CN106534671A - 360-degree image synchronization acquisition system - Google Patents
360-degree image synchronization acquisition system Download PDFInfo
- Publication number
- CN106534671A CN106534671A CN201610944087.7A CN201610944087A CN106534671A CN 106534671 A CN106534671 A CN 106534671A CN 201610944087 A CN201610944087 A CN 201610944087A CN 106534671 A CN106534671 A CN 106534671A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
Abstract
The invention discloses a 360-degree image synchronization acquisition system which can provide a uniform illumination environment and simultaneously acquires a 360-degree image, and belongs to the field of image acquisition devices. The system comprises a support frame, image acquisition devices, a flashlight group, a rack, a spherical holder, a synchronous trigger and a control host. The surface of the support frame is covered by diffuse reflection photography paper to form a closed environment. The flashlight group is arranged on the support frame. The rack is placed in the support frame. The image acquisition devices are fixed on the rack through the spherical holder. Each image acquisition device is connected with the synchronous trigger and the control host. The system can instantly acquire the 360-degree high-definition image of a human body or a scene, and can be applied to three-dimensional reconstruction of video game models, computer vision data acquisition and other fields.
Description
Technical field
The present invention relates to one kind can provide uniform illumination environment, and synchronize control under this photoenvironment to camera,
The image capturing system of collection 360 degree of images of scene.The invention belongs to image collecting device field.
Background technology
In recent years, computer vision quickly grows, while the technology of virtual reality and augmented reality receives substantial amounts of pass
Note, panoramic video, dimensional Modeling Technology gradually have increasingly consequence in video display animation, game making, ecommerce.
At present, main 3D reconstruction techniques are divided into active reconstruction and passive type is rebuild.Active reconstruction is to launch laser by equipment
Or the active light source such as structure light is obtaining the geometry of object, and passive type reconstruction technique is the Jing after gathering view data
Cross the three-dimensional information that algorithm recovers object.Active three-dimensional reconstruction can reach high precision, but superhigh precision
Active three-dimensional scanning device it is often less efficient, need the plenty of time to carry out object 360 degree of scanning, such scanning
Equipment is commonly used in industrial reverse-engineering etc. the field of high requirement to precision.The input data of passive type three-dimensional reconstruction is led to
It is often one group of image sequence, is to use extensive passive type Three-dimensional Gravity at present based on the multi-view angle three-dimensional algorithm for reconstructing of image sequence
Algorithm is built, such algorithm is generally comprised the steps of：Found in image sequence using the feature finding algorithm of such as SIFT etc.
Characteristic point；Characteristic point in different images is matched；Phase is calculated using light-stream adjustment (Bundle adjustment)
The location matrix and inner parameter of machine, and obtain the sparse electric cloud of scene；Using multiple views matching algorithm such as PMVS, CMVS comes
Obtain rebuilding the point off density cloud of scene；Gridding process is carried out to a cloud；Texture mapping.
S.M.Seitz in 2006 et al. is in their article (A Comparison and Evaluation of Multi-
View Stereo Reconstruction Algorithms, 2006 IEEE Computer Society Conference
on Computer Vision and Pattern Recognition(CVPR'06).IEEE,2006,1:519-528.) middle ratio
It is good and bad compared with the three-dimensional reconstruction algorithm of current main-stream, in website http:Also have on //vision.middlebury.edu/mview
The modeling Contrast on effect of current big quantity algorithm.They rebuild using data set by a set of rotation platform gathering, this
Set platform gathers the view data of object 360 degree using rotating mechanical arm by fixed camera on the robotic arm.Due to adopting
The design of one camera, this set acquisition system can only gather the still life of smaller size smaller.
The Light Stage systems of many sets have been built in the ICT imaging experiments room of University of Southern California of the U.S., and they are by building
Metallic support is controlled to light source and camera using computer and reaches the camera under controlled light source setting up camera and light source
Sync pulse jamming.Light Stage serial systems have used several cameras not waited to tens number of units amounts, according to the difference of scene
To select the quantity of camera.As they have been used mostly the algorithm of photometric stereo (Photometric stereo), therefore make
Camera quantity is relatively fewer, and what light source was selected is LED point light source, it is impossible to provide uniform illumination condition well.
