CN111866389A - Video tracking shooting method and device and computer readable storage medium - Google Patents
Video tracking shooting method and device and computer readable storage medium Download PDFInfo
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- CN111866389A CN111866389A CN202010742113.4A CN202010742113A CN111866389A CN 111866389 A CN111866389 A CN 111866389A CN 202010742113 A CN202010742113 A CN 202010742113A CN 111866389 A CN111866389 A CN 111866389A
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
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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
- H04N23/62—Control of parameters via user interfaces
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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
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
Abstract
The invention discloses a video tracking shooting method, a device and a computer readable storage medium, wherein the method comprises the following steps: detecting and tracking a moving object in the video shooting process in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a video tracking shooting method, device, and computer-readable storage medium.
Background
In the prior art, with the rapid development of intelligent terminal equipment, more and more users begin to adopt mobile terminal equipment to take video. Particularly, as video cultures such as small videos or short videos go deeper into the study and life of common users, some video platforms are filled with various video special effects of small videos or short videos. The video shooting of the moving object based on the visual angle requires the user to track the moving object in real time, the video shooting operation has high operation difficulty for the user on the mobile terminal device, the operation requirement on the user is high, and the shooting method of the video is also high in requirement.
Therefore, in the prior art, a motion video tracking shooting scheme based on the mobile terminal is single, and the diversified video shooting requirements of users cannot be met.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a video tracking shooting method, which comprises the following steps:
detecting and tracking a moving object in the video shooting process in real time;
determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
Optionally, the detecting and tracking a moving object in a video shooting process in real time includes:
acquiring video preview data, and detecting a shooting object in real time in the video preview data;
determining the moving object according to the moving state of the shooting object in the framing range;
and tracking the moving state and the object form of the moving object.
Optionally, the determining display parameters of the moving object in the current shooting process, and determining the shooting component corresponding to the display parameters by combining preset regulation and control parameters, includes:
analyzing the moving state to obtain a displacement vector of the moving object, and simultaneously analyzing the object form to obtain a display form variable of the moving object;
and determining the display parameters in real time according to the displacement vector and the display form variable.
Optionally, the determining display parameters of the moving object in the current shooting process, and determining the shooting component corresponding to the display parameters by combining preset regulation and control parameters, further includes:
analyzing the display parameters to obtain the motion parameters and deformation parameters of the moving object;
presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting component;
and adjusting a shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter.
Optionally, the switching the shooting component in real time according to the tracking trajectory of the moving object to perform continuous shooting includes:
determining the switching time of the shooting components and two groups of shooting component types before and after switching;
determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
The present invention also proposes a video tracking shooting device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing:
detecting and tracking a moving object in the video shooting process in real time;
determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
Optionally, the computer program when executed by the processor implements:
acquiring video preview data, and detecting a shooting object in real time in the video preview data;
determining the moving object according to the moving state of the shooting object in the framing range;
and tracking the moving state and the object form of the moving object.
Optionally, the computer program when executed by the processor implements:
analyzing the moving state to obtain a displacement vector of the moving object, and simultaneously analyzing the object form to obtain a display form variable of the moving object;
and determining the display parameters in real time according to the displacement vector and the display form variable.
Optionally, the computer program when executed by the processor implements:
analyzing the display parameters to obtain the motion parameters and deformation parameters of the moving object;
presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting component;
adjusting a shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter;
determining the switching time of the shooting components and two groups of shooting component types before and after switching;
determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
The present invention also proposes a computer readable storage medium having stored thereon a video tracking shooting program which, when executed by a processor, implements the steps of the video tracking shooting method as described in any one of the above.
The video tracking shooting method, the video tracking shooting equipment and the computer readable storage medium are implemented by detecting and tracking a moving object in the video shooting process in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention;
fig. 2 is a communication network system architecture diagram provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a first embodiment of a video tracking capture method of the present invention;
FIG. 4 is a flow chart of a second embodiment of the video tracking capture method of the present invention;
FIG. 5 is a flow chart of a third embodiment of a video tracking capture method of the present invention;
FIG. 6 is a flow chart of a fourth embodiment of the video tracking capture method of the present invention;
fig. 7 is a flowchart of a fifth embodiment of the video tracking shot method of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), and TDD-LTE (Time Division duplex-Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and charging functions Entity) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.
