WO2016090829A1 - 图像拍摄方法及装置 - Google Patents

图像拍摄方法及装置 Download PDF

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Publication number
WO2016090829A1
WO2016090829A1 PCT/CN2015/078104 CN2015078104W WO2016090829A1 WO 2016090829 A1 WO2016090829 A1 WO 2016090829A1 CN 2015078104 W CN2015078104 W CN 2015078104W WO 2016090829 A1 WO2016090829 A1 WO 2016090829A1
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WO
WIPO (PCT)
Prior art keywords
shooting
sensitivity
parameter
exposure time
parameters
Prior art date
Application number
PCT/CN2015/078104
Other languages
English (en)
French (fr)
Inventor
冯静敏
葛琦
刘霖
Original Assignee
小米科技有限责任公司
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 小米科技有限责任公司 filed Critical 小米科技有限责任公司
Priority to RU2015126003A priority Critical patent/RU2634323C2/ru
Priority to JP2016563239A priority patent/JP6267363B2/ja
Priority to KR1020157018220A priority patent/KR101712301B1/ko
Priority to MX2015008350A priority patent/MX353273B/es
Priority to BR112015015637A priority patent/BR112015015637A2/pt
Priority to US14/791,678 priority patent/US9723218B2/en
Publication of WO2016090829A1 publication Critical patent/WO2016090829A1/zh

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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
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
    • 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
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/684—Vibration or motion blur correction performed by controlling the image sensor readout, e.g. by controlling the integration time
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly

Definitions

  • the present disclosure relates to the field of photography, and in particular, to an image capturing method and apparatus.
  • the camera function is one of the most frequently used functions for users.
  • Mobile terminals are usually provided with several shooting modes, and the shooting parameters of each shooting mode are relatively fixed. In the process of taking a picture using the mobile terminal, the user can select one of the shooting modes to shoot. However, since the mobile terminal may be in a state of jitter or motion, an image taken after relatively fixed shooting parameters may cause significant smear due to the movement of the mobile terminal.
  • the embodiment of the present disclosure provides an image capturing method and apparatus.
  • the technical solution is as follows:
  • an image capture method comprising:
  • the image is taken according to the shooting parameters of this shot.
  • determining the shooting parameters of the shooting according to the motion parameter including:
  • the shooting environment parameter is an environmental parameter of an environment in which the mobile terminal is located
  • the shooting parameters of the current shooting are determined according to the first shooting parameter and the second shooting parameter.
  • the first shooting parameter includes a first exposure time T1
  • the second shooting parameter includes a second exposure time T2 and an actual sensitivity
  • the shooting parameters of the current shooting are determined according to the first shooting parameter and the second shooting parameter, including:
  • the second exposure time T2 is determined as the exposure time of the current shooting, and the actual sensitivity is determined as the sensitivity of the current shooting;
  • the first exposure time T1 is determined as the exposure time of the current shooting, and the sum of the actual sensitivity and the compensation sensitivity is determined as the sensitivity of the current shooting, and the sensitivity is compensated.
  • the degree is determined by the difference between the first exposure time T1 and the second exposure time T2.
  • the method further includes:
  • the maximum sensitivity is determined as the sensitivity of the current shooting
  • the step of determining the sum of the actual sensitivity and the compensation sensitivity as the sensitivity of the current shooting is performed.
  • calculating the first shooting parameter according to the motion parameter including:
  • the first shooting parameter corresponding to the motion parameter is queried in the first correspondence, and the first correspondence includes at least one set of motion parameters and a first photographing parameter corresponding to each set of motion parameters.
  • calculating the second shooting parameter according to the shooting environment parameter including:
  • an image capturing apparatus comprising:
  • An obtaining module configured to acquire motion parameters of the mobile terminal
  • a determining module configured to determine a shooting parameter of the current shooting according to the motion parameter
  • the shooting module is configured to take an image according to the shooting parameters of the current shooting.
  • the determining module includes:
  • a first calculation submodule configured to calculate a first shooting parameter according to the motion parameter
  • a second calculation submodule configured to calculate a second shooting parameter according to a shooting environment parameter, where the shooting environment parameter is an environment parameter of an environment in which the mobile terminal is located;
  • the determining sub-module is configured to determine the shooting parameters of the current shooting according to the first shooting parameter and the second shooting parameter.
