression changes; fitting the target facial template point cloud data and the tooth area identified by the initial texture data with the initial three-dimensional tooth data in a fitting area, thereby improving the accuracy of three-dimensional tooth tracking.

The invention discloses oral cavity digital impression equipment, a three-dimensional oral cavity model reconstruction method and equipment and a storage medium. An oral cavity digital impression device comprises a structured light control module used for projecting structured light to a target oral cavity; the infrared band control module is used for projecting infrared light to a target oral cavity; the main control unit controls the structured light control module to project structured light, controls the image sensor to collect a first image and transmits the first image to the upper computer, and the first image is a deformed two-dimensional image; the main control unit controls the infrared band control module to project infrared light, controls the image sensor to collect a second image and transmits the second image to the upper computer, and the second image is a gray level image; and the upper computer constructs the initial three-dimensional oral cavity model based on the first image, and performs contour optimization processing on the initial three-dimensional oral cavity model through the second image to obtain the target three-dimensional oral cavity model, so that the accuracy of the boundary between the tooth area and the gingival area is improved.

This image processing method is for displaying a dental plaque region on the basis of an image obtained by photographing teeth and dental plaque undergoing a fluorescence reaction as a result of being irradiated with light including a wavelength band of blue light, said method comprising: detecting a natural tooth region from the region of the teeth on the basis of the image (S201-S206); detecting plaque regions on the basis of the image (S207); and displaying a plaque region exclusively in the natural tooth region (S105). For example, the image processing method may involve, in detecting a natural tooth region, detecting a first region that is (i) a region, among all pixel regions of the image, having a luminance value equal to or greater than a predetermined first threshold or (ii) a region, among all pixel regions of the image, having a green pixel value equal to or greater than a predetermined second threshold, and detecting a natural tooth region on the basis of the first region.

The invention relates to the technical field of oral cavities, and discloses a dental three-dimensional model local coordinate system analysis method, device and equipment and a medium, and the method comprises the steps: carrying out the three-dimensional data scanning of a dental region, and obtaining a dental three-dimensional digital model; dividing the dental jaw three-dimensional digital model into a plurality of groups of dental crown three-dimensional digital models; establishing a global coordinate system according to the dental crown three-dimensional digital model, and calculating a centroid according to the global coordinate system; constructing an initial local coordinate system according to the centroid, and performing offset point cluster analysis on the local coordinate system to obtain an offset point cluster; and calculating a direction unit vector according to the offset point cluster, and establishing a local coordinate system according to the direction unit vector. And through automatic calculation, subjective judgment and personal errors in manual operation are effectively avoided, so that the consistency and reliability of treatment results are improved.

A method for generating dental registration data by a device including a communication circuit, a memory, and a processor is provided. The method performed by the processor includes acquiring an intraoral scan image of a dental region of a patient, wherein the intraoral scan image includes a maxillary scan image and a mandibular scan image, acquiring a CT scan image including the dental region of the patient, generating first sub-registration data by registering the maxillary scan image with the CT scan image, generating first registration data by registering the mandibular scan image with the first sub-registration data, generating second sub-registration data by registering the mandibular scan image with the CT scan image, and generating second registration data by registering the first sub-registration data with the second sub-registration data.

Methods for a personalized root-shaped implant are disclosed. The method for generating a personalized root-shaped implant model includes capturing a CBCT image of a missing teeth area of a patient; performing image segmentation and model reconstruction on the CBCT image and obtains a full-mouth original teeth model; selecting a target tooth model from the full-mouth original teeth model; and processing the target tooth model in a preset strategy such that the personalized root-shaped implant model is generated.

The present application relates to the technical field of dental digitization, and discloses a three-dimensional tooth model construction method, device, equipment and medium, comprising: acquiring multiple frames of oral stripe images and oral color images, performing stripe enhancement processing on the multiple frames of oral stripe images to obtain multiple frames of stripe enhancement images; extracting stripe center point coordinates and acquiring code values of the stripe enhancement images; performing mask region analysis on the oral color images and the code values by using a segmentation model to obtain a tooth region mask; obtaining target stripe center point coordinates and target code values through data screening; data encapsulating the target stripe center point coordinates, the target code values and the oral scene color images, and sending the oral encapsulated data to a cloud node; performing real-time point cloud reconstruction based on the oral encapsulated data to obtain three-dimensional point cloud data corresponding to the target user's teeth; and performing point cloud optimization on the three-dimensional point cloud data to obtain a three-dimensional tooth model of the target user. The present application can improve the efficiency of three-dimensional tooth model construction.

The present invention provides a VTK-based method for initial extraction of oral guides, belonging to the technical fields of oral image measurement, sleeve fusion, image region segmentation, and three-dimensional image data expansion. The method solves the problems of oral CT image and medical three-dimensional image measurement, tooth surface segmentation, and oral guide extraction. The technical solution comprises the following steps: S10, distance and angle measurement; S20, sleeve fusion; S30, tooth region segmentation; S40, tooth region expansion. The beneficial effects of the present invention are as follows: the present invention uses a variety of different methods to conduct algorithmic comparative analysis; the vtkWarpVector method is used for image expansion, and finally the data after tooth surface expansion is 3D printed to obtain an initial extraction sample of the oral guide.

The application relates to the technical field of oral cavity equipment, and discloses a dental plaque quantitative analysis system, a method and a storage medium. The system comprises a dental plaque observation instrument and an upper computer. The dental plaque observation instrument is used for collecting a two-dimensional fluorescence image of teeth in an oral cavity area of a to-be-measured object. The upper computer is in communication connection with the dental plaque observation instrument. The upper computer is configured to: receive the two-dimensional fluorescence image of teeth sent by the dental plaque observation instrument; perform image segmentation and image depth estimation based on the two-dimensional fluorescence image of teeth, perform three-dimensional reconstruction, and obtain a three-dimensional tooth model containing a plaque area and a tooth area; then calculate the surface area of the plaque area and the surface area of the tooth area respectively, obtain an area ratio of the surface area of the plaque area to the surface area of the tooth area, and take the area ratio as a quantitative analysis result of dental plaque. The application can accurately calculate the area of the plaque area and realize high-precision quantitative detection of dental plaque.