CN106570932B - Human head three-dimensional data acquisition system and method based on image - Google Patents
Human head three-dimensional data acquisition system and method based on image Download PDFInfo
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- CN106570932B CN106570932B CN201610946713.6A CN201610946713A CN106570932B CN 106570932 B CN106570932 B CN 106570932B CN 201610946713 A CN201610946713 A CN 201610946713A CN 106570932 B CN106570932 B CN 106570932B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/08—Indexing scheme for image data processing or generation, in general involving all processing steps from image acquisition to 3D model generation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a human head three-dimensional data acquisition system and a method based on images; the three-dimensional data acquisition system comprises an image acquisition device, a shooting platform and a position adjusting device for adjusting the position of the image acquisition device relative to the shooting platform; the position adjusting device comprises an annular track and an auxiliary shooting bracket capable of three-dimensionally adjusting; the shooting platform is positioned at the center of the annular track, the auxiliary shooting support is movably arranged on the annular track, and the image acquisition device is arranged on the auxiliary shooting support; the image acquisition device can enable the head of a human body positioned on the shooting platform to be always positioned in the shooting view area of the image acquisition device under the three-dimensional adjustment of the auxiliary shooting bracket; the auxiliary shooting support moves along the annular track, so that 360-degree image acquisition of the image acquisition device on the head of a human body positioned on the shooting platform can be realized. Therefore, the invention has the advantages of simple structure, easy operation and low cost.
Description
Technical Field
The invention relates to a human head three-dimensional data acquisition system and a method based on images, belonging to the technical field of computer graphics and computer vision.
Background
Image-based three-dimensional modeling is a hot spot research problem in the subject fields of current computer vision, computer graphics and the like.
Traditional three-dimensional scanning lasographs and structured light scanners can accurately capture three-dimensional geometric information of the surface of an object, but such devices are generally complex in structure, difficult to operate and expensive. Traditional acquisition of accurate three-dimensional models based on multi-view video sequences is short in acquisition time, but camera arrays are generally required to be built, and cost is high. The modeling time of a single image is short, the accuracy is high, but the model is constrained by taking a corresponding database as priori knowledge, the priori knowledge is not available, and three-dimensional reconstruction can not be realized only by using a single image.
Disclosure of Invention
The invention aims to: in order to overcome the problems, the invention provides a three-dimensional data acquisition system and a three-dimensional data acquisition method for human head based on images.
In order to overcome the technical problems, the invention adopts the following technical scheme:
the three-dimensional data acquisition system based on the image comprises an image acquisition device, a shooting platform and a position adjusting device for adjusting the position of the image acquisition device relative to the shooting platform; the position adjusting device comprises an annular track and an auxiliary shooting bracket capable of three-dimensionally adjusting; the shooting platform is positioned at the center of the annular track, the auxiliary shooting support is movably arranged on the annular track, and the image acquisition device is arranged on the auxiliary shooting support; the image acquisition device can enable the head of a human body positioned on the shooting platform to be always positioned in the shooting view area of the image acquisition device under the three-dimensional adjustment of the auxiliary shooting bracket; the auxiliary shooting support moves along the annular track, so that 360-degree image acquisition of the image acquisition device on the head of a human body positioned on the shooting platform can be realized.
The auxiliary shooting support is fixedly arranged on a flat trolley which is movably arranged on the annular track.
The auxiliary shooting support comprises a base, a camera holder and a three-dimensional adjusting mechanism capable of adjusting the three-dimensional position of the camera holder; the three-dimensional adjusting mechanism comprises a Z-direction translation mechanism and an XY plane rotation driving mechanism; the power output end of the XY plane rotation driving mechanism is fixed with the camera tripod head, the XY plane rotation driving mechanism is arranged at the power output end of the Z-direction translation mechanism, and the Z-direction translation mechanism is arranged on the base; the image acquisition device is arranged on the camera tripod head, the camera tripod head can do rotary motion in the XY plane under the drive of the rotary driving mechanism in the XY plane, and the rotary driving mechanism in the XY plane can do Z-direction translational motion perpendicular to the XY plane under the drive of the Z-direction translational mechanism, so that the camera tripod head is driven to do Z-direction translational motion perpendicular to the XY plane.
