CN106482663A - Based on 3-D scanning rifle in the hand-held cavity of common focusing principle - Google Patents
Based on 3-D scanning rifle in the hand-held cavity of common focusing principle Download PDFInfo
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- CN106482663A CN106482663A CN201611133750.1A CN201611133750A CN106482663A CN 106482663 A CN106482663 A CN 106482663A CN 201611133750 A CN201611133750 A CN 201611133750A CN 106482663 A CN106482663 A CN 106482663A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
Abstract
The invention discloses a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Projection light source is arranged on the root of gun body and is located on gun body axis, the luminous place of projection light source is embedded with pin hole panel, half-reflecting half mirror is located between pin hole panel and lens group, cover in gun body inwall with certain angle of inclination, lens group is installed on microscope group guiding mechanism, at scanner pipette tips end, reflecting mirror is installed, mirror tilt angle degree is determined by light path axis angle, described filter is installed at scanner muzzle.The present invention obtains three-dimensional data in real time and rebuilds threedimensional model in mouth, model has higher precision level, output model can make physical model in combination with 3D printing technique, the demand that the accurate oral cavity model of doctor's quick obtaining can be met simultaneously and make physical model, can keep the confocal scanning mode that high accuracy scans to carry out optical scanning；Ensure the optics adaptability of projection module using adjustable lens group, so that the reconstruction speed of model is improved it is achieved that the real-time display function of model.
Description
Technical field
The present invention relates to field of oral cavity medical equipment, it is specifically a kind of 3-D scanning based on copolymerization Jiao's light and reconstruction
Technology.
Background technology
Take the important way that tooth mould is diagnosis and curative effect confirmation in oral medical, tooth mould is the important letter of patient's oral environment
Breath medium, especially in thread form is corrected and made with artificial tooth, doctor typically requires the tooth making some pair different times for patient
Mould, in order to diagnose and to plan or observation and treatment effect, improves the specific aim of diagnosis and treatment scheme.
Most common dentistry model taking method is using gear division Gypsum Fibrosum directly delivery in patient oral cavity now, this kind of method with
The improvement gear division gypsum material has gradually overcome the problem of shaping time and mucosa sensitization, but patient easily given by Gypsum Fibrosum delivery
Bring discomfort, be difficult to very precise restoration profile of tooth original appearance, be difficult preserve etc. defect be the insoluble problem of the method.
With the development of technology, three-dimensional thread form scanning technique gradually represents in oral medical field, its scan mode is quick,
Storage means facilitate various feature to make it receive increasing attention.Three-dimensional thread form scanning technique is divided at present sweeps outside mouth
Retouch and two types of scanning in mouth, scanning wherein outside mouth is mainly used in making tooth mould, the digital version model of artificial tooth, is to tradition system
A kind of means of supplementing out economy of mould, are limited to the precision of plaster model itself, and the error of itself in scanning process, can lead to final
Scanning result produces larger accumulated error；In mouthful, scanning is directly to be swept in patient oral cavity using the scanning device of miniaturization
Retouch the real-time model data obtaining patient oral cavity, compared with traditional delivery mode and the outer scan mode of mouth, scanning in mouth decreases
The sense of discomfort during delivery, patient being caused, model real-time reconstruction improves the accuracy and speed of delivery, saves the time simultaneously
Spillage of material and manpower consumption are greatly reduced, are that doctor provides good diagnosis and treatment reference, simultaneously because digital information is convenient
Storage mode, doctor can preferably patient's communication exchange or directly model is sent to other doctors and carrys out common diagnosis and treatment.
Abroad have begun to that scanning device in some mouths occurs at present, using mechanical arm or sensor, scanning device is carried out
Positioning, and scanning in mouth is carried out by the grating scanner with optical vibrating mirror, obtain oral cavity model.Such technology is also deposited at present
In several defects, inconvenience doctor's operation as larger in mechanical arm type scanner volume, most of scanning device needs before scanning
In oral cavity, one layer of coverture of spraying ensures scanning accuracy, and optical vibrating mirror maintainability is poor and needs and mechanical synchronization.
Structure light scan technology uses encoded visible ray optical grating projection to object surface, by analyzing projection
Picture simultaneously obtains the distance of subject surface each point thus obtaining a cloud according to principle of triangulation.This technology generally has following several
Plant limitation：Because the light of encoded light is to be formed after the grating being produced by one piece of liquid crystal board by light source, the picture of liquid crystal board
Plain density is directly determined the degree of accuracy at grating edge, and the degree of accuracy of grating only up to be accurate to the Pixel-level of liquid crystal grating
Not, it is ultimately imaged the restriction that effect also suffers from photographing module pixel simultaneously, lead to cumulative error to increase, make final result accurate
Degree is difficult to meet demand.
