CN104822038A - Recording and broadcasting system and picture switching method thereof - Google Patents
Recording and broadcasting system and picture switching method thereof Download PDFInfo
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Abstract
The invention relates to a recording and broadcasting system and a picture switching method thereof. The recording and broadcasting system comprises a signal acquisition device, an image processing device, and a switching control device. The signal acquisition device collects multi-path video signals and sends the signals to the image processing device. The image processing device generates a default display picture based on a preset picture mode according to the multi-path video signals and determines whether a video signal for triggering a picture switching motion exists in the multi-path video signals; and if so, a notification signal corresponding to the video signal is generated and is sent to the switching control device. The switching control device generates a switching signal according to the notification signal and sends the switching signal to the image processing device. And then the image processing device executes the picture switching motion based on the switching signal and generates a changed display picture after picture switching. With the recording and broadcasting system and the picture switching method thereof, the intelligent picture switching is realized and the picture efficiency is improved.
Description
Technical field
The present invention relates to video recorded broadcast technical field, particularly relate to a kind of recording and broadcasting system and picture changeover method thereof.
Background technology
Video recorded broadcast technology is vision signal by collection site and audio signal, carry out image procossing to signal to obtain showing video and displaying video being uploaded to network, thus user can connect live or program request by network checks displaying video, convenient and swift, be widely used in video conference or long-distance education etc.The displaying video that user obtains by terminal display viewing recorded broadcast.In teaching process, serve as a teacher when carrying out page turning to PPT, user may can't see the PPT after page turning on terminal display or when the PPT picture shown is less, user does not see the PPT after Chu's page turning, makes the sense of reality of user to classroom low.
Traditional recording and broadcasting system intercepts mode image switching by adopting manual switching picture or mouse, to be shown by the PPT after page turning or to amplify, makes user can see PPT clearly on terminal display.Manual switching picture needs the instructor in broadcasting's platform using instructor in broadcasting's software or specialty in addition, not only labor intensive but also increase cost; When adopting mouse to intercept mode, teacher is rolling mouse in teaching process, and can cause showing that picture switches chaotic, user can not recognize the dynamic of classroom timely on terminal display.Therefore traditional image switching method efficiency is low.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of recording and broadcasting system and the picture changeover method thereof that improve image switching efficiency are provided.
A kind of recording and broadcasting system, comprising: signal pickup assembly, image processing apparatus and switching control, described image processing apparatus connects described signal pickup assembly and switching control respectively;
Described signal pickup assembly gathers multi-channel video signal and is sent to described image processing apparatus;
Described image processing apparatus is according to described multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in described multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control;
Described switching control generates switching signal according to described notification signal and is sent to described image processing apparatus;
Described image processing apparatus also performs picture switching action according to described switching signal, generates the change after image switching and shows picture.
A picture changeover method for recording and broadcasting system, comprising:
Signal pickup assembly gathers multi-channel video signal and is sent to image processing apparatus;
Image processing apparatus is according to described multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in described multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control;
Described switching control generates switching signal according to described notification signal and is sent to described image processing apparatus;
Described image processing apparatus performs picture switching action according to described switching signal, generates the change after image switching and shows picture.
Above-mentioned a kind of recording and broadcasting system and picture changeover method thereof, by detecting the multi-channel video signal collected, judge whether to there is the vision signal triggering picture switching action, if then image switching, generate change and show picture, the intelligence achieving picture switches, and improves the efficiency that picture switches.
Accompanying drawing explanation
Fig. 1 is the structural representation of recording and broadcasting system preferred embodiment of the present invention;
Fig. 2 is single-image pattern diagram;
Fig. 3 is picture-in-picture mode schematic diagram;
Fig. 4 is picture-outside-picture mode schematic diagram;
Fig. 5 is that under single-image pattern, picture switches schematic diagram;
Fig. 6 is that under picture-in-picture mode, picture switches schematic diagram;
Fig. 7 is that under picture-outside-picture mode, picture switches schematic diagram;
Fig. 8 is the structural representation of another embodiment of recording and broadcasting system of the present invention;
The concrete structure figure that Fig. 9 is image processing apparatus shown in Fig. 1;
The concrete structure figure that Figure 10 is switching control shown in Fig. 1;
Figure 11 is the flow chart of picture changeover method first embodiment of recording and broadcasting system of the present invention;
Figure 12 is the flow chart of picture changeover method second embodiment of recording and broadcasting system of the present invention;
Figure 13 is the flow chart of picture changeover method the 3rd embodiment of recording and broadcasting system of the present invention.
