CN111833244A - Dental panoramic image generation method and device and computer readable storage medium - Google Patents
Dental panoramic image generation method and device and computer readable storage medium Download PDFInfo
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Abstract
According to the dental panoramic image generation method, the device and the computer readable storage medium disclosed by the embodiment of the invention, a preset standard dental arch line is obtained, and a plurality of reconstruction points are determined on the standard dental arch line; respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point; controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence; and performing superposition processing on all images in the image sequence to generate the dental panoramic image. By implementing the method, the dental panoramic image is reconstructed by adopting a position synchronization mode, the image distortion and the positioning requirements on a patient are reduced, and the clear imaging of the personalized dental arch wire can be effectively met.
Description
Technical Field
The invention relates to the technical field of medical imaging, in particular to a dental panoramic image generation method and device and a computer readable storage medium.
Background
Dental panoramic imaging is one of important detection means for oral diseases, is used for displaying images of all teeth on one X-ray film, and is widely applied clinically.
At present, a Time Delayed Integration (TDI) sensor is generally used for dental panoramic imaging, and the TDI is based on multiple exposures to the same target, so that the collection of light energy is greatly increased, the signal-to-noise ratio can be improved, and the weight and the volume of a detector can be reduced by a delay Integration method. The TDI requires that the frame frequency of the flat panel detector is strictly synchronous with the movement rate of the target during scanning, and the acquired images are subjected to translation superposition according to set parameters to obtain panoramic images. However, this method is based on a predetermined scheme, the imaging geometry in actual shooting is not included in the actual reconstruction process, which results in large image distortion and higher requirements for patient positioning, once the patient deviates from the preset orbit, the reconstructed image generates a large area of blur, which requires secondary shooting, increases the dose received by the patient, and in addition, when the user bucks teeth to a greater extent, the imaging of the anterior tooth root is not clear.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a dental panoramic image generation method, a dental panoramic image generation device and a computer-readable storage medium, which can at least solve the problems of large image distortion, high requirements on the positioning of a patient and limited clear imaging scene when a TDI (time delay integration) mode is adopted for dental panoramic imaging in the related art.
In order to achieve the above object, a first aspect of the embodiments of the present invention provides a method for generating a dental panoramic image, the method including:
acquiring a preset standard dental arch line, and determining a plurality of reconstruction points on the standard dental arch line;
respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point;
controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence;
and performing superposition processing on all images in the image sequence to generate a dental panoramic image.
In order to achieve the above object, a second aspect of embodiments of the present invention provides a dental panoramic image generation apparatus, including:
the system comprises an acquisition module, a reconstruction module and a reconstruction module, wherein the acquisition module is used for acquiring a preset standard dental arch line and determining a plurality of reconstruction points on the standard dental arch line;
the determining module is used for respectively determining the position information of each moving point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point;
the acquisition module is used for controlling the dental panoramic imaging system to move according to the coordinates of the moving points and acquiring an image sequence;
and the generating module is used for performing superposition processing on all images in the image sequence to generate the dental panoramic image.
To achieve the above object, a third aspect of embodiments of the present invention provides an electronic apparatus, including: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more programs stored in the memory to implement the steps of any one of the above-mentioned dental panoramic image generation methods.
To achieve the above object, a fourth aspect of the embodiments of the present invention provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of any one of the above-described dental panoramic image generation methods.
According to the dental panoramic image generation method, the dental panoramic image generation device and the computer readable storage medium, a preset standard dental arch line is obtained, and a plurality of reconstruction points are determined on the standard dental arch line; respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point; controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence; and performing superposition processing on all images in the image sequence to generate the dental panoramic image. By implementing the method, the dental panoramic image is reconstructed by adopting a position synchronization mode, the image distortion and the positioning requirements on a patient are reduced, and the clear imaging of the personalized dental arch wire can be effectively met.
Other features and corresponding effects of the present invention are set forth in the following portions of the specification, and it should be understood that at least some of the effects are apparent from the description of the present invention.