The Z-direction translation mechanism comprises a roller screw rod, a connecting rod and a driving motor; the two rolling shaft lead screws are arranged on the base in parallel and are respectively connected with the power output end of the driving motor; the connecting rod is positioned between the two roller screw rods, and two ends of the connecting rod are movably connected with the adjacent roller screw rod through linear bearings; the XY plane rotation driving mechanism comprises a rotating arm, one end of the rotating arm is connected with the camera tripod head, the other end of the rotating arm vertically penetrates through the connecting rod and then is connected with the operating handle, and the rotating arm is fastened with the connecting rod through a fastening knob.
The flat trolley controls the movement condition through a trolley movement controller; the trolley motion controller can correspond to the preset period of intermittent motion of the panel trolley and the time of image acquisition motion aiming at each state of the camera in the head-up shooting target, the head-up shooting target and the overlook shooting target.
The auxiliary shooting support is subjected to three-dimensional adjustment through an auxiliary controller; the auxiliary controller is used for adjusting the shooting angle of the camera relative to the head of the human body sitting on the shooting platform, so that the camera can be respectively positioned on a head-up shooting target, a head-up shooting target and a top-down shooting target.
The image acquisition device comprises a camera and a timing shutter remote controller for controlling shooting intervals and shooting quantity of the camera.
More than 3 light supplementing lamps are uniformly distributed around the shooting platform; the horizontal distance between the light supplement lamp and the center of the photographing platform was 2.5 meters, and the inclination angle of the light supplement lamp with respect to the horizontal plane of the photographing platform was 45 °.
The invention further aims to provide an image-based human head three-dimensional data acquisition system which comprises a camera, a shooting platform, an annular track, a flat trolley, an auxiliary shooting bracket, a trolley motion controller, a timing shutter remote controller, a light supplementing lamp and a computer; the auxiliary shooting support comprises a base, an auxiliary controller, a driving motor, a roller screw rod, a linear bearing, a connecting rod, a rotating arm, a fastening bolt and a camera cradle head; wherein: the camera is connected with the computer through a data line, and image modeling matching software for processing the picture information transmitted by the camera is installed in the computer; the shooting platform is positioned at the center of the annular track, the base of the auxiliary shooting support is fixedly arranged on the flat trolley, and the flat trolley is movably arranged on the annular track; the camera is fixedly arranged on a camera holder of the auxiliary shooting bracket; in the auxiliary shooting support, two rolling shaft screw rods are arranged on the base in parallel and are respectively connected with the power output end of the driving motor; the connecting rod is positioned between the two roller screw rods, and two ends of the connecting rod are movably connected with the adjacent roller screw rod through linear bearings; one end of the rotating arm is connected with the camera tripod head, the other end of the rotating arm vertically penetrates through the connecting rod and then is connected with the operating handle, and the rotating arm is fastened with the connecting rod through a fastening knob; the flat trolley is connected with the trolley motion controller; the device comprises a driving motor, an auxiliary controller, a camera and a timing shutter remote controller; the auxiliary controller is used for adjusting the shooting angle of the camera relative to the head of the human body sitting on the shooting platform, so that the camera can be respectively positioned at a head-up shooting target, a head-up shooting target and a top-down shooting target; the trolley motion controller can correspond to the preset period of intermittent motion of the panel trolley and the time of image acquisition motion aiming at each state of the camera in the head-up shooting target, the head-up shooting target and the overlook shooting target; the timing shutter remote controller can preset the shooting interval and the shooting quantity of the cameras; under the control of the auxiliary controller, the driving motor drives the roller screw rod to drive the connecting rod to translate, so that the requirement of a preset camera shooting angle is met; the flat trolley moves along the annular track under the control of the trolley movement controller; under the control of the timing shutter remote controller, the camera shoots the head of the human body sitting on the shooting platform according to the shooting interval and the shooting quantity preset by the timing shutter remote controller.
