CN108093201A - A kind of video conference terminal and system - Google Patents
A kind of video conference terminal and system Download PDFInfo
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- CN108093201A CN108093201A CN201810069356.9A CN201810069356A CN108093201A CN 108093201 A CN108093201 A CN 108093201A CN 201810069356 A CN201810069356 A CN 201810069356A CN 108093201 A CN108093201 A CN 108093201A
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- polaroid
- camera
- projection screen
- holographic projection
- projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Abstract
The invention belongs to video technology field more particularly to a kind of video conference terminal and systems.The terminal includes projector, transparent holographic projection screen and camera.Its projector receives the vision signal from other side, and vision signal is changed into projected light beam and is projected in holographic projection screen；While user watches holographic projection screen, camera is through the vision signal of holographic projection screen shooting user, and the vision signal is sent to the video conference terminal of other side, it is exchanged so as to fulfill video conference, in addition, the camera of the present invention is arranged at the eyes of user into the expression in the eyes that in same horizontal line, can take user, so as to allow video conference both sides that can watch mutual expression in the eyes state in holographic projection screen, so as to fulfill intimate real Eye contact.Therefore the present invention solves the problems, such as that existing video conferencing system cannot carry out Eye contact.
Description
Technical field
The invention belongs to video technology field more particularly to a kind of video conference terminal and systems.
Background technology
Using existing video conferencing system, video conference participants can be realized by transmitting audio or video signal
It is in communication with each other.
Existing video conferencing system, camera are generally positioned at position above or below display screen, so design, and use
While display screen is watched, camera can be from the stop of display screen, and takes user at family.But in this feelings
Under condition, since camera is normally at the either above or below of display screen, user's sight is direct-view display screen rather than direct-view
Camera, and then user's expression in the eyes that camera takes is strabismus.For example, when carrying out video communication using mobile phone, user
Often look at mobile phone screen straight, and camera is located above mobile phone screen, so the user's sight taken is inclined.Due to
Mobile phone screen is smaller, therefore inclination of sighting line sense organ unobvious, and when carrying out video conference, general display screen is larger, therefore uses
The display scale of family on a display screen is also larger, and so above-mentioned expression in the eyes inclination conditions will be amplified, is very directly perceived, therefore, meeting
Both sides can not actually carry out Eye contact exactly.
In addition, existing video conferencing system, often the distance between user and display screen/camera meet farther out, this
Sample, when user's sight mode tilts, due to distant, the gap tilt effect being eventually displayed on display screen is not obvious.
But since standoff distance is too far, meeting both sides can not actually accomplish the effect for having closely face-to-face meetings, also can not be real
Now expression in the eyes is linked up exactly.
In conclusion the vision signal of existing video conferencing system transmission is all often the effect in plane, Wu Fashi
Eye contact between existing meeting participant, it is impossible to the interactive experience of higher quality is delivered for meeting participant both sides.
The content of the invention
The present invention provides a kind of video conference terminal and systems, it is intended to which solving existing video conferencing system cannot carry out
The problem of Eye contact.
In order to solve the above technical problems, the present invention is achieved in that the present invention provides a kind of video conference terminal, it should
Terminal includes projector, holographic projection screen and camera：
The holographic projection screen is arranged between user and the camera, and the projector is arranged at the holographic throwing
The arbitrary one side of shadow screen；The holographic projection screen is transparent holographic projection screen；And the camera is arranged at and institute
The eyes of user are stated into same horizontal line, to shoot the expression in the eyes of the user；
The vision signal for receiving the vision signal of meeting the opposing party transmission, and is changed into throwing by the projector
Shadow light beam is projected in the holographic projection screen, and the projected light beam is imaged display in the holographic projection screen；
The camera for shooting the vision signal of the user through the holographic projection screen, and is regarded by described in
Frequency signal is sent to the video conference terminal of other side.