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 of 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 basic flowchart of a dental panoramic image generation method according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a reconstruction point on a standard dental arch wire according to a first embodiment of the present invention;
fig. 3 is a schematic view of a dental panoramic imaging system provided by a first embodiment of the present invention;
FIG. 4 is a schematic view of a proxel according to a first embodiment of the present invention;
FIG. 5 is a diagram of an image array of reconstruction points according to a first embodiment of the present invention;
FIG. 6 is a dental panoramic image provided in accordance with a first embodiment of the present invention;
FIG. 7 is a schematic view of a multi-track system according to a first embodiment of the present invention;
fig. 8 is a schematic structural diagram of a dental panoramic image generation apparatus according to a second embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to a third embodiment of the invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment:
in order to solve the technical problems of large image distortion, high requirement for patient positioning and limited clear imaging scene when a TDI method is used for dental panoramic imaging in the related art, the present embodiment provides a dental panoramic image generation method, as shown in fig. 1, a basic flow diagram of the dental panoramic image generation method provided by the present embodiment, and the dental panoramic image generation method provided by the present embodiment includes the following steps:
Specifically, the standard dental arch wire of the embodiment is a dental arch wire with high universality, and can meet the tooth distribution conditions of most objects to be measured. In this embodiment, a specific sampling point on a standard dental arch line is used as a reconstruction point for image acquisition and reconstruction, and the number of the reconstruction points may be determined according to specific requirements, and is not limited uniquely again.
Optionally, determining the plurality of reconstruction points on the standard arch wire comprises: and determining a plurality of reconstruction points with equal chord length on the standard dental arch line.
Specifically, fig. 2 is a schematic diagram of reconstruction points on a standard dental arch line provided in the present embodiment, where a to f are six reconstruction points in the present embodiment, and each reconstruction point corresponds to a position of a cross-section of an anatomical structure to be actually located in a panoramic image. By selecting the reconstruction points with equal chord length, namely enabling the straight line distances between the adjacent reconstruction points to be equal, the consistency of the transverse distortion of the image can be effectively ensured.
Optionally, the chord length calculation formula is expressed as: d/h ═ D1/D2(ii) a Wherein D is the chord length between adjacent reconstruction points, h is the pixel pitch of the flat panel detector of the dental panoramic imaging system, D1Is the distance between an X-ray generator and a flat panel detector of a dental panoramic imaging system, D2Is the distance between the X-ray generator and the center of rotation.
Specifically, in practical applications, when the equal chord length sampling is performed, the selected chord length value may be determined according to different manners. Fig. 3 is a schematic diagram of the dental panoramic imaging system provided in the present embodiment, in which the chord length is preferably determined in consideration of the imaging geometry at the time of actual shooting.
And 102, respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point.
Specifically, in the present embodiment, the panoramic imaging is performed by the dental panoramic imaging system, and referring to fig. 3 again, the dental panoramic imaging system includes an X-ray generator, a flat panel detector and a supporting arm for supporting the two, and the supporting arm performs panoramic image scanning around the region to be measured of the patient with a desired rotation center. It should be understood that the dental panoramic imaging system is controlled to operate by determining position information based on the position information of the reconstruction points on the standard dental arch line, determining a series of position coordinates corresponding to the reconstruction points on the dental arch line based on the standard dental arch line, and downloading the position coordinates to the main control board. The position information of the dental panoramic imaging system during movement comprises: a position X in the abscissa direction, a position Y in the ordinate direction, and a rotation angle a. In the process of rotation of the control mechanism, a linear interpolation algorithm can be adopted to realize multi-axis coordinated motion so as to complete a certain motion track, and the rotating shaft adopts a following motion algorithm and is used for following linear interpolation motion.
And 103, controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence.
And step 104, performing superposition processing on all images in the image sequence to generate the dental panoramic image.
Specifically, in the embodiment, a position synchronization mode is adopted to replace speed synchronization, the dental panoramic image is reconstructed through the known positions of the X-ray source, the reconstruction point and the flat panel detector and the geometric information such as the shooting direction, the rotation center is fixed, the requirement of the patient on the positioning is reduced, the distortion is small, the obtained focused panoramic image is clearer, and convenience is provided for the later diagnosis of a doctor.
Optionally, the superimposing all the images in the image sequence, and the generating the dental panoramic image includes: determining position information of a plurality of projection points corresponding to each reconstruction point based on the position information of each reconstruction point, the position information of an X-ray generator of the dental panoramic imaging system and the position information of a flat panel detector of the dental panoramic imaging system; superposing corresponding images in the image sequence based on the position information of the plurality of projection points of each reconstruction point respectively to obtain an image column corresponding to each reconstruction point; and splicing all the image columns to generate the dental panoramic image.