Example one
Fig. 3 is a flow chart of a first embodiment of the video tracking shooting method of the present invention. A video tracking shot method, the method comprising:
s1, detecting and tracking a moving object in the video shooting process in real time;
s2, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and S3, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
In the embodiment, firstly, a moving object in the video shooting process is detected and tracked in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
Specifically, in this embodiment, first, a moving object in a video shooting process is detected and tracked in real time, where the detection mechanism of the moving object includes multiple types, for example, in a unit time period, a moving displacement of each object is detected, and if the moving displacement exceeds a preset displacement, the object is determined to be the moving object, or, in the unit time period, a picture occupation ratio of each object is detected, and a variation of the picture occupation ratio exceeds a preset variation, the object is determined to be the moving object, or, in combination with the above two methods, the moving displacement exceeds the preset displacement and the variation of the picture occupation ratio exceeds the preset variation, the object is determined to be the moving object. In this embodiment, there may be a plurality of moving objects in the video shooting process, and in order to improve the execution accuracy and effect of the present scheme, one or fewer moving objects are generally selected for tracking. Specifically, among the plurality of moving objects, a moving object at a position closer to the geometric center of the captured image is taken as the tracking object, or a moving object at a position closer to the golden section point of the captured image is taken as the tracking object, or an object having a large amount of motion displacement or an object having a large amount of change in the image occupancy rate may be determined depending on the object. It will be appreciated that the present embodiment may employ one or more of the above schemes for determining the moving object to be tracked.
Specifically, in this embodiment, a moving object in a video shooting process is tracked, then, display parameters of the moving object in a current shooting process are determined, and a shooting component corresponding to the display parameters is determined by combining preset regulation and control parameters. It should be noted that, in the present embodiment, the terminal device includes at least two shooting components with different hardware parameters, for example, a mobile terminal device including a telephoto lens and a wide-angle lens. In this embodiment, because the shooting components with different hardware parameters have different visual shooting effects and object display effects when shooting the same object, when tracking and shooting some moving objects, switching between the telephoto lens and the wide-angle lens is performed in real time, so that the moving objects can be better tracked, or a better special moving shooting effect is achieved. Specifically, in this embodiment, first, display parameters of the moving object in the current shooting process are determined, where the display parameters include a display scale, a form distortion amount, and the like of the moving object, and then, a shooting component corresponding to the display parameters is determined in combination with preset regulation and control parameters, where the regulation and control parameters are used to adjust a switching mechanism of the shooting component, thereby bringing about a better image transition effect and a continuous tracking shooting effect.
The method has the advantages that the moving object in the video shooting process is detected and tracked in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
Example two
Fig. 4 is a flowchart of a second embodiment of the video tracking shooting method according to the present invention, based on the above embodiment, the detecting and tracking a moving object in the video shooting process in real time includes:
s11, acquiring video preview data, and detecting a shooting object in the video preview data in real time;
s12, determining the moving object according to the moving state of the shooting object in the framing range;
and S13, tracking the moving state and the object form of the moving object.
In this embodiment, first, video preview data is acquired, and a shooting object is detected in real time in the video preview data; then, determining the moving object according to the moving state of the shooting object in the framing range; and finally, tracking the moving state and the object form of the moving object.
Optionally, detecting a background image and a main body image in real time in the video preview data, and then determining the moving object in the main body image, for example, during the process of shooting a person to run, a tree in the background of the person moves along with the movement of a lens, so that in the embodiment, the moving object in the main body image is determined as a tracking object;
optionally, the moving object is determined according to a moving state of the shooting object in the framing range, wherein the moving state comprises a displacement variable in unit time, or the moving object moves to a specific position in the framing range, or the display scale of the moving object in the framing range is increased or decreased to a preset value;
optionally, the moving state and the object form of the moving object are tracked, wherein, in order to further improve the tracking accuracy and the processing timeliness of the moving object, in the embodiment, especially, tracking of the object form is added, wherein the object form comprises two parts, namely, the motion amount of part of the organization of the object, such as the motion state of the arms or legs of the person, and the overall form of the object, such as the combined motion of the hands and the feet of the person, the running posture and the like.