Further, the terminal further includes the first polaroid and the second polaroid：First polaroid is placed in described
The camera lens front end of projector, second polaroid are placed in the camera lens front end of the camera, first polaroid with it is described
Second polaroid is line polarisation piece or is rotatory polarization piece；
If first polaroid and second polaroid are line polarisation piece, first polaroid and described the
The polarisation direction of principal axis of two polaroids is orthogonal；If first polaroid and second polaroid are rotatory polarization piece,
First polaroid is opposite mutually with the light transmission rotatory polarization direction of second polaroid.
Further, if the video conference terminal is used for 2D video conferences, the camera is 2D cameras, described
Projector is 2D projectors, and first polaroid and the second polaroid are static polaroid；
First polaroid for filtering the projected light beam that the projector goes out, makes and first polaroid
The identical projected light beam of polarization state passes through；
Second polaroid for filtering the projected light beam that the projector goes out, makes and first polaroid
The identical projected light beam of polarization state cannot be by, and makes from the user to the camera, inclined with second polaroid
The identical light beam of polarization state passes through.
Further, if the video conference terminal is used for 3D video conferences, the projector is 3D projectors, described
Camera is 3D cameras, and first polaroid and the second polaroid are dynamic polarized regulator part, and the two polarization state
It is asynchronous；
First polaroid, it is synchronous when projecting left images with the projector, for being projected to the holographic throwing
The projected light beam on shadow screen is sequentially adjusted to the polarization state of left and right image；
Second polaroid, with the projector project left images when it is asynchronous, be projected to the holography for blocking
Left and right image on projection screen, and make to pass through from the user to the light beam of the camera.
Further, the system also includes time-division polarisation synchronous light lamp, the polarization state with second polaroid
It is synchronous, and the time-division polarisation synchronous light lamp is arranged above the holographic projection screen.
Further, the terminal further includes face identification device, and the face identification device is used at reference object
When activity, face display location is locked to be shown the position of face and the camera in shooting process
Position is consistent.
Further, the holographic projection screen is more than 50% line holographic projections nanometer display screen for transparency.
Further, the size of the holographic projection screen is more than 1m*1m, so that Projection Display goes out the true shape of user
State ratio.
Further, the distance between the user and the holographic projection screen are 0.5m to 3m.
In order to solve the above technical problems, the present invention also provides a kind of video conferencing system, the system includes above-mentioned
Video conference terminal.
Compared with prior art, the present invention advantageous effect is：
A kind of video conference terminal provided by the invention, the terminal include projector, transparent holographic projection screen and take the photograph
As head.Its projector receives the vision signal from other side, and vision signal is changed into projected light beam and is projected to line holographic projections
On screen；While user watches holographic projection screen, camera shoots the vision signal of user through holographic projection screen,
And the vision signal is sent to the video conference terminal of other side, it is exchanged so as to fulfill video conference, in addition, the camera shooting of the present invention
Head is arranged at the eyes of user into the expression in the eyes that in same horizontal line, can take user, so as to allow video conference both sides all
Mutual expression in the eyes state can be watched in holographic projection screen, so as to fulfill intimate real Eye contact.Therefore this hair
It is bright to solve the problems, such as that existing video conferencing system carry out Eye contact.
Description of the drawings
Fig. 1 is a kind of video conference terminal schematic diagram that first embodiment of the invention provides；
Fig. 2 is a kind of video conference terminal schematic diagram that second embodiment of the invention provides；
Fig. 3 is the 3D synchronizations and asynchronous signal schematic diagram that second embodiment of the invention provides.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As one embodiment of the present invention, as shown in Figure 1, be a kind of video conference terminal provided by the invention, it should
Terminal includes projector 101, holographic projection screen 102 and camera 103.The video conference terminal that the present embodiment is provided is main
It applies in 2D video conferencing systems, therefore, projector 101 is 2D projectors, and camera 103 is 2D cameras.
Mutual alignment between 103 three of projector 101, holographic projection screen 102 and camera is as shown in Figure 1, be：Entirely
Breath projection screen 102 is arranged between user A and camera 103, and projector 101 is arranged at the arbitrary of holographic projection screen 102
One side can be located at the same side with user A, can also be arranged at the other side opposite with user (i.e. where camera 103 that
One side), the installation position of the projector 101 is mainly set according to the characteristic of holographic projection screen 102.In the present embodiment,
Projector 101 and user A are located at the same side of holographic projection screen 102, and camera 103 be arranged at the eyes of user A into
On same horizontal line L.
