CN102506726B - Portable three-dimensional reconstruction data acquisition system - Google Patents
Portable three-dimensional reconstruction data acquisition system Download PDFInfo
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- CN102506726B CN102506726B CN201110352743.1A CN201110352743A CN102506726B CN 102506726 B CN102506726 B CN 102506726B CN 201110352743 A CN201110352743 A CN 201110352743A CN 102506726 B CN102506726 B CN 102506726B
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Abstract
The invention discloses a portable three-dimensional reconstruction data acquisition system, which comprises a grating interference source and an image acquisition instrument. A grating interference source control circuit comprises a first singlechip, wherein the first singlechip is connected to a first stepping motor driving module through photoelectric isolation to drive a first stepping motor to finish rear focusing control on the grating interference source, is connected to a third stepping motor driving module through photoelectric isolation to drive a third stepping motor to finish rotating control on a grating piece of the grating interference source, and is connected to a fourth stepping motor driving module through photoelectric isolation to drive a fourth stepping motor to finish switching control on a light knife of the grating interference source; the light knife is used for shielding light rays in the grating interference source in the portable three-dimensional reconstruction data acquisition system; and a first magnetic grating ruler is connected to the singlechip through photoelectric isolation and is used for measuring rear focusing displacement of the grating interference source. A portable hardware technical scheme is provided for a passive three-dimensional image data reconstruction system.
Description
Technical field
The invention belongs to technical field of image information processing, relate in particular to a kind of Portable three-dimensional reconstruction data acquisition system.
Background technology
At application number, be " 201010537914.4 ", name is called in the Chinese invention patent application file of " a kind of portable image hologram three-dimensional reconstructing system ", a kind of portable image hologram three-dimensional reconstructing system is disclosed, the three-dimensional measuring apparatus that comprises a control software control, described three-dimensional measuring apparatus comprises a grating correlator and an information acquisition device, and described grating correlator is by light source bus, grating assembly, the first servodrive assembly and the first electric platform form, and described information acquisition device is by imaging system, the second servodrive assembly and the second electric platform form, and described three-dimensional reconstruction system also comprises a software for calculation, and this software for calculation comprises image processing module, vector processing module, 3D processing module and three-dimensional reconstruction module, wherein image processing module has rim detection, flex point detects, image base conditioning and image vector function, vector processing module has vector and processes, once calibrate and secondary scaling function, 3D processing module has three-dimensional basic edit, curve processing, point cloud turns curved surface, curved surface is processed, create 3D solid and three-dimensional statistical function, described three-dimensional reconstruction module has the projection of H face, picture plane projection, Stereo matching, model veneer and Model Reconstruction function.This application discloses complete system and has solved technical scheme, but because hard-wired scheme is relatively numerous and diverse, equipment volume and cost are higher, cause this three-dimensional reconstruction system, especially the system of passive type is not good with operability on cost, is unfavorable for promoting the use of of technology.
Summary of the invention
The object of this invention is to provide a kind of Portable three-dimensional reconstruction data acquisition system, for application number, be " 201010537914.4 ", the hardware that name is called disclosed a kind of portable image hologram three-dimensional reconstructing system in the Chinese invention patent application file of " a kind of portable image hologram three-dimensional reconstructing system " forms provides a kind of improved technical scheme.
