CN210327828U - Three-dimensional image acquisition system - Google Patents
Three-dimensional image acquisition system Download PDFInfo
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- CN210327828U CN210327828U CN201921302993.2U CN201921302993U CN210327828U CN 210327828 U CN210327828 U CN 210327828U CN 201921302993 U CN201921302993 U CN 201921302993U CN 210327828 U CN210327828 U CN 210327828U
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Abstract
The utility model provides a three-dimensional image acquisition system, because the LED light source and the camera which are mutually spaced are arranged on the bracket which is arranged around the shooting object, and the polarizer is arranged on the camera, by adjusting the polarization angle of the polarizer, the three-dimensional image acquisition system of the utility model can shoot a set of three-dimensional photo data of the object with left-handed circularly polarized light and a set of three-dimensional photo data of the object with right-handed circularly polarized light, and the obtained two sets of photo data are led into the modeling software based on the image to carry out texture and polygon modeling, a set of images without highlight texture and a set of images with highlight texture can be obtained, then the images with highlight texture are used as normal images, the images without highlight texture are used as diffusion images, the special texture image can be obtained through a formula normal-dispersion, so that the manufacturing period is greatly shortened, and the labor cost is reduced.
Description
Technical Field
The utility model relates to an image acquisition technical field especially relates to a three-dimensional image acquisition system.
Background
In the process of rendering three-dimensional graphics and generating images, a surface texture image needs to be given to a three-dimensional model. However, optical information of texture image materials obtained by a general method contains specular reflection, but the texture materials used in the three-dimensional image rendering process need to be subjected to specular reflection separation to obtain two image materials, namely diffuse reflection (diffuse) and specular reflection (specular reflection), otherwise rendering results are not true and incorrect.
At present, the separation method of highlight in an image is manually removed through image processing software, and the method for manufacturing a texture image material without highlight (specular reflection) greatly depends on the skill of a manufacturer, and in some cases, the highlight component in the image cannot be completely and correctly removed, and the accuracy is low. The method greatly limits the authenticity of the three-dimensional rendering effect, and has long working period and high labor cost.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of above-mentioned prior art, the utility model aims at providing a three-dimensional image acquisition system aims at solving the current high light composition that utilizes the manual work to get rid of in the three-dimensional texture material through image processing software, and the image authenticity of obtaining is not high, and the preparation cycle is long, problem with high costs.
The technical scheme of the utility model as follows:
the three-dimensional image acquisition system comprises a plurality of supports arranged around a shot object, an LED light source and a camera, wherein the LED light source and the camera are arranged on the supports at intervals, and a polarization lens is installed on the camera.
The three-dimensional image acquisition system is characterized in that the LED light source and the camera are arranged on the support through the holder.
The three-dimensional image acquisition system is characterized in that a liquid crystal optical shutter is arranged on the LED light source.
The three-dimensional image acquisition system is characterized in that the liquid crystal optical shutter is electrically connected with the controller.
The three-dimensional image acquisition system, wherein, the support is provided with 12, and sets up equally spaced between the adjacent support.
The three-dimensional image acquisition system is characterized in that a rotating platform is arranged at the bottom of the shot object.
The three-dimensional image acquisition system is characterized in that the rotating platform comprises a platform body, a driving motor fixedly connected to the platform body and a turntable connected with the driving motor.
The three-dimensional image acquisition system is characterized in that the LED light source is an annular LED light source.
The three-dimensional image acquisition system is characterized in that the LED light source is a color temperature changing LED light source.
The three-dimensional image acquisition system is characterized in that the camera is connected with a computer.