Embodiment
With reference to figure 1, the preferred embodiment of a kind of recording and broadcasting system of the present invention, comprises signal pickup assembly 110, image processing apparatus 130 and switching control 150, and image processing apparatus 130 is connection signal harvester 110 and switching control 150 respectively.Signal pickup assembly 110 gathers multi-channel video signal and is sent to image processing apparatus 130.Image processing apparatus 130 is according to multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control 150.Switching control 150 generates switching signal according to notification signal and is sent to image processing apparatus 130, and image processing apparatus 130 also performs picture switching action according to switching signal, generates the change after image switching and shows picture.
The multi-channel video signal that signal pickup assembly 110 gathers can be analog signal also can be digital signal.Wherein in an embodiment, multi-channel video signal comprises at least two kinds in PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal.Such as, can be only have PPT vision signal and teacher's vision signal, also can be comprise above-mentioned all vision signals.Particularly, signal pickup assembly 110 can comprise teacher's camera, student's camera, writing on the blackboard camera and PPT signal connecting line, is respectively used to gather teacher's vision signal, student's vision signal, writing on the blackboard vision signal and PPT vision signal.PPT vision signal connects the PPT content of the computer interface acquisition teacher courseware of teacher by PPT signal connecting line, thus obtains PPT vision signal.
Show that picture is the picture corresponding with multi-channel video signal, PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal can obtain PPT picture, teacher's picture, student's picture and writing on the blackboard picture respectively.
Default image mode is the image mode that user pre-sets, and is presented as the image mosaic mode of showing picture.Particularly, image mode comprises single-image pattern, picture-in-picture mode and picture-outside-picture mode, and wherein picture-in-picture mode and picture-outside-picture mode are the displaying picture of key frame and auxiliary image splicing.With reference to figure 2, be single-image pattern, show in picture the one of showing only in teacher's picture, PPT picture, student's picture or writing on the blackboard picture.With reference to figure 3, being the picture-in-picture mode of 1 key frame and 1 auxiliary image splicing, with reference to figure 4, is that 1 key frame and 3 auxiliary images splice the picture-outside-picture mode obtained.Be appreciated that the number of auxiliary image in picture-in-picture mode and picture-outside-picture mode also can be other quantity.
The vision signal triggering picture switching action refers to the vision signal that change occurs to preset in the vision signal that the displaying picture that do not show is corresponding, or refers to the vision signal that change occurs in the vision signal that auxiliary image is corresponding to preset.The vision signal that change wherein occurs to preset refers to change and reaches pre-conditioned vision signal.Therefore, only have when vision signal corresponding to the displaying picture do not shown under single-image pattern occurs to preset change, and when vision signal corresponding to auxiliary image under picture-in-picture mode or picture-outside-picture mode occurs to preset change, just can trigger picture switching action.Under single-image pattern, picture switching action is specially the picture switching to the vision signal of triggering picture switching action corresponding in the displaying picture of current display, such as, current displaying picture is switched to PPT picture by teacher's picture.Under picture-in-picture mode or picture-outside-picture mode, picture switching action is specially the picture switching to the vision signal of triggering picture switching action corresponding the key frame of current display, such as, current key frame is switched to PPT picture by teacher's picture.