The method has the advantages that the shooting object is detected in real time in the video preview data by acquiring the video preview data; then, determining the moving object according to the moving state of the shooting object in the framing range; and finally, tracking the moving state and the object form of the moving object. The humanized video tracking shooting scheme is realized, a shooting hardware foundation and a shooting condition foundation are provided for subsequent video shooting, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the shooting video special effect of the moving object is optimized, and the user experience is enhanced.
EXAMPLE III
Fig. 5 is a flowchart of a video tracking shooting method according to a third embodiment of the present invention, where based on the above embodiments, the determining a display parameter of the moving object in the current shooting process, and determining a shooting component corresponding to the display parameter by combining a preset regulation parameter includes:
s21, analyzing the moving state to obtain a displacement vector of the moving object, and analyzing the object form to obtain a display form variable of the moving object;
and S22, determining the display parameters in real time according to the displacement vector and the display form variable.
In this embodiment, first, the moving state is analyzed to obtain a displacement vector of the moving object, and meanwhile, the object form is analyzed to obtain a display form variable of the moving object; and then, determining the display parameters in real time according to the displacement vector and the display form variable.
Alternatively, in this embodiment, the movement state is analyzed to obtain the displacement vector of the moving object, and the object form is analyzed to obtain the display form variable of the moving object, and similarly, as described in the above example, the analysis operation includes two parts, namely, analyzing the movement amount of a part of the structure of the object, for example, the movement state of the arm or leg of the person, and analyzing the overall form configuration of the object, for example, the hand-foot combination movement, the running posture, and the like of the person;
optionally, obtaining a displacement vector of a part of tissues of the object, and/or a display form variable of the whole form;
optionally, the display parameters are determined in real time according to the displacement vector and the display form variable, where the display parameters include a display scale and a form distortion amount of the moving object, and further, the display parameters further include a video processing special effect adapted to the display scale and the form distortion amount, and it is understood that the display parameters are display parameters under a current shooting assembly, and when switching of the shooting assembly is involved, the display parameters under the current shooting assembly are switched to display parameters under another shooting assembly.
The method has the advantages that the displacement vector of the moving object is obtained by analyzing the moving state, and the display form variable of the moving object is obtained by analyzing the form of the object; and then, determining the display parameters in real time according to the displacement vector and the display form variable. The humanized video tracking shooting scheme is realized, a shooting hardware foundation and a shooting condition foundation are provided for subsequent video shooting, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the shooting video special effect of the moving object is optimized, and the user experience is enhanced.
Example four
Fig. 6 is a flowchart of a fourth embodiment of the video tracking shooting method according to the present invention, where based on the above embodiments, the determining a display parameter of the moving object in the current shooting process, and determining a shooting component corresponding to the display parameter by combining a preset regulation parameter, further includes:
s23, analyzing the display parameters to obtain the motion parameters and the deformation parameters of the moving object;
s24, presetting control parameters for controlling the starting state, the switching state and the combined state of the shooting components;
and S25, adjusting the shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter.
In this embodiment, first, the display parameters are analyzed to obtain the motion parameters and the deformation parameters of the moving object; then, presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting assembly; and finally, adjusting the shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter.
Optionally, in this embodiment, the display parameters are analyzed to obtain motion parameters and deformation parameters of the moving object, where the motion parameters and the deformation parameters are used to accurately position a current shooting state of the moving object, that is, to determine a time when the shooting component needs to be switched according to the shooting state and a preset switching trigger condition;
optionally, in this embodiment, the control parameters for controlling the enabling state, the switching state, and the using state of the shooting component are preset, that is, the control parameters for controlling the enabling state, the switching state, and the using state corresponding to one or more of the normal lens, the wide-angle lens, the ultra-wide-angle lens, the telephoto lens, the ultra-telephoto lens, and the zoom lens are preset.