Holographic projection screen 102 is transparent holographic projection screen, in the present embodiment, using transparency more than 50%
Line holographic projections nanometer display screen (the line holographic projections nanometer display screen for preferably, being more than 80% using transparency), such as：Model
The screen of NanoAR.Since this terminal employs transparent holographic projection screen 102, camera 103 can be arranged at
The opposite side of holographic projection screen 102, and in shooting process, 102 stop will not be subject to.Also because for this purpose, can will image
First 103 are arranged at the eyes of user A on same horizontal line L, so as to shoot the expression in the eyes of user A exactly, will not produce
Raw deflection, so as to which video conference both sides can watch mutual expression in the eyes state in holographic projection screen, so as to fulfill near
Real Eye contact.
Projector 101 receives the vision signal that meeting the opposing party sends, and the vision signal is changed into projected light beam and is thrown
It is incident upon in holographic projection screen 102 (projection ray is as shown in L1 in Fig. 1), projected light beam is imaged in holographic projection screen 102
Display.It is the viewing light of user A as shown in L2 in Fig. 1.
During user A watches the video imaging of the opposing party, camera 103 is shot through holographic projection screen 102
The vision signal (as shown in L3 in Fig. 1, for shoot light) of user A, and the vision signal is sent to other side (i.e. meeting is another
One side) video conference terminal on.
The both sides or multi-party for participating in meeting, all using above-mentioned video conference terminal, you can realize in a meeting almost true
Real Eye contact.
Under normal circumstances, in camera 103 when the imaging of user A is recorded, due to across holographic projection screen
102, the imaging of other side can be projected out in holographic projection screen 102, then at this point, the imaging of projection can make the imaging of current shooting
Into interference.
In order to avoid above-mentioned interference, the video conference terminal that the present embodiment is provided further includes：First polaroid 104 and
Two polaroids 105.First polaroid, 104 and second polaroid 105 is line polarisation piece or is rotatory polarization piece.If the
One polaroid 104 and the second polaroid 105 are line polarisation piece, then the polarizing axis of the first polaroid 104 and the second polaroid 105
Direction is orthogonal (i.e. polarization direction is orthogonal)；If the first polaroid 104 and the second polaroid 105 are rotatory polarization piece,
Then opposite mutually (i.e. a polaroid is clockwise circle in the light transmission rotatory polarization direction of the first polaroid 104 and the second polaroid 105
Polarisation, one is rotatory polarization counterclockwise).
In the present embodiment, the first polaroid 104 and the second polaroid 105 be using line polarisation piece, and in this implementation
The first polaroid 104 is horizontal polaroid (i.e. optical axis is horizontal) in example, and the second polaroid 105 is vertical polaroid (i.e. light
Axis is vertical).104 be may be set to be as vertical polaroid, 105 be horizontal polaroid.Simultaneously as the present embodiment is carried
The video conference terminal of confession is mainly used in 2D video conferences, so, the first polaroid 104 and the second polaroid 105 are quiet
The line polarisation piece of state.
First polaroid 104 is placed in the camera lens front end of projector 101, for filtering the projected light that projector 101 projects
Shu Zhong, the projected light beam different from 104 polarization state of the first polaroid (need to be known, which is and the
The identical projected light beam of the polarization states of two polaroids 105), only lead to the projected light beam identical with 104 polarization state of the first polaroid
Cross, and by by shadow light beam projecting to holographic projection screen 102 on.Second polaroid 105 is placed in the camera lens of camera 103
Front end is projected for filtering projector 101 to projection identical with 104 polarization state of the first polaroid in holographic projection screen 102
Light beam prevents it from passing through.Meanwhile second polaroid 105 allow from user A to camera 103, with the second polaroid 105
The identical light beam of polarization state is by so that camera 103 can shoot the vision signal of user A.Pass through two 104 Hes of polaroid
105 filtration successively filters out the light beam that projector 101 is projected out, and is generated when shooting user to camera 103 to eliminate
Interference.Camera 103 can avoid disturbing, clearly for the imaging display in holographic projection screen 102 in shooting process
Ground shoots the vision signal of user A through holographic projection screen 102.It should be noted that it is filtered out by 104 in projected light beam
The light beam of polarization state two (identical with 105 polarization states) makes the light beam of only polarization state one (identical with 104 polarization states) be projected to entirely
It ceases on projection screen, then the light beam for filtering out polarization state one by 105, after filtering twice, projector 101 generates surplus
Under projected light beam part can be ignored, it is final ensure camera 103 be capable of in recording process maximum possible from
The interference of the projection imaging of other side, and simply capture the imaging recorded from one's own side (user A).
