CN105662632A - Color information scanning device and method used for dental model - Google Patents
Color information scanning device and method used for dental model Download PDFInfo
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- CN105662632A CN105662632A CN201610252097.4A CN201610252097A CN105662632A CN 105662632 A CN105662632 A CN 105662632A CN 201610252097 A CN201610252097 A CN 201610252097A CN 105662632 A CN105662632 A CN 105662632A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007704 transition Effects 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
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- 238000006731 degradation reaction Methods 0.000 description 1
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- 230000003628 erosive effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
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- Oral & Maxillofacial Surgery (AREA)
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
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- Length Measuring Devices By Optical Means (AREA)
Abstract
本发明公开了一种用于牙颌模型的颜色信息扫描装置及方法，该装置包括投影仪、控制系统以及至少一台黑白相机，控制系统与上述投影仪、所有黑白相机均分别相连，所述的投影仪仅投射红、绿、蓝三种单色光。控制系统控制投影仪向牙颌模型投射红、绿、蓝单色光，在每种单色光下拍摄牙颌模型不同角度照片；将不同单色光下同一角度拍摄的照片组合获得在该拍摄角度下牙颌模型的单片数据；对不同角度的单片数据上的颜色信息进行融合，消除方向光造成的光影差异。本发明中的牙颌模型颜色信息扫描方法利用黑白相机获取彩色图像，避免彩色相机对几何数据测量的影响；利用融合算法消除不同角度测量结果的光影差异，大大降低了设备成本。The invention discloses a color information scanning device and method for dental models. The device includes a projector, a control system and at least one black-and-white camera. The control system is connected to the projector and all the black-and-white cameras respectively. Projectors only project red, green, and blue monochromatic light. The control system controls the projector to project red, green and blue monochromatic light to the dental model, and takes pictures of the dental model at different angles under each monochromatic light; combining the photos taken at the same angle under different monochromatic lights to obtain The single-piece data of the angled mandibular model; the color information on the single-piece data of different angles is fused to eliminate the difference in light and shadow caused by directional light. The color information scanning method of the tooth and jaw model in the present invention uses a black-and-white camera to obtain color images, avoiding the influence of the color camera on geometric data measurement; using a fusion algorithm to eliminate light and shadow differences in measurement results from different angles, greatly reducing equipment costs.
Description
Technical field
The present invention relates to a kind of colouring information scanning means for dentognathic model and method, particularly relate to a kind of scan method that only can obtain the dentognathic model colouring information eliminating shadow difference with projector and black and white camera.
Background technology
The colouring information of dentognathic model or texture information are important auxiliary information in digitized dentures repai, for instance the notes that doctor stays on tooth jaw plaster model. Tradition generally utilizes the shooting of high-resolution video camera to carry out for the color record of dentognathic model, along with optical measurement, computer vision, three-dimensional geometry treatment technology development, utilize the three-dimension curved surface information that 3-D scanning obtains dentognathic model to become the main way of the design of shape in Dental Erosion. 3-D scanning is to integrate light, mechanical, electrical and computer technology new and high technology, is mainly used in scanned object spatial shape and structure, to obtain the space coordinates of this body surface. Utilize spatial digitizer (3DScanner) prepared by 3-D scanning technology as a kind of quickly measurement in space equipment, because of advantages such as its measuring speed are fast, precision is high, noncontact, easy to use, and become the important tool modeled by object dimensional, increasingly it is widely applied.
General spatial digitizer adopts projection striped to body surface, then with black and white collected by camera image, by calculating the striped deformation at body surface, thus the object three-dimensional contour outline information obtained. Reality requiring, the object measured is colored mostly, such as the historical relic of some colours, does not require nothing more than the three-D profile information that can accurately obtain object, and wish to retain real as far as possible surface color texture information.
The method of existing acquisition color texture has two kinds: a kind of is that the camera of general spatial digitizer is changed into color camera, so can increase noise so that data quality-degradation. The way of another kind of acquisition colour information is, by adds additional a color camera on general scanner, such as slr camera. So ensure profile information and good color and vein effect, but, but add many costs.Therefore, it is necessary to provide a kind of scan method that black and white camera can be used to obtain dentognathic model colouring information, the problem relatively costly to solve existing color three dimension scanner.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of cost is low, effect is good for the colouring information scanning means of dentognathic model and method.
The present invention is achieved in that
A kind of colouring information scanning means for dentognathic model, including projector, control system and at least one black and white camera, control system is connected respectively with above-mentioned projector, all black and white cameras, and described projector only projects three kinds of monochromatic light of red, green, blue.
