CN103634560A - A video conference system and a video image control method thereof - Google Patents
A video conference system and a video image control method thereof Download PDFInfo
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- CN103634560A CN103634560A CN201210297904.6A CN201210297904A CN103634560A CN 103634560 A CN103634560 A CN 103634560A CN 201210297904 A CN201210297904 A CN 201210297904A CN 103634560 A CN103634560 A CN 103634560A
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Abstract
The invention provides a video conference system and a video image control method thereof. The method comprises the following steps: images of a remote video conference are received; whether face images exist in the remote video conference images is determined; If the face images exist in the remote video conference images, users who need direct visual line contact to be carried out in a remote video conference terminal are determined, and eye images of the users are identified; Input operations of local users are received and the position of an image acquisition apparatus at an image display device is determined; an object position of direct visual line contact is determined to exist at a position of the image acquisition apparatus at the image display device; and images of the users who need to carry out direct visual line contact are displayed at the object position. According to the method, through the determination of the users who need direct visual line contact to be carried out in a remote video conference, and through the determination of the position of image acquisition apparatus at the image display device and the object position of direct visual line contact at the position, and finally by means of displaying the images of the users in the object position, the direct contact of the visual lines can be carried out between the local users and the remote users.
Description
Technical field
The present invention relates to video conferencing technology field, relate in particular to a kind of video conferencing system and video image control method thereof.
Background technology
Video conference can allow personnel participating in the meeting directly observe each other image, action, expression of the other side etc., thereby make local personnel participating in the meeting to carry out interaction with long-range personnel participating in the meeting, make the personnel participating in the meeting of different location experience the effect as the on-the-spot meeting of participation " face-to-face ".Therefore, video conferencing system all has the display screen of a demonstration long-distance user image and the image capture device that camera or video camera etc. obtain personnel participating in the meeting's image at least in every one end.
Refer to the existing video conferencing system shown in Fig. 1.The local user A and the long-distance user B that participate in video conference are seeing the display screen 21 and 22 that shows the other side's image separately.In the video conferencing system shown in Fig. 1, camera 11 and 12 is placed in the top of display screen 21 and 22.Angle θ represents the angle of camera 11 and 21 couples of user A of display screen, because user A is directly watching the image (eye image) of user B attentively but not camera 11, so the eyes of user A are being watched below attentively in the image of the user A that camera 11 captures.So, if the image of the user A that system is directly caught camera 11 is shown on display screen 22, user B is when watching the image of user A, and user B is the eyes of seeing to user A, the sight line of user A is to look down, and so the sight line of user A and user B staggers.In like manner, user A also has similar vision deviation when watching the image of user B.As everyone knows, in talk, watching the other side's eyes attentively is a kind of basic ceremonys, is also conducive to promote both sides' talk.Therefore, in the video conferencing system shown in Fig. 1, user B is when watching the image of user A, and desirable situation should be that the sight line of user B is seen to the eyes of user A, and user A sight line also sees to the eyes of user B, between user A and B, has direct sight line to contact.
Summary of the invention
In view of this, be necessary to provide the control method of the video image in a kind of video conference, by strengthening local user, contact to improve the quality that exchanges between local user and long-distance user with direct sight line between long-distance user, to address the above problem.
For achieving the above object, video image control method in video conference provided by the present invention, this video conferencing system comprises at least one local video conference terminal and a Remote Video Conference terminal, described video conference terminal includes video image acquisition device, image display and Video Conference Controlling System, and the method comprises the following steps:
The image of receiving remote video conference;
Whether judgement has facial image in received Remote Video Conference image;
While having facial image in described Remote Video Conference image, determine the user who needs to carry out direct sight line contact in described Remote Video Conference terminal;
Identify the eye image that described need carry out direct sight line contact user;
Receiving user is mapped in the input operation of the position on described image display and determines that described image collecting device is mapped in the position on described image display about described video image acquisition device;
Determine that there is the target location of direct sight line contact position that described image collecting device is mapped in described image display;
The image that described need is carried out to direct sight line contact user is shown in this target location.
