CN207010793U - A kind of reflection transformation intelligence imaging system - Google Patents
A kind of reflection transformation intelligence imaging system Download PDFInfo
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- CN207010793U CN207010793U CN201720463099.8U CN201720463099U CN207010793U CN 207010793 U CN207010793 U CN 207010793U CN 201720463099 U CN201720463099 U CN 201720463099U CN 207010793 U CN207010793 U CN 207010793U
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Abstract
The utility model discloses a kind of reflection transformation intelligence imaging system, belong to technical field of computer vision, the imaging system includes dome illuminating lamp and its electric lifting stand, camera and its slightly finely tunes lifting support, base, controlling machine box, computer, control program and processing software, camera is connected by the mounting groove on the thick fine setting lifting support, camera can move up and down along thick fine setting lifting support；Slide unit support is provided with base, lifting sliding table is provided with by the fixing groove of support, dome cover is connected by lifting sliding table side, shooting hole is left at the top of dome cover, dome cover inner surface has been evenly arranged tens illuminating lamps.The utility model design completes a set of reflection transformation imaging intelligent system that can automatically snap and handle image series, the overall process of one-key operation reflection transformation imaging can be realized, the program of automatic straightening reflection transformation imaging technique constant error is also included in system.
Description
Technical field
The invention belongs to technical field of computer vision, more particularly to a kind of reflection transformation intelligence imaging system.
Background technology
Reflection transformation imaging (Reflectance Transformation Imaging, abridge RTI) technology is a kind of meter
Calculation machine vision technique, it is based on digital photography and surface catoptric imaging model, the colouring information of record and processing subject and
Surface texture information.The technology by Hewlett-Packard laboratory two scientist's Tom's horse Wurz Bender (Tom
Malzbender) invented with Dan Gaierbu (Dan Gelb).Normal, the shape of body surface can be obtained using RTI technologies
And color data, so as to disclose abundant article surface vein information, operator can realize that man-machine interaction reproduces by software
Any angle incident ray is in the imaging effect of body surface, and these information are difficult to find often through traditional photography method.
Reflection transformation imaging technique is rarely employed at home, has no the domestic report for having similar sofware and hardware system.State
The commodity for automatically controlling light source and photo capture can be realized outside, are referred to as " dome light source " (Dome).They are simply used
In the automatic shooting of serial-gram needed for reflection transformation technology, efficiency, the serial-gram obtained can only be improved in photographing phase
Need to be manually entered processing software, shooting and post-processing are separately carried out, non intelligentization, and time-consuming longer.As dome light source,
There is also some defects for they：1st, dome can not be adjusted according to the height of object, or adjustable but regulation it is inconvenient, it is necessary to
It is manually implemented；2nd, need separately to control and adjust camera acquisition parameter, automaticity is low.3rd, document shows, it is external indivedual
Research institution has no the report of intrinsic normal error correction also in research and development reflection transformation automatic imaging system.Become with reflection
Changing imaging technique needs diverse location lighting on hemisphere face between camera and object, irradiates object from different perspectives,
After shooting obtains serial-gram, color, reflectivity and the normal data on object surface are calculated and handled with software, so as to
Realize the image reproduction of various modes.
The content of the invention
In view of this, present invention design completes a set of reflection transformation intelligence that can automatically snap and handle image series
Imaging system, it is possible to achieve the overall process of one-key operation reflection transformation imaging, also include in system automatic straightening reflection transformation into
As the program of technology constant error.
The present invention is solved the above problems by following technological means：
A kind of reflection transformation imaging intelligent system, including dome illuminating lamp and its electric lifting stand, camera and its thick micro-
Lifting support, base, controlling machine box, computer, control program and processing software are adjusted, passes through the peace on the thick fine setting lifting support
Tankage connects camera, and the camera can move up and down along the thick fine setting lifting support；Support is provided with the base,
Lifting sliding table is provided with by the fixing groove of support, dome cover is connected by lifting sliding table side, left at the top of the dome cover
Hole is shot, the dome cover inner surface has been evenly arranged tens illuminating lamps, the dome illuminating lamp and the lifting sliding table
Be connected with the controlling machine box, the dome illuminating lamp and its electric lifting stand, camera and its thick fine setting lifting support and
The controlling machine box are by the control program and processing software control.
Further, the dome cover is multi-layer annular iterative structure, and the dome cover is pacified by the dome connecting rod of both sides
Mounted in the side of the lifting sliding table.