Specifically, in this embodiment, the dental panoramic image is generated by a method of obtaining projection points for the image sequence through a geometric relationship. And calculating to obtain a flat plate projection point according to the obtained image sequence, the reconstruction point, the X-ray generator (namely the ray source) and the position of the flat plate detector, wherein for a certain track, the point where the straight line connecting the ray source and the reconstruction point intersects with the flat plate detector when the image is acquired is the projection point. As shown in fig. 4, which is a schematic view of the projection points provided in this embodiment, a connection line between the radiation source and the reconstruction point P intersects with a plane at a point P1, where a point P1 is also a projection point. Fig. 5 is a schematic diagram of an image column of a plurality of reconstruction points, and fig. 6 is a dental panoramic image.
Optionally, before stitching all image columns to generate the dental panoramic image, the method further includes: normalizing all the image columns; stitching all the image columns to generate the dental panoramic image comprises the following steps: and splicing all the normalized image columns to generate the dental panoramic image.
Specifically, in the present embodiment, the interference of the medical image due to the uneven light is reduced by the normalization process, so that the brightness of the generated dental panoramic image is uniform. It should be noted that, in the normalization process in this embodiment, for each reconstruction point, after finding the projection point of the flat panel along the X-ray source point and the reconstruction point, an angle between the realization formed by the projection point of the reconstruction point and the projection point of the flat panel and the normal of the reconstruction point is calculated, then a weighting factor of the column is calculated based on the angle, the column weighted by the weighting factor is superimposed on the corresponding column of the panorama, then the column is normalized by the summation result of the weighting factors, and finally the columns of the dental panoramic image are normalized by dividing the value of the given column by the sum of the weighting factors of the column.
Optionally, after generating the dental panoramic image, the method further includes: determining a preset number of dental arch lines to be reconstructed based on the standard dental arch lines, and respectively determining position information of corresponding reconstruction points on the dental arch lines to be reconstructed based on the position information of a plurality of reconstruction points on the standard dental arch lines; repeatedly executing the steps 102 to 104 to obtain a dental panoramic image corresponding to the dental arch line to be reconstructed; from all the obtained dental panoramic images, a target dental panoramic image is determined.
Specifically, in this embodiment, a multi-track method can be used to reconstruct a dental panoramic image, a plurality of panoramic images are reconstructed by one-time shooting, then a most suitable panoramic image is selected from the plurality of panoramic images, a body layer image of a complete dentition can be displayed on the same film, and positions of upper and lower jaws, temporomandibular joints, maxillary sinuses, nasal cavities and the like on two sides can be simultaneously displayed, which is beneficial for a user to observe the overall structure of teeth and is beneficial for a doctor to perform overall evaluation and diagnosis. In this embodiment, when determining other dental arch wire tracks based on the standard dental arch wire, the other dental arch wire tracks may be obtained by contracting the standard dental arch wire inward or expanding the standard dental arch wire outward by a preset distance, and only the information of the reconstruction point is different for each track, as shown in fig. 7, which is a multi-track schematic diagram provided in this embodiment, there are five tracks in total, and the middle track is the standard dental arch wire track.
Optionally, determining the target dental panoramic image from all the obtained dental panoramic images comprises: carrying out anatomical position normalization processing on all the obtained dental panoramic images; respectively determining the image edge number of each processed dental panoramic image; and determining the dental panoramic image with the maximum number of the image edges as the target dental panoramic image.
Specifically, in the present embodiment, the clearest image of all the obtained dental panoramic images is used as the final target dental panoramic image. And performing resampling on the obtained different orbit images to enable anatomical positions to be in one-to-one correspondence, and then comparing the edge number of the sampled images, wherein the image with the largest edge number is the clearest panoramic image.
According to the dental panoramic image generation method provided by the embodiment of the invention, a preset standard dental arch line is obtained, and a plurality of reconstruction points are determined on the standard dental arch line; respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point; controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence; and performing superposition processing on all images in the image sequence to generate the dental panoramic image. By implementing the method, the dental panoramic image is reconstructed by adopting a position synchronization mode, the image distortion and the positioning requirements on a patient are reduced, and the clear imaging of the personalized dental arch wire can be effectively met.