Technical scheme of the present invention is, a kind of Portable three-dimensional reconstruction data acquisition system, comprise grating interference source and Image Acquisition instrument, grating interference source control circuit comprises the first single-chip microcomputer, focus control after photoelectricity isolation is linked the first stepping motor drive module and driven the first stepper motor to complete grating interference source, through photoelectricity isolation, linking the 3rd stepper motor driver module drives the 3rd stepper motor to complete the rotation control to the lenticular lenses in grating interference source, through photoelectricity isolation, linking the 4th stepper motor driver module drives the 4th stepper motor to complete the switch control to the finishing tool in grating interference source, described finishing tool is used for playing the bridging effect to light in grating interference source at described Portable three-dimensional reconstruction data acquisition system,
The first magnetic railings ruler, the first photoelectric sensor, the first limit switch and the first approach switch are linked the first single-chip microcomputer through photoelectricity isolation, the first magnetic railings ruler is for measuring the rear focusing displacement in grating interference source, the first photoelectric sensor, the first limit switch and the first approach switch are for playing the role of positioning to the stroke of walking about of the first stepper motor, the 3rd approach switch is for playing the role of positioning to the stroke of walking about of the 3rd stepper motor, the 4th approach switch is for playing the role of positioning to the stroke of walking about of the 4th stepper motor
The first displacement transducer, second displacement sensor, the first angular transducer and the second angular transducer are linked the first single-chip microcomputer through analog-to-digital conversion module, the first displacement transducer is for measuring the prefocusing displacement in grating interference source, the mechanical arm that second displacement sensor obtains instrument for measurement image extends displacement, the first angular transducer obtains the backspin angle of the mechanical arm of instrument for measurement image, the second angular transducer obtains the upper swing angle degree of the mechanical arm of instrument for measurement image, described Portable three-dimensional reconstruction data acquisition system is determined the locus of Image Acquisition instrument by the first angular transducer and the second angular transducer and second displacement sensor,
The first single-chip microcomputer connects controls lighting control module and modeling lamp control module, and the first single-chip microcomputer is connected with communication module;
Image Acquisition instrument control circuit comprises second singlechip, focus control after photoelectricity isolation is linked the second stepping motor drive module and driven the adjustment of the second stepper motor by the displacement of logarithmic code back to complete Image Acquisition instrument,
The second magnetic railings ruler, the second photoelectric sensor, the second limit switch and the second approach switch are linked second singlechip through photoelectricity isolation, the second magnetic railings ruler obtains the rear focusing displacement of instrument for measurement image, the second photoelectric sensor, the second limit switch and the second approach switch are for playing the role of positioning to the stroke of walking about of the second stepper motor
Second singlechip is linked DIGITAL-MODUL-R trigger control module, and second singlechip is linked electroshutter control module, controls shutter and the aperture of the camera of Image Acquisition instrument,
The mechanical arm of Image Acquisition instrument adopts mechanical handle manual adjusting style.
Further, the first stepper motor, the second stepper motor, the 3rd stepper motor and the 4th stepper motor are selected 42 motors, and step angle is 1.8 degree, operate in segmentation 1/8 state, to reduce vibrations.
Further, described analog-to-digital conversion module adopts the anti-jamming circuit of at least 12 precision, makes the composite error of prefocusing and rear focusing in 0.1mm.
Further, also comprise a host computer operation interface, in order to input corresponding parameter.
Further, the integrated stepper motor driving chip of the first stepping motor drive module, the second stepping motor drive module, the 3rd stepper motor driver module and the 4th stepper motor driver module has synchronizing, partly step, 1/4th segmentations, 1/8th are segmented optional, meet the requirement to speed, precision under different situations, and it is controlled to have rotating.
In three-dimensional reconstruction equipment provided by the invention, the routing motion of interference source and Image Acquisition instrument is controlled and corresponding Circuits System, reduces system each several part cable and connects, the control section volume of optimizing hardware, make the high precision of whole hardware system, stable, efficient lower operation.The hardware system that the present invention is directed to three-dimensional reconstruction provides a kind of portability technology groups to become standard, for passive type three-dimensional reconstruction system, has reduced technical research and the use cost of existing hardware equipment, for basis has been set up in the penetration and promotion of this kind of technology.
