CN204350168U - A kind of three-dimensional conference system based on line holographic projections technology - Google Patents

Abstract

The utility model discloses a three-dimensional conference system based on holographic projection technology, which includes a main control system and a conference system. The main control system includes a cloud server and a host computer. The system is connected through a network video server and a cloud server; the acquisition system includes an acquisition extension and at least one acquisition group, and the acquisition group includes network cameras arranged in four equally divided positions on the same horizontal plane; the playback system includes an extension and at least one A play group, the play group includes a four-sided projection screen composed of four holographic films and four displays arranged on the top or bottom of the front of the holographic film; the network cameras are independently connected to the acquisition extension, and the display is connected to the play extension Connect independently. The utility model enables remote products or scenes to be reproduced synchronously and three-dimensionally at multiple conference sites, so that the network conference display is more three-dimensional and intuitive, and the discussion efficiency is improved.

Description

A three-dimensional conference system based on holographic projection technology

technical field

The utility model relates to the communication field, in particular to a three-dimensional conference system based on holographic projection technology.

Background technique

The current remote conference system only communicates through voice, flat video, etc. If a conference site needs to display products to other conference sites, the display method is too monotonous, and it is difficult to clearly display the whole picture or details of the product. Intuitive poor. Holographic projection technology is a recording and reproduction technology that uses the principles of interference and diffraction to record and reproduce the real three-dimensional image of an object. The existing holographic projection technology requires multi-angle video recording of the product first, and then multiple video files are synthesized into one video source through software technology, and then three-dimensional projection imaging is performed through projection equipment. Using holographic projection technology, the product can be reproduced in three dimensions at the remote meeting site, effectively enhancing the intuitive experience of remote participants in the remote meeting. However, the processing process of holographic projection imaging is relatively complicated, and the image acquisition and output cannot be synchronized, and the timeliness and interaction are poor.

In order to facilitate the participants to have a more intuitive experience of the products remotely displayed through the network and participate in real-time interactive discussions during the teleconference, and to improve the efficiency of the teleconference, a three-dimensional conference system based on holographic projection technology is proposed.

Utility model content

The purpose of this utility model is to provide a three-dimensional conference system based on holographic projection technology, which has the function of synchronous three-dimensional reproduction of remote products or scenes at multiple conference sites, so that the display in the network conference is more three-dimensional and intuitive, and it is convenient for participants to participate in real-time Interactive discussion, thereby improving the efficiency of remote meetings.

The utility model is realized through the following technical solutions: a three-dimensional conference system based on holographic projection technology, characterized in that: it includes a main control system and a conference system; the main control system includes a cloud server and a host connected to each other; the conference The system includes a collection system, a playback system and a network video server, the network video server and the cloud server are connected through the Internet, the collection system and the playback system are connected through the network video server and the cloud server, and the playback system is set inside the meeting site; the collection system It includes a collection extension and at least one collection group, the collection group includes four network cameras, and the four network cameras are arranged in four equal positions in the same horizontal plane; the playback system includes a playback extension and at least one playback group, and the playback group includes A four-sided projection screen and four monitors, the four-sided projection screen is composed of four holographic films inclined to the horizontal plane, and the four monitors are arranged on the top or bottom of the front of the four holographic films; the four network cameras are respectively connected to the acquisition The extension is connected independently, and the four monitors are independently connected to the playback extension.

In the utility model, the host is used to process various requests between multiple conference systems and the main control system; the cloud server is used to realize high-speed data transmission between multiple conference systems; the acquisition system is used to Gather the video source; the playback system is used to play the video source; the network video server is used for encoding, decoding, storage, network transmission, etc. of the video source; the acquisition extension is used to control the synchronous acquisition of the video source; the playback The extension is used to control the synchronous playback of video sources. Multiple conference systems obtain request permission through the host and establish a connection relationship with the main control system. The video source collected by one collection system is sent to the cloud server through the network video server, and then sent to multiple playback systems by the cloud server for playback, realizing remote conferences Synchronous display of multiple places in the system.