  • the first shooting parameter includes a first exposure time T1
  • the second shooting parameter includes a second exposure time T2 and an actual sensitivity
  • the determining sub-module is configured to determine the second exposure time T2 as the exposure time of the current shooting when the first exposure time T1 is greater than or equal to the second exposure time T2, and determine the actual sensitivity to be the sensitivity of the current shooting. Degree; when the first exposure time T1 is less than the second exposure time T2, the first exposure time T1 is determined to be the current shooting The exposure time, the sum of the actual sensitivity and the compensation sensitivity is determined as the sensitivity of this shot.
  • the device further includes:
  • a maximum detection module configured to detect whether a sum of the actual sensitivity and the compensation sensitivity is greater than a maximum sensitivity of the mobile terminal
  • the maximum determining module is configured to determine the maximum sensitivity to the sensitivity of the current shooting when the maximum detecting module detects that the sum of the actual sensitivity and the compensation sensitivity is greater than the maximum sensitivity of the mobile terminal;
  • the determining sub-module is configured to determine the sum of the actual sensitivity and the compensation sensitivity as the sensitivity of the current shooting when the maximum detection module detects that the sum of the actual sensitivity and the compensation sensitivity is less than the maximum sensitivity of the mobile terminal. degree.
  • the first calculating submodule is configured to query, in the first correspondence, a first shooting parameter corresponding to the motion parameter, where the first correspondence includes at least one set of motion parameters and a corresponding to each group of motion parameters A shooting parameter.
  • the second calculating submodule is configured to query, in the second correspondence, a second shooting parameter corresponding to the shooting environment parameter, where the second correspondence includes at least one set of shooting environment parameters and each set of shooting environment parameters Corresponding second shooting parameters.
  • an image capturing apparatus comprising:
  • a memory for storing executable instructions of the processor
  • processor is configured to:
  • the image is taken based on the shooting parameters of this shot.
  • the image is captured according to the shooting parameters of the current shooting; solving the problem that the movement of the mobile terminal causes a significant smear of the captured photo; the shooting of the shooting is achieved.
  • the parameters are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • FIG. 1 is a flowchart of an image capturing method according to an exemplary embodiment
  • FIG. 2 is a flowchart of an image capturing method according to another exemplary embodiment
  • FIG. 3 is a flowchart of an image capturing method according to another exemplary embodiment
  • FIG. 4 is a block diagram of an image capturing apparatus according to an exemplary embodiment
  • FIG. 5 is a block diagram of an image capturing apparatus according to another exemplary embodiment
  • FIG. 6 is a block diagram of an image capturing apparatus according to an exemplary embodiment.
  • the mobile terminal referred to herein is an electronic device having image capturing capability, and the mobile terminal can be a mobile phone, a tablet computer, an e-book reader, an MP3 player (Moving Picture Experts Group Audio Layer III, a dynamic image expert compressing standard audio layer 3 ), MP4 (Moving Picture Experts Group Audio Layer IV), a player and a laptop portable computer, and the like.
  • MP3 player Moving Picture Experts Group Audio Layer III, a dynamic image expert compressing standard audio layer 3
  • MP4 Moving Picture Experts Group Audio Layer IV
  • player and a laptop portable computer and the like.
  • FIG. 1 is a flowchart of an image capturing method according to an exemplary embodiment.
  • the present embodiment is exemplified by applying the image capturing method to a mobile terminal having image capturing capability.
  • the image capturing method can include the following steps.
  • step 101 motion parameters of the mobile terminal are obtained.
  • step 102 the shooting parameters of the current shooting are determined according to the motion parameters.
  • step 103 an image is taken based on the shooting parameters of the current shooting.
  • the image capturing method determines the shooting parameters of the current shooting according to the motion parameters of the mobile terminal, and captures an image according to the shooting parameters of the current shooting; and solves the motion of the mobile terminal, which may result in the generated photo.
  • the problem of obvious smear; the shooting parameters of this shooting are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • FIG. 2 is a flowchart of an image capturing method according to another exemplary embodiment, which is exemplified by the image capturing method applied to a mobile terminal having image capturing capability.
  • the image capturing method can include the following steps.
  • step 201 motion parameters of the mobile terminal are obtained.
  • a gravitational acceleration sensor such as a gravitational acceleration sensor, a gyro sensor, and an electronic compass sensor are usually provided in the mobile terminal.
  • the mobile terminal acquires its own motion parameters through the built-in sensor.
  • the motion parameter includes at least one of acceleration, line speed, and angular velocity. This motion parameter is used to characterize the motion characteristics of the mobile terminal.
  • step 202 a first shooting parameter is calculated based on the motion parameters.
  • the first shooting parameter may include at least one of an exposure time, an aperture value, and a sensitivity. Since the smear phenomenon is usually caused by the exposure time being too long, in the present embodiment, the first shooting parameter is an exposure time as an example.