Second embodiment:
in order to solve the technical problems that image distortion is large, requirements for patient positioning are high, and a clear imaging scene is limited when a TDI method is used for dental panoramic imaging in the related art, the present embodiment shows a dental panoramic image generation apparatus, and referring to fig. 8 specifically, the dental panoramic image generation apparatus of the present embodiment includes:
an obtaining module 801, configured to obtain a preset standard dental arch line, and determine multiple reconstruction points on the standard dental arch line;
a determining module 802, configured to determine, based on the location information of each reconstruction point, location information of each motion point corresponding to the dental panoramic imaging system;
the acquisition module 803 is used for controlling the dental panoramic imaging system to move according to the coordinates of the moving points and acquiring an image sequence;
a generating module 804, configured to perform overlay processing on all images in the image sequence, so as to generate a dental panoramic image.
Specifically, in the present embodiment, a specific sampling point on the standard dental arch line is used as a reconstruction point to perform image acquisition and reconstruction. The position information of the dental panoramic imaging system during movement is determined based on the position information of the reconstruction points on the standard dental arch line, a series of position coordinates corresponding to the reconstruction points on the dental arch line are determined according to the standard dental arch line, and the position coordinates are downloaded into the main control board, so that the mechanism can be controlled to operate. And finally, reconstructing the dental panoramic image according to the known geometric information such as the positions of the X-ray source, the reconstruction point, the flat panel detector, the shooting direction and the like.
In some embodiments of the present embodiment, the obtaining module 801 is specifically configured to obtain a preset standard dental arch line, and determine a plurality of reconstruction points with equal chord length on the standard dental arch line.
Further, in some embodiments of the present embodiment, the chord length calculation formula is expressed as: d/h ═ D1/D2(ii) a Wherein D is the chord length between adjacent reconstruction points, h is the pixel pitch of the flat panel detector of the dental panoramic imaging system, D1Is the distance between an X-ray generator and a flat panel detector of a dental panoramic imaging system, D2Is the distance between the X-ray generator and the center of rotation.
In some implementations of this embodiment, the generating module 804 is specifically configured to determine the position information of the plurality of projection points corresponding to each reconstruction point based on the position information of each reconstruction point, the position information of the X-ray generator of the dental panoramic imaging system, and the position information of the flat panel detector of the dental panoramic imaging system; superposing corresponding images in the image sequence based on the position information of the plurality of projection points of each reconstruction point respectively to obtain an image column corresponding to each reconstruction point; and splicing all the image columns to generate the dental panoramic image.
Further, in some embodiments of the present embodiment, the dental panoramic image generation apparatus further includes: and the normalization module is used for performing normalization processing on all the image columns before all the image columns are spliced to generate the dental panoramic image. Correspondingly, the generating module 804 is specifically configured to splice all the normalized image columns to generate a dental panoramic image.
Further, in some embodiments of the present embodiment, the dental panoramic image generation apparatus further includes: the multi-time reconstruction module is used for determining a preset number of dental arch lines to be reconstructed based on the standard dental arch lines after the dental panoramic image is generated, and respectively determining the position information of the corresponding reconstruction points on the dental arch lines to be reconstructed based on the position information of the plurality of reconstruction points on the standard dental arch lines; repeatedly executing the dental panoramic image reconstruction step to obtain a dental panoramic image corresponding to a dental arch line to be reconstructed; from all the obtained dental panoramic images, a target dental panoramic image is determined.
In some embodiments of this embodiment, the multiple-time reconstruction module is specifically configured to perform anatomical position normalization processing on all the obtained dental panoramic images when determining the target dental panoramic image from all the obtained dental panoramic images; respectively determining the image edge number of each processed dental panoramic image; and determining the dental panoramic image with the maximum number of the image edges as the target dental panoramic image.
It should be noted that, the dental panoramic image generation method in the foregoing embodiment can be implemented based on the dental panoramic image generation apparatus provided in this embodiment, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the dental panoramic image generation apparatus described in this embodiment may refer to the corresponding process in the foregoing method embodiment, and details are not described here again.
The dental panoramic image generation device provided by the embodiment is adopted to obtain a preset standard dental arch line and determine a plurality of reconstruction points on the standard dental arch line; respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point; controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence; and performing superposition processing on all images in the image sequence to generate the dental panoramic image. By implementing the method, the dental panoramic image is reconstructed by adopting a position synchronization mode, the image distortion and the positioning requirements on a patient are reduced, and the clear imaging of the personalized dental arch wire can be effectively met.