In the prior art, it is necessary to use 3D software to synthesize holographic images from pre-recorded video sources and play them through laser projectors, so as to realize the stereoscopic reproduction of objects or scenes. On the one hand, the production of holographic images requires more than 100 times the amount of information processed by ordinary imaging, which also puts forward high requirements for the shooting, processing and transmission platforms; on the other hand, the reproduction of holographic projections must wait until the holographic images are produced. Playing, real-time transmission in different places cannot be realized, and the timeliness is poor.

The acquisition system described in the utility model includes an acquisition extension and at least one acquisition group, the acquisition group includes four network cameras, and the four network cameras shoot simultaneously to form four associated but independently output video streams; the playback system includes a playback extension And at least one play group, the play group includes a four-sided projection screen and four displays to form a holographic projection device, the four displays correspond to a holographic film on the four-sided projection screen, and the four displays corresponding to the positions simultaneously play four video sources, according to The principle of holographic projection imaging can present a three-dimensional image. The video stream collected by one collection group is sent to the cloud server through the network video server, and then sent to multiple playback groups by the cloud server for simultaneous playback, so as to realize the function of three-dimensionally displaying remote products or scenes at multiple conference sites in the network conference system at the same time .

This holographic projection process does not require synthesis processing, and the collected video streams are directly transmitted through the network and played in real time to achieve three-dimensional imaging. It has the function of synchronous three-dimensional reproduction of remote products or scenes at multiple conference sites, making the display in network conferences more three-dimensional. Intuitive, convenient for participants to participate in real-time interactive discussions, thereby improving the efficiency of remote conferences.

Further, the four-sided projection screen includes a pyramid-type holographic screen and a patio-type panoramic screen, the pyramid-type holographic screen is located in the middle of the conference site, and the patio-type panoramic screen surrounds the conference site; the holographic film of the pyramid-type holographic screen is a triangular For the holographic film, four identical triangular holographic films form a quadrangular pyramid; the holographic film of the patio panoramic screen is a trapezoidal holographic film, and four trapezoidal holographic films form a quadrangular pyramid.

In the utility model, the pyramid-type holographic curtain is in the shape of a quadrangular pyramid as a whole, and the patio-type panoramic curtain is in the shape of a quadrangular pyramid-shaped patio as a whole. The four network cameras of the acquisition group are arranged in four directions equally divided on the same horizontal plane. When shooting the appearance of the product, the four network cameras shoot from all sides to the center at the same time. The imaging effect of the product appearing in the center of the conference site; when shooting the scene, four network cameras shoot from the center to the periphery at the same time, and the acquired video source is imaged with a patio-style panoramic screen to obtain a scene with a sense of depth appearing around the conference site imaging effect. Both types of imaging are based on the principle of holographic projection imaging, and only by changing the structure of the four-sided projection screen can the visual experience of the participants be changed. The holographic projection technology is a well-known technology, so it will not be repeated here.

Further, the triangular holographic film is in the shape of an isosceles triangle, the length ratio of the base to the waist is α, 5:4.5≤α≤5:4.

In the utility model, the holographic projection is taken from four equally divided directions when acquiring the video source, and the real-time images are sent to the display screens in the four directions corresponding to the positions, and the images or dynamic images in the four display screens are gathered together , forming a stereoscopic image with real dimensional space. According to software simulation analysis and analysis of a large number of experimental data, it is known that when the length ratio of the base to the waist of the isosceles triangular holographic film is 5:4.33, the aspect ratio of the virtual image presented is closest to the ratio of the real object. Considering the limitation of the installation space of the four-sided projection screen, the influence of the installation accuracy on the cost and other factors, when the visual requirements are not strict, when the length ratio of the base to the waist of the triangular holographic film of the isosceles triangle is 5:4.5- When it is between 5:4, it can already guarantee better visual effects and control expenditure costs.