  • the first correspondence may be preset in the mobile terminal.
  • the first correspondence includes at least one set of motion parameters and a first photographing parameter corresponding to each set of motion parameters.
  • Table 1 exemplarily shows a first correspondence.
  • the current acceleration is in the acceleration range (v1, v2) Exposure time 11
  • the current acceleration is in the acceleration range (v2, v3) Exposure time 12
  • the current acceleration is in the acceleration range (v3, v4) Exposure time 13
  • the mobile terminal When the mobile terminal acquires the current motion parameter, the mobile terminal queries the first corresponding parameter corresponding to the motion parameter in the first correspondence.
  • the configuration form of the first correspondence relationship is not limited, and the first correspondence relationship may also be implemented by other forms or algorithms.
  • the motion speed of the mobile terminal is negatively correlated with the exposure time, that is, the faster the motion of the mobile terminal is, the shorter the exposure time is; the slower the motion of the mobile terminal is, the longer the exposure time is.
  • step 203 the second shooting parameter is calculated according to the shooting environment parameter.
  • the shooting environment parameter may include at least one of a shooting time, a shooting location, a light intensity value, and a white balance parameter.
  • the mobile terminal can obtain the shooting time through the internal clock, obtain the shooting location through the built-in positioning module, obtain the light intensity value through the light intensity sensor, and obtain the white balance parameter through the white balance sensor.
  • the photographing environment parameter being a light intensity value.
  • the second shooting parameter may include at least one of an exposure time, an aperture value, and a sensitivity. Since the aperture value of the camera in the mobile terminal is usually fixed, the second shooting parameter in this embodiment includes the exposure time and the sense. Luminosity is given as an example.
  • a second correspondence may be preset in the mobile terminal.
  • the second correspondence includes at least one set of shooting environment parameters and a second shooting parameter corresponding to each set of shooting environment parameters.
  • Table 2 exemplarily shows a second correspondence.
  • the current light intensity value is in the light intensity range (d1, d2) Exposure time 21 + actual sensitivity ISO1
  • the current light intensity value is in the light intensity range (d2, d3) Exposure time 22 + actual sensitivity ISO2
  • the current light intensity value is in the light intensity range (d3, d4) Exposure time 23 + actual sensitivity ISO3
  • the mobile terminal When the mobile terminal acquires the current shooting environment parameter, the mobile terminal queries the second corresponding parameter corresponding to the shooting environment parameter in the second correspondence.
  • the embodiment does not limit the form of the second correspondence, and the second correspondence may also be implemented by other forms or algorithms.
  • step 204 the shooting parameters of the current shooting are determined according to the first shooting parameter and the second shooting parameter.
  • the mobile terminal selects a set of shooting parameters from the first shooting parameter and the second shooting parameter as the shooting parameters of the current shooting according to the preset condition.
  • the preset condition may include:
  • the shorter one exposure time is determined as the exposure time of the current shooting. Short exposure times can avoid or mitigate the occurrence of smear.
  • the preset condition may further include: ensuring that the exposure amount of the current shooting is an exposure amount corresponding to the shooting environment parameter.
  • the exposure amount ⁇ * the exposure time in the second shooting parameter * the actual sensitivity in the second shooting parameter, and ⁇ is a preset constant.
  • the exposure amount corresponding to the shooting environment parameters can guarantee the image quality.
  • the step includes the following steps:
  • the mobile terminal detects the magnitude relationship between the first exposure time T1 and the second exposure time T2.
  • the mobile terminal determines the second exposure time T2 as the exposure time of the current shooting, and determines the actual sensitivity to the sensitivity of the current shooting.
  • the mobile terminal determines the first exposure time T1 as the exposure time of the current shooting, and determines the sum of the actual sensitivity and the compensation sensitivity as the sensitivity of the current shooting. degree.
  • the calculation method of the compensation sensitivity is not limited, as long as the exposure amount of the current shooting can be ensured to be the exposure amount corresponding to the shooting environment parameter.
  • step 205 an image is taken based on the shooting parameters of the current shooting.
  • the mobile terminal captures an image based on the shooting parameters of the current shooting. That is, the mobile terminal captures an image based on the exposure time of the current shooting and the sensitivity of the current shooting.
  • the mobile terminal can complete the above steps by itself after the user presses the shutter, and does not require other manual operations of the user.
  • the image capturing method determines the shooting parameters of the current shooting according to the motion parameters of the mobile terminal, and captures an image according to the shooting parameters of the current shooting; and solves the motion of the mobile terminal, which may result in the generated photo.