In addition, the present invention also provides a kind of video conferencing system.This video conferencing system, comprises at least one local video conference terminal, a Remote Video Conference terminal and connects the network of two video video conference terminals, described video conference terminal comprises: for gathering the video image acquisition device of video conference image; For showing the image display of the video conference image of described Remote Video Conference terminal; And with described video image acquisition device and the Video Conference Controlling System being connected with described image display; This Video Conference Controlling System comprises: an image sending and receiving unit, the Remote Video Conference image of sending out for the Video Conference Controlling System of receiving remote video conference terminal and transmission local video conference image are to the Video Conference Controlling System in Remote Video Conference terminal, one control unit, for judging at received long-distance video image whether have facial image, when judging while having facial image in described long-distance video image, determine the eye image that needs to carry out the user of direct sight line contact and identify this user in described Remote Video Conference terminal; One Position input unit, is mapped in the input operation of the position on described image display and produces an input signal for responding user's described image collecting device; One position receiving element, for receive the input signal of described Position input unit and determine described image collecting device be mapped in described image display display screen position in the plane; One determining unit, for determining that described image collecting device is mapped in the target location that there is direct sight line communicative effect position on described image display; One microprocessor, for needing described Remote Video Conference terminal the image that carries out sight line contact user to be shown in above-mentioned target location.
With respect to prior art, above-mentioned video conferencing system and video image control method thereof, by judgement, in long-distance video image, whether there is user's facial image, when judging facial image, just determine the image that needs to carry out the user of direct sight line contact and identify this eyes of user in teleconference, obtaining afterwards the position of image collecting device this position of reading images harvester has direct sight line to contact the target location of effect, the image that finally long-range need is carried out to the user of sight line contact is placed into the target location that this has direct sight line contact effect, so that can carry out the direct of sight line between local user and long-distance user, contact, to improve the quality of both sides' talk.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, in video conferencing system, user's sight line exchanges.
Fig. 2 is the schematic diagram of the video conferencing system of an embodiment of the present invention.
Fig. 3 is the control system functional block diagram in the video conferencing system of one embodiment of the invention.
Fig. 4 is the flow chart of sight line contact method of the video conferencing system of one embodiment of the invention.
Main element symbol description
| Local video conference terminal | 100 |
| Remote |
200 |
| |
300 |
| |
10 |
| |
11,12 |
| |
20 |
| |
21,22 |
| Video |
30 |
| Image sending and receiving |
31 |
| |
32 |
| |
321 |
| Mouth |
322 |
| Sight line |
323 |
| |
324 |
| |
33 |
| |
34 |
| Determining |
35 |
| |
36 |
| |
37 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
The present invention causes the problem without directly sight line contacts for improving the vision deviation existing between local user and long-distance user in video conference, by judgement, in long-distance video image, can there is user's facial image, when having facial image, determine the image that needs to carry out the user of sight line contact and identify this eyes of user in teleconference, obtaining afterwards the position of image collecting device this position of reading images harvester has direct sight line to contact the target location of effect, finally long-range need are carried out to the user images of sight line contact and adjust to the target location that this has direct sight line contact effect, so that can carry out the direct of sight line between local user and long-distance user, contact, to improve the quality of video conference.
Refer to Fig. 2, the schematic diagram of the screen conference system that it is an embodiment of the present invention.This video conferencing system comprises local video conference terminal 100, this locality attend a meeting user at least 1 people, Remote Video Conference terminal 200, the long-range user of attending a meeting at least 1 people and connect the network communication module 300 of two video conference terminals.In the present embodiment, this network communication module can be GSM (global system for mobile communications) network, GPRS (GPRS) network, UMTS (Universal Mobile Telecommunications System) network, or WIFI (WLAN (wireless local area network)) network.
