WO2019010626A1 - 拍摄方法和终端 - Google Patents

拍摄方法和终端 Download PDF

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Publication number
WO2019010626A1
WO2019010626A1 PCT/CN2017/092464 CN2017092464W WO2019010626A1 WO 2019010626 A1 WO2019010626 A1 WO 2019010626A1 CN 2017092464 W CN2017092464 W CN 2017092464W WO 2019010626 A1 WO2019010626 A1 WO 2019010626A1
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WO
WIPO (PCT)
Prior art keywords
camera
terminal
duration
camera device
transmission duration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/092464
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English (en)
French (fr)
Inventor
邓伍华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to PCT/CN2017/092464 priority Critical patent/WO2019010626A1/zh
Priority to CN201780053622.2A priority patent/CN109644240A/zh
Publication of WO2019010626A1 publication Critical patent/WO2019010626A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene

Definitions

  • the present application relates to the field of three-dimensional display technologies, and in particular, to a photographing method and a terminal.
  • a terminal can present a three-dimensional image to a user by processing the captured image.
  • the terminal can use the dual camera to separately shoot the same target.
  • the terminal uses the self-configured camera and the external camera to shoot the same target. Since the two cameras are at different angles when shooting, the same target is captured. There are subtle differences in the images.
  • the images captured by the dual camera are combined into one image, the stereoscopic effect of the object can be displayed, and a three-dimensional image is generated.
  • each frame of the video captured by the camera and the external camera of the terminal is combined into a three-dimensional image to form a three-dimensional video. Since the shooting time of the two cameras may not be synchronized, the generated three-dimensional image or three-dimensional video may be distorted, which affects the user's experience of using the external camera.
  • the embodiment of the present application provides a photographing method and a terminal.
  • the ability to control the built-in camera to synchronize with the external camera capture can enhance the display of the composite 3D image.
  • an embodiment of the present application provides a shooting method, where the method includes:
  • the terminal determines a one-way transmission duration when the camera device transmits an instruction to the external camera, wherein the camera configured in the terminal is a first camera, and the camera configured in the external camera device is a second camera;
  • the terminal When receiving the shooting instruction, the terminal determines a starting shooting time of the first camera and/or the second camera according to the one-way transmission duration to control the first camera and the second camera Start shooting at the same time;
  • the terminal generates a three-dimensional image according to an image captured by the first camera and an image captured by the second camera.
  • the embodiment of the present application provides a terminal, where the terminal has a function of realizing the behavior of the user terminal in the actual method, and the function may be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • an embodiment of the present application provides a terminal, where the terminal includes a processor and a memory, and a computer program stored on the memory for the processor to call and execute, the processor being capable of calling the A computer program to perform any of the methods of the first aspect.
  • an embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the methods described in the above aspects.
  • the terminal may determine a one-way transmission duration when the camera device transmits an instruction to the external camera, and may determine the start of the first camera and/or the second camera according to the one-way transmission duration when receiving the shooting instruction.
  • the shooting time is started to control the first camera and the second camera to start shooting at the same time, and the terminal generates a three-dimensional image according to the image captured by the first camera and the image captured by the second camera. According to the above manner, the shooting time of the built-in camera of the terminal and the external camera can be synchronized, and a three-dimensional image or a three-dimensional video with better effects can be obtained, thereby improving the viewing experience of the user.
  • FIG. 1 is a schematic flow chart of a photographing method provided by an embodiment of the present application.
  • FIG. 2 is a schematic flow chart of another shooting method provided by an embodiment of the present application.
  • FIG. 3 is a processing timing diagram of a terminal and an external camera device according to an embodiment of the present application.
  • FIG. 4 is a schematic flow chart of still another shooting method provided by an embodiment of the present application.
  • FIG. 5 is a processing timing diagram of another terminal and an external camera device according to an embodiment of the present application.
  • FIG. 6 is a schematic flow chart of still another shooting method provided by an embodiment of the present application.
  • FIG. 7 is a processing timing diagram of still another terminal and an external camera device according to an embodiment of the present application.
  • FIG. 8 is a block diagram of a unit composition of a terminal according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • an embodiment of a method provided by an embodiment of the present application is introduced.
  • the method embodiment is applied to a terminal configured with a camera capable of performing photographing or photographing, and the terminal can also support an external camera, for example, connecting an external camera through a USB interface, and at the same time, the terminal can store the built-in camera and the external camera according to the built-in camera.
  • the captured image is a computer readable program that synthesizes a three-dimensional image.
  • Terminals that satisfy the above conditions may include a mobile phone, a computer with a mobile terminal, a portable, pocket-sized, handheld, mobile device built into a computer, a smart wearable device, and the like.
  • PDA personal digital assistant
  • tablet computer netbook computer
  • portable computer media viewer
  • smart watch smart helmet
  • smart glasses smart bracelet and other smart wearable devices.
  • at least other devices that compute processors and data storage devices are examples of processors and data storage devices.
  • FIG. 1 is a schematic flowchart diagram of a photographing method according to an embodiment of the present application. As shown in FIG. 1, the method includes at least the following steps.
  • Step S101 The terminal determines a one-way transmission duration when the camera device transmits an instruction to the external camera, wherein the camera configured in the terminal is the first camera, and the camera configured in the external camera device is the second camera.
  • the terminal may be connected to the external camera device through a communication interface such as a USB interface, or may be connected to the external camera device.
  • a communication interface such as a USB interface
  • the embodiment of the present application is not specifically limited.
  • the embodiment of the present application defines that the camera built in the terminal is the first camera, the external camera is the second camera, and the terminal is used to control the first camera to perform shooting, and the external camera device can control the second camera to perform shooting.
  • the terminal can confirm the transmission time of the terminal to the camera device to send an instruction, so that the terminal and the external camera device can synchronously control the respective cameras for shooting.
  • an implementation manner may be as follows.
  • the terminal may send the first instruction to the external camera device, and record the sending moment of sending the first instruction, and the external camera device sends a response to the first instruction to the terminal after receiving the first instruction.
  • the terminal receives the response, it can record the reception time at which the response is received.
  • the terminal determines the bidirectional transmission duration of the command communication between the terminal and the external camera device according to the length of time between the transmission time and the reception time.
  • the terminal may determine the one-way transmission duration of the terminal to the external camera device according to the two-way transmission duration determined by the transmission time and the reception time.
  • the manner in which the terminal determines the unidirectional transmission duration may be determined based on a preset mapping relationship between the unidirectional transmission duration and the bidirectional transmission duration, or the terminal may be based on the current running state of the terminal, and the current running state of the external camera device.
  • the configuration information of the terminal or external camera device is determined. For example, if the current running state of the terminal is the same as the current running state of the external camera device, and the running state is busy or the running state is idle, the terminal can be considered to have the same running speed as the external camera device, and the terminal can determine that the one-way transmission duration is two-way.
  • the ratio of the two-way transmission duration of the one-way transmission duration can be determined according to the ratio of the operating speed of the terminal and the external camera device to calculate the one-way transmission. duration. For example, if the terminal knows that the configuration information of the terminal and the external camera device is the same, it indicates that the terminal and the external camera device operate at the same speed, and the terminal can determine that the one-way transmission duration is half of the two-way transmission duration; or, the terminal and the external camera device If the configuration is different, the proportion of the one-way transmission duration can be determined according to the configuration information. Alternatively, the one-way transmission duration may be determined in conjunction with the above operational status and configuration information. The embodiments of the present application are not limited herein.
  • the terminal may determine the one-way transmission duration by using other methods.
  • the foregoing implementation manner is only exemplary.
  • the manner in which the unidirectional transmission duration is determined is not specifically limited.
  • Step S102 when receiving the shooting instruction, the terminal determines the initial shooting time of the first camera and/or the second camera according to the one-way transmission duration to control the first camera and the camera.
  • the second camera starts shooting at the same time.
  • the terminal may transmit the shooting instruction to the terminal.
