CN111246224A - Video live broadcast method and video live broadcast system - Google Patents
Video live broadcast method and video live broadcast system Download PDFInfo
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Abstract
The invention discloses a live video broadcast method, which is applied to a live video broadcast system, wherein the live video broadcast system comprises at least one shooting end, a service platform and a client, the shooting end at least comprises a camera module, a pickup module and a communication module, the shooting end sends a first data stream to the service platform, and the service platform finally generates a client output data stream after processing the first data stream through fusion splicing, target identification, information shielding and the like and sends the client output data stream to the client. The invention also discloses a live video broadcast system which comprises a shooting end, a service platform and a client, wherein the shooting end comprises a camera module, a pickup module and a communication module, the camera module comprises at least one camera, and the focal length of an imaging group of at least one camera in the camera module is set to be in a zoom mode.
Description
Technical Field
The invention relates to a panoramic video live broadcast technology, in particular to a video live broadcast method.
Background
With the development of computer technology, live video becomes the trend of the current, live panoramic video is a new direction with great development prospect in the field of live broadcast, and pictures are collected by a panoramic camera device and then spliced into panoramic pictures, so that the video image collection of a panoramic area from 180 degrees to 720 degrees can be realized. The live broadcast of the panoramic video can quickly and accurately transmit the site information, and more people can watch the live broadcast through websites or mobile phones due to the strong presence.
Disclosure of Invention
The invention aims to provide a video live broadcasting method.
A live video broadcast method is applied to a live video broadcast system, the live video broadcast system comprises at least one shooting end, a service platform and a client, the shooting end at least comprises a camera module, a pickup module and a communication module, the shooting visual angle of the camera module is not less than 360 degrees in the horizontal direction, the camera module is configured to acquire a video image, the pickup module is configured to acquire audio data, the shooting end is in communication connection with the service platform, the client is configured to receive information input of a user and is in communication connection with the service platform, and the live video broadcast method is characterized by comprising the following steps:
s10: at least one shooting end sends a first data stream to a service platform;
s20: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s30: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of carrier identification of target physical information of the client;
s40: the service platform analyzes the target association request to obtain a pre-association target identifier, processes a part of the second data stream associated with the target identifier matched with the pre-association target identifier to obtain a third data stream, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s50: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the third data stream;
s60: the service platform generates output data stream transmission of a user side;
s70: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
Optionally, before step S40, the following method steps are further included:
s31: the service platform judges the legality of the target association request, executes S40 if the target association request is judged to be legal, and returns to execute S30 if the target association request is judged to be illegal.
Optionally, before the service platform generates the user-side output data stream, the method further includes:
s51: and the service platform carries out additional information processing on the target corresponding to the target identification matched with the pre-associated target identification in the data stream.
Optionally, the following method steps are further included after step S70:
s80: the client initiates a user information presentation request to the service platform, the service platform analyzes the user information presentation request to generate user pre-presentation information, and transmits the user pre-presentation information to the shooting end, and the shooting end presents the user pre-presentation information to a target corresponding to a target identifier associated with the client 30.
The invention also provides another video live broadcasting method, which comprises the following steps:
s11: the method comprises the steps that a service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information and high-definition image information acquired by at least one camera with a zooming mode;
s21: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s31: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of target physical information and a carrier identifier of the client;
s41: the service platform analyzes the target association request to obtain a pre-association target identifier, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s100: judging whether the client sends a high-definition image request to the service platform, if so, jumping to S110, and if not, jumping to S120;
s110: the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and generates a fourth data stream of the high-definition image containing the target identifier;
s120: the service platform removes high-definition image information from the third data stream to generate a fourth data stream;
s52: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the fourth data stream;
s61: the service platform generates output data stream transmission of a user side;
s71: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
The invention also provides another video live broadcasting method, which comprises the following steps:
s13: the service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information acquired by a shooting module;
s23, the service platform processes the first data flow to obtain at least one target mark;
s33, the service platform receives a target association request of the client, wherein the target association request at least comprises a pre-association target identifier and a carrier identifier of the client;
s43, the service platform analyzes the target association request to obtain the pre-association target mark, and associates the client initiating the target association request with the target mark matched with the pre-association target mark in the third data stream;
s53, the service platform shields the data information corresponding to other target identifiers which are not matched with the pre-associated target identifiers in the third data stream;
s310, judging whether the client sends a high-definition image request to the service platform, and if not, jumping to the step S63;
s320, the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and sends the high-definition shooting requirement of the target identifier to a shooting end;
s330, the shooting end acquires high-definition image information of the target identification and sends the high-definition image information to a service platform;
s340, the service platform receives the high-definition image information containing the target identifier and generates a fourth data stream containing the high-definition image of the target identifier according to the third data stream;
s63, the service platform generates user end output data flow;
s73, the service platform transmits the client-side output data stream to the client that initiated the target association request.