The content of the invention
The deficiency that acquisition time length, light as requested are harsh, the non-still life difficulty of shooting is big for current image capturing system,
The invention provides a kind of 360 degree of picture synchronization collection systems, the system can provide one abundance and uniform illumination
Shooting environmental.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of 360 degree of picture synchronization collection systems, including：Support frame, image capture device, flash lamp group, frame, ball
Shape head, synchronizer trigger and control main frame；Diffusing reflection photography paper is coated with the surface of the support frame and forms closing sky
Between, the flash lamp group is installed in support frame, and the frame is placed in support frame；Described image collecting device passes through
Ball-shaped cloud platform is fixed in frame, and each image capture device is connected with synchronizer trigger and control main frame respectively.
Further, the support frame is the cylindrical metal framework using truss structure.
Further, the flash lamp of the flash lamp group is set as light triggering pattern, and flash lamp group is by optical signal come real
It is now synchronous.The flash lamp of the flash lamp group is towards photography paper.
Further, the frame adopts multigroup, and according to circumferential arrangement in support frame；If fixed in every group of frame
Dry image capture device.Preferably, the frame adopts 16 group aluminum alloy frames, vertical with its axis in every group of frame
Direction is equidistantly installed by 5 image capture devices.
Wireless launcher and receiver are installed, in image capture device between described image collecting device and flash lamp group
Flash fire while collection.
The control main frame is connected to group of switches into a LAN, the storage service in LAN by gigabit networking
One store path of device is mapped with a network drive in every control main frame；IMAQ is set by the control main frame
The standby store path for obtaining data is set to the network drive, and all view data of image capture device collection are finally converged
Always in the storage server.
Preferably, described image collecting device adopts slr camera.The camera is by 3.5mm tone frequency channel wires and synchronous triggering
Device connects, and is synchronized using netting twine using RJ45 interfaces between synchronizer trigger, is accessed wherein on a synchronizer trigger
Camera remote control shutter signal receiver, when remote control shutter is triggered, all cameras realize sync pulse jamming.
The system of the present invention provides uniform illumination condition, stable mechanical mechanism and stable camera synchronization, can
Instantaneously, 360 degree of view data are efficiently gathered, is suitable for the data acquisition of human body, still life etc..Which has advantages below：
(1) system of the invention is the gathered data in the space of a closing, effectively shields ambient light to shooting
Interference；
(2) scene is illuminated by the reflected light of high brightness flash lamp, uniform light, while brightness is sufficient；
(3) using slr camera as the instrument for gathering image, single anti-photo-sensitive cell is bigger than general industrial camera, into
Picture effect is good.Sufficient illumination simultaneously is preferably minimized can the noise of imaging；
(4) camera is stable by wired triggering net synchronization capability；
(5) synchronous triggering speed is fast, can be in gathered data in the extremely short time, it is adaptable to the such as non-still life of human body etc.；
(6) present invention can install 80 slr cameras (can increase and decrease quantity on this basis), by the Synchronization Control of camera
Data acquisition storage is carried out in the time in one second, high-quality image sequence can be efficiently gathered；
(7) for current passive algorithm for reconstructing, and the making in a large number to role's reconstructing three-dimensional model in video display game
With the present invention is well positioned to meet requirement of these application scenarios to required image data acquisition, is widely used in video display game
The fields such as model three-dimensional reconstruction, computer vision data acquisition.
Description of the drawings
Fig. 1 is the external metallization circuit theory schematic diagram of system；
Fig. 2 is the generalized section that (a) collar is installed with (b) foundation ring flash lamp；1- frameworks, 2- lamp hooks, 3- flash lamps；
Fig. 3 is camera mounting support structure schematic diagram, (a) stereogram, (b) side view, (c) front elevation；
Fig. 4 is slr camera scheme of installation, 4- camera mounting brackets, 5- ball-shaped cloud platforms, 6- slr cameras；
Fig. 5 is system control process schematic diagram, and 7- camera arrays, 8- synchronously trigger box, 9-USB hub, 10- computer master
Machine, 11- switches, 12- servers.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
First, a cylindrical metal support frame is designed, metal framework is built by aluminium alloy truss in Fig. 1, truss
Collar and foundation ring be respectively bolted by 8 sections of arc parts, have substantial amounts of triangular structure in truss, can mitigate frame
Ensure while frame weight that framework can bear substantial amounts of pulling force, Stability Analysis of Structures is built conveniently.The external diameter of cylindrical stent is
6.2m, four root posts are highly 2.7m.Cylindrical frame surrounding and top be covered with white diffusing reflection photography paper, paper of photographing
Close to preferable Lambert surface, the brightness in all directions of the light of reflection is identical on surface.In collar and the foundation ring of framework
16 flash lamps of each equidistant installation, during shooting, by optical signal synchronization flash, the direction of flash lamp is against photography to flash lamp
Paper.The launching light on photography paper surface intensity in all directions is basically identical, therefore by reflection of the paper in framework of photographing
Luminous energy provides sufficient and uniform illumination to the scene for needing to shoot.