Further, the side of the base is additionally provided with numerical control interface, and the numerical control interface connects controlling machine box, described
Controlling machine box are internally provided with stepper motor driver, illuminating lamp driving circuit, power supply adaptor, the stepper motor driver
Connect between the stepper motor and power supply, the illuminating lamp driving circuit is connected between lighting lamp group and power supply.
Further, the lifting sliding table is from the electronic slide unit of Sigma KOKI SGSP series, the thick fine setting lifting branch
Post is selected and comes the thick vernier focusing column of card.
Further, the control software of the computer includes lifting and reset function, the camera control face of control dome cover
Plate, light source control panel and RTI control panels.
Further, the method that the computer uses the automatic straightening of intrinsic normal error, by each pixel
Irradiation direction corrects the minimum for realizing intrinsic normal error.
A kind of reflection transformation imaging intelligent system of the present invention has the advantages that：
Present invention design completes a set of reflection transformation imaging intelligent system that can automatically snap and handle image series,
The overall process of one-key operation reflection transformation imaging can be realized, it is intrinsic also to include automatic straightening reflection transformation imaging technique in system
The program of error.
A kind of reflection transformation imaging intelligent system provided by the invention has following technical characterstic：1st, the profile of dome light source
Overlap and design for multi-layer annular, save the raw material and process of overall processing hemisphere；2nd, the side of reflection transformation image is automatically obtained
Method (including soft and hardware)；3rd, the method and software program of the automatic straightening of intrinsic normal error.Intrinsic normal error is digital reflex
Imaging technique caused normal calculation error in itself is converted, because every photo only has an irradiation direction, this irradiation side
To the normal vector for calculating each pixel in photo, but photo has certain area, the actual spoke of the pixel of diverse location
Deviate from this shared irradiation direction according to direction, thus caused by normal error, for light away from nearer, this error is bigger.Having
The light of limit carries out the best approach that error correction is minimum error away from the range of, using software, and the present invention is by each picture
The minimum of intrinsic normal error is realized in irradiation direction correction on element.
Therefore, the invention has the advantages that and effect：1st, the design is greatly improved with reflection transformation imaging technique
Operating efficiency；2nd, automaticity is high, and easy to use, easy to spread, user of service is not required to possess computer vision, digital picture
The professional knowledges such as processing；3rd, the automatic straightening program of intrinsic normal error, miss the normal data of the reflection transformation image of acquisition
Difference minimizes, and improves the accuracy of normal data；4th, light-source system can be flexibly controlled, selects any one lamp or multiple lamps,
Realize a variety of different light positions and light efficiency；5th, the design of dome multi-layer annular overlapping, the original of direct overall processing hemisphere is saved
Material and process.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of reflection transformation intelligence imaging system of the present invention；
Fig. 2 is a kind of front view of reflection transformation intelligence imaging system of the present invention；
Fig. 3 is a kind of side view of reflection transformation intelligence imaging system of the present invention；
Fig. 4 is a kind of flexion-extension view of reflection transformation intelligence imaging system of the present invention；
Fig. 5 is a kind of top view of reflection transformation intelligence imaging system of the present invention；
Fig. 6 is a kind of flow chart of reflection transformation imaging intelligent system of the present invention
Fig. 7 is a kind of computer control system interface of reflection transformation imaging intelligent system body of the present invention.
Wherein, 1- slide units frame, 2- dome lampshades, 3- lifting sliding tables, 4- cameras, 5- bases, 6- vernier knobs, 7- coarse adjustment rotation
Button, 8- supports, 9- numerical control interfaces, 10- camera connecting rods, 11- dome connecting rods, 12-LED lamps.
Embodiment
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.Art
Language " first ", " second " are only used for describing purpose, and it is not intended that instruction or implying relative importance or implicit indicating institute
The quantity of the technical characteristic of instruction.Thus, " first " is defined, one can be expressed or be implicitly included to the feature of " second "
Or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
Below with reference to accompanying drawing, the present invention is described in detail.