The invention also provides a live video broadcast system, which comprises a shooting end, a service platform and a client, wherein the shooting end comprises a camera module, a pickup module and a communication module, the camera module comprises at least one camera and is configured to obtain video images, the pickup module is configured to obtain audio data, the shooting end is in communication connection with the service platform, the client is configured to receive information input of a user and is in communication connection with the service platform, and the focal length of an imaging group of at least one camera in the camera module is set to be in a zooming mode.
Optionally, the video live broadcasting system provided by the invention further comprises a gesture voice conversion module, which is used for converting voice and/or text information into gesture operation and converting the gesture operation into voice and/or text information.
Optionally, the live video broadcasting system provided by the invention further comprises a braille voice conversion module, which is used for converting voice and/or text information into braille and converting braille into voice and/or text information.
The video live broadcast method provided by the invention can associate the target in the target scene shot by the video with the corresponding client, and can effectively protect the privacy information of the non-associated target in the client through the shielding treatment of the data information. Privacy protection is provided while bringing a real-time immersive panoramic video experience to the user.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only some embodiments of the invention and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 is a schematic application diagram of a video live broadcast system of a target scene according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a target attribute of a second data stream according to an embodiment of the present invention.
Fig. 3 is a flowchart of a video live broadcasting method according to an embodiment of the present invention.
Fig. 4 is a flowchart of another video live broadcasting method according to an embodiment of the present invention.
Fig. 5 is a flowchart of another video live broadcasting method according to an embodiment of the present invention.
Fig. 6 is a flowchart of another video live broadcasting method according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an imaging group of a camera according to an embodiment of the present invention.
Fig. 8 is a flowchart of another video live broadcasting method according to an embodiment of the present invention.
Fig. 9 is a flowchart of another video live broadcasting method according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, a live video broadcast system includes a shooting end 10, a service platform 20 and a client 30, where the shooting end 10 includes a camera module, a sound pickup module and a communication module. The camera module is configured to acquire video images, the shooting visual angle of the camera module is not less than 360 degrees in the horizontal direction, the camera module can comprise two fisheye cameras, the horizontal shooting visual angle of a single fisheye camera is greater than 180 degrees, the vertical shooting visual angle is greater than 120 degrees, in another possible implementation mode, the camera module can also comprise two or more cameras, wherein the horizontal shooting visual angle of each camera can be smaller, for example, the camera module comprises 6 cameras, the horizontal shooting visual angle of each camera is 90 degrees, the smaller shooting visual angle can obtain better shooting image definition and image quality, meanwhile, the later distortion correction of the video images shot by the cameras and the fusion splicing processing of the video images of the cameras are facilitated, and the number of the cameras contained in the camera module is not limited. And the focal length of the imaging group of at least one camera can be set to be in a fixed focus mode or a variable focus mode, and the camera in the variable focus mode has different shooting definitions under different imaging focal lengths. The sound pickup module is configured to acquire audio data, and may specifically be a microphone, or may be a microphone array module, in one possible implementation, the sound pickup module and the camera module may be integrated, and the microphone may be generally disposed in the camera module, and in another possible implementation, the sound pickup module is disposed at a close distance of at least one target in a target scene where the camera is located, for example, on a body of the target, or on an object close to the target, and is configured to receive voice information of the at least one target. In another possible implementation manner, the camera may further include an audio playing module or an image playing module, so that the camera may be configured to have an audio playing function or a video image playing function. In another possible implementation manner, the shooting end further comprises a gesture voice conversion module, which is arranged at a close distance of at least one target in a target scene where the shooting end is located, and is used for receiving gesture operations of the target, such as sign language of a deaf mute, converting the gesture operations into voice audio, transmitting the voice audio to the service platform, converting the voice audio sent from the service platform to the target into gesture operations, and presenting the gesture operations to the target in a video image manner. In another possible implementation manner, the shooting end further comprises a braille voice conversion module, the braille voice conversion module comprises a braille display assembly and a braille input assembly, the braille display assembly and the braille input assembly are arranged at a close distance of at least one target and used for converting voice and audio sent by the service platform into braille, the braille is presented to the target through the braille display assembly arranged at the target, such as a braille display machine, and the braille information is input and converted into character and/or voice information through the braille input assembly, such as a braille keyboard, and then is sent to the service platform. In another possible implementation, the video live broadcasting system includes two or more shooting terminals, and the shooting terminals may be placed in the same target scene or in different target scenes.