Further, the trapezoidal holographic film is an isosceles trapezoid, and the inclination angle between the trapezoidal holographic film and the horizontal plane is β, 40°≤β≤50°.

In the utility model, the trapezoidal holographic film is isosceles trapezoidal, the opposite trapezoidal holographic film is completely equal, the length of the waist of the adjacent trapezoidal holographic film is equal and the angle between the waist and the bottom edge is equal, the limitation of the above characteristics is used to ensure four The aspect ratio of the image projected on the trapezoidal projection film is consistent, which makes the panoramic picture more coordinated. According to software simulation analysis and analysis of a large number of experimental data, it is known that when the inclination angle of the isosceles trapezoidal trapezoidal holographic film to the horizontal plane is 45°, the aspect ratio of the virtual image presented is closest to the proportion of the real scene. Considering the limitation of the installation space of the four-sided projection screen, the influence of installation accuracy on the cost and other factors, when the visual requirements are not strict, when the inclination angle between the trapezoidal holographic film and the horizontal plane is between 40°-50°, it can already guarantee a relatively Good visual effects while controlling expenditure costs.

Further, both the triangular holographic film and the trapezoidal holographic film are made of acrylic or glass plates with a transparency greater than 90%.

Both the triangular holographic film and the trapezoidal holographic film in the utility model are preferably acrylic plates and glass plates, the imaging effect is clear and bright, and the maintenance cost is low.

Further, the surface of the acrylic plate or the glass plate is covered with a holographic film.

The holographic film is a holographic projection film based on comprehensive diffraction pattern technology, which allows the viewer to see the background objects through the film while maintaining a clear image. The holographic film is a transparent film, which is tightly bonded to the surface of the acrylic plate or glass plate without air bubbles. The utility model uses an acrylic plate or a glass plate covered with a holographic film. No matter whether the light source is sufficient or not, the viewer can directly watch the virtual image through the front and back sides at the same time and from multiple angles, so that the items displayed on the meeting site Or the scene is more three-dimensional.

Further, the collection system also includes audio equipment; the playback system also includes audio equipment.

The addition of radio equipment can transmit the sound of the collected scene to the playback system through a dedicated channel, and play it through the audio equipment, so that the remote participants can experience the dual experience of vision and hearing, making the remote conference more three-dimensional. Adding audio transmission and playback functions can display products or scenes more comprehensively and improve the efficiency of discussions in the process of remote conferences.

Further, the display adopts an LED display screen.

In the utility model, the display adopts an LED display screen, and the picture effect presented is excellent, the technology is relatively mature, and the cost is beneficial to be controlled.

Further, the network camera is a network high-definition camera.

In the utility model, a network high-definition camera is adopted, and the image quality effect of the collected video or image is clearer and more three-dimensional after reproduction.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) This utility model is based on holographic projection technology and network technology to realize the real-time synchronous three-dimensional presence of remote products or scenes in multiple conference sites in the network conference system, which greatly enhances the participants' intuition for the displayed items or scenes in the remote conference Feel and communicate and interact to improve the efficiency of discussions.

(2) The utility model realizes holographic projection imaging without three-dimensional software synthesis processing and the amount of data to be processed in the process is small, which can ensure the synchronous transmission of network data.

(3) The utility model has lower requirements on the configuration of shooting equipment, display equipment and other equipment, which saves costs.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a topological diagram of the utility model.

Fig. 3 is a schematic diagram of the position and structure of the pyramid-style holographic screen and the network camera when the spire is upward.

Fig. 4 is a schematic diagram of the position and structure of the pyramid-style holographic screen and the network camera when the tip is downward.

Fig. 5 is a schematic diagram of the location structure of the patio panoramic screen and the network camera when the opening is large.

Fig. 6 is a schematic diagram of the opening hours of the patio-type panoramic screen and the position and structure of the network camera.