The size of holographic projection screen 102 can be arbitrary dimension, be preferably greater than 1m*1m, in order to can be by
According to the size 1 of true man:1 display personage's half body even imaging of whole body, in the prior art, such as carries out video process using mobile phone
In, screen is all very small, and the imaging scale of other side is compressed to the scope less than screen, and such video is not true to nature, clearly
It is clear.For another example, the screen of TV.Almost without the screen that can be shown with whole body, therefore, the present embodiment is by holographic projection screen 102
It is sized to be more than 1m*1m, so that Projection Display goes out the true form ratio of user so that meeting participant both sides can
There is the interactive experience of higher quality.
The distance between user A and holographic projection screen 102 are arbitrary size, and preferred distance is 0.5m to 3m, more excellent
Elect 1m as.In the prior art, often the citing of people and screen is separated by very far, is so because original screen is not transparent
, so original camera cannot be directly into the centre with screen, it is thus impossible to directly be in same level with human eye
On, and the top or bottom of screen are often disposed on, it is not just direct-view state so when shooting face, but there are one
Determine angle, so if people's off screen curtain is close, can intuitively find out very much that the direct-view direction of human eye is deviateed with screen, when
When distant, what this phenomenon can be aobvious because of zooming out for distance is less apparent, directly perceived.Therefore it is big in the prior art
All it is people and video screen gathering larger distance, this comparison is suitble to the video conference of group, i.e. both sides have multiple users
Referring to when, and the present invention be more applicable for 1 pair 1, individual-to-individual video conference.For example, before screen is arranged on desk
End, claps the bust of human body, people, which only needs to be sitting on the rotine positioning for doing work table, can carry out video conference, so more meet people
The comfort level of body-sensing official.
In conclusion first embodiment of the invention provides a kind of video conference terminal, video conference both sides is allowed all may be used
To watch mutual expression in the eyes state in holographic projection screen, so as to fulfill intimate real Eye contact.
As second embodiment of the present invention, as shown in Fig. 2, be a kind of video conference terminal provided by the invention, it should
Terminal includes projector 201, holographic projection screen 202 and camera 203.The video conference terminal that the present embodiment is provided is main
It applies in 3D video conferencing systems, therefore, projector 201 is 3D projectors, and camera 203 is 3D cameras.
Mutual alignment between 203 three of projector 201, holographic projection screen 202 and camera is as shown in Fig. 2, be：Entirely
Breath projection screen 202 is arranged between user A and camera 203, and projector 201 is arranged at the arbitrary of holographic projection screen 202
One side can be located at the same side with user A, can also be arranged at the other side opposite with user (i.e. where camera 203 that
One side), the installation position of the projector 201 is mainly set according to the characteristic of holographic projection screen 202.In the present embodiment,
Projector 201 and user A are located at the same side of holographic projection screen 202, and camera 203 be arranged at the eyes of user A into
On same horizontal line L.
Holographic projection screen 202 is transparent holographic projection screen, in the present embodiment, using transparency more than 50%
Line holographic projections nanometer display screen, such as：The screen of model NanoAR.Since this terminal employs transparent holographic projection screen
202, therefore camera 203 can be arranged to the opposite side of holographic projection screen 202, and in shooting process, it will not be subject to
202 stop.Also because for this purpose, camera 203 can be arranged at the eyes of user A on same horizontal line L, so as to
The expression in the eyes of user A is shot exactly, will not generate deflection, so as to which video conference both sides can watch in holographic projection screen
To mutual expression in the eyes state, so as to fulfill intimate real Eye contact.