The shooting terminal 10 is communicably connected to the service platform 20 through a communication module, and the communication module is used for exchanging data with the service platform 20 through a wireless communication mode, such as Wi-Fi, and/or a wired communication mode, such as an optical fiber cable. The service platform can be operated on a cloud server or a local server.
The client 30 is configured to receive information input from a user and is capable of communicative coupling with the service platform 20. The client 30 operates on an electronic device with a data communication function, such as a smart phone, a smart wearable device (e.g., a virtual reality display device, an augmented reality display device), a tablet computer, a desktop computer, a projector, and the like, which have a wireless communication connection function such as bluetooth and WiFi and/or a wired communication connection function through a cable. Fig. 3 is a video live broadcasting method provided in an embodiment of the present invention, including:
s10: at least one shooting end sends a first data stream to a service platform;
s20: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s30: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of target physical information and a carrier identifier of the client;
s40: the service platform analyzes the target association request to obtain a pre-association target identifier, processes a part of the second data stream associated with the target identifier matched with the pre-association target identifier to obtain a third data stream, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s50: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the third data stream;
s60: the service platform generates output data stream transmission of a user side;
s70: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
The shooting end 10 shoots a target scene, wherein the target scene includes a background scene and a target, and as shown in fig. 1, the target scene is a schematic diagram of the target scene with a hospital intensive care unit as a background scene, wherein the target is a patient, and includes a first target 61 and a second target 62. The shooting end 10 is arranged in the target scene, and is configured to obtain video image data of the target scene in real time and transmit the video image data to the service platform 20, and for convenience of description, a data stream containing video image information and transmitted from the shooting end 10 to the service platform 20 is recorded as a first data stream. In a possible implementation manner, the live video broadcast system includes two or more shooting ends, the two or more shooting ends are placed in the same target scene, all the shooting ends shoot the target scene and send the obtained video image of the target scene to the service platform 20 in a data stream manner, and the service platform 20 receives the sent data streams of all the shooting ends and generates a first data stream. In another possible embodiment, the live video broadcast system includes two or more shooting terminals, and at least two shooting terminals are disposed in different target scenes, taking a live video broadcast system with two shooting terminals and a target scene based on a hospital critical illness room as an example, where one of the shooting terminals is disposed in a first critical illness room and the other shooting terminal is disposed in a second critical illness room, and the two shooting terminals respectively send first data streams including video image information of the target scene to the service platform.
The service platform 20 transmits the first data stream to the service platform 20 through the communication module, and the service platform 20 first performs preprocessing on the first data stream, such as distortion and chromatic aberration correction of an image, splicing and fusion processing of a video image, noise reduction processing of an audio, and the like. For convenience of description, the data stream of the audio/video image after the preprocessing is referred to as a preprocessing data stream. In a possible implementation manner, the preprocessing of the audio/video images may be performed at the shooting end 10, and the shooting end 10 sends the processed data stream of the audio/video images to the service platform 20, in which case the first data stream sent by the shooting end and received by the service platform 20 is the preprocessed data stream. The service platform 20 then performs a target recognition process on the video image in the preprocessed data stream, where the target recognition process may use an existing target detection recognition algorithm, such as R-CNN, Fast R-CNN, etc., to perform target recognition on the target and obtain physical information of the target, where the physical information of the target at least includes a name of the target, and for the target scenario shown in fig. 1, the physical information of the target may also include a visit number, and in other target scenarios, such as a concert location, the physical information of the target may also include a program name, etc. The service platform 20 adds a target identifier to each target at the same time, for example, the target identifier of the first target 61 corresponding to the pre-processed data stream is marked as Object1, the target identifier of the second target 62 corresponding to the pre-processed data stream is marked as Object2, and the target identifier of the third target 63 corresponding to the pre-processed data stream is marked as Object 3. The objects present in the first data stream corresponding to the object scene at different time periods may not be the same, for example, in the first time period, the target scene includes the first target 61 and the second target 62, after the service platform 20 receives the first data stream including the first target 61 and the second target 62 and performs preprocessing to obtain the corresponding preprocessed data stream, performs target identification processing, adding Object identification Object1 to the first Object 61, adding Object identification Object2 to the second Object 62, when another new target is added to the target scene in the second time period, the service platform 20 detects and recognizes that the preprocessed data stream corresponding to the second time period contains the new target through target recognition processing, and at this time, the service platform 20 adds a target identifier to the new target, where the target identifier is different from the target identifier of any one of the existing other targets.