Accompanying drawing explanation
Fig. 1 is grating interference source control circuit block diagram in system of the present invention
Fig. 2 is Image Acquisition instrument control circuit block diagram processed in system of the present invention
Embodiment
As shown in Figure 1, grating interference source control circuit comprises the first single-chip microcomputer, focus control after photoelectricity isolation is linked the first stepping motor drive module and driven the first stepper motor to complete grating interference source, through photoelectricity isolation, linking the 3rd stepper motor driver module drives the 3rd stepper motor to complete the rotation control to the lenticular lenses in grating interference source, through photoelectricity isolation, linking the 4th stepper motor driver module drives the 4th stepper motor to complete the switch control to the finishing tool in grating interference source, described finishing tool is used for playing the bridging effect to light in grating interference source at described Portable three-dimensional reconstruction data acquisition system,
The first magnetic railings ruler, the first photoelectric sensor, the first limit switch and the first approach switch are linked the first single-chip microcomputer through photoelectricity isolation, the first magnetic railings ruler is for measuring the rear focusing displacement in grating interference source, the first photoelectric sensor, the first limit switch and the first approach switch are for playing the role of positioning to the stroke of walking about of the first stepper motor, the 3rd approach switch is for playing the role of positioning to the stroke of walking about of the 3rd stepper motor, the 4th approach switch is for playing the role of positioning to the stroke of walking about of the 4th stepper motor
The first displacement transducer, second displacement sensor, the first angular transducer and the second angular transducer are linked the first single-chip microcomputer through analog-to-digital conversion module, the first displacement transducer is for measuring the prefocusing displacement in grating interference source, the mechanical arm that second displacement sensor obtains instrument for measurement image extends displacement, the first angular transducer obtains the backspin angle of the mechanical arm of instrument for measurement image, the second angular transducer obtains the upper swing angle degree of the mechanical arm of instrument for measurement image, described Portable three-dimensional reconstruction data acquisition system is determined the locus of Image Acquisition instrument by the first angular transducer and the second angular transducer and second displacement sensor,
The first single-chip microcomputer connects controls lighting control module and modeling lamp control module, and the first single-chip microcomputer is connected with communication module.
As shown in Figure 2, Image Acquisition instrument control circuit comprises second singlechip, focus control after photoelectricity isolation is linked the second stepping motor drive module and driven the adjustment of the second stepper motor by the displacement of logarithmic code back to complete Image Acquisition instrument,
The second magnetic railings ruler, the second photoelectric sensor, the second limit switch and the second approach switch are linked second singlechip through photoelectricity isolation, the second magnetic railings ruler obtains the rear focusing displacement of instrument for measurement image, the second photoelectric sensor, the second limit switch and the second approach switch are for playing the role of positioning to the stroke of walking about of the second stepper motor
Second singlechip is linked DIGITAL-MODUL-R trigger control module, and second singlechip is linked electroshutter control module, controls shutter and the aperture of the camera of Image Acquisition instrument,
The mechanical arm of Image Acquisition instrument adopts manual adjusting style.
Single-chip computer control system is very common in daily life, but system is all according to special object or object Team-development, has directive property.Though and the sliceable circuit of realizing of circuit module is on the market controlled function, spliced overall hardware system is huge loaded down with trivial details, such as stepper motor driver, electroshutter controller etc., is unfavorable for producing and machinery assembling, also misfits with the portable feature of product.
In enforcement, whole hardware circuit mainly comprises by power controling box, interferes source control panel, the making sheet of Image Acquisition instrument control, and stepper motor, sensor forms.Coordinate in addition transmission cable, the related accessory such as interface card link together.
Power controling box: mainly by Switching Power Supply, solid-state relay and Metal halogen lamp accessory (ballast resistor, trigger) form.Major function is to provide the required 12V direct supply of circuit board, interferes the startup instant high-voltage of source 220V power supply and Metal halogen lamp.
Interference source control panel, Image Acquisition instrument control making sheet: as the chief component of hardware system, work quality directly has influence on the stability of control system.
Interference source control panel and the making sheet of Image Acquisition instrument control are unanimous on the whole, and just some function is a bit different, and circuit board shape differs larger.Mainly by 5V power supply, singlechip chip, photoelectricity isolation, AD conversion and stepper motor drive chip to form.
Stepper motor: as the power resources of whole hardware system, require very high to its serviceability.
The major parameter of stepper motor is divided into two parts, and a part is physical dimension; A part is performance parameter in addition, comprises the number of phases, step angle, operation distance frequency characteristic etc.Cooperative mechanical volume requirement is selected 42 motors, and step angle is 1.8 degree, operates in segmentation 1/8 state, reduces vibrations.