Projector 201 receives the vision signal that meeting the opposing party sends, and the vision signal is changed into projected light beam and is thrown
It is incident upon in holographic projection screen 202 (projection ray is as shown in L1 in Fig. 2), projected light beam is imaged in holographic projection screen 202
Display.It is the viewing light of user A as shown in L2 in Fig. 2, is the 3D imagings of the opposing party user B of meeting as shown in B in figure
Virtual location, the virtual image of 3D can be intuitively shown in behind holographic projection screen 202.If set holographic projection screen
202 can also be shown in distant distance, the virtual image of 3D before holographic projection screen 202.
During user A watches the video imaging of the opposing party, camera 203 is shot through holographic projection screen 202
The vision signal (as shown in L3 in Fig. 2, for shoot light) of user A, and the vision signal is sent to other side (i.e. meeting is another
One side) video conference terminal on.
The both sides or multi-party for participating in meeting, all using above-mentioned video conference terminal, you can realize in a meeting almost true
Real Eye contact.
Under normal circumstances, in camera 203 when the imaging of user A is recorded, due to across holographic projection screen
202, the imaging of other side can be projected out in holographic projection screen 202, then at this point, the imaging of projection can make the imaging of current shooting
Into interference.
In order to avoid above-mentioned interference, the video conference terminal that the present embodiment is provided further includes：First polaroid 204 and
Two polaroids 205.First polaroid, 204 and second polaroid 205 is line polarisation piece or is rotatory polarization piece.If the
One polaroid 204 and the second polaroid 205 are line polarisation piece, then the polarizing axis of the first polaroid 204 and the second polaroid 205
Direction is orthogonal (i.e. polarization direction is orthogonal)；If the first polaroid 204 and the second polaroid 205 are rotatory polarization piece,
Then opposite mutually (i.e. a polaroid is clockwise circle in the light transmission rotatory polarization direction of the first polaroid 204 and the second polaroid 205
Polarisation, one is rotatory polarization counterclockwise).
Since the video conference terminal that the present embodiment is provided is mainly used in 3D video conferences, so, the first polaroid
204 and second polaroid 205 be dynamic polaroid (can be dynamic rotatory polarization piece or dynamic line polarisation piece).
It should be noted that when in 3D video conferences, this 204 and 205 can be dynamic polaroid or other have it is dynamic
The polarized regulator part of state polarized light property belongs to the present invention's using the arbitrary polarized regulator part with dynamic polarized light property
In protection domain.In the present embodiment, the first polaroid 204 and the second polaroid 205 are using dynamic rotatory polarization piece.And the
Both one polaroid 204 and the second polaroid 205 polarization state are asynchronous.In the present embodiment, cyclotomy is inclined when the first polaroid 204 is
Mating plate, the second polaroid 205 are time-division rotatory polarization piece, and the drive signal of the two is asynchronous, as shown in Figure 3.First polaroid
204 are placed in the camera lens front end of projector 201, and the second polaroid 205 is placed in the camera lens front end of camera 203.First polaroid
204, with projector 201 project left images when it is synchronous, for the projected light beam being projected in holographic projection screen 202 sequentially
It is adjusted to the polarization state of left and right image；Second polaroid 205, with projector 201 project left images when it is asynchronous, for blocking
The left and right image being projected in holographic projection screen 202, meanwhile, the light from user A can be allowed to be incident to camera shooting
First 203, the interference of the imaging display in holographic projection screen can be avoided so as to camera 203, clearly through line holographic projections
The vision signal of screen shot user A.204 and 205 concrete principle can be understood as follows：
It need to know, the projection theory of 3D projectors is a frame left side, the right sequential projection of a frame.First polaroid 204 and second is inclined
Mating plate is time-division polaroid, it may have a characteristics of frame is left, a frame right order polarisation.What it is when 201 Current projection of projector is left
When frame projects, using the change of the first polaroid 204, into left polarization state, (i.e. it is left to wear 3D glasses to the polarization state of left frame projection by user
Eye can receive), and since both the first polaroid 204 and the second polaroid 205 polarization state are asynchronous, then at this point, the second polaroid
205 change polarization state into right polarization state (i.e. right eye can receive), and therefore, the camera behind 205 can only receive at this time