And recording the data stream subjected to the target identification processing as a second data stream. The service platform 20 establishes a corresponding relationship table between the target in the target scene and the target identifier in the second data stream, and records the corresponding relationship as the target attribute of the second data stream, as shown in fig. 2, the attribute value corresponding to each target in the target scene includes target physical information and a target identifier, when a target is newly added in the target scene, the second data stream including video image information of the newly added target is subjected to target identification processing, and when the newly added target is identified, a target identifier is given to the newly added target, and the attribute information of the target is newly added in the list of target attributes. The target attribute may further include other information, such as a target scene identifier, when the plurality of cameras are set in different target scenes, the cameras in each target scene send respective corresponding first data streams to the service platform, the service platform performs preprocessing and target identification processing on the first data streams, assigns target scene identifiers to each target scene for distinction, adds identification marks to the targets in each identified target scene and assigns different target identifiers, and adds a target scene identifier where the corresponding target is located to each target identifier in the list of target attributes.
The client 30 applies for the corresponding data stream from the service platform 20 by sending a target association request to the service platform 20.
In a possible embodiment, a relationship table between target physical information and corresponding client carrier identifiers is preset on the service platform 20, where the target physical information and the client carrier identifiers may be one-to-one, or one-to-many, many-to-one, or many-to-many, for example, physical information of a target corresponds to a client carrier identifier, in which case only the client 30 on a carrier (e.g., a smart phone) having the client carrier identifier may obtain a client output data stream including the target identifier corresponding to the target physical information. The target physical information of one target corresponds to a plurality of client carrier identifiers, in this case, the client 30 on the carrier having one of the plurality of client carrier identifiers identical to the target identifier can acquire the client output data stream including the target identifier corresponding to the target physical information, in the case of many-to-one, the plurality of target physical information corresponds to one client carrier identifier, and similarly, in the case of many-to-many, the plurality of target physical information corresponds to a plurality of client carrier identifiers. When the client 30 on the carrier identical to the client carrier identifier in the preset relationship table on the service platform 20 is started, the client 30 first sends a target association request to the service platform 20, where the target association request specifically includes a client bearer identifier of the client 30, the service platform 20 receives and parses the target association request, according to the client carrier identification in the target association request, acquiring target physical information corresponding to the client carrier identification from a preset relation table, and for the condition of one-to-many or one-to-one in the preset relation table, the client carrier identifier corresponds to a target physical information, and the service platform 20 obtains a corresponding target identifier according to the target physical information and the target attribute of the second data stream, where the target identifier is a pre-associated target identifier corresponding to the client 30. For the condition of many-to-one or many-to-many in the preset relationship table, the client carrier identifier corresponds to a plurality of target physical information, the client 30 receives the selection input of at least one target physical information from the user and sends the selected target physical information to the service platform 20, and the service platform 20 obtains a corresponding target identifier according to the selected target physical information and the target attribute of the second data stream, where the target identifier is a pre-associated target identifier corresponding to the client 30.
In another possible embodiment, the client 30 receives a pre-association target information input of a user, and initiates a target association request to the service platform 20, where the pre-association target information input of the user at least includes target physical information, and the client 30 generates the target association request and sends the target association request to the service platform 20, where the target association request includes the target physical information and a client bearer identifier of a bearer running the client 30. The service platform 20 parses the target association request, and obtains a corresponding target identifier according to the target physical information in the target association request and the target attribute of the second data stream, where the target identifier is a pre-association target identifier.
In yet another possible implementation, as shown in fig. 5, after receiving the target association request sent by the client 30, the service platform 20 first determines the validity of the target association request, and if the target association request is determined to be valid, the step S40 is executed, and if the target association request is determined to be invalid, the step S30 is executed again. The service platform 20 is preset with an authority relation table of target physical information and corresponding authority information, the client 30 receives information input of a user, generates a target association request, and initiates the target association request to the service platform 20, the information input of the user includes the target physical information and the authority information, and the target association request includes the target physical information, the authority information and a client carrier identifier of a carrier for operating the client 30. The service platform 20 performs validity judgment on the target association request, that is, according to the authority relationship table, judges whether the authority information in the target association request matches the authority information in the authority relationship table corresponding to the target physical information in the target association request, and if the authority information in the target association request matches the authority information in the authority relationship table, judges that the target association request is valid. If not, the client determines that the data stream is illegal, the service platform 20 will not send the data stream containing the audio/video image of the target scene to the client 30, and the service platform 20 continues to receive the target association request sent by the client 30 and performs validity determination until the data stream is legal. After the service platform 20 determines that the target association request is legal, the service platform 20 may obtain a corresponding target identifier according to the target physical information in the target association request and the target attribute of the second data stream, where the target identifier is a pre-association target identifier.