The ultimate principle of structure light scan technology, according to principle of triangulation, the displacement in the picture of grating every bit is changed
It is counted as range information, and sets up spatial point with reference to plane coordinates ultimately forming a cloud, this principle can be subject to image quality and take the photograph
As module pixel Effects of Density, the maximal accuracy that can reach of finding range is pel spacing in photographing module it is difficult to meet high-precision
The requirement of degree scanning.
Structure light scan technology from light source to projection, mainly realized by lens group, reflection light and projection by the adjustment of its light path
Light path of light is different, needs to rely on the mirror surface of scanning device inwall to pass image back photographing module, image is through multiple reflections
Signal attenuation can be led to, and minute surface inwall proposes further requirement to the machining accuracy of scanning device.
Because in mouth, scanning technique needs for scanning device to probe into patient's cavity interior and carries out real time scan and Model Reconstruction, because
This needs is a kind of not to be needed can the 3-D scanning technology of auxiliary material scanning and carry out high efficiency three-dimensional reconstruction with high accuracy and
Model reconstruction techniques.
Content of the invention
It is an object of the invention to here provide a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, that is,
A kind of accurately and easily oral cavity thread form 3-D scanning and rebuild solution it is intended to realize can be to oral cavity tooth without coverture
Shape is scanned and the scanner uni model reconstruction techniques according to scan data real-time reconstruction oral cavity threedimensional model.
The present invention be achieved in that construction a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its
It is characterised by：Including projection light source, pin hole panel, half-reflecting half mirror, lens group, focal-distance regulation structure, reflector layer or light-absorption layer
Gun body inwall, filter and reflecting mirror；
Described projection light source is arranged on the root of gun body and is located on gun body axis, and the luminous place of projection light source is embedded with pin hole face
Plate, half-reflecting half mirror is located between pin hole panel and lens group, covers in gun body inwall with certain angle of inclination, lens group is pacified
It is loaded on microscope group guiding mechanism, at scanner pipette tips end, reflecting mirror is installed, mirror tilt angle degree is determined by light path axis angle, sweeps
Retouch the described filter of installation at rifle muzzle.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Projection light source and pin
The light path side of hole face plate and inside gun body diagonally-installed half-reflecting half mirror.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Half-reflecting half mirror inclines
Rake angle is 45 degree.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Reflecting mirror is using complete
Mirror lens or conventional reflector minute surface.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Gun body extreme rays
The filter that exit is installed is parallel with gun body wall.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：In reflection light quilt
In the light path of half-reflecting half mirror reflection, a photographing module is installed.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Photographing module with sweep
Retouch integrated image processing module in rifle and carry out wired connection, image processing module and light source control module are integrated in scanner electricity
In the plate of road.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Projection light source is by collecting
Become the light source control module in scanner circuit board to control, and connected using wired mode, light source control module controls projection
The light-emitting mode of light source simultaneously provides power supply supply.
As the improvement of technique scheme,
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Outside scanner gun body
The handle being easy to grip is installed in portion, has driver sweep to rob the switch of work, handle should be provided with anti-slip veins on handle, and including
Portion arranges balancing weight, to keep gripping stability.
Described a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Implementation process
For：
（1）, image-acquisition phase：
After starting scanning, light source luminescent is made by the control module of projection light source, light source light produces point in the presence of micropore panel
Light, controls lens group that the point-like light that light source produces is carried out light path adjustment through half-reflecting half mirror and by microscope group adjusting module,
Obtain the focusing light of particular focal length, focus on light and reflect at scanning device minute surface inwall and project target surface through filter,
Form the reflected image with particular focal length.