It to the projection of right eye polarization state, i.e., projects at this time and changes over left eye polarization state by 204, so camera 203 can not capture
The left frame projection currently projected from projector 201, so the left frame that structure design at this time can filter out projector 201 is thrown
Shadow.Similarly, when 201 Current projection of projector be the projection of right frame when, change the inclined of right frame projection using the first polaroid 204
Light state is into right polarization state (i.e. right eye can receive), and since both the first polaroid 204 and the second polaroid 205 polarization states are different
Step, then at this point, the second polaroid 205 changes polarization state into left polarization state (i.e. left eye can receive), therefore, behind 205
Camera can only receive the projection of left eye polarization state at this time, and changed over right eye polarization state by 204 due to projecting at this time,
So camera 203 can not capture the right frame projection currently projected from projector 201, so structure design at this time being capable of mistake
Filter the right frame projection of projector 201.
By the effect successively of above-mentioned two polaroid 204 and 205, camera 203 can avoid in shooting process
The interference of imaging display in holographic projection screen 202, the video letter that user A is clearly shot through holographic projection screen 202
Number, it is final to ensure that camera 203 is capable of the interference of the projection imaging from other side of maximum possible in recording process, and be
Capture the imaging recorded from one's own side (user A).
The size of holographic projection screen 202 can be arbitrary dimension, be preferably greater than 1m*1m, in order to can be by
According to the size 1 of true man:1 display personage imaging, in the prior art, during carrying out video using mobile phone, screen all right and wrong
Often small, the imaging scale of other side is compressed to the scope less than screen, and such video is not true to nature, clearly.For another example, TV
Screen.Almost without the screen that can be shown with whole body, therefore, holographic projection screen 202 is sized to greatly by the present embodiment
In 1m*1m, so that Projection Display goes out the true form ratio of user so that meeting participant both sides can have the friendship of higher quality
Mutually experience.
The distance between user A and holographic projection screen 202 are arbitrary size, and preferred distance is 0.5m to 3m, more excellent
Elect 1m as.In the prior art, often the citing of people and screen is separated by very far, is so because original screen is not transparent
, so original camera cannot be directly into the centre with screen, it is thus impossible to directly be in same level with human eye
On, and the top or bottom of screen are often disposed on, it is not just direct-view state so when shooting face, but there are one
Determine angle, so if people's off screen curtain is close, can intuitively find out very much that the direct-view direction of human eye is deviateed with screen, when
When distant, what this phenomenon can be aobvious because of zooming out for distance is less apparent, directly perceived.Therefore it is big in the prior art
All it is people and video screen gathering larger distance, this comparison is suitble to the video conference of group, i.e. both sides have multiple users
Referring to when, and the present invention be more applicable for 1 pair 1, individual-to-individual video conference.For example, before screen is arranged on desk
End, claps the bust of human body, people, which only needs to be made on the rotine positioning for doing work table, can carry out video conference, so more meet people
The comfort level of body-sensing official.
In addition, the video conferencing system that the present embodiment is provided further includes time-division polarisation synchronous light lamp 206 and 3D glasses
207.(i.e. 206 polarized light property when playing lamp synchronous with the polarization state of the second polaroid 205 of time-division polarisation synchronous light lamp 206
It is synchronous with 205 polarized light property), and time-division polarisation synchronous light lamp 206 is arranged at 102 top of holographic projection screen.Such as
Shown in Fig. 3, it is shown that the polarization characteristic of 3D synchronizations and asynchronous signal, the polarisation synchronous light lamp 206 is for reducing 3D glasses
The blackness of 208 (i.e. 3D polaroid glasses in Fig. 3), so as to increase the comfort level in video conference experience of the process.It is because general
3D eyeglass is inclined black, and when time-division polarisation synchronous light lamp 206 is illuminated, illumination light can penetrate 3D glasses
208 and increase the brightness of the face part of user, so as to which the black levels of 3D glasses provided by the present invention can be compared to city
The black level of common 3D glasses is more lower on field, the Transparent color more close to eyeglass.