The service platform 20 processes the second data stream according to the pre-associated target identifier, obtains a part of the second data stream associated with the target identifier matched with the pre-associated target identifier, and generates a third data stream. For the situation that the target corresponding to the pre-associated target identifier is in a target scene, the part of the second data stream associated with the target identifier of the target is the second data stream; for the case that two or more cameras are placed in different target scenes and the target corresponding to the pre-associated target identifier is only in one of the target scenes, the portion of the second data stream associated with the target identifier of the target will be a quantity stream of the first data stream sent to the service platform 20 by the camera in the target scene after the pre-processing and the target identification processing. For example, the target is in a first target scene in a first time period, and in a second target scene in a second time period, a portion of the second data stream corresponding to the first time period, which is associated with the target identifier of the target, is a quantity stream of the second data stream, which is subjected to preprocessing and target identification processing and is sent by the shooting end to the service platform 20 in the first target scene, and a portion of the second data stream corresponding to the second time period, which is associated with the target identifier of the target, is a quantity stream of the second data stream, which is subjected to preprocessing and target identification processing and is sent by the shooting end to the service platform 20 in the first target scene.
The service platform 20 associates the client 30 with the target identifier matched with the pre-associated target identifier in the third data stream, that is, the client 30 on the carrier with the client carrier identifier can obtain the data stream of the audio/video image containing the pre-associated target identifier from the service platform 20.
The service platform 20 masks the data information corresponding to the other target identifiers in the third data stream, which are not matched with the pre-associated target identifiers. For example, the pre-associated Object identifier is the Object identifier Object1 corresponding to the first Object 61 in fig. 1, and the data information of the second Object 62 corresponding to the Object identifier Object2 in the third data stream is masked. The masking process may be performed by performing a mosaic process or a picture filling process on the second object 62 in the third data stream, which is not limited herein.
The service platform 20 generates a user-side output data stream for the data stream after the shielding processing, and sends the user-side output data stream to the client 30 on the carrier matched with the carrier identifier, that is, the client initiating the target association request.
Fig. 4 shows another live video broadcasting method provided by the present invention, and compared with the live video broadcasting method provided by the present invention shown in fig. 3, the method further includes the following steps after step S50:
s51: the service platform 20 may perform additional information processing on the target identifier matching the pre-associated target identifier in the data stream after the masking processing. For example, the pre-associated Object identifier is the Object identifier Object1 corresponding to the first Object 61 in fig. 1, and the service platform 20 may add additional information to the image position of the first Object 61 in the data stream, where the additional information may be one or more of text information, voice information, and image information for prompting the health status or illness state or diagnosis status of the first Object 61.
Obviously, step S51 may be executed before step S50, and the data stream before the masking process is subjected to the additional information process, and then the information masking process is performed to generate the client output data stream.
Fig. 6 shows another video live broadcasting method according to an embodiment of the present invention. The shooting end further comprises at least one of an audio playing module and an image playing module, the audio playing module is configured to output user pre-presentation information, the audio playing module is used for playing audio information, and the image playing module is used for playing audio and video images. In S80, the client 30 receives the user requirement input and sends a user information presentation request to the service platform 20, where the user information presentation request at least includes the user requirement input, the service platform 20 parses the user information presentation request, generates user pre-presentation information and transmits the user pre-presentation information to the camera, and the camera presents the user pre-presentation information to a target corresponding to a target identifier associated with the client 30. Referring to fig. 1, the camera includes a camera module, a sound pickup module, a communication module, and an image playing module, wherein the camera module, the sound pickup module, and the communication module are integrated, at least one audio playing module is disposed at a target, a first audio playing module (indicated by B1 in the figure) is disposed on a first target 61, such as a collar, and a second audio playing module (indicated by B2 in the figure) is disposed on a hospital bed where a second target 62 is located. The client 30 is associated with the Object identifier Object1 in the third data stream, the Object identifier Object1 corresponds to the first Object 61, the client 30 receives a user requirement input (such as an utterance input in a voice or text form and required to be conveyed to a patient) of a user (such as a family member of the patient) about the first Object 61, generates a user information presentation request including the utterance and sends the user information presentation request to the service platform 20, the service platform 20 generates user pre-presentation information according to the user information presentation request, the user pre-presentation information is specifically audio information including the utterance information and presented in a voice form and is sent to the shooting end, and the first audio playing module B1 in the shooting end plays audio of the user pre-presentation information to the first Object 61.