Wherein, uniform light can be made to be distributed by one piece of Fresnel Lenses at the luminous place of projection light source；The mirror in exit
Face inwall can be replaced by one piece of total reflection prism to reduce loss in reflection for the light；
The part being projected in grating image light in target enters scanning device after UV, IR-C filter filtering clutter, passes through
At the half-reflecting half mirror reflecting up to of minute surface inwall and reflected, eventually enter into photographic head；
（2）, image processing stage：
Image processing module is passed to by the image that photographic head returns, the contrast improving image texture by Image semantic classification is sharp
Degree, because reflection light has identical focal length with projecting light, the light on the image that photographic head obtains and this focal length of object
Learn section, image processing module can calculate, according to this information, the structural information comprising in image, ultimately generate one and comprise distance
Matrix with elevation information；
The sectioning image matrix being in different Jiao's sections is stacked up, you can obtain the three-dimensional point information in image, to a cloud letter
Breath makes Effective judgement, abandons invalid cloud data frame, the cloud having fraction is simply rendered for preview simultaneously
Display；
（3）, model generation phase：
1）The step repeating the 1-2 stage, the point that may finally obtain complete model converges conjunction, by image processing module
Three-dimensional reconstruction algorithm cloud data is optimized and three-dimensional reconstruction, obtain the model information comprising point, line, surface, in addition
It is obtained in that surface color and the material information of object under the support of video camera and projection light source function；
2）The model of generation is carried out by volume optimization by model optimization algorithm, reduces the size of model file, ensureing model
Improve the smoothness of model on the premise of degree of accuracy, and in the presence of having object material, texturing be added on model,
Ultimately generate complete model, and export corresponding document and render simultaneously and be shown in preview.
It is an advantage of the current invention that：3-D scanning and model reconstruction techniques in the mouth based on copolymerization Jiao's light that this technology provides
3-D scanning in the mouth being capable of be not required to coverture, obtains three-dimensional data in real time and rebuilds threedimensional model in mouth, model has relatively
High precision level, output model can make physical model in combination with 3D printing technique, can meet doctor simultaneously quickly obtain
The demand taking accurate oral cavity model and making physical model, this technology use can keep the confocal scanning mode that high accuracy scans
Carry out optical scanning；Ensure the optics adaptability of projection module using adjustable lens group, by setting of the microscope group in fuselage
Meter, so that scanning device can get, in less space, the scanogram being swept object, makes device miniaturization be possibly realized；With
When pass through efficient three-dimensional reconstruction algorithm.The reconstruction speed of model is made to be improved it is achieved that the real-time display function of model.
Brief description
Fig. 1 is overview flow chart of the present invention
Fig. 2 scanner structure example figure
One feasible modifications example of Fig. 3 scanning device.
Wherein：Projection light source 1, pin hole panel 2, half-reflecting half mirror 3, lens group 4 and focal-distance regulation structure 5, reflector layer or
The gun body inwall 6 of light-absorption layer, filter 7, reflecting mirror 8, photographing module 9, image processing module 10, light source control module 11.
Specific embodiment
Below in conjunction with accompanying drawing 1-3, the present invention is described in detail, and the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of not making creative work
Every other embodiment, broadly falls into the scope of protection of the invention.
The present invention provide a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, can be as follows
Implement：
As shown in Figure 1-Figure 3：Including inside have projection light source 1, pin hole panel 2, half-reflecting half mirror 3, lens group 4, focal length adjust
The gun body inwall 6 of whole structure 5, reflector layer or light-absorption layer, filter 7 and reflecting mirror 8；The projection light source 1 of scanner is arranged on gun body
Root and be located on gun body axis, projection light source 1 place of lighting is embedded with pin hole panel 2, and ensures light source 1 and pin hole panel 2
Between do not produce light leak；Half-reflecting half mirror 3 is located between pin hole panel 2 and lens group 4, is covered in gun body with certain angle of inclination
In inwall, its angle is determined by photographing module 9 position；Lens group 4 is installed on microscope group guiding mechanism 5 so as to adjustment machine
Structure 5 is arranged on light path and is dissipated at lens 4, and one piece of completely reflecting mirror or minute surface 8 are installed in scanner pipette tips end, mirror tilt angle degree by
Light path axis angle determines, scanner muzzle installs described filter 7.
Of the present invention based on 3-D scanning rifle in the hand-held cavity of common focusing principle, projection light source 1 is embedded with one piece
Liquid crystal or pin hole panel 2 are so that be point light by the output light of panel.
Projection light source 1 and the light trackside of pin hole panel 2, diagonally-installed one piece of half-reflecting half mirror 3 inside gun body, eyeglass inclines
The angle that rake angle and reflected light path enter photographing module 9 determines, usually 45 degree.