For simplified characterization, local video conference terminal 100 and Remote Video Conference terminal 200 are considered to identical and only local video conference terminal 100 are described in detail.Local video conference terminal 100 comprises a video image acquisition device 10, an image display 20 and a Video Conference Controlling System 30.Video image acquisition device 10 is connected with Video Conference Controlling System 30, for gathering the image of video conference rooms, especially participates in the image of Users of Video Conference System.Wherein, image collecting device 10 can be camera or video camera, and this image collecting device 10 is positioned at the surrounding of image display display screen one side.Image display 20 is connected with Video Conference Controlling System 30, for the received long-distance video image of display video conference control system 30.Wherein, this image display 20 can be the display screen of computer or notebook, the display screen in the display screen of television set or complicated video projection system.
Refer to Fig. 3, Video Conference Controlling System 30 comprises an image sending and receiving unit 31, a control unit 32, a microprocessor 36.
Image sending and receiving unit 31, the Remote Video Conference image sending for receiving remote Video Conference Controlling System and send local video conference image to the Video Conference Controlling System of long-range Remote Video Conference terminal.
Mouth type identification module 322, while being many people for the user who participates in this video conference in Remote Video Conference terminal 200, the user of the vicissitudinous Remote Video Conference terminal 200 of mouth type in identification long-distance video image.In present embodiment, when the user of participation video conference is many people, by user's mouth type, change to judge a certain user in a plurality of users of Remote Video Conference terminal 200 user for now talking or talking, this user just exchanges with local user.Give tacit consent to this Remote Video Conference terminal 200 of synchronization only has a people speaking simultaneously.
Sight line contact determination module 323, for determining that Remote Video Conference needs to carry out with local user the user that direct sight line contacts.In the present embodiment, when the facial image quantity recognizing in long-distance video image when face recognition module 321 is 1, this user that sight line contact determination module 323 is just determined Remote Video Conference terminal 200 is for carrying out the user that direct sight line contacts with the user of local video conference terminal 100; When the facial image quantity recognizing in long-distance video image when face recognition module 321 surpasses 1, sight line contact determination module 323 just determine mouth type identification module 322 identify the vicissitudinous Remote Video Conference terminal 200 of mouth type this user for carrying out the user that direct sight line contacts with the user of local video conference terminal 100.
This Video Conference Controlling System 30 also comprises 33, position, a Position input unit receiving element 37, a memory cell 34 and a determining unit 35.
It should be noted that in the present invention, the position of mentioning in following specification all refers to the coordinate position that falls into the coordinate system of being set up as benchmark with the plane at the display screen place of image display 20 and the dimensioned area of this display screen of take, wherein, this coordinate system is the initial point of one of take in four drift angles of this display screen as coordinate system, take and crossed the transverse axis that the straight line at the place, a wherein limit in two adjacent limits of this drift angle is this coordinate system, the longitudinal axis that the straight line at another place, limit in two limits of take is this coordinate system.
When video image acquisition device 10 is mounted on image display 20, user's trigger position input unit 33, Position input unit 33 response users' input operation also produces the input signal that an image collecting device 10 maps to a certain position on image display 20.
Determining unit 35, for determining that display screen institute that image collecting device is mapped in image display position in the plane has direct sight line to contact the target location of effect.In execution mode, determining unit 35 be reading images harvester is positioned at image display from memory cell 34 display screen the target location of position in the plane.
The image that microprocessor 36 carries out sight line contact user by the need of this Remote Video Conference terminal 200 is shown in this target location, especially this user's eye image is shown in to this target location.Further, microprocessor 36 is when whether this user's image can partly exceed the indication range of this display screen when judging that this user's eye image shows with above-mentioned target location, when when judging this user's eye image and be shown in above-mentioned target location, this user's image exceeds the indication range of this display screen by part, microprocessor 36 is also done excision and is processed and the image of this user after excision is shown in to this target location exceeding the part image of display screen in this user images.
Refer to Fig. 4, below in conjunction with video conferencing system of the present invention, video image control method of the present invention is further described in detail.