In one possible implementation mode, the camera module at the shooting end in the live video system is configured to shoot by at least one camera in a zoom mode, and the zoom mode of the camera can be realized in various modes, the camera can obtain different camera focal lengths through an internal variable-focus lens (such as a liquid crystal lens) or mechanical zooming (such as controlling the relative position relationship of a plurality of lenses), thereby achieving the effect of different shooting sharpness, such as that for the first target 61 in fig. 1, the resolution of the part corresponding to the first target 61 in the image shot by the camera at the small focal distance is lower than that of the part corresponding to the first target 61 in the image shot by the camera at the large focal distance, therefore, by controlling the camera to operate in a mode with a large focal length to obtain a high-definition image of the first target 61, the image information obtained thereby is referred to as high-definition image information. The information of the video image shot by the camera without the zoom mode in the camera module is recorded as normal image information. When a high-definition video image related to the first target 61 needs to be acquired, the camera is switched to a shooting mode with a large focal length, or when the camera module works, the camera continuously performs shooting in a mode of switching between a small focal length mode and a large focal length mode so as to acquire images related to two definitions of a normal image and a high-definition image of the first target 61. The zoom mode of the camera may also be implemented by having two imaging groups inside the camera, as shown in fig. 7, the first imaging group includes a first imaging component 83, a light splitting component 84 (such as a polarization splitter) and a first image sensor 81 (such as a CMOS or a CCD), the second imaging group includes a first imaging component 83, a light splitting component 84, a second imaging component 85 and a second image sensor 82, and the two imaging systems share the first imaging group 83. The optical imaging performance of the first image forming group is set to be approximately consistent with the optical imaging performance of other cameras in the camera module, so that the realization of an image fusion splicing algorithm of a plurality of cameras in the later period is facilitated, and the obtained image information is recorded as normal image information. Compared with the first group of imaging groups, the second group of imaging groups has longer focal length and smaller shooting visual angle, so that the image resolution and definition of the target shot by the second group of imaging groups are higher, and the image information obtained by the second group of imaging groups is recorded as high-definition image information. This camera during operation can set up to the first group image group and keep shooting state all the time, and the second group just can get into the shooting state when receiving service platform 20's high definition shooting demand instruction. When the camera works, the camera can also be set to be in a shooting state in which the first imaging group and the second imaging group are always kept, and a first data stream received by the service platform and sent by the shooting end comprises image information shot by the first imaging group and the second imaging group.
The method for obtaining high-definition image information in the large focal length mode includes multiple modes, one mode is that the camera only has one large focal length, when the camera is switched to the large focal length, the position of the image sensor is adjusted according to the distance from the camera to a target in a target scene corresponding to a target identification so as to obtain a high-definition target image, and for the condition that the distance from the target to the camera is within the range of clear imaging of the camera in the large focal length mode, high-definition imaging can be obtained without adjusting the image sensor. A further way may be that the zoom mode of the camera is implemented by a zoom lens, and the camera adjusts the zoom lens to enable high-definition imaging of the target according to the distance from the camera to the target in the target scene corresponding to the target identifier.
As shown in fig. 8, another video live broadcasting method provided in the embodiment of the present invention includes:
s11: the method comprises the steps that a service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information and high-definition image information acquired by at least one camera with a zooming mode;
s21: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s31: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of target physical information and a carrier identifier of the client;
s41: the service platform analyzes the target association request to obtain a pre-association target identifier, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s100: judging whether the client sends a high-definition image request to the service platform, if so, jumping to S110, and if not, jumping to S120;
s110: the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and generates a fourth data stream of the high-definition image containing the target identifier;
s120: the service platform removes high-definition image information from the third data stream to generate a fourth data stream;
s52: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the fourth data stream;
s61: the service platform generates output data stream transmission of a user side;
s71: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
In S11, the service platform 20 receives a first data stream of the camera, where the first data stream includes image information of two resolutions, one of which is normal image information and the other is high definition image information, acquired by at least one camera with a zoom mode. In S100, the service platform 20 determines whether the client 30 sends a high-definition image request to the service platform 20, where the high-definition image request includes a target identifier that the high-definition image needs to be transmitted. If the service platform 20 does not receive the request of the high-definition image, the third data stream is subjected to removal processing of the high-definition image information to generate a fourth data stream only containing normal image information, if the service platform 20 receives the request of the high-definition image sent by the client 30, the service platform 20 analyzes the high-definition image request to obtain a target identifier with a high-definition image requirement, the normal image information matched with the target identifier in the third data stream is replaced by the high-definition image information matched with the target identifier, and the fourth data stream is generated. The service platform 20 masks the data information corresponding to the other target identifiers in the fourth data stream that do not match the pre-associated target identifier in S31, and the production user end outputs the data stream and sends the data stream to the client 30.