  • the terminal can receive the user's shooting instruction through the input device, and lose
  • the input device may be a touch screen configured by a terminal, a touch display screen, a recording device, a physical button, or the like.
  • the input device can convert the user's shooting operation into a shooting instruction and send the shooting instruction to the terminal.
  • the terminal may determine the initial shooting time of the first camera and/or the second camera according to the one-way transmission duration, so that the first camera and the second camera can achieve synchronous shooting. For specific implementations of this step, reference may be made to the specific description in the method embodiments below.
  • the terminal when receiving the end shooting instruction, may further determine the end shooting time of the first camera and/or the second camera according to the one-way transmission duration.
  • Step S103 the terminal generates a three-dimensional image according to the image captured by the first camera and the image captured by the second camera.
  • an image or video may be captured, and the captured image or video may be transmitted to the terminal, and the second camera is photographed. Images or videos can be transferred to the terminal via an external camera device. If the first camera and the second camera capture a video, the terminal can process each frame of the video separately. The terminal can receive the image or video from the first camera and the second camera in real time, or the terminal can receive the image or video after the first camera and the second camera are finished. The terminal can process the received image or video in real time, or the terminal can perform unified processing on the received image or video after the receiving is completed.
  • the terminal combines the received first image captured by the first camera with the second image captured by the second camera into a three-dimensional image, and may synthesize The 3D image is sent to the display on the terminal for display to the user. If the first camera and the second camera capture a video, the terminal determines, according to the frame serial number of each frame image, a matching relationship between each frame image captured by the first camera and each frame image captured by the second camera, and the first camera is The two images that are matched with the second camera are combined and processed into a three-dimensional image.
  • the terminal may determine a one-way transmission duration when the camera device transmits an instruction to the external camera, and may determine the start of the first camera and/or the second camera according to the one-way transmission duration when receiving the shooting instruction.
  • the shooting time is started to control the first camera and the second camera to start shooting at the same time, and the terminal generates a three-dimensional image according to the image captured by the first camera and the image captured by the second camera. According to the above manner, the shooting time of the built-in camera of the terminal and the external camera can be synchronized, and a three-dimensional image or a three-dimensional video with better effects can be obtained, thereby improving the viewing experience of the user.
  • FIG. 2 is a schematic flowchart diagram of another shooting method provided by an embodiment of the present application. As shown in FIG. 2, the method includes the following steps.
  • step S201 the terminal sends a first instruction to the camera device at time t1 and records a time t1, wherein the first instruction carries the time t1.
  • Step S202 After receiving the first instruction, the external camera device updates the current time of the external camera device to time t1, and the external camera device sends a response to the first command to the terminal.
  • Step S203 When receiving the response to the first instruction, the terminal records that the receiving time of receiving the response is time t2.
  • Step S204 The terminal determines, according to the time t1 and the time t2, that the two-way transmission duration is the difference between the time t2 and the time t1, and determines the one-way transmission duration of the terminal to the external camera device according to the two-way transmission duration.
  • the embodiment of the present application first needs to synchronize the current time of the terminal and the external camera device. Specifically, the terminal sends a first instruction to the camera device at time t1, and records the time t1 as the time at which the first instruction is sent. The first command can carry the time t1.
  • the time t1 determined by the first process may be the time after the time when the terminal is currently located, and when the terminal generates the first instruction, the terminal adds the time t1 to the first instruction, and sends the first instruction at the time t1, and the external camera
  • the device may feed back the response of the first instruction to the terminal in real time, to indicate that the external camera device has received the first instruction; and at the same time, the external camera device can parse the first instruction
  • the clock crystal corresponding to the external camera device is adjusted, that is, the clock crystal oscillator configured in the external camera device, and the current moment of the external camera device is adjusted to the time t1, because the terminal transmits the first instruction to the external camera device.
  • the time at which the terminal is currently located is the time after the transmission time is long at the time t1.
  • the terminal When the terminal receives the response to the first command sent by the external camera device, the terminal records the receiving time as the time t2.
  • the terminal may further determine, according to the time t1 and the time t2, the duration of the response from the first command to the receiving of the first command, that is, the length of the two-way transmission between the terminal and the external camera device, and according to the two-way The length of transmission determines the one-way transmission duration.
  • the terminal determines the unidirectional transmission duration refer to the related description in the embodiment shown in FIG. 1 , and details are not described herein again.
  • Step S205 The terminal sends the one-way transmission duration to the external camera device.
  • Step S206 the external camera device corrects the current moment of the external camera device according to the one-way transmission duration.
  • the terminal may send the one-way transmission duration to the external camera device.
  • the external camera device corrects the current time, and the corrected current time is the sum of the time before the correction and the one-way transmission duration. At this point, the terminal and the external camera device achieve the time synchronization.
  • Step S207 When the terminal receives the shooting instruction, the terminal determines that the time when the first camera starts shooting is time t3, and the terminal sends the time t3 to the external camera device.
  • step S208 the terminal controls the first camera to start shooting at time t3, and at the same time, the external camera device controls the second camera to start shooting at time t3.
  • the terminal when receiving the shooting instruction, may determine that the time when the first camera starts shooting is time t3, where time t3 is one after the current time of the terminal.
  • the time between the time t3 and the current time may be preset, that is, the time t3 is determined according to the preset delay length.
  • the preset duration needs to be longer than the one-way transmission duration of the terminal connected to the camera device. Since the external camera device is synchronized with the time of the terminal, the external camera device can control the second camera to start shooting at time t3 when receiving the time t3, and the terminal controls the third camera to start shooting at time t3. Therefore, in the above manner, the first camera and the second camera can be synchronized, and the first camera and the second camera can simultaneously capture the matched images to generate a three-dimensional image that is not distorted.
  • FIG. 3 is a diagram showing the processing timing relationship between the terminal and the external camera device.
  • the starting time of the terminal is time 1000
  • the starting time of the external camera device is time 2000.
  • the terminal determines to send the first instruction to the external camera device at time 1010, wherein the first command includes information at time 1010, and at the same time, the time at which the external camera device is located is 2010.
  • the external camera device receives the first command at time 2020, and the external camera device parses the time 1010 carried in the first command, and the external camera device will be at the time 2020.
  • the conversion is to time 1010, and the external camera device transmits a response to the first command to the terminal at time 2020.
  • the terminal receives the response at time 1030, that is, the terminal determines to send the first indication at time 1010, and receives a response to the first indication at time 1030, the terminal may It is calculated that the unidirectional transmission duration of the terminal connected to the camera device is 10, and the unidirectional transmission duration that the terminal may calculate according to different calculation methods has an error, and the calculated error does not affect the synchronization between the terminal and the external camera device.
  • the terminal determines that the one-way transmission time of the terminal to the external camera device is 10
  • the terminal sends the one-way transmission time to the external camera device at time 1040
  • the external camera device receives the message sent by the terminal at the time 1040, and According to the one-way transmission duration, the current time is converted from time 1040 to 1050, and the terminal is synchronized with the external camera device.
  • the terminal receives the shooting instruction at time 2000
  • the terminal determines that the shooting time of the first camera is 2020, wherein the determined shooting time needs to be greater than the one-way transmission time of the terminal to the external camera device, and the terminal may determine the shooting time. It is transmitted to the external camera device at time 2000, and the external camera device receives the shooting time at time 2010.
  • the terminal controls the first camera to perform shooting, and the external camera device controls the second camera to perform shooting, so that the first camera and the second camera perform synchronous shooting.
  • the foregoing time is only exemplary, and the time unit corresponding to the time axis is not specifically limited in this embodiment of the present application.
  • FIG. 4 is a schematic flowchart diagram of still another shooting method according to an embodiment of the present application. As shown in FIG. 4, the method includes the following steps.
  • Step S401 the terminal determines a one-way transmission duration when the camera device transmits an instruction to the external device.