Step S401, image sending and receiving unit 31 receiving remote video images.
Step S402, face recognition module 321 identifies whether there is facial image in received long-distance video image, if so, enters step S403, and if not, flow process finishes.
Step S403, whether the quantity of the facial image in face recognition module 321 these long-distance video images of identification surpasses 1, if so, enters step S404, if not, enters step S405.
Step S404, mouth type identification module 322 is identified the vicissitudinous user of mouth type in long-distance video image.It should be noted that in the present embodiment, acquiescence synchronization Remote Video Conference terminal 200 only has a people speaking.
Step S405, sight line contact determination module 323 is determined the user who needs to carry out sight line contact in long-distance video image.In the present embodiment, when identifying facial image number be 1 in step S403, the user of this user that sight line contact determination module 323 is confirmed Remote Video Conference terminals 200 for carrying out direct sight line contact; When identifying facial image number surpass 1 in step S403, sight line contact determination module 323 is determined this user that mouth type identification modules 322 recognize the vicissitudinous Remote Video Conference terminal 200 of mouth type user for carrying out direct sight line contact.
Step S406, eye recognition module 324 is identified this eye image that need to carry out direct sight line contact user in long-distance video image.
Step S407, fixed video image collecting device 10, Position input unit 33 response users' described image collecting device 10 is mapped in the input operation of the position on described image display 20 and produces an input signal, the input signal that receiving element 37 receiving position input units 33 in position produce and determine image collecting device 10 be mapped in image display 20 display screen position in the plane.
Step S408, determining unit 35 determines that the position that image collecting device 10 is mapped on image display 20 has direct sight line to contact the target location of effect.
Step S409, the image that microprocessor 36 carries out sight line contact user by the need of Remote Video Conference terminal 200 is shown in above-mentioned target location.
In the present embodiment, the eye image that microprocessor 36 carries out sight line contact user by the need of Remote Video Conference terminal 200 is shown in above-mentioned target location.
Present embodiment also comprises step, judgement adjusts to by this user's eye image the indication range whether topography that this target is shown in this user can exceed this display screen, when judging this user's image and can exceed the indication range of described display screen, microprocessor 36 is also done excision processing to exceeding the part image of display screen in this user images, and processor is shown in the image of being this user after excision on above-mentioned target location.
Those skilled in the art will be appreciated that; above execution mode is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above execution mode is done and variation all drop on the scope of protection of present invention.
Claims (10)
1. the video image control method of a video conferencing system, this video conferencing system comprises at least one local video conference terminal and a Remote Video Conference terminal, described local video conference terminal includes video image acquisition device, image display and Video Conference Controlling System, it is characterized in that, the method comprises the following steps:
The image of receiving remote video conference;
Whether judgement has facial image in received Remote Video Conference image;
While having facial image in judging described Remote Video Conference image, determine the user who needs to carry out direct sight line contact in described Remote Video Conference terminal;
Identify the eye image that described need carry out direct sight line contact user;
Receiving user is mapped in the input operation of the position on described image display and determines that described image collecting device is mapped in the position on described image display about described video image acquisition device;
Determine that there is the target location of direct sight line contact position that described image collecting device is mapped in described image display;
The image that described need is carried out to direct sight line contact user is shown in this target location.
2. the method for claim 1, is characterized in that, step " is determined the user who needs to carry out direct sight line contact in described Remote Video Conference terminal " and specifically comprised:
In described long-distance video image, identify facial image quantity, when recognized facial image quantity is 1, determine that the user is the user who needs to carry out direct sight line contact in Remote Video Conference terminal; And
When identified facial image quantity surpasses 1, in described long-distance video image, identify the vicissitudinous user of mouth type and determine the user of the vicissitudinous user of this mouth type for needing to carry out direct sight line contact in Remote Video Terminal.