As shown in fig. 9, another video live broadcasting method provided in the embodiment of the present invention includes:
s13: the service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information acquired by a shooting module;
s23, the service platform processes the first data flow to obtain at least one target mark;
s33, the service platform receives a target association request of the client, wherein the target association request at least comprises a pre-association target identifier and a carrier identifier of the client;
s43, the service platform analyzes the target association request to obtain the pre-association target mark, and associates the client initiating the target association request with the target mark matched with the pre-association target mark in the third data stream;
s53, the service platform shields the data information corresponding to other target identifiers which are not matched with the pre-associated target identifiers in the third data stream;
s310, judging whether the client sends a high-definition image request to the service platform, and if not, jumping to the step S63;
s320, the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and sends the high-definition shooting requirement of the target identifier to a shooting end;
s330, the shooting end acquires high-definition image information of the target identification and sends the high-definition image information to a service platform;
s340, the service platform receives the high-definition image information containing the target identifier and generates a fourth data stream containing the high-definition image of the target identifier according to the third data stream;
s63, the service platform generates user end output data flow;
s73, the service platform transmits the client-side output data stream to the client that initiated the target association request.
In S13, the service platform 20 receives the first data stream of the shooting end that includes the normal image information of the target scene acquired by each camera of the camera module, and the camera with the zoom mode does not start acquiring the high definition image. The third data stream obtained after the first data stream processing includes the normal image information, and the service platform 20 performs the shielding processing on the data information corresponding to the other target identifiers in the third data stream, which are not matched with the pre-associated target identifier in S33. In S310, the service platform 20 determines whether the client 30 sends a high definition image request to the service platform 20, where the high definition image request includes a target identifier that the high definition image needs to be transmitted. If the service platform 20 does not receive the request of the high definition video, the service platform generates a user-side output data stream according to the data stream after the shielding processing of the third data stream. If the service platform 20 receives a request of a high-definition image sent by the client 30, the service platform 20 parses the high-definition image request, obtains a target identifier with a high-definition image requirement, and sends the high-definition shooting requirement of the target identifier to the shooting end. The high definition shooting requirement comprises an identification of a camera which needs to be shot in a high definition mode in a zooming mode, the camera with the camera identification is controlled by the shooting end to shoot in a long focal length mode, or the high definition shooting requirement comprises a target identification which needs to be shot in a high definition mode, the shooting end calculates and obtains the identification of the camera which corresponds to the target identification and can obtain an image matched with the target identification according to the target identification, and the camera is controlled to shoot in the long focal length mode. And finally, the shooting end sends the acquired high-definition image information containing the target identifier to the service platform 20, the service platform receives the high-definition image information containing the target identifier, the normal image information matched with the target identifier in the third data stream is replaced by the high-definition image information containing the target identifier to generate a fourth data stream, and finally, a user end output data stream is generated and sent to the client 30.
It should be noted that, although the embodiment of the present invention is described by taking a hospital intensive care unit as a target scene in an example, the present invention is not limited to the direct broadcast method provided by the present invention only being used in the target scene such as the hospital intensive care unit. The live broadcast method provided by the invention can be used for other scenes needing live broadcast, such as educational training, concerts and the like.
According to the video live broadcast method, the targets in the target scene of video shooting are associated with the corresponding clients, and the data information of at least one non-associated target is shielded, so that the privacy information of the non-associated target in the clients can be effectively protected. Privacy protection is provided while bringing a real-time immersive panoramic video experience to the user.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a live video method, is applied to a live video system, and this live video system includes at least one shooting end, service platform and customer end, and the shooting end includes the module of making a video recording, pickup module and communication module at least, the shooting visual angle of the module of making a video recording is not less than 360 degrees in the horizontal direction, and the module of making a video recording configures to and obtains video image, and pickup module configuration is to obtaining audio data, and shoots the end and can communicate with service platform and be connected, and the customer end configures to receive user's information input, and can communicate with service platform, its characterized in that, the method includes:
s10: at least one shooting end sends a first data stream to a service platform;
s20: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s30: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of target physical information and a carrier identifier of the client;
s40: the service platform analyzes the target association request to obtain a pre-association target identifier, processes a part of the second data stream associated with the target identifier matched with the pre-association target identifier to obtain a third data stream, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s50: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the third data stream;
s60: the service platform generates output data stream transmission of a user side;
s70: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
2. A live video broadcast method according to claim 1, further comprising, before S40, the following method steps:
s31: the service platform judges the legality of the target association request, executes S40 if the target association request is judged to be legal, and returns to execute S30 if the target association request is judged to be illegal.