Apply the method that this device carries out dentognathic model colouring information scanning, comprise the steps:
1) control system and control projector to the one in dentognathic model projection red, green, blue monochromatic light, all adopt black and white camera to shoot dentognathic model photo from different perspectives under every kind of monochromatic light, and transmit to controlling system;
2) using dentognathic model in same angle shot: the gray value of the image gathered under red light is as the value of red channel, the gray value of the image gathered under green light is as the value of green channel, the gray value of the image gathered under blue light, as the value of blue channel, combines three-channel value and obtains the monolithic data of dentognathic model under this shooting angle;
3) colouring information on the monolithic data of different angles is merged, eliminate the shadow difference that direction light causes.
In technique scheme, described step 1) in a black and white camera can be adopted to shoot dentognathic model photo from different perspectives; Or adopt black and white camera that multiple stage is distributed in around dentognathic model different angles shooting dentognathic model photo simultaneously respectively.
Described step 3) specific as follows: utilize geometry stitching algorithm that multislice data is carried out split, build space octree structure, calculate the color distortion attribute information on summit in the structure shown here, Poisson's equation is utilized to solve differential diffusion scalar field, different information is counter the most at last is added in monolithic color data, realize the transition of border color difference, eliminate the shadow difference between different monolithic data, it is thus achieved that the color after fusion.
Compared with prior art, technical scheme, by obtaining image when scanned object is projected by red, green, blue three coloured light respectively only with black and white camera, the coloured image of scanned object can be obtained, greatly reduce equipment cost.
Accompanying drawing explanation
Fig. 1 is the part-structure schematic diagram of apparatus of the present invention;
Fig. 2 is the design sketch before and after dentognathic model color blend.
Detailed description of the invention
Below based on accompanying drawing, specific embodiments of the invention are further elaborated. Should be appreciated that specific embodiment described herein is as just embodiment, the protection domain being not intended to limit the present invention.
As it is shown in figure 1, the colouring information scanning means for dentognathic model of the present embodiment includes control system, scialyscope 101, two black and white cameras 102, and target dentognathic model 103.
Described projector 101 can project three kinds of monochromatic light of red, green, blue to scanned tooth jaw 103, and described monochromatic light is structured light. Described black and white camera 102 includes black and white photo-sensitive cell, and described photo-sensitive cell can be Charge Coupled Device (CCD), it is possible to for complementary metal oxide semiconductors (CMOS) (COMS) photo-sensitive cell. When described projector 101 projects every kind of monochromatic light to scanned object 103, black and white camera 102 shoots multiple images of scanned object 103 from different perspectives respectively.The gray value value as red channel of the image that red light collects is thrown using projector 101, throw the gray value value as green channel of the image that green light collects, to throw the gray value value as blue channel of the image that blue light collects, complete coloured image is obtained, thus obtaining the coloured image of scanned object 103 different angles by the triple channel value combined. Then, the stereo colour model of scanned object 103 can be reconstructed by computer multi-vision visual image-forming principle according to the coloured image of the multiple angle of described scanned object.
Application said apparatus carries out the method for dentognathic model colouring information scanning and comprises the following steps:
1). adopt projector 101 to project red light to scanned object 103, adopt a black and white camera 102 to shoot multiple images of scanned object 103 respectively from multiple angles;
Adopt projector 101 to project green light to scanned object 103, adopt a black and white camera 102 to shoot multiple images of scanned object 103 respectively from above-mentioned each angle;
Adopt projector 101 to project blue light to scanned object 103, adopt a black and white camera 102 to shoot multiple images of scanned object 103 respectively from above-mentioned each angle;
When described projector 101 projects every kind of monochromatic light to scanned object 103, it is possible to adopt a black and white camera 102 after the image of an angle shot scanned object 103, move again to the image of another or multiple angle shot scanned object 103. When described projector projects every kind of monochromatic light to 101 scanned objects 103, it would however also be possible to employ multiple black and white cameras 102 shoot the image of scanned object 103 from multiple angles simultaneously.
2). for the photo under three kinds of light of each angle, the gray value value as red channel of the image that red light collects is thrown using projector 101, throw the gray value value as green channel of the image that green light collects, to throw the gray value value as blue channel of the image that blue light collects, the triple channel value combined obtain the monolithic data under respective angles.
3). the colouring information on the monolithic data of different angles is merged, eliminates the shadow difference that direction light causes. The coloured image of more than 103 angle of described scanned object is reconstructed the stereo colour model of scanned object 103: first with geometry stitching algorithm, multislice data is carried out split by computer multi-vision visual image-forming principle, build space octree structure, calculate the color distortion attribute information on summit in the structure shown here, recycling Poisson's equation solves differential diffusion scalar field, different information is counter the most at last is added in monolithic color data, realize the transition of border color difference, eliminate the shadow difference between different monolithic data, it is thus achieved that the color after fusion.