Fig. 7 is a structural schematic diagram of the playback system installed at the conference site.

Among them: 1—collection system, 111—holographic collection extension, 112—panoramic collection extension, 121—first network camera, 122—second network camera, 123—third network camera, 124—fourth network camera, 125—first Fifth network camera, 126—sixth network camera, 127—seventh network camera, 128—eighth network camera, 13—radio equipment, 2—playback system, 211—holographic playback extension, 212—panoramic playback extension, 221—first 1 display, 222—second display, 223—third display, 224 fourth display, 225—fifth display, 226—sixth display, 227—seventh display, 228—eighth display, 23—pyramid holographic screen , 24—patio panoramic screen, 25—audio equipment, 3—network video server, 4—cloud server, 5—host.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example 1:

A three-dimensional conference system based on holographic projection technology in this embodiment, as shown in Figure 1, is mainly realized through the following technical solutions: it includes a main control system and a conference system; the main control system includes a cloud server 4 connected to each other And main frame 5; Described meeting system comprises collection system 1, playback system 2 and network video server 3, network video server 3 and cloud server 4 are connected by Internet, collection system 1 and playback system 2 pass network video server 3, cloud server 4 to connect, the playback system 2 is set inside the meeting site; the acquisition system 1 includes an acquisition extension and at least one acquisition group, the acquisition group includes four network cameras, and the four network cameras are arranged in four equal parts in the same horizontal plane Orientation; the playback system 2 includes a playback extension and at least one playback group, the playback group includes a four-sided projection screen and four displays, the four-sided projection screen is made up of four holographic films that are inclined to the horizontal plane, and the four displays are arranged in four The top or bottom of the front of the block holographic film; the four network cameras are independently connected to the collection extension, and the four displays are independently connected to the playback extension.

In this embodiment, a network conference system is simultaneously connected to four conference sites A, B, C, and D for remote communication as an example. Each conference site is equipped with a conference system, and the collection system 1 in the conference system A collects products or The video stream of the scene, after encoding by the network video server 3, is sent to the cloud server 4 of the main control system through the Internet, and the host computer 5 of the main control system receives the video data of A conference system, B conference system, C conference system, and D conference system respectively. After the access request, the video stream is sent synchronously but independently to each network video server 3, and after being decoded by the network video server 3, it is sent to the playback system 2 for playback, so that four conference sites A, B, C, and D can be simultaneously held in A Three-dimensional display of products or scenes collected by the conference system, and real-time discussion and interaction with the help of the Internet to improve the efficiency of discussions. The transmission of various data between the main control system and the conference system can be carried out wirelessly through various wireless communication modules such as 3G/4G/WIFI, and can also be carried out through wired transmission through the CAT-5E bus.

As shown in Figure 2, the conference system of the present utility model comprises acquisition system 1, playback system 2 and network video server 3; Described acquisition system 1 comprises acquisition extension and at least one acquisition group; Described acquisition group comprises four network cameras, The four network cameras of the first network camera 121, the second network camera 122, the third network camera 123, and the fourth network camera 124 are arranged in four equally divided orientations in the same horizontal plane; the playback system 2 includes a playback extension and at least A play group; the play group includes a four-sided projection screen and four displays, the four-sided projection screen is made up of four holographic films that are inclined to the horizontal plane, the first display 221, the second display 222, the third display 223, the fourth display Display 224 four displays are arranged on the top or bottom of four holographic film fronts, four displays are located on the same plane and the display surface of the display screen is at an acute angle with the front of the four projection screens; the four network cameras are connected to the collection extension respectively Independent connection, the four monitors are independently connected to the playback extension, that is: the video stream collected by the first network camera 121 is sent to the first display 221 for playback, and the video stream collected by the second network camera 122 is sent to the second display 222 for playback 1. The video stream collected by the third network camera 123 is sent to the third display 223 for playback, the video stream collected by the fourth network camera 124 is sent to the fourth display 224 for playback, the first display 221, the second display 222, the third display 223. The fourth display 224. The pictures played in the four displays are different viewing angles of the same product or scene shot at the same time, and converged into a stereoscopic image after going through the four projection screens. Participants can intuitively see the whole picture of the exhibits through the four-sided projection screen without wearing other equipment. In this process, the data collected by the network camera does not need to be synthesized by 3D software and only needs to control the synchronous input and output of multiple video sources. Four common monitors are required to play the video source, which is convenient for maintenance and can effectively control the cost.