  • Step S402 when receiving the shooting instruction, the terminal determines that the shooting delay length of the first camera is the first duration, and the terminal sends the first duration and the one-way transmission duration to the external camera device.
  • Step S403 the external camera device determines the second camera according to the first duration and the one-way transmission duration.
  • the length of the shooting delay of the head is the second duration, wherein the second duration is the difference between the first duration and the one-way transmission duration.
  • Step S404 after the first time period, the terminal controls the first camera to start shooting; after the second camera time, the external camera device controls the second camera to start shooting.
  • the implementation manner of step S401 can be referred to the foregoing embodiment.
  • the terminal and the external camera device can be synchronized with each other, and the time is not synchronized.
  • the embodiment of the present application is not specifically limited.
  • the terminal may determine that the shooting delay length of the first camera is the first duration, wherein the first duration needs to be greater than the one-way transmission duration.
  • the terminal may start timing based on the first duration, and at the same time, the terminal sends the determined first duration and the one-way transmission duration to the external camera device, so that the external camera device determines the shooting delay length of the second camera.
  • the external camera device when the external camera device receives the above information and has passed a one-way transmission duration, the external camera device needs to determine that the second duration is the first duration minus the one-way transmission duration, and the external camera device can start based on the second duration. Timing. When the terminal is full when the first time is long, the first camera is controlled to start shooting; when the external camera device is full when the first time is long, the second camera is controlled to start shooting, so that the first camera and the second camera are synchronized.
  • the terminal may further calculate the shooting moment of the first camera according to the first duration, and the external camera device may calculate the shooting moment of the second camera according to the second duration, and at the corresponding shooting moment, the terminal controls the first camera to perform shooting;
  • the external camera device controls the second camera to shoot.
  • the starting time of the terminal and the external camera device is different, the starting time of the terminal is time 1000, and the starting time of the external camera device is time 2000.
  • the time of the terminal and the external camera device can be synchronized in the manner shown in FIG. 3 .
  • the reference time of the terminal is not synchronized with the reference time of the external camera device.
  • the terminal sends a first command to the camera device at its reference time 1010, and the external camera device receives the first command at its reference time 2020, and sends a response to the first command to the terminal at time 2020.
  • the time of receipt 1030 receives a response.
  • the terminal may determine that the first instruction is sent at time 1010, and the response to the first instruction is sent at time 1030, and the terminal may calculate that the unidirectional transmission duration of the terminal to the external camera device is 10.
  • the terminal receives the shooting instruction at its reference time 2000, the time at which the external camera device reference is taken is time 3000.
  • the terminal determines that the shooting delay length of the first camera is 20, and the terminal transmits the determined shooting delay length 20 and the one-way transmission duration 10 to the external camera device once, and the external camera device receives the above information at the reference time 3010.
  • the terminal can also send the unidirectional transmission duration to the external camera device at any time before the unidirectional transmission duration is calculated, which is not specifically limited in this embodiment.
  • the external camera device When the external camera device receives the above information at time 3010, it can calculate that the shooting delay length of the second camera is 10, and then determine that the shooting time of the second camera is time 3020. At the time 2020 of the terminal, the terminal controls the first camera to start shooting; at the time 3020 of the external camera device, the external camera device controls the second camera to start shooting. In the above manner, the transmission overhead of the terminal and the external camera device can be reduced, and the reference time of the terminal and the external camera device can be synchronously calibrated to realize the first camera and the first camera. Two cameras simultaneously shooting.
  • FIG. 6 is a schematic flowchart diagram of still another shooting method according to an embodiment of the present application. As shown in Figure 6, the method includes the following steps.
  • Step S601 The terminal determines a one-way transmission duration when an external camera device transmits an instruction.
  • Step S602 when the terminal receives the shooting instruction, the terminal determines that the delay length of the second camera is a third duration, and sends the third duration to the external camera device.
  • Step S603 the terminal determines, according to the third duration and the one-way transmission duration, that the shooting delay length of the first camera is a fourth duration, wherein the fourth duration is the third duration and the The sum of the one-way transmission durations.
  • Step S604 after the fourth time period, the terminal controls the first camera to start shooting; after the third camera time, the external camera device controls the second camera to start shooting.
  • the implementation manner of step S601 can be referred to the foregoing embodiment.
  • the terminal may first determine that the shooting delay length of the second camera is the third duration, and the terminal may send the third duration to the external camera device after determining the third duration; meanwhile, the terminal may also According to the third duration and the one-way transmission duration, it is determined that the shooting delay length of the first camera is the fourth duration, and the fourth duration is the sum of the third duration and the one-way transmission duration.
  • the embodiment of the present application does not require that the third duration is greater than the one-way transmission duration.
  • the terminal may start timing based on the calculated fourth duration, and when the external camera device receives the third duration, the terminal may start timing based on the third duration, and when the terminal is full of the fourth duration, control the first camera to start shooting; When the external camera device is full when the third time is long, the second camera is controlled to start shooting, so that the first camera and the second camera are synchronized.
  • the terminal may further calculate the shooting moment of the first camera according to the fourth duration, and the external camera device may calculate the shooting moment of the second camera according to the third duration, and at the corresponding shooting moment, the terminal controls the first camera to perform shooting; The external camera device controls the second camera to shoot.
  • the starting time of the terminal and the external camera device is different, the starting time of the terminal is time 1000, and the starting time of the external camera device is time 2000.
  • the time of the terminal and the external camera device can be synchronized in the manner shown in FIG. 3 .
  • the reference time of the terminal is not synchronized with the reference time of the external camera device.
  • the terminal sends a first command to the camera device at its reference time 1010, and the external camera device receives the first command at its reference time 2020, and sends a response to the first command to the terminal at time 2020.
  • the time of receipt 1030 receives a response.
  • the terminal may determine that the first instruction is sent at time 1010, and the response to the first instruction is sent at time 1030, and the terminal may calculate that the unidirectional transmission duration of the terminal to the external camera device is 10.
  • the time at which the external camera device reference is taken is time 3000.
  • the terminal determines that the shooting delay length of the second camera is 10, and the terminal sends the determined shooting delay length 10 of the second camera to the external camera device, and the external camera device receives the above information at the reference time 3010.
  • the terminal transmits the second camera's shooting delay length 10 to the external camera device at the time of the benchmark reference 2000, the terminal can calculate the first camera shooting.
  • the delay time is 20.
  • the terminal controls the first camera to start shooting; at the time 3020 of the external camera device, the external camera device controls the second camera to start shooting.
  • the transmission overhead of the terminal and the external camera device can be reduced, and the reference time of the terminal and the external camera device can be synchronously calibrated to achieve synchronous shooting of the first camera and the second camera.
  • another implementation manner is that the terminal simultaneously determines the shooting delay length of the first camera and the shooting delay length of the second camera, wherein the shooting delay length of the second camera is the shooting delay length of the first camera. The difference from the one-way transmission duration.
  • the terminal can send the shooting delay length of the second camera to the external camera device while determining the length of the shooting delay of the second camera. The shooting is started in synchronization with the first camera and the second camera.
  • FIG. 8 is a block diagram of a unit composition of a terminal according to an embodiment of the present application.
  • the terminal includes an input unit 801801, a processing unit 802, and an output unit 803803.
  • the processing unit 802 is configured to determine a one-way transmission duration when the camera device transmits an instruction to the external camera, where the camera configured in the terminal is the first camera, and the camera configured in the external camera device is the second camera. camera;
  • the processing unit 802 is further configured to: when receiving the shooting instruction by the input unit 801, determine a starting shooting time of the first camera and/or the second camera according to the one-way transmission duration, Controlling that the first camera and the second camera start shooting simultaneously;
  • the processing unit 802 is further configured to generate a three-dimensional image according to the image captured by the first camera and the image captured by the second camera.