The effect of described color blend method as in figure 2 it is shown, the lines in dentognathic model include contour line, doctor's paintbrush line, shadow transition wire, by figure it can be seen that after color blend, eliminate the excessive line of shadow.
Compared with prior art, assembly of the invention and in scan method, by obtaining image when scanned object is projected by red, green, blue three coloured light respectively only with black and white camera, the coloured image of scanned object can be obtained, greatly reduce equipment cost. It addition, the color image quality obtained by the method is better, colouring information true and accurate, it is possible to obtain stereo colour model really and accurately in follow-up three-dimensional modeling.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (4)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956462A (en) * | 2018-05-15 | 2018-12-07 | 武汉科技大学 | A kind of color camera RGB image fusion vision detection system and detection method |
| JP2020150966A (en) * | 2019-03-18 | 2020-09-24 | アリッド株式会社 | Dental model and dental model virtualization method using the same |
| CN112985307A (en) * | 2021-04-13 | 2021-06-18 | 先临三维科技股份有限公司 | Three-dimensional scanner, system and three-dimensional reconstruction method |
| CN114681088A (en) * | 2020-12-31 | 2022-07-01 | 先临三维科技股份有限公司 | Three-dimensional scanning method, device, storage medium and processor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910431A (en) * | 2004-01-23 | 2007-02-07 | 奥林巴斯株式会社 | Image processing system and camera |
| US20070046663A1 (en) * | 2005-08-24 | 2007-03-01 | Hartmut Brinkmann | Method of determining the shape of a dental technology object and apparatus for per-forming the method |
| CN101288591A (en) * | 2008-05-23 | 2008-10-22 | 宁波思达利光电科技有限公司 | Device for detecting tooth geometrical shape |
| CN101785711A (en) * | 2010-01-18 | 2010-07-28 | 武汉大学 | Dental model three-dimensional measuring system and method |
| CN102331301A (en) * | 2010-07-13 | 2012-01-25 | 卡尔斯特里姆保健公司 | Teeth Shadow Mapping |
| CN102327156A (en) * | 2010-07-13 | 2012-01-25 | 卡尔斯特里姆保健公司 | Dental shade mapping |
| CN103228228A (en) * | 2010-07-12 | 2013-07-31 | 3形状股份有限公司 | 3d modeling of an object using textural features |
-
2016
- 2016-04-20 CN CN201610252097.4A patent/CN105662632A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910431A (en) * | 2004-01-23 | 2007-02-07 | 奥林巴斯株式会社 | Image processing system and camera |
| US20070046663A1 (en) * | 2005-08-24 | 2007-03-01 | Hartmut Brinkmann | Method of determining the shape of a dental technology object and apparatus for per-forming the method |
| CN101288591A (en) * | 2008-05-23 | 2008-10-22 | 宁波思达利光电科技有限公司 | Device for detecting tooth geometrical shape |
| CN101785711A (en) * | 2010-01-18 | 2010-07-28 | 武汉大学 | Dental model three-dimensional measuring system and method |
| CN103228228A (en) * | 2010-07-12 | 2013-07-31 | 3形状股份有限公司 | 3d modeling of an object using textural features |
| CN102331301A (en) * | 2010-07-13 | 2012-01-25 | 卡尔斯特里姆保健公司 | Teeth Shadow Mapping |
| CN102327156A (en) * | 2010-07-13 | 2012-01-25 | 卡尔斯特里姆保健公司 | Dental shade mapping |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956462A (en) * | 2018-05-15 | 2018-12-07 | 武汉科技大学 | A kind of color camera RGB image fusion vision detection system and detection method |
| JP2020150966A (en) * | 2019-03-18 | 2020-09-24 | アリッド株式会社 | Dental model and dental model virtualization method using the same |
| JP7178013B2 (en) | 2019-03-18 | 2022-11-25 | アリッド株式会社 | Dental model virtualization method |
| CN114681088A (en) * | 2020-12-31 | 2022-07-01 | 先临三维科技股份有限公司 | Three-dimensional scanning method, device, storage medium and processor |
| CN114681088B (en) * | 2020-12-31 | 2023-09-22 | 先临三维科技股份有限公司 | Three-dimensional scanning method, three-dimensional scanning device, storage medium and processor |
| CN112985307A (en) * | 2021-04-13 | 2021-06-18 | 先临三维科技股份有限公司 | Three-dimensional scanner, system and three-dimensional reconstruction method |
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