Multi-channel video signal comprises in the embodiment of PPT vision signal, image processing apparatus 130 judges whether there is the vision signal triggering picture switching action in multi-channel video signal, be specially: image processing apparatus 130 judges whether PPT vision signal triggers picture switching action, namely judge whether the PPT vision signal of PPT vision signal or the auxiliary image do not shown changes, if so, then generate the notification signal of PPT vision signal and be sent to switching control 150.Image processing apparatus 130 performs picture switching action according to switching signal, generates the change after image switching and shows picture, be specially, and acquiescence is shown that picture is shown in the change that picture switches to PPT vision signal corresponding by image processing apparatus 130.Such as, for showing under single-image pattern that picture is the situation of PPT picture, and when key frame is PPT picture under picture-in-picture mode or picture-outside-picture mode, serving as a teacher when carrying out PPT page turning, picture switching action can't be triggered.For showing under single-image pattern that picture is the situation of non-PPT picture, and when under picture-in-picture mode or picture-outside-picture mode, key frame is non-PPT picture, if when PPT teacher carries out page turning to PPT, PPT vision signal changes thus triggers image switching action, image processing apparatus 130 generates the notification signal of PPT vision signal and is sent to switching control 150, switching control 150 generates switching signal according to the notification signal of PPT vision signal and is sent to image processing apparatus 130, acquiescence is shown that picture is shown in the change that picture switches to PPT vision signal corresponding by image processing apparatus 130, be specially and the displaying picture of current display is switched to PPT picture, or the key frame of current display is switched to PPT picture.Be appreciated that, in other embodiments, image processing apparatus 130 judges whether there is the vision signal triggering picture switching action in multi-channel video signal, also can for judge whether teacher's vision signal, student's vision signal and writing on the blackboard vision signal trigger picture switching action.
With reference to figure 5, under single-image pattern, acquiescence shows that picture is teacher's picture, after image processing apparatus 130 performs picture switching action, shows that picture switches to PPT picture by teacher's picture.With reference to figure 6, under picture-in-picture mode, acquiescence show picture for teacher's picture be key frame, PPT picture is auxiliary image, and after image processing apparatus 130 performs picture switching action, key frame switches to PPT picture by teacher's picture.With reference to figure 7, under picture-outside-picture mode, acquiescence show picture for teacher's picture be key frame, PPT picture and student's picture are auxiliary image, and after image processing apparatus 130 performs picture switching action, key frame switches to PPT picture.Therefore, trigger image switching action in PPT vision signal, during as the PPT page turning of teacher to auxiliary image, can image switching, make user on terminal display, clearly see the PPT of change, strengthen the classroom sense of reality of user.Particularly, terminal display is the terminal that computer or mobile phone etc. possess Presentation Function.
Particularly, image processing apparatus 130 is first processor, switching control 150 is the second processor, and first processor and the second processor can be specifically the processors such as FPGA (Field-Programmable Gate Array field programmable gate array), ARM, DSP (Digital Signal Processing Digital Signal Processing).First processor processes image, and the second processor controls first processor, by using two processors to carry out picture switching controls simultaneously, improves the efficiency of process.
Wherein in an embodiment, with reference to figure 8, recording and broadcasting system also comprises analog-digital commutator 120, for carrying out analog-to-digital conversion to multi-channel video signal, obtain the vision signal of multiply digital signals, image processing apparatus 130 generates to give tacit consent to according to the vision signal of multiply digital signals and according to default image mode shows picture.Digital signal is conveniently carried out process to vision signal and is obtained showing picture.Particularly, mode conversion device is AD converter.
Wherein in an embodiment, with reference to figure 9, image processing apparatus 130 comprises processor 131 and set of time device 133, and processor 131 is connection signal harvester 110, set of time device 133 and switching control 150 respectively, and set of time device 133 is for arranging reserved duration.Processor 131 is according to multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control 150.After processor 131 generates the change displaying picture after image switching according to switching signal, judge that showing change shows whether the time of picture is more than or equal to reserved duration, and when showing change and showing that the time of picture is more than or equal to reserved duration, image switching shows picture to acquiescence.Particularly, reserved duration can be 5 seconds or 10 seconds, is appreciated that in other embodiments, and reserved duration also can be other numerical value.
Under normal circumstances, the image mode of acquiescence is the picture display mode being most suitable for user's viewing, such as usually arranging teacher's picture is the displaying picture of single-image pattern or the key frame of picture-in-picture mode and picture-outside-picture mode, facilitate user to understand the dynamic of teacher in time, form a kind of experience sense placing oneself in the midst of true class.After picture switches, picture corresponding for the vision signal that picture switching action occurs to trigger is set to show picture or key frame, as the PPT after page turning, makes user understand classroom in time dynamic.By arranging reserved duration, can determine to change the displaying time showing picture, finally turning back to acquiescence and showing picture, the image mosaic mode of image mode can be adjusted in time, improving the sense of reality that user experiences classroom.