Sensor: mechanical part some parameters in motion process are provided, or position relationship.Comprising photoelectric sensor, approach switch, limit switch, displacement transducer, magnetic railings ruler, angular transducer.
Photoelectric sensor, approach switch and limit switch all play the role of positioning to the stepper motor stroke of walking about, and because its each position is different, select without type.Displacement transducer is used for measuring interference source prefocusing displacement and mechanical arm extends displacement, magnetic railings ruler is for measuring the rear focusing displacement of interference source and Image Acquisition instrument, because of prefocusing and rear focusing higher to the accuracy requirement of displacement, high-precision displacement transducer and magnetic railings ruler have been selected, coordinate the AD conversion anti-jamming circuit of 12, make the composite error of prefocusing and rear focusing in 0.1mm. angular transducer is for backspin angle and the upper swing angle degree of measurement mechanical arm, by the upper swing angle degree of mechanical arm, extend displacement and backspin angle to determine the locus of Image Acquisition instrument.
Cancelled in addition the peripheral drive module of electroshutter, be integrated on the control panel in Image Acquisition instrument, directly by Single-chip Controlling, reduced and originally with dataphone, annexed the USB cable of power supply, make the control of electroshutter simple and direct, also reduced the pressure of computer main board power supply.
Software section is divided into two parts, and a part is single-chip microcomputer control program, by C language compilation; A part is host computer operation interface in addition, by VB language compilation. by VB operation interface, control corresponding operation. meet the shooting flow process under different situations simultaneously.
Corresponding parameter: interfere the object distance in source, the object distance of image capture instrument, the upper anglec of rotation of mechanical arm, the length of lower anglec of rotation mechanical arm. these parameters are all to import to the required argument calculating in three-dimensional reconstruction algorithm.
The main function realizing: the opening and closing of light and modeling lamp, the opening and closing of finishing tool, the rotation of grating and initial point location (zero-bit), the rear focusing in interference source is walked about and is preserved with data, the prefocusing data in interference source are preserved, the rear focusing of Image Acquisition instrument is walked about and is preserved with data, and the aperture size setting of electroshutter and time shutter arrange, and positioning flow is controlled.
Whole control system is that the mechanical part for device systems tailors, high precision current potential device, magnetic railings ruler provides high accuracy data, photoelectric isolation module is effectively isolated the signal transmission of single-chip microcomputer and load, increased security, reduced circuit interference, simplified circuit design, integrated stepper motor drives chip in control circuit board, there is synchronizing, half step, 1/4th segmentations, 1/8th segmentations optional, meet the requirement to speed, precision under different situations, there is rotating controlled, also reduced greatly in addition volume, cost also corresponding reduction is a lot.
Claims (5)
1. a Portable three-dimensional reconstruction data acquisition system, comprises grating interference source and Image Acquisition instrument, it is characterized in that:
Grating interference source control circuit comprises the first single-chip microcomputer, focus control after photoelectricity isolation is linked the first stepping motor drive module and driven the first stepper motor to complete grating interference source, through photoelectricity isolation, linking the 3rd stepper motor driver module drives the 3rd stepper motor to complete the rotation control to the lenticular lenses in grating interference source, through photoelectricity isolation, linking the 4th stepper motor driver module drives the 4th stepper motor to complete the switch control to the finishing tool in grating interference source, described finishing tool is used for playing the bridging effect to light in grating interference source at described Portable three-dimensional reconstruction data acquisition system,
The first magnetic railings ruler, the first photoelectric sensor, the first limit switch and the first approach switch are linked the first single-chip microcomputer through photoelectricity isolation, the first magnetic railings ruler is for measuring the rear focusing displacement in grating interference source, the first photoelectric sensor, the first limit switch and the first approach switch are for playing the role of positioning to the stroke of walking about of the first stepper motor, the 3rd approach switch is for playing the role of positioning to the stroke of walking about of the 3rd stepper motor, the 4th approach switch is for playing the role of positioning to the stroke of walking about of the 4th stepper motor