  • the problem of obvious smear; the shooting parameters of this shooting are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • the image capturing method provided by the embodiment, by selecting the shorter one of the first exposure time T1 and the second exposure time T2 as the exposure time of the current shooting, the occurrence of the smear phenomenon can be avoided or mitigated.
  • the image capturing method provided by the embodiment further increases the compensation sensitivity by selecting the first exposure time T1, thereby ensuring that the exposure amount is the exposure amount corresponding to the shooting environment parameter, and ensuring the imaging quality when the mobile terminal is in the motion state. .
  • FIG. 3 is a flowchart of an image capturing method according to an exemplary embodiment.
  • the present embodiment is exemplified by applying the image capturing method to a mobile terminal having image capturing capability.
  • the image capturing method can include the following steps.
  • step 301 motion parameters of the mobile terminal are obtained.
  • a gravitational acceleration sensor such as a gravitational acceleration sensor, a gyro sensor, and an electronic compass sensor are usually provided in the mobile terminal.
  • the mobile terminal acquires its own motion parameters through the built-in sensor.
  • the motion parameter includes at least one of acceleration, line speed, and angular velocity. This motion parameter is used to characterize the motion characteristics of the mobile terminal.
  • step 302 a first shooting parameter corresponding to the motion parameter is queried in the first correspondence, and the first shooting parameter includes a first exposure time T1.
  • the first correspondence includes at least one set of motion parameters and a first photographing parameter corresponding to each set of motion parameters.
  • Table 1 exemplarily shows a first correspondence.
  • the mobile terminal When the mobile terminal acquires the current motion parameter, the mobile terminal queries the first corresponding parameter corresponding to the motion parameter in the first correspondence.
  • the first shooting parameter includes a first exposure time T1.
  • a shooting environment parameter is acquired, and the shooting environment parameter is an environmental parameter of an environment in which the mobile terminal is located.
  • the shooting environment parameter may include at least one of a shooting time, a shooting location, a light intensity value, and a white balance parameter.
  • the mobile terminal can obtain the shooting time through the internal clock, and obtain the shooting location through the built-in positioning module.
  • the light intensity value is obtained by the light intensity sensor, and the white balance parameter is obtained by the white balance sensor.
  • the photographing environment parameter being a light intensity value.
  • step 304 a second shooting parameter corresponding to the shooting environment parameter is queried in the second correspondence relationship, and the second shooting parameter includes the second exposure time T2 and the actual sensitivity.
  • the second correspondence includes at least one set of shooting environment parameters and a second shooting parameter corresponding to each set of shooting environment parameters.
  • Table 2 exemplarily shows a second correspondence.
  • the mobile terminal When the mobile terminal acquires the current shooting environment parameter, the mobile terminal queries the second corresponding parameter corresponding to the shooting environment parameter in the second correspondence, and the second shooting parameter includes the second exposure time T2 and the actual sensitivity.
  • step 305 it is detected whether the first exposure time T1 is greater than the second exposure time T2.
  • T1 is greater than or equal to T2, then go to step 306; if T1 is less than T2, go to step 307.
  • step 306 when the first exposure time T1 is greater than or equal to the second exposure time T2, the second exposure time T2 is determined as the exposure time of the current shooting, and the actual sensitivity is determined as the sensitivity of the current shooting.
  • step 307 when the first exposure time T1 is less than the second exposure time T2, the first exposure time T1 is determined as the exposure time of the current shooting, and it is detected whether the sum of the actual sensitivity and the compensation sensitivity is greater than that of the mobile terminal. Maximum sensitivity.
  • the mobile terminal determines the first exposure time T1 as the exposure time of the current shooting.
  • the mobile terminal can calculate a compensation sensitivity to the actual photosensitive Degree compensation.
  • This embodiment does not limit the calculation method of the compensation sensitivity.
  • the mobile terminal After calculating the compensation sensitivity, the mobile terminal also detects whether the sum of the actual sensitivity and the compensation sensitivity is greater than the maximum sensitivity supported by the mobile terminal.
  • step 308 is entered.
  • step 309 is entered.
  • step 308 if the sum of the actual sensitivity and the compensation sensitivity is greater than the maximum sensitivity of the mobile terminal, the maximum sensitivity is determined as the sensitivity of the current shooting;
  • step 309 if the sum of the actual sensitivity and the compensated sensitivity is less than the maximum sensitivity of the mobile terminal, the sum of the actual sensitivity and the compensated sensitivity is determined as the sensitivity of the current shooting.
  • step 310 an image is taken based on the shooting parameters of the current shooting.
  • the mobile terminal captures an image based on the shooting parameters of the current shooting. That is, the mobile terminal is exposed according to this shot. The light time and the sensitivity of this shot are taken to capture the image.