3. A live video broadcasting method according to claim 1 or 2, wherein before the service platform generates the output data stream at the user end, the method further comprises:
s51: and the service platform carries out additional information processing on the target corresponding to the target identification matched with the pre-associated target identification in the data stream.
4. A video live broadcast method according to claim 3, further comprising the following method steps after step S70:
s80: the client initiates a user information presentation request to the service platform, the service platform analyzes the user information presentation request to generate user pre-presentation information, and transmits the user pre-presentation information to the shooting end, and the shooting end presents the user pre-presentation information to a target corresponding to a target identifier associated with the client 30.
5. A method for live video, the method comprising:
s11: the method comprises the steps that a service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information and high-definition image information acquired by at least one camera with a zooming mode;
s21: the service platform processes the first data stream to finally obtain a target attribute of the second data stream, wherein the target attribute of the second data stream at least comprises target physical information and a target identifier;
s31: a service platform receives a target association request of a client, wherein the target association request at least comprises one item of carrier identification of target physical information of the client;
s41: the service platform analyzes the target association request to obtain a pre-association target identifier, and associates the client initiating the target association request with the target identifier matched with the pre-association target identifier in the third data stream;
s100: judging whether the client sends a high-definition image request to the service platform, if so, jumping to S110, and if not, jumping to S120;
s110: the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and generates a fourth data stream of the high-definition image containing the target identifier;
s120: the service platform removes high-definition image information from the third data stream to generate a fourth data stream;
s52: the service platform shields data information corresponding to other target identifications unmatched with the pre-associated target identification in the fourth data stream;
s61: the service platform generates output data stream transmission of a user side;
s71: and the service platform transmits the output data stream of the user side to the client side which initiates the target association request.
6. A method for live video, the method comprising:
s13: the service platform receives a first data stream of a shooting end, wherein the first data stream comprises normal image information acquired by a shooting module;
s23, the service platform processes the first data flow to obtain at least one target mark;
s33, the service platform receives a target association request of the client, wherein the target association request at least comprises a pre-association target identifier and a carrier identifier of the client;
s43, the service platform analyzes the target association request to obtain the pre-association target mark, and associates the client initiating the target association request with the target mark matched with the pre-association target mark in the third data stream;
s53, the service platform shields the data information corresponding to other target identifiers which are not matched with the pre-associated target identifiers in the third data stream;
s310, judging whether the client sends a high-definition image request to the service platform, and if not, jumping to the step S63;
s320, the service platform analyzes the high-definition image request, obtains a target identifier with a high-definition image requirement, and sends the high-definition shooting requirement of the target identifier to a shooting end;
s330, the shooting end acquires high-definition image information of the target identification and sends the high-definition image information to a service platform;
s340, the service platform receives the high-definition image information containing the target identifier and generates a fourth data stream containing the high-definition image of the target identifier according to the third data stream;
s63, the service platform generates user end output data flow;
s73, the service platform transmits the client-side output data stream to the client that initiated the target association request.
7. The utility model provides a live video system, includes shooting end, service platform and customer end, shoots the end and includes camera module, pickup die set and communication module, the camera module includes at least one camera, and the camera module configuration is for obtaining video image, and the pickup die set configuration is for obtaining audio data, and shoots end and service platform communicative connection, and the customer end configuration is for receiving user's information input, and with service platform communicative connection, its characterized in that, the focus of the formation of image group of at least one camera in the camera module sets up to the mode of can zooming.
8. The system of claim 7, further comprising a gesture voice conversion module for converting voice and/or text information into gesture operations and converting gesture operations into voice and/or text information.
9. The system according to claim 7 or 8, characterized in that the system further comprises a Braille voice conversion module for converting the voice and/or text information into Braille and converting the Braille into the voice and/or text information.
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| CN110392281A (en) * | 2018-04-20 | 2019-10-29 | 腾讯科技（深圳）有限公司 | Image synthesizing method, device, computer equipment and storage medium |
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