The first displacement transducer, second displacement sensor, the first angular transducer and the second angular transducer are linked the first single-chip microcomputer through analog-to-digital conversion module, the first displacement transducer is for measuring the prefocusing displacement in grating interference source, the mechanical arm that second displacement sensor obtains instrument for measurement image extends displacement, the first angular transducer obtains the backspin angle of the mechanical arm of instrument for measurement image, the second angular transducer obtains the upper swing angle degree of the mechanical arm of instrument for measurement image, described Portable three-dimensional reconstruction data acquisition system is determined the locus of Image Acquisition instrument by the first angular transducer and the second angular transducer and second displacement sensor,
The first single-chip microcomputer connects controls lighting control module and modeling lamp control module, and the first single-chip microcomputer is connected with communication module;
Image Acquisition instrument control circuit comprises second singlechip, focus control after photoelectricity isolation is linked the second stepping motor drive module and driven the adjustment of the second stepper motor by the displacement of logarithmic code back to complete Image Acquisition instrument,
The second magnetic railings ruler, the second photoelectric sensor, the second limit switch and the second approach switch are linked second singlechip through photoelectricity isolation, the second magnetic railings ruler obtains the rear focusing displacement of instrument for measurement image, the second photoelectric sensor, the second limit switch and the second approach switch are for playing the role of positioning to the stroke of walking about of the second stepper motor
Second singlechip is linked DIGITAL-MODUL-R trigger control module, and second singlechip is linked electroshutter control module, controls shutter and the aperture of the camera of Image Acquisition instrument,
The mechanical arm of Image Acquisition instrument adopts mechanical handle manual adjusting style.
2. Portable three-dimensional reconstruction data acquisition system as claimed in claim 1, it is characterized in that, the first stepper motor, the second stepper motor, the 3rd stepper motor and the 4th stepper motor are selected 42 motors, and step angle is 1.8 degree, operate in segmentation 1/8 state, to reduce vibrations.
3. Portable three-dimensional reconstruction data acquisition system as claimed in claim 1, is characterized in that, described analog-to-digital conversion module adopts the anti-jamming circuit of at least 12 precision, makes the composite error of prefocusing and rear focusing in 0.1mm.
4. Portable three-dimensional reconstruction data acquisition system as claimed in claim 1, is characterized in that, also comprises a host computer operation interface, in order to input corresponding parameter.
5. Portable three-dimensional reconstruction data acquisition system as claimed in claim 1, it is characterized in that, the integrated stepper motor driving chip of the first stepping motor drive module, the second stepping motor drive module, the 3rd stepper motor driver module and the 4th stepper motor driver module has synchronizing, partly step, 1/4th segmentations, 1/8th are segmented optional, meet the requirement to speed, precision under different situations, and it is controlled to have rotating.
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| CN102881040A (en) * | 2012-08-08 | 2013-01-16 | 浙江华震数字化工程有限公司 | Three-dimensional reconstruction method for mobile photographing of digital camera |
| CN104090464B (en) * | 2014-06-27 | 2017-02-15 | 嘉善天慧光电科技有限公司 | Portable self-adaptive three-dimensional image re-constructor |
| CN111578867B (en) * | 2020-04-10 | 2021-08-24 | 清华大学深圳国际研究生院 | Three-dimensional imaging method and system based on multiple-time dislocation compression holographic reconstruction |
| CN113178153A (en) * | 2021-05-11 | 2021-07-27 | 上海应用技术大学 | Holographic image device and method for ancient building facade |
| CN114923419B (en) * | 2022-05-05 | 2024-02-27 | 西安应用光学研究所 | Self-calibration grating positioning device and calibration method based on spatial light path |
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| TW580556B (en) * | 2002-11-22 | 2004-03-21 | Ind Tech Res Inst | Method and system for measuring the three-dimensional appearance of an object surface |
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| EP2160658B1 (en) * | 2007-05-21 | 2011-01-26 | SeeReal Technologies S.A. | Holographic reconstruction system with an arrangement of controllable microcells |
| CN101308012A (en) * | 2008-05-29 | 2008-11-19 | 上海交通大学 | Double monocular white light three-dimensional measuring systems calibration method |
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