Has the advantages that: the utility model provides a three-dimensional image acquisition system, because be provided with LED light source and the camera of mutual interval on encircleing the support that shoots the object setting, and install the polarizing lens on the camera, through adjusting the polarization angle of polarizing lens, the three-dimensional image acquisition system of the utility model can shoot and obtain the photo of a set of object that is lighted by left-handed circular polarized light and the photo of a set of object that is lighted by right-handed circular polarized light, introduce two sets of photos obtained and carry out polygon modeling and texture preparation in the modeling software based on the image, can produce a set of no highlight texture image and a set of texture image that has the highlight that uses in the three-dimensional figure is played up, then regard as the highlight texture as the normal image, no highlight texture is as the diffuse image, through formula normal-diffuse ═ specula, can obtain the special texture image, the cycle of three-dimensional preparation has been shortened greatly, the labor cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a three-dimensional image acquisition system according to the present invention;
fig. 2 is a schematic structural diagram of a camera according to the present invention;
fig. 3 is a schematic structural diagram of an LED light source according to the present invention;
fig. 4 is a schematic structural diagram of the rotating platform of the present invention.
Detailed Description
The utility model provides a three-dimensional image acquisition system, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are only for explaining the present invention, and are not intended to limit the present invention, and the embodiments described in the present invention are only a part of the embodiments, and not all embodiments, and other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to the specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other.
In the process of rendering three-dimensional graphics and generating images, a surface texture image needs to be given to a three-dimensional model. However, optical information of texture image materials obtained by a general method contains specular reflection, but the texture materials used in the three-dimensional image rendering process need to be subjected to specular reflection separation to obtain two image materials, namely diffuse reflection (diffuse) and specular reflection (specular reflection), otherwise rendering results are not true and incorrect. At present, the separation method of highlight in an image is manually removed through image processing software, and the method for manufacturing a texture image material without highlight (specular reflection) greatly depends on the skill of a manufacturer, and in some cases, the highlight component in the image cannot be completely and correctly removed, and the accuracy is low. The method greatly limits the authenticity of the three-dimensional rendering effect, and has long working period and high labor cost.
Referring to fig. 1, in order to solve the above technical problem, the present invention provides a three-dimensional image capturing system, which comprises a plurality of supports 10 surrounding the object to be shot, and an LED light source 20 and a camera 30 arranged on the supports at intervals, referring to fig. 2, wherein a polarization lens 40 is installed on the camera. Particularly, the utility model discloses a three-dimensional image acquisition system is including the camera of shooting usefulness and the LED light source of illumination usefulness, wherein, camera and LED light source are placed on 360 degrees annular matrix support, and camera and LED light source set up each other at the support at interval (the camera can not be placed again in the adjacent position about the upper and lower of camera promptly, LED light source can not be placed in the adjacent position about the same LED light source about, the benefit of doing so lies in that the light of each camera lens each side is even, the object picture effect of shooing is better. In a preferred embodiment, the utility model discloses technical scheme shoots the top of object and is provided with the stores pylon, is provided with a plurality of LED light sources on the stores pylon to guarantee that the all directions homoenergetic of shooting the object can be illuminated by light, obtain more details of shooting the object.
The polarizer is arranged in the polarization lens, is also called a polarizer and is a color filter, the color removal function of the polarizer is to selectively allow light vibrating in a certain direction to pass through, and is commonly used for eliminating or weakening strong reflection on a non-metal surface in color and black-and-white photography so as to eliminate or lighten light spots, and the polarizers are two, one is a Linear Polarizer (LPL); the other kind is Circular Polarizer (CPL), because LPL can influence photometry and autofocus, be unsuitable for the higher camera of degree of automation to use, consequently, the utility model discloses preferred circular polarizer of polarizer among the technical scheme, the outward appearance of circular polarizer is grey, is formed by a slice linear polarizer and a slice quarter wave plate veneer, and the optical axis of this quarter wave plate forms 45 jiaos with the polarized light vibration direction of linear polarizer, and light penetrates into for forward from one section of linear polarizer, penetrates into for backward from quarter wave plate one end, and forward directive circular polarizer's natural light, successively pass through behind linear polarizer and the quarter wave plate, becomes circular polarized light. According to the different relative orientation when the polarization direction of the linear polarizer and the optical axis of the quarter plectrum form an included angle of 45 degrees, the right-handed circularly polarized light or the left-handed circularly polarized light can be generated.