  • the mobile terminal can complete the above steps by itself after the user presses the shutter, and does not require other manual operations of the user.
  • the image capturing method determines the shooting parameters of the current shooting according to the motion parameters of the mobile terminal, and captures an image according to the shooting parameters of the current shooting; and solves the motion of the mobile terminal, which may result in the generated photo.
  • the problem of obvious smear; the shooting parameters of this shooting are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • the image capturing method provided by the embodiment, by selecting the shorter one of the first exposure time T1 and the second exposure time T2 as the exposure time of the current shooting, the occurrence of the smear phenomenon can be avoided or mitigated.
  • the image capturing method provided by the embodiment further ensures that when the mobile terminal is in motion, the maximum sensitivity or the sum of the actual sensitivity and the compensation sensitivity is used as the sensitivity of the current shooting when the first exposure time T1 is selected. The quality of the image.
  • the embodiment shown in FIG. 2 and the embodiment shown in FIG. 3 do not limit the calculation method of the compensation sensitivity.
  • the compensation sensitivity in the embodiment shown in FIG. 2 and the embodiment shown in FIG. 3 can be determined by the difference between the first exposure time T1 and the second exposure time T2.
  • the mobile terminal may preset a “difference-compensation sensitivity” table.
  • the mobile terminal obtains the compensation sensitivity by looking up the table.
  • the mobile terminal can calculate the compensation sensitivity in real time.
  • the compensation sensitivity T2 * actual sensitivity / T1 - actual sensitivity.
  • FIG. 4 is a block diagram of an image capturing apparatus, which may be implemented as part or all of a mobile terminal by software, hardware, or a combination of both, according to an exemplary embodiment.
  • the image capture device can include:
  • the obtaining module 420 is configured to acquire motion parameters of the mobile terminal
  • the determining module 440 is configured to determine a shooting parameter of the current shooting according to the motion parameter
  • the shooting module 460 is configured to capture an image according to the shooting parameters of the current shooting.
  • the image capturing apparatus determines the shooting parameters of the current shooting according to the motion parameters of the mobile terminal, and captures an image according to the shooting parameters of the current shooting; and solves the motion guidance of the mobile terminal.
  • the photographs taken have obvious smear problems; the shooting parameters of this shot are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • FIG. 5 is a block diagram of an image capturing apparatus that may be implemented as part or all of a mobile terminal by software, hardware, or a combination of both, according to another exemplary embodiment.
  • the image capture device can include:
  • the obtaining module 420 is configured to acquire motion parameters of the mobile terminal.
  • the determining module 440 is configured to determine a shooting parameter of the current shooting according to the motion parameter.
  • the shooting module 460 is configured to capture an image according to the shooting parameters of the current shooting.
  • the determining module 440 includes:
  • the first calculation sub-module 442 is configured to calculate the first shooting parameter according to the motion parameter.
  • the second calculation sub-module 444 is configured to calculate a second shooting parameter according to the shooting environment parameter, where the shooting environment parameter is an environmental parameter of an environment in which the mobile terminal is located.
  • the determining sub-module 446 is configured to determine the shooting parameters of the current shooting according to the first shooting parameter and the second shooting parameter.
  • the first shooting parameter includes a first exposure time T1
  • the second shooting parameter includes a second exposure time T2 and an actual sensitivity
  • the determining sub-module 446 is further configured to select a set of shooting parameters from the first shooting parameter and the second shooting parameter as the shooting parameters of the current shooting according to the preset condition.
  • the preset condition includes determining a shorter one of the first exposure time T1 and the second exposure time T2 as the exposure time of the current shooting.
  • the determining sub-module 446 is further configured to determine the second exposure time T2 as the exposure time of the current shooting when the first exposure time T1 is greater than or equal to the second exposure time T2, and determine the actual sensitivity to be the current shooting. Sensitivity; when the first exposure time T1 is less than the second exposure time T2, the first exposure time T1 is determined as the exposure time of the current shooting, and the sum of the actual sensitivity and the compensation sensitivity is determined as the sensitivity of the current shooting. degree.
  • the compensation sensitivity is determined by a difference between the first exposure time T1 and the second exposure time T2.
  • the compensation sensitivity T2 * actual sensitivity / T1 - actual sensitivity.