Wherein in an embodiment, image processing apparatus 130 also comprises image uploading device (not shown), after showing picture in generation acquiescence, show that picture generates recorded broadcast video and uploads according to acquiescence, and/or for after the change displaying picture after generating image switching, show that picture generates recorded broadcast video and uploads according to change.Recorded broadcast video uploads onto the server by image uploading implement body, and user can come program request or the live recorded broadcast video uploaded in the server by terminal display interconnection network.
Wherein in an embodiment, with reference to Figure 10, switching control 150 comprises controller 151 and configuration arranges device 153, and controller 151 connects image processing apparatus 130 respectively and configuration arranges device 153, and configuration arranges device 153 for storing default vision signal classification.After image processing apparatus 130 sends notification signal, controller 151 judges whether the classification of the vision signal triggering picture switching action belongs to default vision signal classification, if so, then generates switching signal according to notification signal and is sent to image processing apparatus 130.Preset vision signal classification to realize by arranging configuration, such as, serve as a teacher when not want the courseware PPT in classroom as the displaying picture of single-image pattern or as the key frame of picture-in-picture mode and picture-outside-picture mode, default PPT vision signal can not be set when arranging configuration, even if thus detect that PPT vision signal triggers picture switching action, switching control 150 also can not send switching signal, therefore can not change original acquiescence displaying picture.By arranging default vision signal classification, can be implemented in image switching and not selecting between image switching, improve autonomous selectivity.Be appreciated that in other embodiments, configuration arranges device 153 and also may be used for arranging other parameters.
Wherein in an embodiment, switching control 150 also comprises the priority analysis device (not shown) of connection control device 151, for judging the priority of vision signal according to notification signal and being sent to controller 151, controller 151 generates switching signal according to priority and is sent to image processing apparatus 130.When to have two kinds or two or more vision signals triggers picture switching action simultaneously, priority analysis device sorts to various video signal according to the priority of default setting, controller 151 is control the control signal of image processing apparatus 130 according to priority execution picture switching action according to the switching signal that the sequence of priority analysis device obtains, and achieves the switching of multiple picture.
Wherein in an embodiment, switching control 150 also comprises the command receiver (not shown) of connection control device 151, for receiving ordering instruction and being sent to controller 151, controller 151 generates switching signal according to ordering instruction and is sent to image processing apparatus 130.When to have two kinds or two or more vision signals triggers picture switching action simultaneously, command receiver receives the ordering instruction of artificial input and is sent to controller 151, controller 151 is control the control signal that image processing apparatus 130 performs picture switching action in order according to the switching signal that ordering instruction obtains, and achieves the switching of multiple picture equally.
Wherein in an embodiment, image processing apparatus 130 passes through I
2c bus is connected switching control 150 with IO control line.Be appreciated that in other embodiments, image processing apparatus 130 can also be connected by other means with switching control 150, such as, only adopt I
2c bus connects.
Above-mentioned a kind of recording and broadcasting system, by detecting the multi-channel video signal collected, judge whether to there is the vision signal triggering picture switching action, if then image switching, generate change and show picture, otherwise show the acquiescence obtained according to multi-channel video signal and show picture, the intelligence achieving picture switches, and improves the efficiency that picture switches.
With reference to Figure 11, in present pre-ferred embodiments, a kind of preferred embodiment of intelligent image switching method of recording and broadcasting system, realizes based on above-mentioned recording and broadcasting system, comprises step S110 to step S170.
S110: signal pickup assembly gathers multi-channel video signal and is sent to image processing apparatus.Vision signal can be analog signal also can be digital signal.
Wherein in an embodiment, comprise at least two kinds in PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal.Such as, can be only have PPT vision signal and teacher's vision signal, also can be comprise above-mentioned all vision signals.Particularly, signal pickup assembly can comprise teacher's camera, student's camera, writing on the blackboard camera and PPT signal connecting line, is respectively used to gather teacher's vision signal, student's vision signal, writing on the blackboard vision signal and PPT vision signal.PPT vision signal connects the PPT content of the computer interface acquisition teacher courseware of teacher by PPT signal connecting line, thus obtains PPT vision signal.
S130: image processing apparatus is according to multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control.Otherwise display acquiescence shows picture.Particularly, notification signal is that notice exists the vision signal triggering image switching action.
Show that picture is the picture corresponding with multi-channel video signal, PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal can obtain PPT picture, teacher's picture, student's picture and writing on the blackboard picture respectively.