The utility model discloses a three-dimensional image acquisition system is owing to install the polarizing lens on the camera, through the polarization angle who adjusts the polarizing lens, the utility model discloses a three-dimensional image acquisition system can utilize two sets of different polarized light to shoot respectively into two sets of photo data that have different illumination information, carries out model and map with photo data again and rebuilds. A set of a image data (without highlights) and a set of B image data (with highlights) are finally obtained. The data without highlight (specular reflection) can be used for making a diffuse texture used in three-dimensional graphic rendering, the data with the highlight texture can be used for making normal data used in the three-dimensional graphic rendering, and the image data of the normal texture can be obtained by subtracting the image data of B and the image data of A through a formula normal-diffuse.
Referring to fig. 2 and 3, in a preferred embodiment, the LED light source and the camera are both mounted on the support via a pan and tilt head 50. The tripod head is a supporting device for mounting and fixing the camera and the LED light source in the technical proposal of the utility model, the tripod head is uniformly distributed on the bracket and is divided into a fixed tripod head and an electric tripod head, the camera can only adjust the horizontal and pitching angles of the camera when being mounted on the fixed tripod head, the electric tripod head is suitable for scanning a large range, the shooting range of the camera can be enlarged, the electric tripod head rotates by a motor, the motor can accurately run and position after receiving a control signal, thereby being convenient for the shooting operation, preferably, the tripod head adopted in the utility model is the electric tripod head, the electric tripod head is driven by a stepping motor, the stepping motor is an open-loop control element for converting an electric pulse signal into an angular displacement or a linear displacement, and under the condition of non-overload, the rotating speed and the stopping position of the stepping motor only depend on the frequency and the pulse number of the pulse signal, the stepping motor is driven to rotate by a fixed angle according to a set direction when a stepping driver receives a pulse signal, the stepping motor is called as a stepping angle, the stepping motor rotates by one step at the fixed angle, the angular displacement can be controlled by controlling the number of pulses, the aim of accurate positioning is fulfilled, the rotating speed and the acceleration of the motor can be controlled by controlling the pulse frequency, the aim of speed regulation is fulfilled, and more accurate positioning can be realized by the electric holder controlled by the stepping motor.
Referring to fig. 3, in a preferred embodiment, the LED light source has a liquid crystal optical shutter 60 mounted thereon. The LED light source in the technical scheme is provided with the liquid crystal optical shutter, the liquid crystal optical shutter can adjust the polarization state (left rotation or right rotation) of light emitted by the LED light source, the liquid crystal optical shutter has incomparable performance advantages in the application of an optical switch and polarization state rotation which need to have fast optical response time, and the liquid crystal optical shutter has the characteristics of ultrahigh speed, high-purity linearly polarized light output, large extinction ratio and the like by utilizing the fast response characteristic of a liquid crystal material and combining with an advanced polarization technology. The arrangement of ferroelectric liquid crystal molecules is controlled by changing the driving voltage applied to the liquid crystal optical shutter, so that the rotation of the polarization state of 0-90 degrees can be realized for the incident light in the linear polarization state, and the on-off control of light can be realized after the light with the rotating polarization direction passes through a precise linear polarizer placed at a certain angle.
In a preferred embodiment, the liquid crystal optical shutter is connected to a control device. In the specific implementation process, the utility model discloses technical scheme's liquid crystal optical shutter chooses for use the FLC series liquid crystal optical shutter of American Meadowlark Optics company, and FC-010 controller is chosen for use to supporting controller, and FC-010 controller is that Meadowlark carries out the ideal high performance controller optimized to liquid crystal optical shutter specially, and response speed 100 mus, big light aperture 17.78mm, available wavelength range 400 once more 800μm.