  • the device further includes:
  • the maximum detection module 441 is configured to detect whether the sum of the actual sensitivity and the compensation sensitivity is greater than the mobile terminal Maximum sensitivity
  • the maximum determining module 443 is configured to determine the maximum sensitivity to the sensitivity of the current shooting when the maximum detecting module 441 detects that the sum of the actual sensitivity and the compensation sensitivity is greater than the maximum sensitivity of the mobile terminal;
  • the determining sub-module 446 is configured to determine the sum of the actual sensitivity and the compensation sensitivity as the maximum shooting when the maximum detecting module 441 detects that the sum of the actual sensitivity and the compensation sensitivity is less than the maximum sensitivity of the mobile terminal. Sensitivity.
  • the first calculation sub-module 442 is configured to query, in the first correspondence, a first shooting parameter corresponding to the motion parameter, where the first correspondence relationship includes at least one set of motion parameters and corresponding to each group of motion parameters. First shooting parameters.
  • the second calculating submodule 444 is configured to query, in the second correspondence, a second shooting parameter corresponding to the shooting environment parameter, where the second correspondence includes at least one set of shooting environment parameters and each group of shooting environment parameters Corresponding second shooting parameters.
  • the image capturing apparatus determines the shooting parameters of the current shooting according to the motion parameters of the mobile terminal, and captures an image according to the shooting parameters of the current shooting; and solves the motion of the mobile terminal, which may result in the generated photo.
  • the problem of obvious smear; the shooting parameters of this shooting are set according to the motion parameters of the mobile terminal, and the photographs taken have no smear or reduce the effect of smear.
  • the image capturing apparatus provided in this embodiment can also avoid or reduce the occurrence of the smear phenomenon by selecting the shorter one of the first exposure time T1 and the second exposure time T2 as the exposure time of the current shooting.
  • the image capturing apparatus provided in this embodiment further ensures that when the mobile terminal is in motion, when the first exposure time T1 is selected, the maximum sensitivity or the sum of the actual sensitivity and the compensation sensitivity is used as the sensitivity of the current shooting. The quality of the image.
  • FIG. 6 is a block diagram of an image capture device 600, according to an exemplary embodiment.
  • device 600 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a gaming console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 600 can include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, And a communication component 616.
  • processing component 602 memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, And a communication component 616.
  • Processing component 602 typically controls the overall operation of device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • Processing component 602 can include one or more processors 620 Execution of instructions to complete all or part of the steps of the above method.
  • processing component 602 can include one or more modules to facilitate interaction between component 602 and other components.
  • processing component 602 can include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602.
  • Memory 604 is configured to store various types of data to support operation at device 600. Examples of such data include instructions for any application or method operating on device 600, contact data, phone book data, messages, pictures, videos, and the like.
  • the memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • Power component 606 provides power to various components of device 600.
  • Power component 606 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 600.
  • the multimedia component 608 includes a screen between the device 600 and the user that provides an output interface.
  • the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor may sense not only the boundary of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation.
  • the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 610 is configured to output and/or input an audio signal.
  • audio component 610 includes a microphone (MIC) that is configured to receive an external audio signal when device 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in memory 604 or transmitted via communication component 616.
  • audio component 610 also includes a speaker for outputting an audio signal.
  • the I/O interface 612 provides an interface between the processing component 602 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.
  • Sensor assembly 614 includes one or more sensors for providing device 600 with a status assessment of various aspects.
  • sensor assembly 614 can detect an open/closed state of device 600, a relative positioning of components, such as the display and keypad of device 600, and sensor component 614 can also detect a change in position of one component of device 600 or device 600. , the presence or absence of contact of the user with the device 600, the orientation of the device 600 Or acceleration/deceleration and temperature changes of device 600.
  • Sensor assembly 614 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 614 can also include an acceleration sensor, a gyro sensor, a light intensity sensor, a white balance sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 616 is configured to facilitate wired or wireless communication between device 600 and other devices.
  • the device 600 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • communication component 616 receives broadcast signals or broadcast associated information from an external broadcast management system via a broadcast channel.
  • the communication component 616 also includes a near field communication (NFC) module to facilitate short range communication.
  • NFC near field communication
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • device 600 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component is implemented for performing the image capture method described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component is implemented for performing the image capture method described above.
  • non-transitory computer readable storage medium comprising instructions, such as a memory 604 comprising instructions executable by processor 620 of apparatus 600 to perform the above method.
  • the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.
  • a non-transitory computer readable storage medium that, when executed by a processor of apparatus 600, enables apparatus 600 to perform an image capture method.