  • processing unit 802 is further configured to:
  • the first instruction carries the sending moment to control the external camera device to update the current moment to the sending moment
  • the processing unit 802 is further configured to:
  • processing unit 802 is further configured to:
  • processing unit 802 is further configured to:
  • the output unit 803 is configured to simultaneously send the first duration and the one-way transmission duration to the external camera device, where the external camera device is configured to determine, according to the first duration and the one-way transmission duration
  • the shooting delay length of the second camera is a second duration, wherein the second duration is a difference between the first duration and the one-way transmission duration.
  • processing unit 802 is further configured to:
  • Determining a shooting delay length of the first camera is a fourth duration, wherein the fourth duration is a sum of the third duration and the one-way transmission duration.
  • processing unit 802 is further configured to:
  • Calculating a unidirectional transmission duration of the terminal to the external camera device is half of the two-way transmission duration.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the terminal includes an input and output device 901, a processor 902, a memory 903, and a communication interface 904.
  • Input output device 901, processor 902, memory 903, and communication interface 904 can be coupled via a communication bus.
  • the input/output device 901 may include a device having an input function, such as a camera, a recording device, etc., a touch screen and various sensors for sensing the environment, such as a gyroscope, an acceleration sensor, an infrared sensor, etc., and may also include an output.
  • Functional devices such as display screens, audio devices, and the like.
  • Processor 902 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the above program.
  • the processor 902 is capable of receiving data input by the input device 901 and processing it.
  • the memory 903 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • disc storage device including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • the memory 903 can exist independently and is coupled to the processor 902 via a bus. Memory 903 can also be integrated with processor 902.
  • the memory 903 can store executable instructions, or pre-configured data, and the like. For example, the threshold applied in the method of the embodiment of the present application is performed.
  • the executable instructions for performing the method of the embodiments of the present application may also be stored in the memory 903 for execution by the processor 902.
  • Communication interface 904 can include a wired communication interface, such as a USB communication interface; it can also include a wireless communication interface.
  • processor 902 is configured to invoke the computer instruction to perform the following steps:
  • Determining a one-way transmission duration when the external camera device transmits an instruction wherein the camera configured in the terminal is a first camera, and the camera configured in the external camera device is a second camera;
  • the processor 902 is implemented in the aspect of determining a one-way transmission duration when an external camera device transmits an instruction.
  • the first instruction carries the sending moment to control the external camera device to update the current moment to the sending moment
  • the processor 902 is further configured to invoke the computer instruction to perform the following steps:
  • the implementation of the processor 902 is:
  • the implementation of the processor 902 is:
  • the external camera device is configured to determine the shooting of the second camera according to the first duration and the one-way transmission duration
  • the delay length is a second duration, wherein the second duration is a difference between the first duration and the one-way transmission duration.
  • the processor 902 determines the first camera and/or the second camera according to the one-way transmission duration In terms of the initial shooting time of the head, the processor 902 is implemented as follows:
  • Determining a shooting delay length of the first camera is a fourth duration, wherein the fourth duration is a sum of the third duration and the one-way transmission duration.