The method has the advantages that the motion parameters and the deformation parameters of the moving object are obtained by analyzing the display parameters; then, presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting assembly; and finally, adjusting the shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter. The humanized video tracking shooting scheme is realized, a shooting hardware foundation and a shooting condition foundation are provided for subsequent video shooting, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the shooting video special effect of the moving object is optimized, and the user experience is enhanced.
EXAMPLE five
Fig. 7 is a flowchart of a fifth embodiment of a video tracking shooting method according to the present invention, based on the above embodiment, the switching the shooting component in real time according to the tracking trajectory of the moving object to perform continuous shooting includes:
s31, determining the switching time of the shooting components and two groups of shooting component types before and after switching;
s32, determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and S33, executing the switching operation of the shooting components according to the transition and the switching time in the continuous shooting process.
In this embodiment, first, a switching timing of the shooting component and two groups of shooting component types before and after switching are determined; then, determining corresponding field-crossing transformation according to the types of the two groups of shooting components; and finally, executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
Specifically, for example, when the moving object to be photographed is a moving individual, if the moving individual is relatively close to the photographing device, it is suitable to perform tracking using the main lens, and if the moving individual is already far from the photographing device, the individual photographed by the main lens becomes smaller, and in this case, if the moving object is small, there is a high possibility that a tracking error occurs. Therefore, when a certain condition is met, the zoom lens is switched to the telephoto lens to continue tracking. For example, the moving object detection may be performed while the main camera is turned on to perform video shooting, and background modeling (for example, gaussian background modeling) may be performed before the detection, or the moving object may be manually marked. And tracking the moving target by using a correlation algorithm, and predicting the position of the next frame according to the position of the moving target in the current frame when the finger is tracked. And calculating the radius change trend of the moving object, calculating the proportion R of the width of the moving object in the horizontal direction in the image acquired by the main camera, wherein R1 is the transverse width of the moving object, and R2 is the width of the whole image: then R1/R2, when the moving object gradually moves away from the shooting device and the ratio R of the radius occupied in the image is less than a certain threshold T, then it is determined whether the moving object is within the field angle of the telephoto lens. And if the moving target is judged to be in the field angle of the telephoto lens, switching the lens to the telephoto lens for tracking. Optionally, during the telephoto lens tracking process, the variation trend of the transverse radius of the moving object and the proportion of the radius in the image are also calculated, and if the proportion exceeds a certain threshold value T1, if the moving object is close to the shooting device, the main camera is switched to perform tracking. Optionally, the above steps are continuously cycled until the video shooting is finished.
The method has the advantages that the switching time of the shooting components and the types of the two groups of shooting components before and after switching are determined; then, determining corresponding field-crossing transformation according to the types of the two groups of shooting components; and finally, executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
EXAMPLE six
Based on the foregoing embodiments, the present invention further provides a video tracking shooting device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program when executed by the processor implements:
detecting and tracking a moving object in the video shooting process in real time;
determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
In the embodiment, firstly, a moving object in the video shooting process is detected and tracked in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
Specifically, in this embodiment, first, a moving object in a video shooting process is detected and tracked in real time, where the detection mechanism of the moving object includes multiple types, for example, in a unit time period, a moving displacement of each object is detected, and if the moving displacement exceeds a preset displacement, the object is determined to be the moving object, or, in the unit time period, a picture occupation ratio of each object is detected, and a variation of the picture occupation ratio exceeds a preset variation, the object is determined to be the moving object, or, in combination with the above two methods, the moving displacement exceeds the preset displacement and the variation of the picture occupation ratio exceeds the preset variation, the object is determined to be the moving object. In this embodiment, there may be a plurality of moving objects in the video shooting process, and in order to improve the execution accuracy and effect of the present scheme, one or fewer moving objects are generally selected for tracking. Specifically, among the plurality of moving objects, a moving object at a position closer to the geometric center of the captured image is taken as the tracking object, or a moving object at a position closer to the golden section point of the captured image is taken as the tracking object, or an object having a large amount of motion displacement or an object having a large amount of change in the image occupancy rate may be determined depending on the object. It will be appreciated that the present embodiment may employ one or more of the above schemes for determining the moving object to be tracked.