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Abstract

本公开是关于一种图像拍摄方法及装置，属于摄影领域。所述方法包括：获取移动终端的运动参数；根据运动参数确定本次拍摄的拍摄参数；根据本次拍摄的拍摄参数拍摄图像。本公开解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。

Description

图像拍摄方法及装置
本申请基于申请号为201410748992.6、申请日为2014年12月09日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及摄影领域，特别涉及一种图像拍摄方法及装置。
背景技术
在诸如智能手机、平板电脑和智能相机之类的移动终端中，拍照功能是用户最常使用的功能之一。
移动终端通常提供有几种拍摄模式，每种拍摄模式的拍摄参数相对固定。在使用移动终端拍照的过程中，用户可以选择其中一种拍摄模式进行拍摄。但是由于移动终端可能处于抖动或运动状态，按照相对固定的拍摄参数拍摄后的图像中，会因为移动终端的运动而产生明显的拖影现象。
发明内容
为了解决移动终端的运动会导致拍摄的照片产生明显的拖影的问题，本公开实施例提供了一种图像拍摄方法及装置。所述技术方案如下：
根据本公开实施例的第一方面，提供一种图像拍摄方法，该方法包括：
获取移动终端的运动参数；
根据运动参数确定本次拍摄的拍摄参数；
根据本次拍摄的拍摄参数拍摄图像。
可选地，根据运动参数确定本次拍摄的拍摄参数，包括：
根据运动参数计算出第一拍摄参数；
根据拍摄环境参数计算出第二拍摄参数，拍摄环境参数是移动终端所处环境的环境参数；
根据第一拍摄参数和第二拍摄参数确定出本次拍摄的拍摄参数。
可选地，第一拍摄参数包括第一曝光时间T1，第二拍摄参数包括第二曝光时间T2和实际感光度；
根据第一拍摄参数和第二拍摄参数确定出本次拍摄的拍摄参数，包括：
在第一曝光时间T1大于等于第二曝光时间T2时，将第二曝光时间T2确定为本次拍摄的曝光时间，将实际感光度确定为本次拍摄的感光度；
在第一曝光时间T1小于第二曝光时间T2时，将第一曝光时间T1确定为本次拍摄的曝光时间，将实际感光度和补偿感光度之和确定为本次拍摄的感光度，补偿感光度由第一曝光时间T1和第二曝光时间T2之间的差值确定。
可选地，该方法，还包括：
检测实际感光度和补偿感光度之和是否大于移动终端的最大感光度；
若实际感光度和补偿感光度之和大于移动终端的最大感光度，则将最大感光度确定为本次拍摄的感光度；
若实际感光度和补偿感光度之和小于移动终端的最大感光度，则执行将实际感光度和补偿感光度之和确定为本次拍摄的感光度的步骤。
可选地，根据运动参数计算出第一拍摄参数，包括：
在第一对应关系中查询与运动参数对应的第一拍摄参数，第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。
可选地，根据拍摄环境参数计算出第二拍摄参数，包括：
在第二对应关系中查询与拍摄环境参数对应的第二拍摄参数，第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。
根据本公开实施例的第二方面，提供了一种图像拍摄装置，该装置包括：
获取模块，被配置为获取移动终端的运动参数；
确定模块，被配置为根据运动参数确定本次拍摄的拍摄参数；
拍摄模块，被配置为根据本次拍摄的拍摄参数拍摄图像。
可选地，该确定模块，包括：
第一计算子模块，被配置为根据运动参数计算出第一拍摄参数；
第二计算子模块，被配置为根据拍摄环境参数计算出第二拍摄参数，拍摄环境参数是移动终端所处环境的环境参数；
本次确定子模块，被配置为根据第一拍摄参数和第二拍摄参数确定出本次拍摄的拍摄参数。
可选地，第一拍摄参数包括第一曝光时间T1，第二拍摄参数包括第二曝光时间T2和实际感光度；
本次确定子模块，被配置为在第一曝光时间T1大于等于第二曝光时间T2时，将第二曝光时间T2确定为本次拍摄的曝光时间，将实际感光度确定为本次拍摄的感光度；在第一曝光时间T1小于第二曝光时间T2时，将第一曝光时间T1确定为本次拍摄 的曝光时间，将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
可选地，该装置，还包括：
最大检测模块，被配置为检测实际感光度和补偿感光度之和是否大于移动终端的最大感光度；
最大确定模块，被配置为当最大检测模块检测出实际感光度和补偿感光度之和大于移动终端的最大感光度时，将最大感光度确定为本次拍摄的感光度；
本次确定子模块，被配置为当最大检测模块检测出实际感光度和补偿感光度之和小于移动终端的最大感光度时，将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
可选地，第一计算子模块，被配置为在第一对应关系中查询与运动参数对应的第一拍摄参数，第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。