The invention also provides a three-dimensional data acquisition method of human head based on images, which utilizes the three-dimensional data acquisition system of human head based on images, and comprises the following steps: step one: adjusting a rotating arm to enable a camera to look up a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting an acquisition interval t1 and an acquisition number n1 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of looking up acquisition motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target; step two: adjusting a rotating arm to enable a camera to overlook a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting an acquisition interval t2 and an acquisition number n2 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of overlooking acquisition motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target; step three: adjusting a rotating arm to enable a camera to look up at a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting a collection interval t3 and a collection number n3 of looking up through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of head-up collection motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target; step four: combining the characteristics of a modeling target, and combining a manual moving flat trolley camera with an auxiliary controller to enable the camera to move to a proper position so as to acquire local important characteristic images of the modeling target; the modeling target mentioned in the above steps is the head of a human body sitting at the photographing platform.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the invention only needs one camera, and the cost is far less than that of a scanner and an array camera. The modeling process can rapidly and stably complete the acquisition of the sequence images through the timing shutter remote controller and the platform trolley motion controller only by adjusting the height and the angle of the camera through the auxiliary shooting support, a complex structural system is not required to be built, and a human head model database is not required to be built. And the high-precision three-dimensional model is rapidly obtained by carrying out batch processing through image modeling matched software, and subsequent processing is not needed. The invention has simple structure, easy operation and low cost.
Drawings
FIG. 1 is a flow chart of a method for three-dimensional data acquisition of a human head based on an image;
FIG. 2 is a schematic diagram of a three-dimensional data acquisition system for a human head;
FIG. 3 is a schematic view of the structure of the flatbed trolley and the auxiliary shooting support;
reference numerals in the drawings: 1. a camera; 2. a shooting platform; 3. an endless track; 4. a flat trolley; 5. an auxiliary shooting support; 6. a light supplementing lamp; 7. a computer; 8. a base; 9. a roller screw; 10. a linear bearing; 11. a connecting rod; 12. a rotating arm; 13. fastening a knob; 14. camera cradle head.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The relative arrangement of the components and steps set forth in these embodiments is not specified otherwise. The expressions and numerical values do not limit the scope of the invention. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations).
The present invention will be described in detail with reference to fig. 1 to 3.
As shown in fig. 2 and 3, the image-based three-dimensional data acquisition system for human head comprises a camera 1 for acquiring images, a shooting platform 2, an annular track 3, a flat trolley 4, an auxiliary shooting support 5, a flat trolley motion controller, a timing shutter remote controller, a light supplementing lamp 6 and a computer 7, wherein the computer is provided with image modeling matching software, and the auxiliary shooting support comprises: base 8, auxiliary controller, motor, roller screw 9, linear bearing 10, connecting rod 11, swinging boom 12, fastening knob 13 and camera cloud platform 14.
As shown in fig. 2, the inner diameter of the circular orbit is 3m, the shooting platform is positioned at the center of the circular orbit, the height of the shooting platform is 0.5m, and the target person sits on the shooting platform during the image acquisition process. The wheels of the flat trolley are clamped on the annular track, the auxiliary shooting support base is fixed on the body of the flat trolley, and the flat trolley moves to drive the auxiliary shooting platform and the camera to move. The number of cameras is 1, and the bottom of each camera is fixed with a camera holder arranged on the auxiliary shooting platform. The light filling lamp number is three, evenly distributed around shooting the platform, and light filling lamp is 45 overlook and shines shooting the platform with the level, and light filling lamp is 2.5m with shooting the platform horizontal distance, is equipped with luminance adjustable button on the light filling lamp.