In a preferred embodiment, 12 brackets are arranged, and adjacent brackets are arranged at equal intervals. Particularly, the utility model discloses support among the technical scheme forms circular matrix around shooting the object, and the support is evenly laid circular matrix is last, and the contained angle between two adjacent supports and the centre of a circle is 30 degrees, lays under the condition of density at this support, shoots the three-dimensional sampling number preferred of object, the construction of the later stage model of being convenient for, of course, the utility model discloses support among the technical scheme also can form such as square matrix and other polygon matrixes, and the quantity of support also can be selected according to the needs of reality to reach best sampling effect.
In a preferred embodiment, a rotating platform is arranged at the bottom of the shooting object.
Referring to fig. 2, in a preferred embodiment, the rotary platform includes a table body 80, a driving motor 90 fixedly connected to the table body, and a turntable 100 connected to the driving motor. Specifically, the bottom of the rotating platform is provided with a driving motor, the turntable is used for placing objects, the turntable is driven to rotate by the driving motor, the driving motor is also connected with a driving motor control system, is connected with a computer through a driving motor control system, the driving motor control system comprises a DSP chip and a peripheral circuit and is used as a link for connecting a driving motor rotating platform and an image acquisition and processing system in the computer, the driving motor control system controls the rotation of a driving motor to realize the rotation degree adjustment and the switch control of the driving motor rotating platform, the image acquisition and processing system and the motor control system adopt serial communication, the image acquisition and processing system sends instructions to the motor control system, the rotation speed of the driving motor is controlled by the motor control system, so that the rotation speed of the driving motor is synchronous with the image acquisition in the image acquisition and processing system.
In a preferred embodiment, the LED light source is a ring LED light source. The ring shape LED lamps and lanterns have bigger light-emitting area, shine to the object surface, the luminance on object surface is more even, has better illuminating effect, and is concrete, the utility model discloses the equidistant circumference array of a plurality of LED lamp pearls of the structure inside of the annular LED light source that adopts among the technical scheme installs on annular lighting fixture, and the light intercrossing of each LED lamp pearl mixes the back, mixes and eliminates the glare once more through annular lamp cover, finally forms ring shape face luminous effect, and the quantity and the range interval of LED lamp pearl can be selected according to the needs of reality in the actual process.
In a preferred embodiment, the LED light source is a color temperature changing LED light source. In order to satisfy the requirement based on the modeling software of image, the utility model discloses LED light source in the technical scheme chooses for use the LED light source of becoming the colour temperature, the utility model provides an LED that has cold colour temperature in the LED light source, the LED of warm colour temperature, alternating current power supply, switch and can change polarity's microcontroller's control circuit, the number of times that adopts switch to open and break off is as the parameter that the LED light source of controlling two kinds of different colour temperatures changed, facilitate the use, and the temperature LED control circuit structure that discolours of this kind of structure can design simpler, the compiling of microcontroller procedure is more swift, the colour temperature control range of the temperature LED light source that discolours is bigger, can satisfy the requirement of the different colour temperature formation of image of object.
In a preferred embodiment, the camera is connected to a computer. The utility model discloses install the modeling software based on the image in technical scheme's the computer, realize the three-dimensional polygon modeling and the texture data preparation of object through this modeling software, concrete image-based modeling software's application method is the conventional technical means in this field, the utility model discloses do not describe in detail, in concrete implementation operation process, liquid crystal optical shutter's controller and LED light source also link to each other with the computer and control through the computer, are provided with corresponding programme-controlled system in the computer and control each equipment, of course, the utility model discloses other equipment replacements such as panel, cell-phone also can be by the computer among the technical scheme.