On the premise of having a good photoenvironment, said external metal framework provides such shooting environmental,
Need to arrange the imageing sensor that shooting is used in such circumstances.The system employs digital single-lens reflex camera and sets as IMAQ
Standby, as digital single dislike optical element is big compared with general industrial camera area, imaging effect during shooting is preferable.In this cylinder
16 group aluminum alloy camera frames, every group of camera frame have been disposed equidistantly to be mounted with 5 number of units codes in its axis vertical direction in shape framework
Slr camera, altogether 80 cameras.In multiple views three-dimensional reconstruction algorithm, the lap of input image sequence is bigger, reconstruction
Quality is higher, therefore the quantity of camera can have been floated on the basis of 80.Camera frame is built using industrial aluminum profile,
Standard sections can reach very high required precision, while ensureing the stable of camera frame and loading and unloading easy.Camera passes through spherical cloud
Platform is fixed in industrial aluminum profile lateral grooves.Ball-shaped cloud platform can 360 degree of adjustment position, the shooting angle of camera selects ten
Divide flexible.Camera frame is placed in one with the circumference that outside cylindrical frame axis is center of circle radius as 2.5m.
It is equally spaced in the top circumference and lower circumference of Fig. 2 middle frames to be respectively mounted with 16 high brightness flash lamps.Camera
It is fixed on metal framework 1 by lamp hook 2, flash lamp 3 fixed position in top is 15 ° or so upward of level, and bottom flash lamp 3 is admittedly
Positioning is set to towards 45 ° upward of surrounding photography paper direction level.Flash lamp 3 not directly faces frame center, but by photography
The reflected light of paper is being illuminated to whole shooting environmental.During shooting, wherein a flash lamp 3 receives phase by wireless receiver
The transmitter installed on machine to draw glitch synchronous with camera, pass through optical signal synchronization between flash lamp 3.Flash of light is in framework
Reflection luminous energy provides sufficient and uniform illumination to the scene for needing to shoot, and uniform illumination can effectively eliminate shooting object
Bloom and dash area, and high brightness be camera acquisition parameters in the numerical value of ISO can reduce camera can so shot
When noise reduce, while high brightness can allow for camera uses less aperture, can so make to have more when shooting
The big depth of field, it is ensured that shoot object all in field depth, the edge of object is sharp keen enough in the picture.
Camera mounting bracket in Fig. 3 is manufactured by 4040 industrial aluminum profile of Europe superscript, the high 2.5m of support, wide 0.64m, long
1.2m, is attached fixation using strength corner fittings, T-bolt, flange nut between each part of support.Have in the entire system
16 identical supports are uniformly placed in external frame around the axis of external cylindrical framework.This camera support due to
It is independent design, the movement of position is very convenient, while the use of section bar also makes support firm stable.
Ball-shaped cloud platform 5 in Fig. 4 is fixed on the groove of section bar by bolt and square nut.Slr camera in the system
Spacing between 6 is 30cm, extreme lower position 50cm from the ground, such installation site can be used for shooting the bust of human body with
And some are with regard to the object of 1m height.Slr camera 6 connects camera synchronization box by cable release, and during shooting, synchronous box synchronously triggers phase
Machine, the scene high definition picture of 360 degree of camera sync pulse jamming.