In the scanner gun body that light passes through half-reflecting half mirror 3, one group of lens 4 and microscope group guiding mechanism 5 are installed, thoroughly
Microscope group can be made up of some lens, and for controlling light focal length, microscope group guiding mechanism 5 is used for adjusting the state of lens group 4,
Change the focal length by microscope group light.
Scanner gun body end is provided with one piece of reflecting mirror 8, and mirror tilt angle degree is determined by projecting light optical axis angle, reflection
Mirror material uses total reflection lens or conventional reflector minute surface.
Described filter 7 is installed so as to filter 7 is parallel with gun body wall in gun body extreme rays exit, is used for preventing dust
Enter scanner inside and filtering external veiling glare.
One photographing module 9 is provided with the light path that reflection light is reflected by half-reflecting half mirror 3；Photographing module 9 with sweep
Retouch integrated image processing module 10 in rifle and carry out wired connection, image processing module 10 is integrated in light source control module 11 and sweeps
Retouch in rifle circuit board.Projection light source 1 is controlled by the light source control module 11 being integrated in scanner circuit board, and adopts wired side
Formula connects, and light source control module controls light source luminescent pattern and provides power supply supply.
Outside scanner gun body, the handle being easy to grip is installed, handle has driver sweep rob the switch of work, such as pull
Machine or button, handle should be provided with anti-slip veins, and internally arranges balancing weight, to keep gripping stability.
As shown in Figure 2, scanning device is made up of a kind of feasible configurations of scanning device of the present invention following part, here again
Illustrate：
Projection light source 1, is controlled by the light source control module 11 being integrated in scanner circuit board；
Pin hole panel 2, projection light source 1 produces point source of light by micropore panel 2；
Half-reflecting half mirror 3, collecting lenses 3 are used for passing the light of scanning device back through the point source of light projecting and reflection；
Condenser lenses 4, dissipate, through condenser lenses 4, the focal length that point-like light is integrated into needs；
Microscope group adjusting module 5, can change lens 4 distance, adjustment light source and reflected light focal length by microscope group adjusting module 5；
There is the inwall 6 of extinction figure layer, in scanning device inwall, scribble the coating that can absorb diffuse-reflectance light, for reducing reflection
Diffuse-reflectance in scanning device for the light produces interference to being ultimately imaged；
Filter 7 is UV, IR-C filter, in scanning device leading portion equipped with UV, IR-C filter 7, can with filtering ultraviolet, infrared light, due to
The refractive index of infrared and ultraviolet light is different from visible ray, can produce skew, can be reduced using filter when through lens group 4；
Mirror surface 8, mirror surface 7 within scanning device, focus light onto scanned surface and will pass back in order to reflect
Image reflexes in scanning device.
Photographing module 9（Photographic head）, be arranged in the light path that reflection light is reflected by half-reflecting half mirror 3, photographing module 9 with
Integrated image processing module 10 in scanner carries out wired connection；
Image processing module 10, light source control module 11, image processing module 10 and light source control module 11 are integrated in scanner
In circuit board.
Because internal mouth environment is complicated, thread form height differs, and the high-precision requirement to model for the oral cavity diagnosis in addition is
Realize the function of real time scan in oral cavity, the solution that this technology adopts is：Projected by projection module and focus light onto mesh altogether
Mark surface, through the Focussing of lens group, electric light is accurately projected target surface, then passes through picture pick-up device object table
The confocal reflection light in face is sent to image processing module；Calculate the distance comprising in image, height through image procossing and analysis meter
Degree information, then three-dimensional reconstruction algorithm generation model is passed through by these data；Oral cavity is continuously acquired by stably mobile scanners have been
The three-dimensional information of different parts, by image study and stitching algorithm, with reference to the attitude information of scanning device（Not in fig 2
Mark）Each model piece is spliced into complete model, reaches smooth and precision optimum balance finally by model optimization.
Next by the implementation process according to technology, in conjunction with flow chart（Accompanying drawing 1）With scanner structure example（Accompanying drawing 2）Say
Solution technology implementation process：
（1）, image-acquisition phase：
After starting scanning, light source luminescent is made by the control module 11 of projection light source, light source light produces in the presence of micropore panel 2
Point light, controls lens group 4 that the point-like light that light source produces is carried out light path through half-reflecting half mirror 3 and by microscope group adjusting module 5
Adjustment, obtains the focusing light of particular focal length, focuses on light and reflects at scanning device minute surface inwall and project target through filter
Surface, forms the reflected image with particular focal length.