  • the processor 902 is implemented by: calculating the unidirectional transmission duration of the terminal to the external camera device according to the bidirectional transmission duration:
  • Calculating a unidirectional transmission duration of the terminal to the external camera device is half of the two-way transmission duration.
  • the foregoing terminal may also implement some or all of the implementations in the foregoing method embodiments, and details are not described herein again.
  • the present invention may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable medium to another computer readable medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example, coaxial cable, fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website, computer, server or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a Solid State Disk (SSD)

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Abstract

本文公开一种拍摄方法和终端。方法包括：终端确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；当接收到拍摄指令时，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；所述终端根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。通过上述方式，能够控制内置摄像头与外接摄像头拍摄同步，从而能够提升合成的三维图像的显示效果。

Description

拍摄方法和终端 技术领域
本申请涉及三维显示技术领域，尤其涉及一种拍摄方法和终端。
背景技术
当前随着三维显示技术的发展，终端能够通过对拍摄到的图像进行处理以生成三维图像呈现给用户。通常终端能够利用双摄像头分别对同一目标物进行拍摄，例如，终端利用自配置的摄像头以及外接摄像头对同一目标物进行拍摄，由于双摄像头在拍摄时所处的角度不同，对同一目标物拍摄到的图像会存在细微差异，将双摄像头拍摄的图像合成为一个图像时，即能够显示出目标物的立体效果，则生成有三维图像。相应的，也可以利用双摄像头生成三维视频。当前生成三维视频的过程中，将终端自配置的摄像头和外接摄像头分别拍摄的视频的相匹配的每帧图像合成为三维图像，进而形成三维视频。由于这两个摄像头拍摄时间有可能不同步，则会导致生成的三维图像或三维视频失真，影响用户对外接摄像头的使用体验。
发明内容
本申请实施例提供了一种拍摄方法和终端。能够控制内置摄像头与外接摄像头拍摄同步，从而能够提升合成的三维图像的显示效果。
第一方面，本申请实施例提供了一种拍摄方法，该方法包括：
终端确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
当接收到拍摄指令时，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
所述终端根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
第二方面，本申请实施例提供了一种终端，该终端具有实现上述方法实际中用户终端行为的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
第三方面，本申请实施例提供了一种终端，该终端包括处理器和存储器，以及存储在所述存储器上可供所述处理器调用并执行的计算机程序，所述处理器能够调用所述计算机程序以执行第一方面的任意一个方法。
第四方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
本申请实施例中，终端可以确定向外接摄像头设备传输指令时的单向传输时长，并可在接收到拍摄指令时，根据单向传输时长确定第一摄像头和/或所述第二摄像头的起始拍摄时间，来控制第一摄像头与第二摄像头同时开始拍摄，终端根据第一摄像头拍摄的图像与第二摄像头拍摄的图像生成三维图像。通过上述方式，能够同步终端的内置摄像头与外接摄像头的拍摄时间，进而能够得到效果较好的三维图像或三维视频，提升了用户的观看体验。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。
图1是本申请实施例提供的一种拍摄方法的流程示意图；
图2是本申请实施例提供的另一种拍摄方法的流程示意图；
图3是本申请实施例提供的一种终端与外接摄像头设备的处理时序关系图；
图4是本申请实施例提供的又一种拍摄方法的流程示意图；
图5是本申请实施例提供的另一种终端与外接摄像头设备的处理时序关系图；
图6是本申请实施例提供的又一种拍摄方法的流程示意图；
图7是本申请实施例提供的又一种终端与外接摄像头设备的处理时序关系图；
图8是本申请实施例提供的一种终端的单元组成框图；
图9是本申请实施例提供的一种终端的结构示意图。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。
首先介绍本申请实施例提供的方法实施例。该方法实施例应用于配置有摄像头能够执行拍照或摄像的终端上，该终端还能够支持外接摄像头，例如，通过USB接口连接外接摄像头，同时，终端中可以存储有能够实现根据内置摄像头与外接摄像头拍摄的图像合成三维图像的相关计算机可读程序。满足上述条件的终端可以包括移动电话，具有移动终端的计算机，便携式、袖珍式、手持式、计算机内置的移动装置，智能穿戴式设备等。例如，个人数字助理(personal digital assistant，PDA)、平板计算机、上网本计算机、便携式计算机、媒体观看器、智能手表、智能头盔、智能眼镜、智能手环等智能穿戴式设备。或至少包括计算处理器和数据存储装置的其他设备。
请参阅图1，图1是本申请实施例提供的一种拍摄方法的流程示意图。如图1所示，该方法至少包括以下步骤。
步骤S101，终端确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头。
在一些可能的实现方式中，终端可以通过USB接口等通信接口与外接摄像头设备进行有线连接，也可以与外接摄像头设备进行无线连接，在此本申请实施例不作具体限定。本申请实施例定义终端内置的摄像头为第一摄像头，外接摄像头为第二摄像头，并且终端用于控制第一摄像头进行拍摄，外接摄像头设备可以控制第二摄像头进行拍摄。
终端确认连接到外接摄像头设备后，终端可以确认终端向外接摄像头设备发送指令的传输时间，以能够实现终端与外接摄像头设备同步控制各自的摄像头进行拍摄。可选的，终端确认需要向外接摄像头设备发送指令的传输时间时，一种实现方式可以如下所述。
终端可以向外接摄像头设备发送第一指令，并记录发送该第一指令的发送时刻，外接摄像头设备在接收到该第一指令后，会向终端发送针对该第一指令的响应。终端在接收到该响应时，可以记录下接收到该响应的接收时刻。终端根据发送时刻与接收时刻之间的时长，确定了终端与外接摄像头设备进行指令通信的双向传输时长。在此，终端可以根据由发送时刻与接收时刻确定的双向传输时长，来确定终端至外接摄像头设备的单向传输时长。其中，终端确定单向传输时长的方式可以是基于预设的单向传输时长与双向传输时长的映射关系来确定的，也可以是终端基于终端当前的运行状态，外接摄像头设备当前的运行状态，终端或外接摄像头设备的配置信息确定的。例如，终端当前的运行状态与外接摄像头设备当前的运行状态相同，运行状态忙或运行状态空闲等，则可以认为终端与外接摄像头设备当前的运行速度相同，则终端可以确定单向传输时长为双向传输时长的一半，或者，终端与外接摄像头设备的运行速度不同，则可以根据终端与外接摄像头设备的运行速度的比例来确定单向传输时长所占双向传输时长的比例，来计算出单向传输时长。又例如，终端获知终端与外接摄像头设备的配置信息相同，则表明终端与外接摄像头设备的运行速度相同，则终端可以确定单向传输时长为双向传输时长的一半；或者，终端与外接摄像头设备的配置不同，则可以根据配置信息确定单向传输时长的占比等等。又或者，可以结合上述运行状态与配置信息来确定单向传输时长。在此，本申请实施例不作限定。
当然，终端还可以通过其他方式来确定单向传输时长，上述实现方式仅为示例性的，在此本申请实施例对确定单向传输时长的方式不作具体限定。
步骤S102，当接收到拍摄指令时，所述终端根据所述单向传输时长分别确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄。
在一些可能的实现方式中，当用户向终端输入拍摄指令时，终端可以将拍摄指令传输至终端。具体的，终端可以通过输入装置接收用户的拍摄指令，输 入装置可以是终端配置的触摸屏、触控显示屏、录音装置、物理按键等。输入装置可以将用户的拍摄操作转换为拍摄指令并将拍摄指令发送至终端。终端在接收到拍摄指令时，可以根据单向传输时长分别确定第一摄像头和/或第二摄像头的起始拍摄时间，以使第一摄像头与第二摄像头能够实现同步拍摄。对于本步骤的具体实现方式可以参见下述方法实施例中的具体描述。