Camera array 7 in Fig. 5, adopts 10 cameras for one group, and same group of camera is connected to same host computer 10.One
The quantity of group camera is limited by host performance, and the stability of the more controls of camera quantity is poorer.The synchronous triggering box 8 of camera
Interior use parallel-connection structure, triggering box have an input port to connect the receiver of wireless shutter, after receiving signal lead to signal branch
Cross cable release and be sent to camera and synchronize triggering.Synchronous triggering box each possess 16 delivery outlets, triggering box and triggering box it
Between connected using netting twine.Same group of camera is connected to USB hub9 by USB3.0 data wires, and host computer 10 passes through hub and phase
Communicate between machine, the volume storing path of the acquisition parameters and picture of host computer control camera.Host computer 10 passes through camera SDK
(software development kit) is realizing the communication and camera between.All hosts are connected to switch 11 by gigabit network cable, per platform master
The IP address of machine is arranged in the same network segment, and switch 11 has one to upload connection to server 12.It is all to collect
Image finally all can be transferred to storage server 12 by switch 11, and server 12 is controlling camera by LAN per platform
The store path of image is set to the network of storage server mapping for mapped network drive on host computer 10, control main frame
Image is all transmitted in all storage servers 12 by driver, such switch 11, for the process and preservation in later stage.
Claims (10)
1. a kind of 360 degree of picture synchronization collection systems, it is characterised in that the system includes：Support frame, image capture device,
Flash lamp group, frame, ball-shaped cloud platform, synchronizer trigger and control main frame；Diffusing reflection is coated with the surface of the support frame
Photography paper forms closing space, and the flash lamp group is installed in support frame, and the frame is placed in support frame；It is described
Image capture device is fixed in frame by ball-shaped cloud platform, and each image capture device is led with synchronizer trigger and control respectively
Machine connects.
2. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that the support frame is
Using the cylindrical metal framework of truss structure.
3. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that the flash lamp group
Flash lamp is set as light triggering pattern, and flash lamp group realizes synchronization by optical signal.
4. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that flash lamp group is towards unrestrained
Reflection photography paper.
5. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that the frame is using more
Group, and according to circumferential arrangement in support frame；Several image capture devices are fixed in every group of frame.
6. a kind of 360 degree of picture synchronization collection systems according to claim 5, it is characterised in that the frame adopts 16
Group aluminum alloy frame, equidistantly installs 5 image capture devices in the direction vertical with its axis in every group of frame.
7. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that described image collection sets
It is standby that wireless launcher and receiver are installed between flash lamp group, in the synchronization flash flick of lamp of image capture device collection.
8. a kind of 360 degree of picture synchronization collection systems according to claim 1, it is characterised in that the control main frame is led to
Crossing gigabit networking and group of switches being connected to into a LAN, in LAN, a store path of storage server is per platform
A network drive is mapped with control main frame；The store path that image capture device obtains data is set by the control main frame
The network drive is set to, all view data of image capture device collection are finally summarized in the storage server.
9. 360 degree of picture synchronization collection systems of the one kind according to one of claim 1 to 8, it is characterised in that described image
Collecting device adopts slr camera.
10. a kind of 360 degree of picture synchronization collection systems according to claim 9, it is characterised in that the camera passes through
3.5mm tone frequency channel wires are connected with synchronizer trigger, are synchronized using netting twine using RJ45 interfaces, wherein between synchronizer trigger
Camera remote control shutter signal receiver, all cameras realization synchronously bats when triggering of remote control shutter are accessed on one synchronizer trigger
Take the photograph.