Example 2:

This embodiment is further optimized on the basis of the above embodiments. Further, the four-sided projection screen includes a pyramid-type holographic screen 23 and a patio-type panoramic screen 24. The pyramid-type holographic screen 23 is located in the middle of the meeting site, and the patio-type panoramic screen 24 Surrounding the conference site; the holographic film of the pyramid holographic curtain 23 is a triangular holographic film, and four identical triangular holographic films form a quadrangular pyramid; the holographic film of the patio panoramic screen 24 is a trapezoidal holographic film, and four The trapezoidal holographic film forms a quadrangular pyramid.

As shown in Figure 3, if the spire of pyramid type holographic screen 23 is upward in the utility model, then the display in the play group is all positioned at the unified plane of pyramidal type holographic screen 23 top spire side and the display face of display is downward, makes The front of the display surface and the holographic film is at an acute angle; as shown in Figure 4, if the spire of the pyramid holographic screen 23 is downward, the displays in the play group are all positioned at the same plane on the side of the spire at the bottom of the pyramid holographic screen 23 And the display surface of the display is upward, so that the display surface forms an acute angle with the front of the holographic film. As shown in Figure 5, if the opening of patio type panoramic screen 24 is big among the utility model, then the display in the play group is all positioned at the unified plane of patio type panoramic screen 24 tops and the display face of display is downward, makes display face and holographic film As shown in Figure 6, if the opening of patio type panoramic screen 24 is little, then the display in the play group is all positioned at the unified plane of patio type panoramic screen 24 bottom spire side and the display of display faces upwards, The display surface forms an acute angle with the front surface of the holographic film.

As shown in Figure 7, the pyramid-type holographic screen 23 is mainly used for remote synchronous reproduction of products, and the collection group used in conjunction with it is a holographic collection group, and the playback group is a holographic playback group; the first network camera 121, the second network camera 122 1, the third network camera 123, and the fourth network camera 124, the four network cameras are arranged in four equally divided positions in the same horizontal plane, and the four independent video streams are controlled by the holographic collection extension 111 and sent to the network video server 3 for remote data sharing The first display 221, the second display 222, the third display 223, and the fourth display 224 four displays are arranged at the top or bottom of the four holographic film fronts, and four independent video streams are sent to the display by the holographic playback extension 211 Play synchronously. In the utility model, if the patio type panoramic screen 24 is mainly used for remote synchronous reproduction of scenes, the collection group used in conjunction with it is a panoramic collection group, and the playback group is a panoramic playback group; the fifth network camera 125, the sixth network camera 126, The seventh network camera 127, the eighth network camera 128, four network cameras are arranged in four equal positions in the same horizontal plane, and four independent video streams are controlled by the panorama acquisition extension 112 and sent to the network video server 3 for remote data sharing; The fifth display 225, the sixth display 226, the seventh display 227, and the eighth display 228 are arranged on the top or bottom of the front of the four panoramic films, and the panoramic playback extension 212 sends four independent video streams to the displays for synchronization. play. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 3:

This embodiment is further optimized on the basis of the above embodiments. Further, the triangular holographic film is in the shape of an isosceles triangle, and the length ratio of its base to its waist is α, 5:4.5≤α≤5:4. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 4:

This embodiment is further optimized on the basis of the above embodiments. Further, the trapezoidal holographic film is an isosceles trapezoid, and the inclination angle between the trapezoidal holographic film and the horizontal plane is β, 40°≤β≤50°. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 5:

This embodiment is further optimized on the basis of the above embodiments. Further, the triangular holographic film and the trapezoidal holographic film are all made of acrylic or glass plates with a transparency greater than 90%. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 6:

This embodiment is further optimized on the basis of the above embodiments. Further, the surface of the acrylic plate or the glass plate is covered with a holographic film. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 7:

This embodiment is further optimized on the basis of the above embodiments. Further, the acquisition system 1 further includes a radio device 13 ; the playback system 2 further includes an audio device 25 . Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 8:

This embodiment is further optimized on the basis of the above embodiments, and further, the display adopts an LED display. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Embodiment 9:

This embodiment is further optimized on the basis of the foregoing embodiments, and further, the network camera is a network high-definition camera. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (9)

1. based on a three-dimensional conference system for line holographic projections technology, it is characterized in that: comprise master control system and conference system; Described master control system comprises interconnective cloud server (4) and main frame (5); Described conference system comprises acquisition system (1), Play System (2) and network video server (3), network video server (3) is connected by the Internet with cloud server (4), acquisition system (1) is connected by network video server (3), cloud server (4) with Play System (2), and it is on-the-spot inner that Play System (2) is arranged on meeting; Described acquisition system (1) comprises and gathers extension set and at least one collection group, and collection group comprises four web cameras, and four web cameras are respectively in four decile orientation in same level; Described Play System (2) comprises plays extension set and at least one broadcasting group, broadcasting group comprises a tetrahedral projection curtain and four displays, tetrahedral projection curtain is made up of four pieces of holographic films horizontal by inclination angle, and four displays are respectively in top or the bottom in four pieces of holographic film fronts; Described four web cameras respectively with collection extension set separate connection, four displays respectively with broadcasting extension set separate connection.

2. a kind of three-dimensional conference system based on line holographic projections technology according to claim 1, it is characterized in that: described tetrahedral projection curtain comprises the holographic curtain (23) of pyramid and uphill opening type panorama curtain (24), the holographic curtain (23) of pyramid is positioned at the middle part at meeting scene, and uphill opening type panorama curtain (24) is centered around the on-the-spot surrounding of meeting; The holographic film of the holographic curtain (23) of described pyramid is triangle holographic film, four pieces of identical triangle holographic film composition rectangular pyramids; The holographic film of described uphill opening type panorama curtain (24) is trapezoidal holographic film, four pieces of trapezoidal holographic film composition tetragonous cone tables.

3. a kind of three-dimensional conference system based on line holographic projections technology according to claim 2, is characterized in that: described triangle holographic film is isosceles triangle, and the length of its base and waist is than being α, 5:4.5≤α≤5:4.

4. a kind of three-dimensional conference system based on line holographic projections technology according to claim 2, is characterized in that: described trapezoidal holographic film is isosceles trapezoid, and the inclination angle of trapezoidal holographic film and horizontal plane is β, 40 °≤β≤50 °.

5. a kind of three-dimensional conference system based on line holographic projections technology according to any one of claim 2-4, is characterized in that: described triangle holographic film, trapezoidal holographic film all adopt transparency to be greater than acrylic board or the glass plate of 90%.

6. a kind of three-dimensional conference system based on line holographic projections technology according to claim 5, is characterized in that: described acrylic board or glass pane surface are coated with holographic film.

7. a kind of three-dimensional conference system based on line holographic projections technology according to any one of claim 1-4, is characterized in that: described acquisition system (1) also comprises radio equipment (13); Described Play System (2) also comprises stereo set (25).

8. a kind of three-dimensional conference system based on line holographic projections technology according to any one of claim 1-4, is characterized in that: described display adopts LED display.

9. a kind of three-dimensional conference system based on line holographic projections technology according to any one of claim 1-4, is characterized in that: described web camera is network high-definition camera.