Specifically, in this embodiment, a moving object in a video shooting process is tracked, then, display parameters of the moving object in a current shooting process are determined, and a shooting component corresponding to the display parameters is determined by combining preset regulation and control parameters. It should be noted that, in the present embodiment, the terminal device includes at least two shooting components with different hardware parameters, for example, a mobile terminal device including a telephoto lens and a wide-angle lens. In this embodiment, because the shooting components with different hardware parameters have different visual shooting effects and object display effects when shooting the same object, when tracking and shooting some moving objects, switching between the telephoto lens and the wide-angle lens is performed in real time, so that the moving objects can be better tracked, or a better special moving shooting effect is achieved. Specifically, in this embodiment, first, display parameters of the moving object in the current shooting process are determined, where the display parameters include a display scale, a form distortion amount, and the like of the moving object, and then, a shooting component corresponding to the display parameters is determined in combination with preset regulation and control parameters, where the regulation and control parameters are used to adjust a switching mechanism of the shooting component, thereby bringing about a better image transition effect and a continuous tracking shooting effect.
The method has the advantages that the moving object in the video shooting process is detected and tracked in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
EXAMPLE seven
Based on the above embodiments, the computer program when executed by the processor implements:
acquiring video preview data, and detecting a shooting object in real time in the video preview data;
determining the moving object according to the moving state of the shooting object in the framing range;
and tracking the moving state and the object form of the moving object.
In this embodiment, first, video preview data is acquired, and a shooting object is detected in real time in the video preview data; then, determining the moving object according to the moving state of the shooting object in the framing range; and finally, tracking the moving state and the object form of the moving object.
Optionally, detecting a background image and a main body image in real time in the video preview data, and then determining the moving object in the main body image, for example, during the process of shooting a person to run, a tree in the background of the person moves along with the movement of a lens, so that in the embodiment, the moving object in the main body image is determined as a tracking object;
optionally, the moving object is determined according to a moving state of the shooting object in the framing range, wherein the moving state comprises a displacement variable in unit time, or the moving object moves to a specific position in the framing range, or the display scale of the moving object in the framing range is increased or decreased to a preset value;
optionally, the moving state and the object form of the moving object are tracked, wherein, in order to further improve the tracking accuracy and the processing timeliness of the moving object, in the embodiment, especially, tracking of the object form is added, wherein the object form comprises two parts, namely, the motion amount of part of the organization of the object, such as the motion state of the arms or legs of the person, and the overall form of the object, such as the combined motion of the hands and the feet of the person, the running posture and the like.
The method has the advantages that the shooting object is detected in real time in the video preview data by acquiring the video preview data; then, determining the moving object according to the moving state of the shooting object in the framing range; and finally, tracking the moving state and the object form of the moving object. The humanized video tracking shooting scheme is realized, a shooting hardware foundation and a shooting condition foundation are provided for subsequent video shooting, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the shooting video special effect of the moving object is optimized, and the user experience is enhanced.
Example eight
Based on the above embodiments, the computer program when executed by the processor implements:
analyzing the moving state to obtain a displacement vector of the moving object, and simultaneously analyzing the object form to obtain a display form variable of the moving object;
and determining the display parameters in real time according to the displacement vector and the display form variable.
In this embodiment, first, the moving state is analyzed to obtain a displacement vector of the moving object, and meanwhile, the object form is analyzed to obtain a display form variable of the moving object; and then, determining the display parameters in real time according to the displacement vector and the display form variable.