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| CN201610944087.7A CN106534671A (en) | 2016-11-02 | 2016-11-02 | 360-degree image synchronization acquisition system |
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| CN201610944087.7A CN106534671A (en) | 2016-11-02 | 2016-11-02 | 360-degree image synchronization acquisition system |
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| CN201610944087.7A Pending CN106534671A (en) | 2016-11-02 | 2016-11-02 | 360-degree image synchronization acquisition system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980218A (en) * | 2017-05-22 | 2017-07-25 | 苏州市维观网络科技有限公司 | A kind of drum-type multidimensional camera system |
| CN107420711A (en) * | 2017-05-22 | 2017-12-01 | 苏州市维观网络科技有限公司 | One kind is without frame multidimensional camera system |
| CN107452052A (en) * | 2017-07-18 | 2017-12-08 | 桂林电子科技大学 | A kind of three-dimensional modeling apparatus |
| CN108119780A (en) * | 2017-12-18 | 2018-06-05 | 南京大学 | A kind of free-viewing angle becomes illumination image capturing system |
| CN108712632A (en) * | 2018-04-28 | 2018-10-26 | 广东电网有限责任公司 | Optical cable inspection tour system and inspection method in standing |
| CN108965696A (en) * | 2018-06-28 | 2018-12-07 | 天津中科智能识别产业技术研究院有限公司 | A kind of restructural human face data acquisition system of multi-angle of view |
| CN109379524A (en) * | 2018-12-14 | 2019-02-22 | 上海杰图天下网络科技有限公司 | Panoramic view data acquisition device based on industrial camera and industrial lens |
| CN109600556A (en) * | 2019-02-18 | 2019-04-09 | 武汉大学 | A kind of high quality precision omnidirectional imaging system and method based on slr camera |
| CN109872323A (en) * | 2019-02-28 | 2019-06-11 | 北京国网富达科技发展有限责任公司 | The defects of insulator detection method and device of transmission line of electricity |
| CN109922263A (en) * | 2019-03-25 | 2019-06-21 | 天津腾云智航科技有限公司 | It is a kind of high to synchronize more camera lens oblique photograph instrument control systems |
| CN110826367A (en) * | 2018-08-10 | 2020-02-21 | 北京魔门塔科技有限公司 | Human face image acquisition system for data analysis |
| CN112313939A (en) * | 2019-10-30 | 2021-02-02 | 深圳市大疆创新科技有限公司 | Control method, control system, holder and storage medium |
| CN113487727A (en) * | 2021-07-14 | 2021-10-08 | 广西民族大学 | Three-dimensional modeling system, device and method |
| CN116449642A (en) * | 2023-06-19 | 2023-07-18 | 清华大学 | Immersion type light field intelligent sensing calculation system, method and device |
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| CN108119780A (en) * | 2017-12-18 | 2018-06-05 | 南京大学 | A kind of free-viewing angle becomes illumination image capturing system |
| CN108712632A (en) * | 2018-04-28 | 2018-10-26 | 广东电网有限责任公司 | Optical cable inspection tour system and inspection method in standing |
| CN108965696A (en) * | 2018-06-28 | 2018-12-07 | 天津中科智能识别产业技术研究院有限公司 | A kind of restructural human face data acquisition system of multi-angle of view |
| CN110826367A (en) * | 2018-08-10 | 2020-02-21 | 北京魔门塔科技有限公司 | Human face image acquisition system for data analysis |
| CN109379524A (en) * | 2018-12-14 | 2019-02-22 | 上海杰图天下网络科技有限公司 | Panoramic view data acquisition device based on industrial camera and industrial lens |
| CN109600556A (en) * | 2019-02-18 | 2019-04-09 | 武汉大学 | A kind of high quality precision omnidirectional imaging system and method based on slr camera |
| CN109872323A (en) * | 2019-02-28 | 2019-06-11 | 北京国网富达科技发展有限责任公司 | The defects of insulator detection method and device of transmission line of electricity |
| CN109922263A (en) * | 2019-03-25 | 2019-06-21 | 天津腾云智航科技有限公司 | It is a kind of high to synchronize more camera lens oblique photograph instrument control systems |
| CN112313939A (en) * | 2019-10-30 | 2021-02-02 | 深圳市大疆创新科技有限公司 | Control method, control system, holder and storage medium |
| CN112313939B (en) * | 2019-10-30 | 2022-03-18 | 深圳市大疆创新科技有限公司 | Control method, control system, holder and storage medium |
| CN113487727A (en) * | 2021-07-14 | 2021-10-08 | 广西民族大学 | Three-dimensional modeling system, device and method |
| CN113487727B (en) * | 2021-07-14 | 2022-09-02 | 广西民族大学 | Three-dimensional modeling system, device and method |
| CN116449642A (en) * | 2023-06-19 | 2023-07-18 | 清华大学 | Immersion type light field intelligent sensing calculation system, method and device |
| CN116449642B (en) * | 2023-06-19 | 2023-08-29 | 清华大学 | Immersion type light field intelligent sensing calculation system, method and device |
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