Default image mode is the image mode that user pre-sets, and is presented as the image mosaic mode of showing picture.Particularly, image mode comprises single-image pattern, picture-in-picture mode and picture-outside-picture mode, and wherein picture-in-picture mode and picture-outside-picture mode are the displaying picture of key frame and auxiliary image splicing.With reference to figure 2, be single-image pattern, show in picture the one of showing only in teacher's picture, PPT picture, student's picture or writing on the blackboard picture.With reference to figure 3, being the picture-in-picture mode of 1 key frame and 1 auxiliary image splicing, with reference to figure 4, is that 1 key frame and 3 auxiliary images splice the picture-outside-picture mode obtained.Be appreciated that the number of auxiliary image in picture-in-picture mode and picture-outside-picture mode also can be other quantity.
Wherein in an embodiment, in step S130, image processing apparatus is according to multi-channel video signal, generate acquiescence according to default image mode and show that the step of picture is specially: analog-to-digital conversion is carried out to multi-channel video signal, after obtaining the vision signal of digital signal, generate acquiescence according to default image mode and show picture.Digital signal is conveniently carried out process to vision signal and is obtained showing picture.
The vision signal triggering picture switching action refers to the vision signal that change occurs to preset in the vision signal that the displaying picture that do not show is corresponding, or refers to the vision signal that change occurs in the vision signal that auxiliary image is corresponding to preset.The vision signal that change wherein occurs to preset refers to change and reaches pre-conditioned vision signal.Therefore, only have when vision signal corresponding to the displaying picture do not shown under single-image pattern occurs to preset change, and when vision signal corresponding to auxiliary image under picture-in-picture mode or picture-outside-picture mode occurs to preset change, just can trigger picture switching action.Under single-image pattern, image switching action is specially the picture switching to the vision signal of triggering picture switching action corresponding in the displaying picture of current display, such as, current displaying picture is switched to PPT picture by teacher's picture.Under picture-in-picture mode or picture-outside-picture mode, image switching action is specially the picture switching to the vision signal of triggering picture switching action corresponding the key frame of current display, and such as switching current key frame by teacher's picture is PPT picture.
Multi-channel video signal comprises in the embodiment of PPT vision signal, in step S130, image processing apparatus judges whether there is the vision signal triggering picture switching action in multi-channel video signal, be specially image processing apparatus and judge whether PPT vision signal triggers picture switching action, namely judge whether the PPT vision signal of PPT vision signal or the auxiliary image do not shown changes, if so, then generate the notification signal of PPT vision signal and be sent to switching control.Such as, for showing under single-image pattern that picture is the situation of PPT picture, and when key frame is PPT picture under picture-in-picture mode or picture-outside-picture mode, serving as a teacher when carrying out PPT page turning, picture switching action can't be triggered.For showing under single-image pattern that picture is the situation of non-PPT picture, and when under picture-in-picture mode or picture-outside-picture mode, key frame is non-PPT picture, if when PPT teacher carries out page turning to PPT, PPT vision signal changes thus triggers image switching action.Be appreciated that, in other embodiments, image processing apparatus judges the step that whether there is the vision signal triggering picture switching action in multi-channel video signal, also can for judge whether teacher's vision signal, student's vision signal and writing on the blackboard vision signal trigger picture switching action.
S150: switching control generates switching signal according to notification signal and is sent to image processing apparatus.Particularly, switching signal is the control signal performing image switching action.Image processing apparatus is first processor, and switching control is the second processor, by using two processors to carry out picture switching controls simultaneously, improves the efficiency of process.
Wherein in an embodiment, step S150 is: switching control judges the priority of vision signal according to notification signal, and generates switching signal according to priority and be sent to image processing apparatus.When to have two kinds or two or more vision signals triggers picture switching action simultaneously, switching control sorts to various video signal according to the priority of default setting, the switching signal obtained according to the sequence of priority analysis device is control image processing apparatus performs picture switching action control signal according to priority, achieves the switching of multiple picture.
Wherein in an embodiment, step S150 is: switching control reception notification signal and ordering instruction, and generates switching signal according to ordering instruction and be sent to image processing apparatus.When to have two kinds or two or more vision signals triggers picture switching action simultaneously, command receiver receives the ordering instruction of artificial input and is sent to controller, controller is control the control signal that image processing apparatus performs picture switching action in order according to the switching signal that ordering instruction obtains, and achieves the switching of multiple picture equally.