可选的，当接收到结束拍摄指令时，终端还可以根据单向传输时长分别确定第一摄像头和/或第二摄像头的终止拍摄时间。
步骤S103，所述终端根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
在一些可能的实现方式中，当第一摄像头与第二摄像头在确定的起始拍摄时间开始拍摄时，可以拍摄图像或视频，并可以将拍摄的图像或视频传输至终端，第二摄像头拍摄的图像或视频可以通过外接摄像头设备传输至终端。如果第一摄像头与第二摄像头拍摄的为视频，终端可以分别处理视频中的每帧图像。其中，终端可以实时接收来自第一摄像头与来自第二摄像头的图像或视频，或者，终端可以接收第一摄像头与第二摄像头拍摄结束后的图像或视频。终端可以对接收到的图像或视频进行实时处理，或者，终端也可以在接收完成后对接收到的图像或视频进行统一处理。
具体的，如果第一摄像头与第二摄像头拍摄的为图像，则终端将接收到的第一摄像头拍摄的第一图像与第二摄像头拍摄的第二图像进行合成处理为三维图像，并可以将合成的三维图像发送至终端的显示屏上显示给用户。如果第一摄像头与第二摄像头拍摄的为视频，终端根据每帧图像的帧序列号，确定第一摄像头拍摄的每帧图像与第二摄像头拍摄的每帧图像的匹配关系，并将第一摄像头与第二摄像头拍摄的匹配的两个图像合成处理为三维图像。
本申请实施例中，终端可以确定向外接摄像头设备传输指令时的单向传输时长，并可在接收到拍摄指令时，根据单向传输时长确定第一摄像头和/或所述第二摄像头的起始拍摄时间，来控制第一摄像头与第二摄像头同时开始拍摄，终端根据第一摄像头拍摄的图像与第二摄像头拍摄的图像生成三维图像。通过上述方式，能够同步终端的内置摄像头与外接摄像头的拍摄时间，进而能够得到效果较好的三维图像或三维视频，提升了用户的观看体验。
通过下面的方法实施例来具体描述终端控制第一摄像头与第二摄像头同步拍摄的方式。
请参阅图2，图2是本申请实施例提供的另一种拍摄方法的流程示意图。如图2所示，该方法包括以下步骤。
步骤S201，终端在时刻t1向外接摄像头设备发送第一指令并记录时刻t1，其中，第一指令中携带有该时刻t1。
步骤S202，外接摄像头设备接收到第一指令后，将外接摄像头设备当前所处的时间更新为时刻t1，同时，外接摄像头设备向终端发送针对第一指令的响应。
步骤S203，终端接收到所述针对第一指令的响应时，记录接收到所述响应的接收时刻为时刻t2。
步骤S204，终端根据时刻t1与时刻t2，确定双向传输时长为时刻t2与时刻t1的差值，并根据双向传输时长确定终端向外接摄像头设备的单向传输时长。
在一些可能的实现方式中，由于外接摄像头设备所配置的时钟晶振与终端所配置的时钟晶振不一定同步，则有可能导致终端与外接摄像头设备所处的时间不同步。在此，本申请实施例首先需要对终端与外接摄像头设备当前所处时间进行同步。具体的，终端在时刻t1向外接摄像头设备发送第一指令，并记录时刻t1为发送第一指令的时刻。第一指令中可以携带有时刻t1。例如，第一处理确定的时刻t1可以是终端当前所处时刻之后的时刻，终端在生成第一指令时，将时刻t1添加至第一指令中，并在时刻t1发送该第一指令，外接摄像头设备在接收到该第一指令时，可以实时向终端反馈该第一指令的响应，用于表明外接摄像头设备已接收到该第一指令；同时，外接摄像头设备可以解析出第一指令中携带的时刻t1，并调整外接摄像头设备对应的时钟晶振，即外接摄像头设备中配置的时钟晶振，将外接摄像头设备当前所处的时刻调整为时刻t1，由于终端向外接摄像头设备传输第一指令的过程中存在耗时，即当外接摄像头设备将当前时刻调整为时刻t1的同时，终端当前所处的时刻为时刻t1经过传输时长后的时刻。
终端在接收到外接摄像头设备发送的针对第一指令的响应时，终端记录接收时刻为时刻t2。
终端可以进一步地根据时刻t1及时刻t2，确定终端从发送第一指令到接收到针对该第一指令的响应时长，即能够确定出终端与外接摄像头设备之间的双向传输时长，并能够根据双向传输时长，确定单向传输时长。其中，终端确定单向传输时长的方式可以参见图1所示实施例中的相关描述，在此不再赘述。
步骤S205，终端将单向传输时长发送给外接摄像头设备。
步骤S206，外接摄像头设备根据单向传输时长修正外接摄像头设备当前所处时刻。
在一些可能的实现方式中，终端在确定出单向传输时长后，可以将单向传输时长发送给外接摄像头设备。外接摄像头设备修正当前所处时刻，修正后的当前所处时刻为修正前所处时刻与单向传输时长之和。至此，终端与外接摄像头设备实现了所处时间同步。
步骤S207，当终端接收到拍摄指令时，终端确定第一摄像头在开始拍摄的时刻为时刻t3，同时，终端将时刻t3发送给外接摄像头设备。
步骤S208，终端控制第一摄像头在时刻t3开始拍摄，同时，外接摄像头设备控制第二摄像头在时刻t3开始拍摄。
在一些可能的实现方式中，终端在接收到拍摄指令时，可以确定第一摄像头在开始拍摄的时刻为时刻t3，其中时刻t3为终端当前所处时刻之后的一 个时刻，时刻t3与当前时刻之间的时长可以是预设置的，即根据预设延时长度确定时刻t3。其中，该预设时长需要大于终端向外接摄像头设备的单向传输时长。由于外接摄像头设备与终端所处时刻同步，外接摄像头设备在接收到时刻t3时，可以在时刻t3控制第二摄像头开始拍摄，同时，终端在时刻t3控制第三摄像头开始拍摄。从而，通过上述方式，能够实现第一摄像头与第二摄像头拍摄同步，进而第一摄像头与第二摄像头能够同步拍摄相匹配的图像，以生成不失真的三维图像。
下面结合图3来说明终端与外接摄像头设备时刻同步的方式。图3中示出了终端与外接摄像头设备的处理时序关系图。如图3所示，当终端与外接摄像头连接成功后，即终端与外接摄像头设备能够实现通信交互时，终端的起始时刻为时刻1000，外接摄像头设备的起始时刻为时刻2000。终端确定在时刻1010向外接摄像头设备发送第一指令，其中，第一指令中包括时刻1010的信息，同时，外接摄像头设备所处时刻为2010。假设终端向外接摄像头设备单项传输的时长为10，则外接摄像头设备在时刻2020接收到该第一指令，外接摄像头设备解析出第一指令中携带的时刻1010，则外接摄像头设备将所处时刻2020转换为时刻1010，并且外接摄像头设备在时刻2020向终端发送第一指令的响应。假设外接摄像头设备向终端单向传输时长为10，则终端在时刻1030接收到该响应，即终端确定在时刻1010发送第一指示，并在时刻1030接收到针对该第一指示的响应，终端可以计算出终端向外接摄像头设备的单向传输时长为10，终端根据不同的计算方式可能计算出的单向传输时长存在误差，计算出的误差并不影响终端与外接摄像头设备进行同步。当终端确定终端向外接摄像头设备的单向传输时长为10时，终端在时刻1040向外接摄像头设备发送单向传输时长为10，外接摄像头设备在所处的时刻1040接收到终端发送的消息，并根据单向传输时长将当前所处时刻由时刻1040转换为1050，至此，终端与外接摄像头设备实现同步。当终端在时刻2000时接收到拍摄指令时，终端确定第一摄像头的拍摄时刻为2020，其中，确定的拍摄时刻需要大于终端向外接摄像头设备的单向传输时长，终端可以将确定出的拍摄时刻在时刻2000时传输给外接摄像头设备，外接摄像头设备在时刻2010时接收到拍摄时刻。则在拍摄时刻2020，终端控制第一摄像头进行拍摄，外接摄像头设备控制第二摄像头进行拍摄，以实现第一摄像头与第二摄像头进行同步拍摄。需要说明的是，上述时刻仅为示意性的，对于时间轴对应的时间单位在此本申请实施例不作具体限定。
请参阅图4，图4是本申请实施例提供的又一种拍摄方法的流程示意图。如图4所示，该方法包括以下步骤。
步骤S401，终端确定向外接摄像头设备传输指令时的单向传输时长。
步骤S402，当接收到拍摄指令时，终端确定第一摄像头的拍摄延时长度为第一时长，并且终端将第一时长与单向传输时长发送给外接摄像头设备。
步骤S403，外接摄像头设备根据第一时长与单向传输时长，确定第二摄 像头的拍摄延时长度为第二时长，其中，第二时长为第一时长与单向传输时长的差。
步骤S404，终端在第一时长后，控制第一摄像头开始拍摄；外接摄像头设备在第二时长后，控制第二摄像头开始拍摄。
在一些可能的实现方式中，步骤S401的实现方式可以参见上述实施例。其中，终端与外接摄像头设备可以实现所处时刻同步，也可以实现所处时刻不同步，在此本申请实施例不做具体限定。当接收到拍摄指令时，终端可以确定第一摄像头的拍摄延时长度为第一时长，其中，第一时长需要大于单向传输时长。终端可以基于该第一时长开始计时，同时，终端将确定的第一时长与单向传输时长发送给外接摄像头设备，从而外接摄像头设备确定第二摄像头的拍摄延时长度。其中，当外接摄像头设备接收到上述信息时，已经经过了一个单向传输时长，则外接摄像头设备需要确定第二时长为第一时长减去单向传输时长，外接摄像头设备可以基于第二时长开始计时。当终端对第一时长计时时满时，控制第一摄像头开始拍摄；当外接摄像头设备对第一时长计时时满时，控制第二摄像头开始拍摄，以实现第一摄像头与第二摄像头拍摄同步。当然，终端还可以根据第一时长计算出第一摄像头的拍摄时刻，外接摄像头设备可以根据第二时长计算出第二摄像头的拍摄时刻，并在相应的拍摄时刻，终端控制第一摄像头进行拍摄；外接摄像头设备控制第二摄像头进行拍摄。
下面结合图5对上述实施例进行说明。如图5所示，终端与外接摄像头设备的起始时刻不同，终端的起始时刻为时刻1000，外接摄像头设备的起始时刻为时刻2000。可以参见图3所示的方式对终端与外接摄像头设备的时间能够同步，在此，本申请实施例以终端的基准时间与外接摄像头设备的基准时间不做同步进行说明。终端在其基准的时刻1010向外接摄像头设备发送第一指令，外接摄像头设备在其基准的时刻2020接收到该第一指令，并在时刻2020向终端发送针对该第一指令的响应，终端在期基准的时刻1030接收到响应。则终端可以确定在时刻1010发送第一指令，在时刻1030发送了针对该第一指令的响应，终端可以计算出终端向外接摄像头设备的单向传输时长为10。当终端在其基准的时刻2000接收到拍摄指令时，此时外接摄像头设备基准的时刻为时刻3000。终端确定第一摄像头的拍摄延时长度为20，则终端将确定的拍摄延时长度20与单向传输时长10一次传输给外接摄像头设备，外接摄像头设备在其基准的时刻3010接收到上述信息。当然，终端还可以在计算出单向传输时长后，在接收到拍摄指令之前的任意时刻向外接摄像头设备发送单向传输时长，在此本申请实施例不做具体限定。当外接摄像头设备在时刻3010接收到上述信息后，能够计算出第二摄像头的拍摄延时长度为10，则确定第二摄像头的拍摄时刻为时刻3020。在终端的时刻2020，终端控制第一摄像头开始拍摄；在外接摄像头设备的时刻3020，外接摄像头设备控制第二摄像头开始拍摄。则通过上述方式能够降低终端与外接摄像头设备的传输开销，并且无需对终端与外接摄像头设备的基准时间进行同步校准，来实现第一摄像头与第 二摄像头同步拍摄。