Wherein, uniform light can be made to be distributed by one piece of Fresnel Lenses at the luminous place of projection light source 1；The mirror in exit
Face inwall can be replaced by one piece of total reflection prism to reduce loss in reflection for the light, as shown in accompanying drawing 2, accompanying drawing 3.
The part being projected in grating image light in target enters scanning device after UV, IR-C filter 7 filtering clutter,
By at the half-reflecting half mirror reflecting up to of minute surface inwall and reflected, eventually entering into photographic head 9.
（2）, image processing stage：
Image processing module 10 is passed to by the image that photographic head 9 returns, improves the contrast of image texture by Image semantic classification
Degree acutance, because reflection light has identical focal length with projecting light, on the image that photographic head obtains and this focal length of object
Optical section, image processing module can calculate the structural information that comprises in image according to this information, ultimately generate one and comprise
Distance and the matrix of elevation information.
The sectioning image matrix being in different Jiao's sections is stacked up, you can obtain the three-dimensional point information in image（Point
Cloud）, a cloud information is made with Effective judgement, abandons invalid cloud data frame, the cloud having fraction is carried out simply simultaneously
Render and show for preview.
（3）, model generation phase：
1）The step repeating the 1-2 stage, the point that may finally obtain complete model converges conjunction, by image processing module
Three-dimensional reconstruction algorithm cloud data is optimized and three-dimensional reconstruction, obtain the model information comprising point, line, surface, in addition
It is obtained in that surface color and the material information of object under the support of video camera and projection light source function.
2）The model of generation is carried out by volume optimization by model optimization algorithm, reduces the size of model file, ensureing
Improve the smoothness of model on the premise of model accuracy, and in the presence of having object material, texturing is added to model
On, ultimately generate complete model, and export corresponding document and render simultaneously and be shown in preview.
Coded structured light or phase-shift structure light, this technology are used mostly based on the three-dimensional scanning device of raster scanning technology
There is essential distinction with the common focusing 3-D scanning that this technology is adopted.
First, imaging mode is different.Structure light scan technology uses encoded visible ray optical grating projection to object
Surface, obtains the distance of subject surface each point thus obtaining a little by analysis projected image and according to principle of triangulation
Cloud.This technology generally has following several limitation：Because the light of encoded light is to pass through, by light source, the light that one piece of liquid crystal board produces
Formed after grid, the picture element density of liquid crystal board is directly determined the degree of accuracy at grating edge, and the degree of accuracy of grating only up to
It is accurate to the pixel scale of liquid crystal grating, is ultimately imaged the restriction that effect also suffers from photographing module pixel simultaneously, lead to accumulate
Error increases, and makes final result degree of accuracy be difficult to meet demand.
Second, point cloud obtains principle difference.The ultimate principle foundation principle of triangulation of structure light scan technology, by grating
Every bit displacement in the picture is converted into range information, and sets up spatial point with reference to plane coordinates and ultimately form a cloud, and this is former
Comprehend and affected by image quality and photographing module picture element density, the maximal accuracy that can reach of finding range is in photographing module
Pel spacing is it is difficult to meet the requirement of high accuracy scanning.
Confocal scanning technology is ultimately imaged the optical section for object, reaction be object under particular depth of view side
Edge, obtains the object optical section of different depth, is finally superposed to body surface, its principle is closer to medical science by converting the depth of field
CT, due to the limitlessly detachable characteristic of optical section, the precision putting cloud can reach very high level.
Third, scanner structure is different.From light source to projection, its light path adjusts mainly by lens group structure light scan technology
Realize, reflection light is different from throw light light path, need to rely on the mirror surface of scanning device inwall to pass image back shooting mould
Block, image can lead to signal attenuation through multiple reflections, and minute surface inwall proposes to the machining accuracy of scanning device further
Requirement.
The projection light of confocal scanning technology and reflected light continue to use same set of light path, divide in optical line terminal half-reflecting half mirror
From light path, save scanning device inner space and avoided and frequently reflect the image quality loss causing, helped to maintain Gao Shui
Accurate is ultimately imaged degree of accuracy.