As shown in fig. 3, the number of the two rolling shaft screws is two, the two rolling shaft screws pass through the linear bearings fixed with the two ends of the connecting rod in parallel, and the motor drives the optical shaft screws to rotate so as to drive the connecting rod to move up and down. The connecting rod passes the swinging boom perpendicularly, and the connecting rod up-and-down motion drives swinging boom, camera cloud platform and camera up-and-down motion, and fastening knob installs on the swinging boom, and the camera cloud platform is installed to swinging boom one end, and the other end is equipped with the operation handle, loosens fastening knob, can adjust the shooting angle of camera through the operation handle fast.
The working principle of the invention is as follows: the target person sits at the shooting platform, the height of the camera is adjusted through an auxiliary controller of an auxiliary shooting bracket, and the angle of the camera is adjusted through a rotating arm, so that the camera reaches an optimal shooting position; setting the acquisition interval and the acquisition quantity of each step of the camera through a timing shutter remote controller, and setting the period of intermittent motion of a trolley through a flat trolley motion controller to sequentially finish the acquisition of a plane view image, the acquisition of a overlook image, the acquisition of a look-up image and the acquisition of a local important characteristic image; in the image acquisition process, light is supplemented through a light supplementing lamp, so that a high-quality image is ensured to be obtained; after the image acquisition is completed, the image is imported into image modeling matching software agioft, modeling steps and parameters are set, and the running software can obtain a high-precision three-dimensional model.
According to the image-based human head three-dimensional data acquisition system, the invention discloses an image-based human head three-dimensional data acquisition method, which comprises the following specific steps:
step one: adjusting a rotating arm to enable a camera to look up a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting a collection interval t1 and a collection number n1 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of looking up the collection motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target;
step two: adjusting a rotating arm to enable a camera to look down at a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting a collection interval t2 and a collection number n2 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of looking down the collection motion through a flat trolley motion controller, and simultaneously starting the timing shutter remote controller and the flat trolley motion controller to shoot a circle around the target;
step three: adjusting a rotating arm to enable a camera to look up at a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting an acquisition interval t3 and an acquisition number n3 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of looking up the acquisition motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target;
step four: combining the characteristics of a modeling target, and combining a manual moving flat trolley camera with an auxiliary controller to enable the camera to move to a proper position so as to acquire local important characteristic images of the modeling target; the locally important features mentioned in this step mainly refer to the parts of the person's five sense organs, such as eyes, ears, nose, mouth, etc.
Claims (3)
1. The utility model provides a human head three-dimensional data acquisition system based on image which characterized in that: the device comprises a camera, a shooting platform, an annular track, a flat trolley, an auxiliary shooting bracket, a trolley motion controller, a timing shutter remote controller, a light supplementing lamp and a computer;
the auxiliary shooting support comprises a base, an auxiliary controller, a driving motor, a roller screw rod, a linear bearing, a connecting rod, a rotating arm, a fastening bolt and a camera cradle head; wherein: the camera is connected with the computer through a data line, and image modeling matching software for processing the picture information transmitted by the camera is installed in the computer;
the shooting platform is positioned at the center of the annular track, the base of the auxiliary shooting support is fixedly arranged on the flat trolley, and the flat trolley is movably arranged on the annular track; the camera is fixedly arranged on a camera holder of the auxiliary shooting bracket;
in the auxiliary shooting support, two rolling shaft screw rods are arranged on the base in parallel and are respectively connected with the power output end of the driving motor; the connecting rod is positioned between the two roller screw rods, and two ends of the connecting rod are movably connected with the adjacent roller screw rod through linear bearings; one end of the rotating arm is connected with the camera tripod head, the other end of the rotating arm vertically penetrates through the connecting rod and then is connected with the operating handle, and the rotating arm is fastened with the connecting rod through a fastening knob;
the flat trolley is connected with the trolley motion controller; the driving motor is connected with the auxiliary controller, and the camera is connected with the timing shutter remote controller;
the auxiliary controller is used for adjusting the shooting angle of the camera relative to the head of the human body sitting on the shooting platform, so that the camera can be respectively positioned at a head-up shooting target, a head-up shooting target and a top-down shooting target;
the trolley motion controller can correspond to the preset period of intermittent motion of the panel trolley and the time of image acquisition motion aiming at each state of the camera in the head-up shooting target, the head-up shooting target and the overlook shooting target;
the timing shutter remote controller can preset the shooting interval and the shooting quantity of the cameras;
under the control of the auxiliary controller, the driving motor drives the roller screw rod to drive the connecting rod to translate, so that the requirement of a preset camera shooting angle is met;
the flat trolley moves along the annular track under the control of the trolley movement controller;
under the control of the timing shutter remote controller, the camera shoots the head of the human body sitting on the shooting platform according to the shooting interval and the shooting quantity preset by the timing shutter remote controller.