请参阅图6，图6是本申请实施例提供的又一种拍摄方法的流程示意图。如图6所示，该方法包括以下步骤。
步骤S601，终端确定向外接摄像头设备传输指令时的单向传输时长。
步骤S602，当终端接收到拍摄指令时，所述终端确定所述第二摄像头的延时长度为第三时长，并将所述第三时长发送给所述外接摄像头设备。
步骤S603，终端根据所述第三时长与所述单向传输时长，确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
步骤S604，终端在第四时长后，控制第一摄像头开始拍摄；外接摄像头设备在第三时长后，控制第二摄像头开始拍摄。
在一些可能的实现方式中，步骤S601的实现方式可以参见上述实施例。终端可以在接收到拍摄指令后，可以首先确定第二摄像头的拍摄延时长度为第三时长，终端可以在确定出第三时长后，即将第三时长发送给外接摄像头设备；同时，终端还可以根据第三时长以及单向传输时长，确定出第一摄像头的拍摄延时长度为第四时长，第四时长是第三时长与单向传输时长之和。在此，本申请实施例不要求第三时长大于单向传输时长。终端可以基于计算出的第四时长开始计时，外接摄像头设备在接收到第三时长时，可以基于第三时长开始计时，当终端对第四时长计时时满时，控制第一摄像头开始拍摄；当外接摄像头设备对第三时长计时时满时，控制第二摄像头开始拍摄，以实现第一摄像头与第二摄像头拍摄同步。当然，终端还可以根据第四时长计算出第一摄像头的拍摄时刻，外接摄像头设备可以根据第三时长计算出第二摄像头的拍摄时刻，并在相应的拍摄时刻，终端控制第一摄像头进行拍摄；外接摄像头设备控制第二摄像头进行拍摄。
下面结合图7对上述实施例进行说明。如图7所示，终端与外接摄像头设备的起始时刻不同，终端的起始时刻为时刻1000，外接摄像头设备的起始时刻为时刻2000。可以参见图3所示的方式对终端与外接摄像头设备的时间能够同步，在此，本申请实施例以终端的基准时间与外接摄像头设备的基准时间不做同步进行说明。终端在其基准的时刻1010向外接摄像头设备发送第一指令，外接摄像头设备在其基准的时刻2020接收到该第一指令，并在时刻2020向终端发送针对该第一指令的响应，终端在期基准的时刻1030接收到响应。则终端可以确定在时刻1010发送第一指令，在时刻1030发送了针对该第一指令的响应，终端可以计算出终端向外接摄像头设备的单向传输时长为10。当终端在其基准的时刻2000接收到拍摄指令时，此时外接摄像头设备基准的时刻为时刻3000。终端确定第二摄像头的拍摄延时长度为10，则终端将确定的第二摄像头的拍摄延时长度10发送给外接摄像头设备，外接摄像头设备在其基准的时刻3010接收到上述信息。终端在期基准的时刻2000向外接摄像头设备发送第二摄像头的拍摄延时长度10时，终端可以计算出第一摄像头的拍摄 延时时长为20。在终端的时刻2020，终端控制第一摄像头开始拍摄；在外接摄像头设备的时刻3020，外接摄像头设备控制第二摄像头开始拍摄。则通过上述方式能够降低终端与外接摄像头设备的传输开销，并且无需对终端与外接摄像头设备的基准时间进行同步校准，来实现第一摄像头与第二摄像头同步拍摄。
可选的，还有一种实现方式为终端同时确定第一摄像头的拍摄延时长度与第二摄像头的拍摄延时长度，其中，第二摄像头的拍摄延时长度为第一摄像头的拍摄延时长度与单向传输时长之差。终端在确定出第二摄像头的拍摄延时长度的同时，能够将第二摄像头的拍摄延时长度发送给外接摄像头设备。以实现第一摄像头与第二摄像头同步开始拍摄。
下面介绍用于执行上述方法实施例的装置实施例。
请参阅图8，图8是本申请实施例提供的一种终端的单元组成框图。其中，终端包括输入单元801801、处理单元802及输出单元803803。
其中，所述处理单元802，用于确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
所述处理单元802，还用于当通过所述输入单元801接收到拍摄指令时，根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
所述处理单元802，还用于根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
可选的，所述处理单元802还用于：
控制所述输出单元803向外接摄像头设备发送第一指令并记录发送时刻；
通过所述输入单元801接收到所述外接摄像头设备发送的针对所述第一指令的响应时，记录接收到所述响应的接收时刻；
根据所述发送时刻和所述接收时刻，计算所述终端与所述外接摄像头设备之间的双向传输时长，并根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长。
可选的，所述第一指令携带有所述发送时刻，以控制所述外接摄像头设备将当前所处时刻更新为所述发送时刻；
其中，所述处理单元802还用于：
将所述单向传输时长发送给所述外接摄像头设备，以控制所述外接摄像头设备根据所述单向传输时长修正所述外接摄像头设备当前所处时刻。
可选的，所述处理单元802还用于：
确定所述第一摄像头的起始拍摄时间为第一时刻，并将所述第一时刻发送给所述外接摄像头设备，以通知所述外接摄像头设备控制所述第二摄像头在所述第一时刻时开始拍摄。
可选的，所述处理单元802还用于：
确定所述第一摄像头的拍摄延时长度为第一时长；
控制所述输出单元803将所述第一时长与所述单向传输时长同时发送给所述外接摄像头设备，所述外接摄像头设备用于根据所述第一时长与所述单向传输时长确定所述第二摄像头的拍摄延时长度为第二时长，其中，所述第二时长为所述第一时长与所述单向传输时长之差。
可选的，所述处理单元802还用于：
确定所述第二摄像头的拍摄延时长度为第三时长，并控制所述输出单元803将所述第三时长发送给所述外接摄像头设备；
确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
可选的，所述处理单元802还用于：
计算所述终端到所述外接摄像头设备的单向传输时长为所述双向传输时长的一半。
请参阅图9，图9是本申请实施例提供的一种终端的结构示意图。
该终端包括输入输出装置901，处理器902、存储器903和通信接口904。输入输出装置901、处理器902、存储器903和通信接口904可以通过通信总线进行耦合。
其中，输入输出装置901中可以包括具备输入功能的装置，例如，摄像头、录音装置等，触控屏及各种感知环境的传感器，例如陀螺仪、加速度传感器、红外传感器等；也可以包括具备输出功能的装置，例如显示屏、音响装置等。
处理器902可以是通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制以上方案程序执行的集成电路。处理器902能够接收输入装置901输入的数据，并对其进行处理。
存储器903可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器903可以是独立存在，通过总线与处理器902相连接。存储器903也可以和处理器902集成在一起。存储器903可以存储有可执行指令，或者预配置数据等。例如，执行本申请实施例的方法中所应用的阈值 可以预先存储在存储器中，用于执行本申请实施例方法的可执行指令也可存储在存储器903中，以供处理器902调用执行。
通信接口904可以包括有线通信接口，如USB通信接口；也可以包括无线通信接口。
具体的，处理器902用于调用所述计算机指令以执行以下步骤：
确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
当接收到拍摄指令时，根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
可选的，在确定向外接摄像头设备传输指令时的单向传输时长的方面，所述处理器902的实现方式为：
向外接摄像头设备发送第一指令并记录发送时刻；
接收到所述外接摄像头设备发送的针对所述第一指令的响应时，记录接收到所述响应的接收时刻；
根据所述发送时刻和所述接收时刻，计算所述终端与所述外接摄像头设备之间的双向传输时长，并根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长。
可选的，所述第一指令携带有所述发送时刻，以控制所述外接摄像头设备将当前所处时刻更新为所述发送时刻；
其中，所述处理器902还用于调用所述计算机指令以执行以下步骤：
将所述单向传输时长发送给所述外接摄像头设备，以控制所述外接摄像头设备根据所述单向传输时长修正所述外接摄像头设备当前所处时刻。
可选的，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间的方面，所述处理器902的实现方式为：
确定所述第一摄像头的起始拍摄时间为第一时刻，并将所述第一时刻发送给所述外接摄像头设备，以通知所述外接摄像头设备控制所述第二摄像头在所述第一时刻时开始拍摄。
可选的，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间的方面，所述处理器902的实现方式为：
确定所述第一摄像头的拍摄延时长度为第一时长；
将所述第一时长与所述单向传输时长同时发送给所述外接摄像头设备，所述外接摄像头设备用于根据所述第一时长与所述单向传输时长确定所述第二摄像头的拍摄延时长度为第二时长，其中，所述第二时长为所述第一时长与所述单向传输时长之差。
可选的，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄 像头的起始拍摄时间的方面，所述处理器902的实现方式为：
确定所述第二摄像头的拍摄延时长度为第三时长，并将所述第三时长发送给所述外接摄像头设备；
确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