The third embodiment:
the present embodiment provides an electronic device, as shown in fig. 9, which includes a processor 901, a memory 902, and a communication bus 903, where: the communication bus 903 is used for realizing connection communication between the processor 901 and the memory 902; the processor 901 is configured to execute one or more computer programs stored in the memory 902 to implement at least one step of the dental panoramic image generation method in the first embodiment.
The present embodiments also provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer-readable storage medium in this embodiment may be used for storing one or more computer programs, and the stored one or more computer programs may be executed by a processor to implement at least one step of the method in the first embodiment.
The present embodiment also provides a computer program, which can be distributed on a computer readable medium and executed by a computing device to implement at least one step of the method in the first embodiment; and in some cases at least one of the steps shown or described may be performed in an order different than that described in the embodiments above.
The present embodiments also provide a computer program product comprising a computer readable means on which a computer program as shown above is stored. The computer readable means in this embodiment may include a computer readable storage medium as shown above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A dental panoramic image generation method, comprising:
a, acquiring a preset standard dental arch line, and determining a plurality of reconstruction points on the standard dental arch line;
b, respectively determining the position information of each motion point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point;
c, controlling the dental panoramic imaging system to move according to the coordinates of the moving points, and acquiring an image sequence;
and D, performing superposition processing on all images in the image sequence to generate a dental panoramic image.
2. A dental panoramic image generation method according to claim 1, wherein the determining a plurality of reconstruction points on the standard dental arch line comprises:
determining a plurality of reconstruction points with equal chord length on the standard dental arch line.
3. A dental panoramic image generation method according to claim 2, wherein the chord length calculation formula is expressed as: d/h ═ D1/D2;
Wherein D is a chord length between adjacent reconstruction points, h is a flat panel detector pixel spacing of the dental panoramic imaging system, and D1Is the distance between the X-ray generator and the flat panel detector of the dental panoramic imaging system, the D2For the X-ray generator and rotationThe distance between the centers.
4. The dental panoramic image generation method of claim 1, wherein the superimposing all the images in the image sequence to generate the dental panoramic image comprises:
determining position information of a plurality of projection points corresponding to each reconstruction point based on the position information of each reconstruction point, the position information of an X-ray generator of the dental panoramic imaging system and the position information of a flat panel detector of the dental panoramic imaging system;
superposing corresponding images in the image sequence based on the position information of the plurality of projection points of each reconstruction point respectively to obtain an image column corresponding to each reconstruction point;
and splicing all the image columns to generate the dental panoramic image.
5. The dental panoramic image generation method of claim 4, wherein before generating the dental panoramic image by stitching all of the image columns, the method further comprises:
normalizing all the image columns;
the stitching all the image columns to generate the dental panoramic image comprises:
and splicing all the normalized image columns to generate the dental panoramic image.
6. The dental panoramic image generation method of any one of claims 1 to 5, further comprising, after generating the dental panoramic image:
determining a preset number of dental arch lines to be reconstructed based on the standard dental arch line, and respectively determining position information of corresponding reconstruction points on the dental arch line to be reconstructed based on the position information of the plurality of reconstruction points on the standard dental arch line;
repeating the step B to the step D to obtain a dental panoramic image corresponding to the dental arch line to be reconstructed;
from all the obtained dental panoramic images, a target dental panoramic image is determined.
7. A dental panoramic image generation method according to claim 6, wherein the determining of the target dental panoramic image from all the obtained dental panoramic images comprises:
carrying out anatomical position normalization processing on all the obtained dental panoramic images;
respectively determining the image edge number of each processed dental panoramic image;
and determining the dental panoramic image with the maximum number of the image edges as the target dental panoramic image.
8. A dental panoramic image generation apparatus, comprising:
the system comprises an acquisition module, a reconstruction module and a reconstruction module, wherein the acquisition module is used for acquiring a preset standard dental arch line and determining a plurality of reconstruction points on the standard dental arch line;
the determining module is used for respectively determining the position information of each moving point corresponding to the dental panoramic imaging system based on the position information of each reconstruction point;
the acquisition module is used for controlling the dental panoramic imaging system to move according to the coordinates of the moving points and acquiring an image sequence;
and the generating module is used for performing superposition processing on all images in the image sequence to generate the dental panoramic image.