S170: image processing apparatus performs picture switching action according to switching signal, generates the change after image switching and shows picture.
Multi-channel video signal comprises in the embodiment of PPT vision signal, step S170 is, acquiescence is shown that picture is shown in the change that picture switches to PPT vision signal corresponding by image processing apparatus, be specially and the displaying picture of current display is switched to PPT picture, or the key frame of current display is switched to PPT picture.Such as, with reference to figure 6, under single-image pattern, acquiescence shows that picture is teacher's picture, after step S170 performs picture switching action, shows that picture switches to PPT picture by teacher's picture.With reference to figure 6, under picture-in-picture mode, acquiescence show picture for teacher's picture be key frame, PPT picture is auxiliary image, and after step S170 execution picture switching action, key frame switches to PPT picture by teacher's picture.With reference to figure 7, under picture-outside-picture mode, acquiescence show picture for teacher's picture be key frame, PPT picture and student's picture are auxiliary image, and after step S170 execution picture switching action, key frame switches to PPT picture.Therefore, when PPT vision signal triggers image switching action as the PPT page turning of teacher to auxiliary image, can image switching, make user on terminal display, see the PPT of change in time, strengthen the classroom sense of reality of user.Particularly, terminal display is the terminal that computer or mobile phone etc. possess Presentation Function.
With reference to Figure 12, wherein in an embodiment, in step S130, generate when there is the vision signal triggering picture switching action corresponding vision signal notification signal and after being sent to the step of switching control, switching control generates switching signal according to notification signal and before being sent to the step S150 of image processing apparatus, also comprise step S140: switching control judges whether the classification of the vision signal triggering picture switching action belongs to default vision signal classification, if, then perform step S150, otherwise display acquiescence shows picture.Preset vision signal classification to realize by arranging configuration, such as, serve as a teacher when not want the courseware PPT in classroom as the displaying picture of single-image pattern or as the key frame of picture-in-picture mode and picture-outside-picture mode, can PPT vision signal classification be set when arranging configuration, even if thus detect that PPT vision signal triggers image switching action, switching control also can not send switching signal, therefore can not change original acquiescence displaying picture.By arranging default vision signal classification, can be implemented in image switching and not selecting between image switching, improve autonomous selectivity.
Wherein in an embodiment, with reference to Figure 13, image processing apparatus performs picture switching action according to switching signal, after generating the step S170 of the change displaying picture after image switching, also comprise step S180: image processing apparatus judges that showing change shows whether the time of picture is more than or equal to reserved duration; If so, step S190 is performed: image processing apparatus image switching shows picture to acquiescence, otherwise, continue display change display frame.Particularly, reserved duration can be 5 seconds or 10 seconds, is appreciated that in other embodiments, and reserved duration also can be other numerical value.
Under normal circumstances, the image mode of acquiescence is the picture display mode being most suitable for user's viewing, such as usually arranging teacher's picture is the displaying picture of single-image pattern or the key frame of picture-in-picture mode and picture-outside-picture mode, facilitate user to understand the dynamic of teacher in time, form a kind of experience sense placing oneself in the midst of true class.After picture switches, picture corresponding for the vision signal that picture switching action occurs to trigger is set to show picture or key frame, as the PPT after page turning, makes user understand classroom in time dynamic.By arranging reserved duration, can determine to change the displaying time showing picture, finally turning back to acquiescence and showing picture, the image mosaic mode of image mode can be adjusted in time, improving the sense of reality that user experiences classroom.
Wherein in an embodiment, generate acquiescence in step S130 to show in picture and S170 to generate also to comprise after picture is shown in change and show that picture or change show that picture generates recorded broadcast video and the step uploaded according to acquiescence, be specially and uploaded onto the server by recorded broadcast video, user can come program request or the live recorded broadcast video uploaded in the server by terminal display interconnection network.
The intelligent image switching method of above-mentioned a kind of recording and broadcasting system, the intelligence achieving picture equally switches, and improves the efficiency that picture switches.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a recording and broadcasting system, is characterized in that, comprises signal pickup assembly, image processing apparatus and switching control, and described image processing apparatus connects described signal pickup assembly and switching control respectively;
Described signal pickup assembly gathers multi-channel video signal and is sent to described image processing apparatus;
Described image processing apparatus is according to described multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in described multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control;
Described switching control generates switching signal according to described notification signal and is sent to described image processing apparatus;
Described image processing apparatus also performs picture switching action according to described switching signal, generates the change after image switching and shows picture.