Alternatively, in this embodiment, the movement state is analyzed to obtain the displacement vector of the moving object, and the object form is analyzed to obtain the display form variable of the moving object, and similarly, as described in the above example, the analysis operation includes two parts, namely, analyzing the movement amount of a part of the structure of the object, for example, the movement state of the arm or leg of the person, and analyzing the overall form configuration of the object, for example, the hand-foot combination movement, the running posture, and the like of the person;
optionally, obtaining a displacement vector of a part of tissues of the object, and/or a display form variable of the whole form;
optionally, the display parameters are determined in real time according to the displacement vector and the display form variable, where the display parameters include a display scale and a form distortion amount of the moving object, and further, the display parameters further include a video processing special effect adapted to the display scale and the form distortion amount, and it is understood that the display parameters are display parameters under a current shooting assembly, and when switching of the shooting assembly is involved, the display parameters under the current shooting assembly are switched to display parameters under another shooting assembly.
The method has the advantages that the displacement vector of the moving object is obtained by analyzing the moving state, and the display form variable of the moving object is obtained by analyzing the form of the object; and then, determining the display parameters in real time according to the displacement vector and the display form variable. The humanized video tracking shooting scheme is realized, a shooting hardware foundation and a shooting condition foundation are provided for subsequent video shooting, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the shooting video special effect of the moving object is optimized, and the user experience is enhanced.
Example nine
Based on the above embodiments, the computer program when executed by the processor implements:
analyzing the display parameters to obtain the motion parameters and deformation parameters of the moving object;
presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting component;
adjusting a shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter;
determining the switching time of the shooting components and two groups of shooting component types before and after switching;
determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
In this embodiment, first, the display parameters are analyzed to obtain the motion parameters and the deformation parameters of the moving object; then, presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting assembly; and finally, adjusting the shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter.
Optionally, in this embodiment, the display parameters are analyzed to obtain motion parameters and deformation parameters of the moving object, where the motion parameters and the deformation parameters are used to accurately position a current shooting state of the moving object, that is, to determine a time when the shooting component needs to be switched according to the shooting state and a preset switching trigger condition;
optionally, in this embodiment, the control parameters for controlling the enabling state, the switching state, and the using state of the shooting component are preset, that is, the control parameters for controlling the enabling state, the switching state, and the using state corresponding to one or more of the normal lens, the wide-angle lens, the ultra-wide-angle lens, the telephoto lens, the ultra-telephoto lens, and the zoom lens are preset.
In another embodiment, firstly, the switching time of the shooting components and two groups of shooting component types before and after switching are determined; then, determining corresponding field-crossing transformation according to the types of the two groups of shooting components; and finally, executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
Specifically, for example, when the moving object to be photographed is a moving individual, if the moving individual is relatively close to the photographing device, it is suitable to perform tracking using the main lens, and if the moving individual is already far from the photographing device, the individual photographed by the main lens becomes smaller, and in this case, if the moving object is small, there is a high possibility that a tracking error occurs. Therefore, when a certain condition is met, the zoom lens is switched to the telephoto lens to continue tracking. For example, the moving object detection may be performed while the main camera is turned on to perform video shooting, and background modeling (for example, gaussian background modeling) may be performed before the detection, or the moving object may be manually marked. And tracking the moving target by using a correlation algorithm, and predicting the position of the next frame according to the position of the moving target in the current frame when the finger is tracked. And calculating the radius change trend of the moving object, calculating the proportion R of the width of the moving object in the horizontal direction in the image acquired by the main camera, wherein R1 is the transverse width of the moving object, and R2 is the width of the whole image: then R1/R2, when the moving object gradually moves away from the shooting device and the ratio R of the radius occupied in the image is less than a certain threshold T, then it is determined whether the moving object is within the field angle of the telephoto lens. And if the moving target is judged to be in the field angle of the telephoto lens, switching the lens to the telephoto lens for tracking. Optionally, during the telephoto lens tracking process, the variation trend of the transverse radius of the moving object and the proportion of the radius in the image are also calculated, and if the proportion exceeds a certain threshold value T1, if the moving object is close to the shooting device, the main camera is switched to perform tracking. Optionally, the above steps are continuously cycled until the video shooting is finished.