9. An electronic device, comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more programs stored in the memory to implement the steps of the dental panoramic image generation method according to any one of claims 1 to 7.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores one or more programs which are executable by one or more processors to implement the steps of the dental panoramic image generation method according to any one of claims 1 to 7.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112790887A (en) * | 2020-12-31 | 2021-05-14 | 深圳市维新登拓医疗科技有限公司 | Oral imaging method, system and device, and readable storage medium |
CN113069141A (en) * | 2021-03-31 | 2021-07-06 | 有方(合肥)医疗科技有限公司 | Method and system for shooting oral panoramic film, electronic equipment and readable storage medium |
CN117462163A (en) * | 2023-12-27 | 2024-01-30 | 有方(合肥)医疗科技有限公司 | Volume layer image generation method, device and system, electronic equipment and storage medium |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080063139A1 (en) * | 2005-05-02 | 2008-03-13 | Tuomas Pantsar | Extra-oral digital panoramic dental x-ray imaging system |
JP2008086659A (en) * | 2006-10-04 | 2008-04-17 | Axion Japan:Kk | Image processing method and panoramic image photographing device |
JP2009531104A (en) * | 2006-03-27 | 2009-09-03 | オーワイ アジャット リミテッド | Extra-maxillary X-ray imaging system and method |
US20110194787A1 (en) * | 2010-02-08 | 2011-08-11 | James Jiwen Chun | Constructing Three Dimensional Images Using Panoramic Images |
CN102469977A (en) * | 2009-07-30 | 2012-05-23 | 株式会社电视系统 | Radiation image pickup device and image pickup method by radiation |
CN102609965A (en) * | 2012-02-13 | 2012-07-25 | 北京朗视仪器有限公司 | Data processing method of panoramagram generated by dental CBCT (cone beam computed tomography) |
CN102917641A (en) * | 2010-05-11 | 2013-02-06 | 株式会社电视系统 | Radiation imaging apparatus and phantom used for the same |
CN105451660A (en) * | 2013-07-19 | 2016-03-30 | Axion日本株式会社 | Panoramic image capturing device, and image-based diagnostic method used therein |
KR20160083788A (en) * | 2014-12-31 | 2016-07-12 | 오스템임플란트 주식회사 | Method for Generating Dental Panoramic Image, Apparatus and Recording Medium Thereof |
CN105934201A (en) * | 2013-12-18 | 2016-09-07 | 普兰梅卡有限公司 | Generating dental panoramic images |
CN107301622A (en) * | 2017-06-20 | 2017-10-27 | 广州华端科技有限公司 | The panoramic picture acquisition methods and system of oral cavity CBCT images |
US20170319159A1 (en) * | 2014-12-11 | 2017-11-09 | Hefei Meyer Optoelectronic Technology Inc. | Method and apparatus for generating dental panoramic image, and panoramic camera for photographing teeth |
KR20180027187A (en) * | 2016-09-06 | 2018-03-14 | 오스템임플란트 주식회사 | Method and apparatus for generating panoramic image, panoramic x-ray imaging apparatus, computer-readable recording medium and computer program |
CN108711177A (en) * | 2018-05-15 | 2018-10-26 | 南方医科大学口腔医院 | The fast automatic extracting method of volume data arch wire after a kind of oral cavity CBCT is rebuild |
CN109377534A (en) * | 2018-10-22 | 2019-02-22 | 南方医科大学 | The non-linear oral cavity CT panoramic image synthesis method of automatic sampling thickness detection |
CN109584147A (en) * | 2018-11-27 | 2019-04-05 | 东莞信大融合创新研究院 | A kind of dental panoramic drawing generating method based on conical beam CT |
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080063139A1 (en) * | 2005-05-02 | 2008-03-13 | Tuomas Pantsar | Extra-oral digital panoramic dental x-ray imaging system |
JP2009531104A (en) * | 2006-03-27 | 2009-09-03 | オーワイ アジャット リミテッド | Extra-maxillary X-ray imaging system and method |
JP2008086659A (en) * | 2006-10-04 | 2008-04-17 | Axion Japan:Kk | Image processing method and panoramic image photographing device |
CN102469977A (en) * | 2009-07-30 | 2012-05-23 | 株式会社电视系统 | Radiation image pickup device and image pickup method by radiation |