In the present embodiment, which further includes face identification device 208 (not shown in Fig. 2), and face is known
Other device 208 is used for when reference object is in activity, and face display location is locked to be shown in shooting process
The position of the camera 203 gone out behind the position and holographic projection screen of face is consistent, so as to which trace trap arrives face
Expression in the eyes activity dynamic.The face identification device 208 can be a kind of hardware device, or a kind of software module, Ke Yian
Any position loaded on video conference terminal, such as in projector 201 or camera 203.In video conference process
In, even if camera is arranged to be in same level with the eyes of people, but in conference process, the people of meeting both sides
May its head of small-scale movement, such as turn left or turn right, at this moment, using recognition of face tracing module, that is, make one
Face is in activity and loads, and human face target can also be locked in proper range so that and the moment can capture face part, so as to
Pass to the projector of other side.And the technology that recognition of face tracer technique is a comparative maturity, it can design on arbitrary element
It uses, for example, camera is fixed, then the module is integrated in projector so that projector is known in projection by face
Other module reaches recognition and tracking effect.For another example, which is integrated on camera, camera is can be with mechanical activity formula at this time
, such camera can be tracked and image to face according to the module.Or face recognition module is arranged on cloud
During video imaging is transferred to meeting the opposing party from a side of meeting, algorithm school is carried out by face recognition module for end
Just etc., so as to achieve the purpose that clear face and expression in the eyes can be imaged out always.
In conclusion second embodiment of the invention provides a kind of video conference terminal, video conference both sides is allowed all may be used
To watch mutual expression in the eyes state in holographic projection screen, so as to fulfill intimate real Eye contact.And due to using
3D technology, during video conference, user A sees that the imaging of other side (user B) is three-dimensional, and nonplanar, and can body
It tests and really closely experiences, make participation video conference both sides, other side can be experienced just general 1 meter to 2 meters in face of oneself
The distance of scope, and the size of true man 1 to 1 can be reached, high degree reaches the sense of reality that two people talk face to face, because
This, more optimizes the experience effect of user.And the present embodiment also includes face identification functions so that other side face can be locked
Position on the projection screen ensures the position consistency with the camera after projection screen, causes Eye contact will not be by being clapped
Taking the photograph object and moving left and right is influenced.
The 3rd implementation of the present invention, provides a kind of video conferencing system based on 2D, which applies such as above-mentioned the
Video conference terminal described in one embodiment is mainly used in 2D video conferences, can realize the expression in the eyes of meeting participant
Exchange.
The 4th implementation of the present invention, provides a kind of video conferencing system based on 3D, which applies such as above-mentioned the
Video conference terminal described in two embodiments, is mainly used in 3D video conferences, can realize the expression in the eyes of meeting participant
Exchange.
The foregoing is merely illustrative of the preferred embodiments of the present invention, all in spirit of the invention not to limit invention
With all any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of video conference terminal, which is characterized in that the terminal includes projector, holographic projection screen and camera：
The holographic projection screen is arranged between user and the camera, and the projector is arranged at the holographic projecting screen
The arbitrary one side of curtain；The holographic projection screen is transparent holographic projection screen；And the camera is arranged at and the use
The eyes at family are into same horizontal line, to shoot the expression in the eyes of the user；
The vision signal for receiving the vision signal of meeting the opposing party transmission, and is changed into projected light by the projector
Beam is projected in the holographic projection screen, and the projected light beam is imaged display in the holographic projection screen；
The camera for shooting the vision signal of the user through the holographic projection screen, and the video is believed
Number it is sent to the video conference terminal of other side.