As shown in Figure 1,2,3, 4, a kind of reflection transformation imaging intelligent system, including base 5 and it is arranged on the base 5
On support 8, be provided with slide rail and mounting groove on the support 8, being connected with by the slide rail on support 8 and mounting groove can be with
The thick fine setting lifting support (6,7) moved up and down along support 8, one end of the thick fine setting lifting support (6,7) are fixed with camera
4；Electric lifting stand 1 is provided with the base 5, the side of the electric lifting stand 1 is provided with ascending, descending rack rails and fixation
Groove, lifting sliding table 3 is provided with by the fixing groove of electric lifting stand 1, in the rotating shaft of the inside stepper motor of lifting sliding table 3
The gear with ascending, descending rack rails cooperating is provided with, the lifting sliding table 3 is also connected with being provided with dome close to the side of support 8
Shooting hole is left at cover 2, the top of dome cover 2, and the inner surface of dome cover 2 has been evenly arranged illuminating lamp 12, illuminating lamp 12
Layout is as shown in Figure 4.
It is specific as shown in figure 5, the dome cover 2 is multi-layer annular iterative structure, the dome cover 2 by both sides dome
Connecting rod 11 is arranged on the side of the lifting sliding table 3.
Specifically, the thick fine setting lifting support (6,7) is provided at both ends with vernier knob and coarse adjustment knob, the fine setting
One end of knob is provided with vernier knob gear, and one end of the coarse adjustment knob is provided with coarse adjustment knob gear, the fine setting rotation
The rack rails cooperating of button gear, coarse adjustment knob gear with being set inside slide rail；The thick fine setting lifting support (6,7) and phase
Level camera connecting rod 10 is provided between machine 4.
As shown in Figure 1, 2, 3, the side of the base is additionally provided with numerical control interface, and the numerical control interface connects control machine
Case, the controlling machine box are internally provided with stepper motor driver, illuminating lamp driving circuit, power supply adaptor, the stepping electricity
Machine driver is connected between the stepper motor and power supply, the illuminating lamp driving circuit be connected to lighting lamp group and power supply it
Between.Specific connected mode is that a LED drive circuit is connected per LEDs, and all LED and LED driver form a LED
Group, LED light group drive circuit are attached thereto, and LED can select Puri 45mil types LED, LED drive circuit to select
Array scanning mode can be selected in AMC7135 type constant-flow drivers, LED light group drive circuit, and universal serial bus addressing side also can be selected
Formula.
Specifically, the lifting sliding table is from the electronic slide unit of Sigma KOKI SGSP series, the thick fine setting lifting support
From coming the thick vernier focusing column of card.It should be noted that can flexibly be selected according to actual conditions stepper motor driver,
LED drive circuit and LED light group drive circuit, specific LED can select Puri 45mil types LED, LED drive circuit can be with
From AMC7135 type constant-flow drivers, array scanning mode can be selected in LED light group drive circuit, and universal serial bus also can be selected and seek
Location mode.The stepper motor driver can select TB6600 type motor drivers, and LED drive circuit can also select OP-
QD3WLED-C type constant-flow drivers, while matching RXM2AB2F7 type LED relays can also be selected according to actual conditions.
As described in Figure 1, system also includes computer, and the computer is connected by USB interface and the camera 4 and controlling machine box
Connect.Specifically, the control software of the computer includes lifting and reset function, the control panel of camera 4, the light of control dome cover 2
Source control panel and RTI control panels, as shown in Figure 6.Specifically, the computer is using the automatic straightening of intrinsic normal error
Method, by realizing the minimum of intrinsic normal error to the irradiation direction correction in each pixel, the present invention uses control journey
Sequence it is as follows：
Software program controls camera and dome light source, is automatically performed RTI shooting and calculating process.Camera uses Canon
EOS slr cameras, the SDK control cameras provided using official of Canon in shooting process, user carry out camera by user interface
The operation such as many kinds of parameters adjustment and shooting.The open and close controlling of the illuminating lamp of numerous fixed positions on dome light source, brightness adjustment
With the elevating control of dome cover etc. carried out by USB HID protocols.
The processing software package of reflection transformation imaging intelligent system includes：
1. camera parameter is set
Before RTI shootings are started, user can by mutual interface to camera parameter, software by Canon SDK according to
Family demand configuration camera many kinds of parameters.
2. RTI options are set
RTI algorithms and various modes are set.
3. select one group of light position
Numerous lamp positions are set in dome light source, a variety of light position templates of Software for Design select for user, fixed in these light position templates
Several lamp positions of justice, will automatically light and close during shooting selected by lamp position in template.User can be edited with oneself, be newly-built
Light position template, increases, deletes lamp position as needed.
4. obtain a lamp position
The information of a lamp position is obtained from the light position template of user's selection.