可选的，其特征在于，在根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长的方面，所述处理器902的实现方式为：
计算所述终端到所述外接摄像头设备的单向传输时长为所述双向传输时长的一半。
上述终端还可实现上述方法实施例中描述的部分或全部实现方式，在此不再赘述。
在上述各个本发明实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读介质向另一个计算机可读介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如，固态硬盘(Solid State Disk，SSD))等。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (22)

  1. 一种拍摄方法，其特征在于，包括：
    终端确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
    当接收到拍摄指令时，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
    所述终端根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
  2. 如权利要求1所述方法，其特征在于，所述终端确定向外接摄像头设备传输指令时的单向传输时长，包括：
    所述终端向外接摄像头设备发送第一指令并记录发送时刻；
    所述终端接收到所述外接摄像头设备发送的针对所述第一指令的响应时，记录接收到所述响应的接收时刻；
    所述终端根据所述发送时刻和所述接收时刻，计算所述终端与所述外接摄像头设备之间的双向传输时长，并根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长。
  3. 如权利要求2所述方法，其特征在于，所述第一指令携带有所述发送时刻，以控制所述外接摄像头设备将当前所处时刻更新为所述发送时刻；
    其中，当所述终端计算出所述单向传输时长后，所述方法还包括：
    所述终端将所述单向传输时长发送给所述外接摄像头设备，以控制所述外接摄像头设备根据所述单向传输时长修正所述外接摄像头设备当前所处时刻。
  4. 如权利要求3所述方法，其特征在于，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，包括：
    所述终端确定所述第一摄像头的起始拍摄时间为第一时刻，并将所述第一时刻发送给所述外接摄像头设备，以通知所述外接摄像头设备控制所述第二摄像头在所述第一时刻时开始拍摄。
  5. 如权利要求2所述方法，其特征在于，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，包括：
    所述终端确定所述第一摄像头的拍摄延时长度为第一时长；
    所述终端将所述第一时长与所述单向传输时长同时发送给所述外接摄像头设备，所述外接摄像头设备用于根据所述第一时长与所述单向传输时长确定所述第二摄像头的拍摄延时长度为第二时长，其中，所述第二时长为所述第一时长与所述单向传输时长之差。
  6. 如权利要求2所述方法，其特征在于，所述终端根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，包括：
    所述终端确定所述第二摄像头的拍摄延时长度为第三时长，并将所述第三时长发送给所述外接摄像头设备；
    所述终端确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
  7. 如权利要求2-6任一项所述方法，其特征在于，所述终端根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长，包括：
    计算所述终端到所述外接摄像头设备的单向传输时长为所述双向传输时长的一半。
  8. 一种终端，其特征在于，包括输入单元、处理单元及输出单元，其中：
    所述处理单元，用于确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
    所述处理单元，还用于当通过所述输入单元接收到拍摄指令时，根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
    所述处理单元，还用于根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
  9. 如权利要求8所述终端，其特征在于，所述处理单元还用于：
    控制所述输出单元向外接摄像头设备发送第一指令并记录发送时刻；
    通过所述输入单元接收到所述外接摄像头设备发送的针对所述第一指令的响应时，记录接收到所述响应的接收时刻；
    根据所述发送时刻和所述接收时刻，计算所述终端与所述外接摄像头设备之间的双向传输时长，并根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长。
  10. 如权利要求9所述终端，其特征在于，所述第一指令携带有所述发送时刻，以控制所述外接摄像头设备将当前所处时刻更新为所述发送时刻；
    其中，所述处理单元还用于：
    将所述单向传输时长发送给所述外接摄像头设备，以控制所述外接摄像头设备根据所述单向传输时长修正所述外接摄像头设备当前所处时刻。
  11. 如权利要求10所述终端，其特征在于，所述处理单元还用于：
    确定所述第一摄像头的起始拍摄时间为第一时刻，并将所述第一时刻发送给所述外接摄像头设备，以通知所述外接摄像头设备控制所述第二摄像头在所述第一时刻时开始拍摄。
  12. 如权利要求9所述终端，其特征在于，所述处理单元还用于：
    确定所述第一摄像头的拍摄延时长度为第一时长；
    控制所述输出单元将所述第一时长与所述单向传输时长同时发送给所述外接摄像头设备，所述外接摄像头设备用于根据所述第一时长与所述单向传输 时长确定所述第二摄像头的拍摄延时长度为第二时长，其中，所述第二时长为所述第一时长与所述单向传输时长之差。
  13. 如权利要求9所述终端，其特征在于，所述处理单元还用于：
    确定所述第二摄像头的拍摄延时长度为第三时长，并控制所述输出单元将所述第三时长发送给所述外接摄像头设备；
    确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
  14. 如权利要求9-13任一项所述终端，其特征在于，所述处理单元还用于：
    计算所述终端到所述外接摄像头设备的单向传输时长为所述双向传输时长的一半。
  15. 一种终端，其特征在于，包括处理器和存储器；
    所述存储器用于存储计算机指令；
    所述处理器用于调用所述计算机指令以执行以下步骤：
    确定向外接摄像头设备传输指令时的单向传输时长，其中，所述终端中配置的摄像头为第一摄像头，所述外接摄像头设备中配置的摄像头为第二摄像头；
    当接收到拍摄指令时，根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间，以控制所述第一摄像头与所述第二摄像头同时开始拍摄；
    根据所述第一摄像头拍摄的图像与所述第二摄像头拍摄的图像生成三维图像。
  16. 如权利要求15所述终端，其特征在于，在确定向外接摄像头设备传输指令时的单向传输时长的方面，所述处理器的实现方式为：
    向外接摄像头设备发送第一指令并记录发送时刻；
    接收到所述外接摄像头设备发送的针对所述第一指令的响应时，记录接收到所述响应的接收时刻；
    根据所述发送时刻和所述接收时刻，计算所述终端与所述外接摄像头设备之间的双向传输时长，并根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长。
  17. 如权利要求16所述终端，其特征在于，所述第一指令携带有所述发送时刻，以控制所述外接摄像头设备将当前所处时刻更新为所述发送时刻；
    其中，所述处理器还用于调用所述计算机指令以执行以下步骤：
    将所述单向传输时长发送给所述外接摄像头设备，以控制所述外接摄像头设备根据所述单向传输时长修正所述外接摄像头设备当前所处时刻。
  18. 如权利要求17所述终端，其特征在于，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间的方面，所述处理器的实现方式为：
    确定所述第一摄像头的起始拍摄时间为第一时刻，并将所述第一时刻发送 给所述外接摄像头设备，以通知所述外接摄像头设备控制所述第二摄像头在所述第一时刻时开始拍摄。
  19. 如权利要求16所述终端，其特征在于，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间的方面，所述处理器的实现方式为：
    确定所述第一摄像头的拍摄延时长度为第一时长；
    将所述第一时长与所述单向传输时长同时发送给所述外接摄像头设备，所述外接摄像头设备用于根据所述第一时长与所述单向传输时长确定所述第二摄像头的拍摄延时长度为第二时长，其中，所述第二时长为所述第一时长与所述单向传输时长之差。
  20. 如权利要求16所述终端，其特征在于，在根据所述单向传输时长确定所述第一摄像头和/或所述第二摄像头的起始拍摄时间的方面，所述处理器的实现方式为：
    确定所述第二摄像头的拍摄延时长度为第三时长，并将所述第三时长发送给所述外接摄像头设备；
    确定所述第一摄像头的拍摄延时长度为第四时长，其中，所述第四时长为所述第三时长与所述单向传输时长之和。
  21. 如权利要求16-20任一项所述终端，其特征在于，在根据所述双向传输时长计算所述终端到所述外接摄像头设备的单向传输时长的方面，所述处理器的实现方式为：
    计算所述终端到所述外接摄像头设备的单向传输时长为所述双向传输时长的一半。
  22. 一种存储计算机指令的可读非易失性存储介质，所述计算机指令被用户终端执行以实现权利要求1-7中任意一个方法。
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