By this technology, it is possible to achieve easily 3-D scanning and Model Reconstruction in real-time mouth, meet dental diagnosis pair
Oral cavity modeling is accurately and fast, preservation is convenient requires, and the duplication for model simultaneously exchanges and provides good medium.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle it is characterised in that：Including projection light source（1）、
Pin hole panel（2）, half-reflecting half mirror（3）, lens group（4）, focal-distance regulation structure（5）, the gun body inwall of reflector layer or light-absorption layer
（6）, filter（7）And reflecting mirror（8）；Described projection light source（1）It is arranged on the root of gun body and be located on gun body axis, projection
Light source（1）Luminous place is embedded with pin hole panel（2）, half-reflecting half mirror（3）Positioned at pin hole panel（2）With lens group（4）Between, with one
Constant inclination rake angle covers in gun body inwall, lens group（4）It is installed on microscope group guiding mechanism（5）On, in scanner pipette tips end peace
Dress reflecting mirror（8）, mirror tilt angle degree is determined by light path axis angle, installs described filter at scanner muzzle（7）.
2. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Projection light source（1）With pin hole panel（2）Light path side and inside gun body diagonally-installed half-reflecting half mirror（3）.
3. according to claim 2 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Half-reflecting half mirror（3）Angle of inclination is 45 degree.
4. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Reflecting mirror（8）Using total reflection lens or conventional reflector minute surface.
5. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：The filter that gun body extreme rays exit is installed（7）Parallel with gun body wall.
6. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：In reflection light by half-reflecting half mirror（3）In the light path of reflection, a photographing module is installed（9）.
7. according to claim 6 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Photographing module（9）With integrated image processing module in scanner（10）Carry out wired connection, image processing module（10）With
Light source control module（11）It is integrated in scanner circuit board.
8. according to claim 7 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Projection light source（1）By the light source control module being integrated in scanner circuit board（11）Control, and using wired mode even
Connect, light source control module（11）Control projection light source（1）Light-emitting mode and power supply supply is provided.
9. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Outside scanner gun body, the handle being easy to grip is installed, handle has driver sweep rob the switch of work, handle should set
There are anti-slip veins, and balancing weight is set in handle inner and scanner tail end, to keep gripping stability.
10. according to claim 1 a kind of based on 3-D scanning rifle in the hand-held cavity of common focusing principle, its feature exists
In：Implementation process：
（1）, image-acquisition phase：
After starting scanning, by the control module of projection light source（11）Make light source luminescent, light source light is in micropore panel（2）In the presence of
Produce point light, through half-reflecting half mirror（3）And pass through microscope group adjusting module（5）Control lens group（4）The point-like that light source is produced
Light carries out light path adjustment, obtains the focusing light of particular focal length, focuses on light and reflects at scanning device minute surface inwall and pass through filter
Project target surface, form the reflected image with particular focal length；
Wherein, in projection light source（1）Luminous place can by one piece of Fresnel Lenses make uniform light be distributed；The minute surface in exit
Inwall can be replaced by one piece of total reflection prism to reduce loss in reflection for the light；
The part being projected in grating image light in target passes through UV, IR-C filter（7）Enter scanning device after filtering clutter, lead to
Cross at the half-reflecting half mirror reflecting up to of minute surface inwall and reflected, eventually enter into photographic head（9）；
（2）, image processing stage：
By photographic head（9）The image returning is passed to image processing module（10）, image texture is improved by Image semantic classification
Contrast acutance, because reflection light has identical focal length, the image of photographic head acquisition and this Jiao of object with projecting light
Away from upper optical section, image processing module can calculate, according to this information, the structural information comprising in image, ultimately generate one
Comprise the matrix of distance and elevation information；
The sectioning image matrix being in different Jiao's sections is stacked up, you can obtain the three-dimensional point information in image, to a cloud letter
Breath makes Effective judgement, abandons invalid cloud data frame, the cloud having fraction is simply rendered for preview simultaneously
Display；
（3）, model generation phase：
1）The step repeating the 1-2 stage, the point that may finally obtain complete model converges conjunction, by image processing module
Three-dimensional reconstruction algorithm cloud data is optimized and three-dimensional reconstruction, obtain the model information comprising point, line, surface, in addition
It is obtained in that surface color and the material information of object under the support of video camera and projection light source function；
2）The model of generation is carried out by volume optimization by model optimization algorithm, reduces the size of model file, ensureing model
Improve the smoothness of model on the premise of degree of accuracy, and in the presence of having object material, texturing be added on model,
Ultimately generate complete model, and export corresponding document and render simultaneously and be shown in preview.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611133750.1A CN106482663A (en) | 2016-12-10 | 2016-12-10 | Based on 3-D scanning rifle in the hand-held cavity of common focusing principle |
Applications Claiming Priority (1)
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