5. light the lamp position
Software is sent to dome light source by USB HID protocols and ordered, and the lamp position is lighted in order.
6. take pictures
Software controls Canon camera shutter to be opened and closed by Canon SDK, and storage image is to the engineering catalogue specified.
7. automatic screening image
Software enters automatic screening to a series of images of shooting in the link, and can be rejected by the screening influences RTI meters
The such image calculated.It is broadly divided into following two subring sections：
1. the subring root section carries out registration according to the characteristic point in image to image, non-registered figure caused by a variety of causes is removed
Picture.
2. the subring root section is screened according to image entirety, local luminance, remove under-exposed and projection and covers master shot
The image of body.
Each subring section is optional in the link, and user can be enabled in the preference of software, be disabled.
8. generate lp files
Light position template of the software according to user's selection, the irradiation vector of each lamp position is calculated, generates lp files.In generation lp
Before file, user can select to browse the image of shooting, and remove certain or partly shoot undesirable image, or extensive
The image rejected by mistake in a multiple upper link.The image of removal will be not added to lp files, and then be not involved in RTI calculating, make RTI
The optimal shooting effect of acquisition.
9.RTI is calculated
The RTI options specified according to lp files and user carry out RTI calculating.
The intrinsic normal error correction of the present invention comprises the following steps：Original RTI shooting process utilizes dome light source, it is known that
The lamp position coordinate (vector to the dome centre of sphere irradiates vector) of dome light source, use up position (lightposition, abridge lp) text
Part stores irradiation vector information, and lp files finally are formed into RTI to calculate.RTI describes image with a hemispherical harmonics
In the relation of each pixel intensity and irradiation direction, be designated as ln=f (lun,lvn), be referred to as the pixel reflection model, RTI
Core algorithm be HSHfitter.
f(lu1,lv1)=l1
f(lu2,lv2)=l2
f(lun,lvn)=ln
Wherein, error source includes following content：Intrinsic normal error refers to that reflection transformation imaging technique is caused in itself
Normal calculation error.Because there was only a light position for a photo, in photo each pixel using it is same irradiate to
Measure the calculating that reflection model is carried out as input.If using directional light as the light source of shooting, the irradiation of each pixel in image
Direction is consistent with the irradiation direction of photograph.In practical application, the source of parallel light of larger area is difficult to obtain, the shooting of RTI technologies
Usually using spot light.When using spot light, the actual irradiation direction of each pixel is not one to distance on image
Dome center is more remote, and deviation is bigger, therefore the reflection model calculated is that have error, causes the error of method line computation immediately.
Limited light carries out the best approach that error correction is minimum error away from the range of, using software, and the present invention is by each
The minimum of intrinsic normal error is realized in irradiation direction correction in pixel.
Correcting principle includes following content：By obtaining the true irradiation direction of each pixel, reflection mould can be reduced
Error originated from input when type calculates.Try to achieve each pixel and truly irradiate vector, it is necessary to which known pixels length is into real world
Ratio s, and the radius r of dome light source.
Remember that light position coordinate is (Xn,Yn,Zn), tried to achieve by formula (1)
It is (u, v) to remember pixel coordinate to be asked, and the coordinate of dome center in the picture is (u0,v0), pixel to be asked is in true generation
Coordinate is (x in boundary(u,v),y(u,v),z(u,V)), tried to achieve by formula (2)
The true irradiation vector for remembering pixel to be asked isTried to achieve by formula (3)
It should be noted that the function of the control panel of camera 4 includes：
1. the setting of the parameters such as the aperture of pair camera 4, shutter, sensitivity and picture quality；
2. the EVF functions of camera 4 are opened, close, in the image of user interface live preview camera 4；
3. pass through mouse scaling, the dragging preview screen of camera 4 under EVF patterns；
4. control camera 4 takes pictures image store in the position that user sets.
Wherein, the function of light source control panel includes：
1. opening, closing single or multiple LED12 in dome light source, and specific light position and lamp are shown in the user interface
Number；
2. annular freely adjustable in the range of certain angle is realized by the lifting for lighting multiple LED12 and dome
Light, sidelight and area source；
3. controlling dome to adjust up and down, initial position, normal place are revert to.
Further, the function of reflection transformation imaging control panel：
1. editor, the lamp position data for preserving, opening RTI shootings；
2. establishing RTI item files, RTI shooting and processing are automatically performed；
3. opening existing RTI files, continue operation to unfinished RTI projects or completed RTI projects are carried out
Operate again.