The utility model discloses three-dimensional image acquisition system's concrete shooting process does: the program control system in the computer is used for controlling the LED switch and brightness adjustment, the parameter adjustment of the camera, the switch shooting and the rotation angle of the tripod head operation, the program control system in the computer is used for adjusting the focal points of all the cameras to be aligned with a target object, unifying the parameters of the camera such as the focal length, the aperture size, the shutter speed and the like, and the polarization angles of the polarizers arranged in front of the camera lenses are adjusted to be consistent polarization angles so as to ensure that one type of polarized light is filtered. When the program control system is used for controlling the camera to shoot for the first time, the LED lamps on the periphery (namely the LED lamps adjacent to the upper side, the lower side and the left side) are synchronously controlled to be lightened, the polarization mode of the liquid crystal optical shutter type polaroid is in left-handed circular polarization, which is the data content of a first set of photos, after the camera finishes shooting for the first time, shooting for the second time is carried out, the LEDs on the periphery are synchronously controlled to be lightened, and the polarization mode of the liquid crystal optical shutter type polaroid is in right-handed circular polarization, which is the data content of a second set of photos. And the rest can be analogized to finish the shooting of all the cameras, and all the shooting work is finished within 1-2 seconds so as to ensure that the target object has no overlarge surface change. The obtained first set of photo data and the second set of photo data are respectively imported into a modeling software (such as an agisoft photoscan software) based on images for modeling polygons and manufacturing textures, so that an A model and an A texture, and a B model and a B texture are obtained. And obtaining a C map by the formula A-B-C.
To sum up, the utility model provides a three-dimensional image acquisition system, owing to be provided with LED light source and the camera of mutual interval on the support that encircles the setting of shooting object, and install polarizing lens on the camera, through the polarization angle who adjusts the polarizer, the three-dimensional image acquisition system of the utility model can shoot a set of shooting object three-dimensional photo data that has left-handed circular polarized light and a set of shooting object three-dimensional photo data that has right-handed circular polarized light, introduce two sets of photo data that obtain into and carry out texture preparation and polygon modeling in the modeling software of picture based on, can make a set of texture image that does not have the highlight and a set of texture image that has the highlight that use in the three-dimensional figure is played up, then regard as the normal image with the highlight texture, the non-highlight texture as the differential image, through the formula normal-differential as special, the special texture image can be obtained, the manufacturing period is greatly shortened, and the labor cost is reduced.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The three-dimensional image acquisition system is characterized by comprising a plurality of supports arranged around a shot object, an LED light source and a camera, wherein the LED light source and the camera are arranged on the supports at intervals, and a polarization lens is arranged on the camera.
2. The three-dimensional image acquisition system according to claim 1, wherein the LED light source and the camera are both disposed on the support through a pan-tilt head.
3. The three-dimensional image acquisition system according to claim 1, wherein the LED light source is mounted with a liquid crystal optical shutter.
4. The three-dimensional image acquisition system according to claim 3, wherein the liquid crystal optical shutter is electrically connected to the controller.
5. The three-dimensional image acquisition system according to claim 1, wherein the number of the brackets is 12, and the adjacent brackets are arranged at equal intervals.
6. The three-dimensional image acquisition system according to claim 1, wherein a rotating platform is arranged at the bottom of the shooting object.
7. The three-dimensional image acquisition system according to claim 6, wherein the rotating platform comprises a table body, a driving motor fixedly connected to the table body, and a turntable connected to the driving motor.
8. The three-dimensional image acquisition system according to claim 1, wherein the LED light source is a ring LED light source.
9. The three-dimensional image acquisition system according to claim 1, wherein the LED light source is a color temperature changing LED light source.
10. The three-dimensional image acquisition system according to claim 1, wherein the camera is connected to a computer.
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| CN201921302993.2U CN210327828U (en) | 2019-08-09 | 2019-08-09 | Three-dimensional image acquisition system |
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| CN201921302993.2U CN210327828U (en) | 2019-08-09 | 2019-08-09 | Three-dimensional image acquisition system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112696595A (en) * | 2021-01-14 | 2021-04-23 | 盛荣华 | Full-automatic surrounding type image support |
-
2019
- 2019-08-09 CN CN201921302993.2U patent/CN210327828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112696595A (en) * | 2021-01-14 | 2021-04-23 | 盛荣华 | Full-automatic surrounding type image support |
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