2. The image-based human head three-dimensional data acquisition system of claim 1, wherein: more than 3 light supplementing lamps are uniformly distributed around the shooting platform; the horizontal distance between the light supplement lamp and the center of the photographing platform was 2.5 meters, and the inclination angle of the light supplement lamp with respect to the horizontal plane of the photographing platform was 45 °.
3. An image-based human head three-dimensional data acquisition method using the image-based human head three-dimensional data acquisition system according to claim 1, characterized by comprising the steps of:
step one: adjusting a rotating arm to enable a camera to look up a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting an acquisition interval t1 and an acquisition number n1 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of looking up acquisition motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target;
step two: adjusting a rotating arm to enable a camera to overlook a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting an acquisition interval t2 and an acquisition number n2 of the camera through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of overlooking acquisition motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target;
step three: adjusting a rotating arm to enable a camera to look up at a modeling target, starting an auxiliary controller to enable the camera to move to a proper height position, setting a collection interval t3 and a collection number n3 of looking up through a timing shutter remote controller, setting a period of intermittent motion of a trolley and time of head-up collection motion through a trolley motion controller, and simultaneously starting the timing shutter remote controller and the trolley motion controller to shoot a circle around the target;
step four: combining the characteristics of a modeling target, and combining a manual moving flat trolley camera with an auxiliary controller to enable the camera to move to a proper position so as to acquire local important characteristic images of the modeling target;
the modeling target mentioned in the above steps is the head of a human body sitting at the photographing platform.
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CN110827196A (en) * | 2018-09-05 | 2020-02-21 | 天目爱视(北京)科技有限公司 | Device capable of simultaneously acquiring 3D information of multiple regions of target object |
CN109218702B (en) * | 2018-09-05 | 2019-12-31 | 天目爱视(北京)科技有限公司 | Camera rotation type 3D measurement and information acquisition device |
CN110493589A (en) * | 2019-08-09 | 2019-11-22 | 深圳卡乐星球数字娱乐有限公司 | A kind of 3 D image acquring system |
CN110530441B (en) * | 2019-08-21 | 2020-11-03 | 河海大学 | All-weather online video flow measuring system |
CN111331574A (en) * | 2020-03-18 | 2020-06-26 | 深圳市创真视界科技有限公司 | Static object three-dimensional reconstruction data acquisition system based on mechanical arm |
CN112305165B (en) * | 2020-10-23 | 2022-06-24 | 四川华能泸定水电有限公司 | Simulation model and method for evaluating stability of slope vegetation body |
CN113163094A (en) * | 2021-05-10 | 2021-07-23 | 北京清飞科技有限公司 | Photographing type image acquisition system and method |
CN114488664B (en) * | 2022-03-21 | 2023-12-29 | 厦门大学 | Electronic information engineering image acquisition processing device |
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CN101701816B (en) * | 2009-10-23 | 2011-11-23 | 长江三峡勘测研究院有限公司(武汉) | Method for collecting and processing geological exploration digital images in underground cave with large cross section |
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