Specifically, Add-ons plug-in unit includes following function：
1. dome light source automatic lifting and reset plug-in unit
2.RTI live previews plug-in unit (live preview subject normal data)
3.RTI analysis plug-in units (reflectance analysis, 3D reconstructions, height/depth analysis etc.)
4. intrinsic normal error correction plug-in unit (correcting normal error caused by each pixel glazing position deviation)
A kind of reflection transformation imaging intelligent system of the present invention has the advantages that：
Present invention design completes a set of reflection transformation imaging intelligent system that can automatically snap and handle image series,
The overall process of one-key operation reflection transformation imaging can be realized, it is intrinsic also to include automatic straightening reflection transformation imaging technique in system
The program of error.A kind of reflection transformation imaging intelligent system provided by the invention has following technical characterstic：1st, dome light source
Profile is multi-layer annular overlapping design, saves the raw material and process of overall processing hemisphere；2nd, reflection transformation image is automatically obtained
Method (including soft and hardware)；3rd, the method and software program of the automatic straightening of intrinsic normal error.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a kind of reflection transformation imaging intelligent system, it is characterised in that including dome illuminating lamp and its electric lifting stand, camera
And its lifting support, base, controlling machine box, computer, control program and processing software are slightly finely tuned, pass through the thick fine setting lifting branch
Mounting groove connection camera on post, the camera can move up and down along the thick fine setting lifting support；Set on the base
There is support, lifting sliding table is provided with by the fixing groove of support, dome cover, the dome cover top are connected by lifting sliding table side
Portion leaves shooting hole, and the dome cover inner surface has been evenly arranged tens illuminating lamps, the dome illuminating lamp and the liter
Drop slide unit is connected with the controlling machine box, the dome illuminating lamp and its electric lifting stand, camera and its thick fine setting lifting
Support and the controlling machine box control by the control program and processing software.
2. reflection transformation imaging intelligent system according to claim 1, it is characterised in that the dome cover is multi-layer annular
Iterative structure, the dome cover are arranged on the side of the lifting sliding table by the dome connecting rod of both sides.
3. reflection transformation imaging intelligent system according to claim 1, it is characterised in that the side of the base is also set up
There is numerical control interface, the numerical control interface connects controlling machine box, and the controlling machine box are internally provided with stepper motor driver, illumination
Lamp drive circuit, power supply adaptor, the stepper motor driver are connected between the stepper motor and power supply, the illuminating lamp
Drive circuit is connected between lighting lamp group and power supply.
4. reflection transformation imaging intelligent system according to claim 1, it is characterised in that the lifting sliding table is selected
The electronic slide unit of Sigma KOKI SGSP series, the thick fine setting lifting support, which is selected, comes the thick vernier focusing column of card.
5. reflection transformation imaging intelligent system according to claim 1, it is characterised in that the control software bag of the computer
Include lifting and reset function, camera control panel, light source control panel and the RTI control panels of control dome cover.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810327A (en) * | 2017-04-28 | 2018-11-13 | 南京易纹兴智能科技有限公司 | A kind of reflection transformation intelligence imaging system |
| CN109632088A (en) * | 2019-01-17 | 2019-04-16 | 南京易纹兴智能科技有限公司 | A kind of automatic control system of multiple light courcess luminance detection and correction |
| CN111006615A (en) * | 2019-10-30 | 2020-04-14 | 浙江大学 | Flat surface feature scanning imaging device and method |
-
2017
- 2017-04-28 CN CN201720463099.8U patent/CN207010793U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810327A (en) * | 2017-04-28 | 2018-11-13 | 南京易纹兴智能科技有限公司 | A kind of reflection transformation intelligence imaging system |
| CN108810327B (en) * | 2017-04-28 | 2023-10-17 | 南京易纹兴智能科技有限公司 | Reflection transformation intelligent imaging system |
| CN109632088A (en) * | 2019-01-17 | 2019-04-16 | 南京易纹兴智能科技有限公司 | A kind of automatic control system of multiple light courcess luminance detection and correction |
| CN109632088B (en) * | 2019-01-17 | 2024-02-02 | 南京易纹兴智能科技有限公司 | Automatic control system for detecting and correcting illuminance of multiple light sources |
| CN111006615A (en) * | 2019-10-30 | 2020-04-14 | 浙江大学 | Flat surface feature scanning imaging device and method |
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