2. recording and broadcasting system according to claim 1, is characterized in that, described multi-channel video signal comprises at least two kinds in PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal.
3. recording and broadcasting system according to claim 2, it is characterized in that, described image processing apparatus judges whether there is the vision signal triggering picture switching action in described multi-channel video signal, be specially and judge whether described PPT vision signal triggers picture switching action, if so, then generate the notification signal of PPT vision signal and be sent to described switching control;
Described image processing apparatus performs picture switching action according to described switching signal, generates the change after image switching and shows picture, be specially, and described acquiescence is shown that picture is shown in the change that picture switches to PPT vision signal corresponding by described image processing apparatus.
4. recording and broadcasting system according to claim 1, it is characterized in that, described switching control comprises controller and configuration arranges device, and described controller connects described image processing apparatus respectively and configuration arranges device, and described configuration arranges device for storing default vision signal classification;
After described image processing apparatus sends described notification signal, described controller judges whether the classification of the vision signal triggering picture switching action belongs to described default vision signal classification, if so, then generate described switching signal according to described notification signal and be sent to described image processing apparatus.
5. recording and broadcasting system according to claim 1, it is characterized in that, described image processing apparatus comprises processor and set of time device, and described processor connects described signal pickup assembly, set of time device and switching control respectively, and described set of time device is used for arranging reserved duration;
Described processor is according to described multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in described multi-channel video signal, whether to there is the vision signal triggering picture switching action, and generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to described switching control, after described processor generates the change displaying picture after image switching according to described switching signal, judge that showing described change shows whether the time of picture is more than or equal to described reserved duration, and when showing described change and showing that the time of picture is more than or equal to described reserved duration, image switching shows picture to described acquiescence.
6. a picture changeover method for recording and broadcasting system, is characterized in that, comprising:
Signal pickup assembly gathers multi-channel video signal and is sent to image processing apparatus;
Image processing apparatus is according to described multi-channel video signal, generate acquiescence according to default image mode and show picture, and judge in described multi-channel video signal, whether to there is the vision signal triggering picture switching action, generate the notification signal of corresponding vision signal when there is the vision signal triggering picture switching action and be sent to switching control;
Described switching control generates switching signal according to described notification signal and is sent to described image processing apparatus;
Described image processing apparatus performs picture switching action according to described switching signal, generates the change after image switching and shows picture.
7. the picture changeover method of recording and broadcasting system according to claim 6, is characterized in that, described multi-channel video signal comprises at least two kinds in PPT vision signal, teacher's vision signal, student's vision signal and writing on the blackboard vision signal.
8. the picture changeover method of recording and broadcasting system according to claim 7, is characterized in that, described image processing apparatus judges whether there is the vision signal triggering picture switching action in described multi-channel video signal, for:
Described image processing apparatus judges whether described PPT vision signal triggers the vision signal of described picture switching action, if so, then generates the notification signal of PPT vision signal and is sent to described switching control;
Described image processing apparatus performs picture switching action according to described switching signal, generates the step that picture is shown in the change after image switching, is specially:
Described acquiescence is shown that picture is shown in the change that picture switches to PPT vision signal corresponding by described image processing apparatus.
9. the picture changeover method of recording and broadcasting system according to claim 6, is characterized in that,
Image processing apparatus generates the notification signal of corresponding vision signal and after being sent to switching control, described switching control generates switching signal according to described notification signal and before being sent to described image processing apparatus, also comprises:
Described switching control judges whether the classification of the vision signal triggering picture switching action belongs to default vision signal classification, if so, then performs describedly generate switching signal according to described notification signal and be sent to the step of described image processing apparatus.
10. the picture changeover method of recording and broadcasting system according to claim 6, is characterized in that, described image processing apparatus performs picture switching action according to described switching signal, after generating the change displaying picture after image switching, also comprises:
Described image processing apparatus judges that showing described change shows whether the time of picture is more than or equal to reserved duration;
If so, then described image processing apparatus image switching shows picture to described acquiescence.
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