JP2015144898A (en) * | 2009-07-30 | 2015-08-13 | 株式会社テレシステムズ | Data processing apparatus for radiation imaging |
US20110194787A1 (en) * | 2010-02-08 | 2011-08-11 | James Jiwen Chun | Constructing Three Dimensional Images Using Panoramic Images |
CN102917641A (en) * | 2010-05-11 | 2013-02-06 | 株式会社电视系统 | Radiation imaging apparatus and phantom used for the same |
CN102609965A (en) * | 2012-02-13 | 2012-07-25 | 北京朗视仪器有限公司 | Data processing method of panoramagram generated by dental CBCT (cone beam computed tomography) |
CN105451660A (en) * | 2013-07-19 | 2016-03-30 | Axion日本株式会社 | Panoramic image capturing device, and image-based diagnostic method used therein |
US20160151026A1 (en) * | 2013-07-19 | 2016-06-02 | Axion Japan Co., Ltd. | Panoramic image capturing device, and image-based diagnostic method used therein |
CN105934201A (en) * | 2013-12-18 | 2016-09-07 | 普兰梅卡有限公司 | Generating dental panoramic images |
US20170319159A1 (en) * | 2014-12-11 | 2017-11-09 | Hefei Meyer Optoelectronic Technology Inc. | Method and apparatus for generating dental panoramic image, and panoramic camera for photographing teeth |
KR20160083788A (en) * | 2014-12-31 | 2016-07-12 | 오스템임플란트 주식회사 | Method for Generating Dental Panoramic Image, Apparatus and Recording Medium Thereof |
KR20180027187A (en) * | 2016-09-06 | 2018-03-14 | 오스템임플란트 주식회사 | Method and apparatus for generating panoramic image, panoramic x-ray imaging apparatus, computer-readable recording medium and computer program |
CN107301622A (en) * | 2017-06-20 | 2017-10-27 | 广州华端科技有限公司 | The panoramic picture acquisition methods and system of oral cavity CBCT images |
CN108711177A (en) * | 2018-05-15 | 2018-10-26 | 南方医科大学口腔医院 | The fast automatic extracting method of volume data arch wire after a kind of oral cavity CBCT is rebuild |
CN109377534A (en) * | 2018-10-22 | 2019-02-22 | 南方医科大学 | The non-linear oral cavity CT panoramic image synthesis method of automatic sampling thickness detection |
CN109584147A (en) * | 2018-11-27 | 2019-04-05 | 东莞信大融合创新研究院 | A kind of dental panoramic drawing generating method based on conical beam CT |
Non-Patent Citations (5)
Title |
---|
THITIPORN CHANWIMALUANG 等: "Automated Dental Arch Detection Using Computed Tomography Images", 《2008 9TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING》, 8 December 2008 (2008-12-08), pages 737 - 740 * |
TK PAPAKOSTA 等: "An automatic panoramic image reconstruction scheme from dental computed tomography images", 《DENTOMAXILLOFACIAL RADIOLOGY》, vol. 46, no. 4, 15 May 2017 (2017-05-15), pages 1 - 14 * |
万俊 等: "口腔全景锥形束CT图像重建算法", 《中国医学物理学杂志》, vol. 33, no. 5, 31 May 2016 (2016-05-31), pages 437 - 441 * |
吴琳: "CT图像中牙齿的半自动分割及应用", 《中国优秀硕士学位论文全文数据库 医药卫生科技辑》, vol. 2016, no. 07, 15 July 2016 (2016-07-15), pages 076 - 4 * |
段柳瑶: "基于CT断层图像序列的牙体自动分割研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》, vol. 2015, no. 06, 15 June 2015 (2015-06-15), pages 138 - 544 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112790887A (en) * | 2020-12-31 | 2021-05-14 | 深圳市维新登拓医疗科技有限公司 | Oral imaging method, system and device, and readable storage medium |
CN113069141A (en) * | 2021-03-31 | 2021-07-06 | 有方(合肥)医疗科技有限公司 | Method and system for shooting oral panoramic film, electronic equipment and readable storage medium |
CN113069141B (en) * | 2021-03-31 | 2023-03-31 | 有方(合肥)医疗科技有限公司 | Method and system for shooting oral panoramic film, electronic equipment and readable storage medium |
CN117462163A (en) * | 2023-12-27 | 2024-01-30 | 有方(合肥)医疗科技有限公司 | Volume layer image generation method, device and system, electronic equipment and storage medium |
CN117462163B (en) * | 2023-12-27 | 2024-03-29 | 有方(合肥)医疗科技有限公司 | Volume layer image generation method, device and system, electronic equipment and storage medium |
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