3. the method for claim 1, it is characterized in that, described image collecting device is mapped in the position of described image display and target location and all refers to the coordinate position that falls into the coordinate system of being set up as benchmark with the display screen place plane of described image display and the dimensioned area of this display screen of take, wherein, this coordinate system is one of to take in four drift angles of this display screen the initial point that drift angle is coordinate system, take and crossed the transverse axis that wherein straight line at place is this coordinate system in the adjacent both sides of this drift angle on one side, the longitudinal axis that the wherein another side place straight line of take in both sides is this coordinate system.
4. the method for claim 1, is characterized in that, also comprises the steps: that the eye image that described need is carried out to direct sight line contact user is placed into this target location.
5. method as claimed in claim 4, is characterized in that, also comprises the steps: whether this user's image when eye image that judgement is carried out direct sight line contact user by described need is placed into this target location can exceed the indication range of described display screen; When judging this user's image and can exceed the indication range of described display screen, excise in this user's image and exceed the image of the indication range of described display screen, and the image of this user after excision is shown in to this target location.
6. a video conferencing system, comprise at least one local video conference terminal, a Remote Video Conference terminal and connect the network of two video video conference terminals, described local video conference terminal comprises: for gathering the video image acquisition device of video conference image; For showing the image display of the video conference image of described Remote Video Conference terminal; And with described video image acquisition device and the Video Conference Controlling System being connected with described image display; It is characterized in that, this Video Conference Controlling System comprises:
One image sending and receiving unit, the Remote Video Conference image of sending out for the Video Conference Controlling System of receiving remote video conference terminal and send local video conference image to the Video Conference Controlling System in Remote Video Conference terminal,
One control unit, for judging at received long-distance video image whether have facial image, when judging while having facial image in described long-distance video image, determine the eye image that needs to carry out the user of direct sight line contact and identify this user in described Remote Video Conference terminal;
One Position input unit, is mapped in the input operation of the position on described image display and produces an input signal for responding user's described image collecting device;
One position receiving element, for receive the input signal of described Position input unit and determine described image collecting device be mapped in described image display display screen position in the plane;
One determining unit, for determining that described image collecting device is mapped in the target location that there is direct sight line communicative effect position on described image display;
One microprocessor, for needing described Remote Video Conference terminal the image that carries out sight line contact user to be shown in above-mentioned target location.
7. video conferencing system as claimed in claim 6, it is characterized in that, described control unit is also for identifying facial image quantity and identify the vicissitudinous user of mouth type in described long-distance video image at described long-distance video image, when recognized facial image quantity is 1, the unit of described control determines that the user is the user who needs to carry out direct sight line contact in Remote Video Conference terminal; When identified facial image quantity surpasses 1, described control unit is identified the vicissitudinous user of mouth type and is determined the user of the vicissitudinous user of this mouth type for needing to carry out direct sight line contact in described Remote Video Terminal in described long-distance video image.
8. video conferencing system as claimed in claim 6, it is characterized in that, described image collecting device is mapped in the position of described image display and target location and all refers to the coordinate position that falls into the coordinate system of being set up as benchmark with the display screen place plane of described image display and the dimensioned area of this display screen of take, wherein, this coordinate system is the initial point of one of take in four drift angles of this display screen as coordinate system, take and crossed the transverse axis that wherein straight line at place is this coordinate system in the adjacent both sides of this drift angle on one side, the longitudinal axis that the wherein another side place straight line of both sides kind of take is this coordinate system.
9. video conferencing system as claimed in claim 6, is characterized in that, described microprocessor will need the eye image that carries out direct sight line contact user to be shown in described target location in described Remote Video Conference terminal.
10. video conferencing system as claimed in claim 9, it is characterized in that, described in when the eye image that described need is carried out to direct sight line contact user is shown in described target location, microprocessor is also for judging whether this user's image can exceed the indication range of described display screen, when judging this user's parts of images and exceed the indication range of described display screen, described microprocessor also for excise this user's image exceed described display screen indication range image and the image of this user after removing is shown in to this target location.
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