2. terminal as described in claim 1, which is characterized in that the terminal further includes the first polaroid and the second polaroid：
First polaroid is placed in the camera lens front end of the projector, and second polaroid is placed in the camera lens of the camera
Front end, first polaroid are line polarisation piece with second polaroid or are rotatory polarization piece；
If first polaroid and second polaroid are line polarisation piece, first polaroid and described second is partially
The polarisation direction of principal axis of mating plate is orthogonal；
If first polaroid and second polaroid are rotatory polarization piece, first polaroid is inclined with described second
The light transmission rotatory polarization direction of mating plate is opposite mutually.
3. terminal as claimed in claim 2, which is characterized in that if the video conference terminal is used for 2D video conferences, institute
Camera is stated as 2D cameras, the projector is 2D projectors, and first polaroid and the second polaroid are static inclined
Mating plate；
First polaroid for filtering the projected light beam that the projector goes out, makes to polarize with first polaroid
The identical projected light beam of state passes through；
Second polaroid for filtering the projected light beam that the projector goes out, makes to polarize with first polaroid
The identical projected light beam of state cannot be by, and make it is from the user to the camera, with the second polaroid polarization state
Identical light beam passes through.
4. terminal as claimed in claim 2, which is characterized in that if the video conference terminal is used for 3D video conferences, institute
Projector is stated as 3D projectors, the camera is 3D cameras, and first polaroid and the second polaroid are that dynamic is inclined
Light regulator part, and the two polarization state is asynchronous；
First polaroid, with the projector project left images when it is synchronous, for handle be projected to the holographic projecting screen
The projected light beam on curtain is sequentially adjusted to the polarization state of left and right image；
Second polaroid, with the projector project left images when it is asynchronous, be projected to the line holographic projections for blocking
Left and right image on screen, and make to pass through from the user to the light beam of the camera.
5. terminal as claimed in claim 4, which is characterized in that the system also includes time-division polarisation synchronous light lamp, with
The polarization state of second polaroid is synchronous, and the time-division polarisation synchronous light lamp is arranged in the holographic projection screen
Side.
6. terminal as claimed in claim 4, which is characterized in that the terminal further includes face identification device, and the face is known
Other device is used to, when reference object is in activity, lock face display location, to be shown in shooting process
The position of face and the position of the camera are consistent.
7. terminal as described in claim 1, which is characterized in that the holographic projection screen is more than 50% holography for transparency
Project nanometer display screen.
8. terminal as described in claim 1, which is characterized in that the size of the holographic projection screen be more than 1m*1m, so as to
Projection Display goes out the true form ratio of user.
9. terminal as described in claim 1, which is characterized in that the distance between the user and described holographic projection screen are
0.5m to 3m.
10. a kind of video conferencing system, which is characterized in that the system includes video as described in any one of claim 1 to 9
Conference terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810069356.9A CN108093201B (en) | 2018-01-24 | 2018-01-24 | Video conference terminal and system |
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|---|---|---|---|
| CN201810069356.9A CN108093201B (en) | 2018-01-24 | 2018-01-24 | Video conference terminal and system |
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| CN108093201A true CN108093201A (en) | 2018-05-29 |
| CN108093201B CN108093201B (en) | 2020-07-31 |
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| CN201810069356.9A Active CN108093201B (en) | 2018-01-24 | 2018-01-24 | Video conference terminal and system |
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| CN111641813A (en) * | 2020-05-29 | 2020-09-08 | 睿住科技有限公司 | Visitor guiding method, building visible intercom system and storage medium |
| CN112492253A (en) * | 2020-09-20 | 2021-03-12 | 周永业 | Video conference system with face position tracking function and implementation method thereof |
| CN113784077A (en) * | 2021-09-24 | 2021-12-10 | 联想(北京)有限公司 | Information processing method and device and electronic equipment |
| CN113885703A (en) * | 2021-09-30 | 2022-01-04 | 联想(北京)有限公司 | Information processing method and device and electronic equipment |
| WO2022143426A1 (en) * | 2020-12-31 | 2022-07-07 | 华为技术有限公司 | Conference device and conference system |
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| CN108093201B (en) | 2020-07-31 |
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