The method has the advantages that the switching time of the shooting components and the types of the two groups of shooting components before and after switching are determined; then, determining corresponding field-crossing transformation according to the types of the two groups of shooting components; and finally, executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
Example ten
Based on the above embodiment, the present invention further provides a computer readable storage medium, having a video tracking shooting program stored thereon, where the video tracking shooting program, when executed by a processor, implements the steps of the video tracking shooting method as described in any one of the above.
The video tracking shooting method, the video tracking shooting equipment and the computer readable storage medium are implemented by detecting and tracking a moving object in the video shooting process in real time; then, determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters; and finally, switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object. The humanized video tracking shooting scheme is realized, the shooting effect of tracking the moving object by utilizing the multiple shooting assemblies is improved, the shooting operation and the shooting tracking pace of a user are simplified, the special video shooting effect of the moving object is optimized, and the user experience is enhanced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A video tracking capture method, the method comprising:
detecting and tracking a moving object in the video shooting process in real time;
determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
2. The video tracking shooting method according to claim 1, wherein the real-time detection and tracking of the moving object in the video shooting process comprises:
acquiring video preview data, and detecting a shooting object in real time in the video preview data;
determining the moving object according to the moving state of the shooting object in the framing range;
and tracking the moving state and the object form of the moving object.
3. The video tracking shooting method according to claim 2, wherein the determining of the display parameters of the moving object in the current shooting process and the determining of the shooting components corresponding to the display parameters by combining with preset regulation and control parameters comprises:
analyzing the moving state to obtain a displacement vector of the moving object, and simultaneously analyzing the object form to obtain a display form variable of the moving object;
and determining the display parameters in real time according to the displacement vector and the display form variable.
4. The video tracking shooting method according to claim 3, wherein the determining of the display parameters of the moving object in the current shooting process and the determining of the shooting components corresponding to the display parameters in combination with preset regulation and control parameters further comprises:
analyzing the display parameters to obtain the motion parameters and deformation parameters of the moving object;
presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting component;
and adjusting a shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter.
5. The video tracking shooting method according to claim 4, wherein the switching the shooting component in real time according to the tracking track of the moving object for continuous shooting comprises:
determining the switching time of the shooting components and two groups of shooting component types before and after switching;
determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
6. A video tracking camera apparatus, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor performing:
detecting and tracking a moving object in the video shooting process in real time;
determining display parameters of the moving object in the current shooting process, and determining shooting components corresponding to the display parameters by combining preset regulation and control parameters;
and switching the shooting component in real time to carry out continuous shooting according to the tracking track of the moving object.
7. The video tracking camera device of claim 6, wherein the computer program when executed by the processor implements:
acquiring video preview data, and detecting a shooting object in real time in the video preview data;
determining the moving object according to the moving state of the shooting object in the framing range;
and tracking the moving state and the object form of the moving object.
8. The video tracking camera device of claim 7, wherein the computer program when executed by the processor implements:
analyzing the moving state to obtain a displacement vector of the moving object, and simultaneously analyzing the object form to obtain a display form variable of the moving object;
and determining the display parameters in real time according to the displacement vector and the display form variable.
9. The video tracking camera device of claim 8, wherein the computer program when executed by the processor implements:
analyzing the display parameters to obtain the motion parameters and deformation parameters of the moving object;
presetting regulation and control parameters for controlling the starting state, the switching state and the using state of the shooting component;
adjusting a shooting component in the video shooting process in real time according to the regulation and control parameter, the motion parameter and the deformation parameter;
determining the switching time of the shooting components and two groups of shooting component types before and after switching;
determining corresponding field-crossing transformation according to the types of the two groups of shooting components;
and executing the switching operation of the shooting components according to the field-crossing transformation and the switching time in the continuous shooting process.
10. A computer-readable storage medium, characterized in that a video tracking shooting program is stored thereon, which when executed by a processor implements the steps of the video tracking shooting method according to any one of claims 1 to 5.
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