可选地，第二计算子模块，被配置为在第二对应关系中查询与拍摄环境参数对应的第二拍摄参数，第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。
根据本公开实施例的第三方面，提供了一种图像拍摄装置，包括：
处理器；
用于存储处理器的可执行指令的存储器；
其中，处理器被配置为：
获取移动终端的运动参数；
根据运动参数确定本次拍摄的拍摄参数；
根据该本次拍摄的拍摄参数拍摄图像。
本公开实施例提供的技术方案可以包括以下有益效果：
通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施 例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种图像拍摄方法的流程图；
图2是根据另一示例性实施例示出的一种图像拍摄方法的流程图；
图3是根据另一示例性实施例示出的一种图像拍摄方法的流程图；
图4是根据一示例性实施例示出的一种图像拍摄装置的框图；
图5是根据另一示例性实施例示出的一种图像拍摄装置的框图；
图6是根据一示例性实施例示出的一种图像拍摄装置的框图。
通过上述附图，已示出本公开明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本公开构思的范围，而是通过参考特定实施例为本领域技术人员说明本公开的概念。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本文中涉及的移动终端是具有图像拍摄能力的电子设备，该移动终端可以是手机、平板电脑、电子书阅读器、MP3播放器(Moving Picture Experts Group Audio Layer III，动态影像专家压缩标准音频层面3)、MP4(Moving Picture Experts Group Audio Layer IV，动态影像专家压缩标准音频层面4)播放器和膝上型便携计算机等等。
图1是根据一示例性实施例示出的一种图像拍摄方法的流程图，本实施例以该图像拍摄方法应用于具有图像拍摄能力的移动终端中来举例说明。该图像拍摄方法可以包括如下几个步骤。
在步骤101中，获取移动终端的运动参数。
在步骤102中，根据运动参数确定本次拍摄的拍摄参数。
在步骤103中，根据本次拍摄的拍摄参数拍摄图像。
综上所述，本实施例提供的图像拍摄方法，通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
图2是根据另一示例性实施例示出的一种图像拍摄方法的流程图，本实施例以该图像拍摄方法应用于具有图像拍摄能力的移动终端中来举例说明。该图像拍摄方法可以包括如下几个步骤。
在步骤201中，获取移动终端的运动参数。
移动终端中通常设置有内置传感器，比如重力加速度传感器、陀螺仪传感器和电子罗盘传感器。
在拍摄照片的过程中，移动终端通过内置传感器获取自身的运动参数。该运动参数包括加速度、线速度和角速度中的至少一种。该运动参数用于表征移动终端的运动特性。
在步骤202中，根据运动参数计算出第一拍摄参数。
第一拍摄参数可以包括：曝光时间、光圈值和感光度中的至少一种。由于拖影现象通常是由曝光时间太长导致的，本实施例中以第一拍摄参数是曝光时间来举例说明。
移动终端中可以预先设置有第一对应关系。该第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。表一示例性地示出了一种第一对应关系。
运动参数 第一拍摄参数
当前加速度处于加速度区间(v1,v2) 曝光时间11
当前加速度处于加速度区间(v2,v3) 曝光时间12
当前加速度处于加速度区间(v3,v4) 曝光时间13
表一
当移动终端获取到当前的运动参数时，移动终端在第一对应关系中查询与该运动参数对应的第一拍摄参数。
需要说明的是，本实施例对第一对应关系的构成形式不加以限定，第一对应关系也可以采用其它形式或算法实现。只要满足移动终端的运动快慢与曝光时间呈负相关关系即可，也即移动终端的运动越快，曝光时间越短；移动终端的运动越慢，曝光时间越长。
在步骤203中，根据拍摄环境参数计算出第二拍摄参数。
拍摄环境参数可以包括：拍摄时间、拍摄地点、光强值和白平衡参数中的至少一种。移动终端可以通过内部时钟获取拍摄时间，通过内置的定位模块获取拍摄地点，通过光强传感器获取光强值，通过白平衡感测器获取白平衡参数。为了简化描述，本实施例以拍摄环境参数是光强值来举例说明。
第二拍摄参数可以包括：曝光时间、光圈值和感光度中的至少一种。由于移动终端中的摄像头的光圈值通常是固定的，本实施例中以第二拍摄参数包括曝光时间和感 光度来举例说明。
移动终端中可以预先设置有第二对应关系。该第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。表二示例性地示出了一种第二对应关系。
拍摄环境参数 第二拍摄参数
当前光强值处于光强值区间(d1,d2) 曝光时间21+实际感光度ISO1
当前光强值处于光强值区间(d2,d3) 曝光时间22+实际感光度ISO2
当前光强值处于光强值区间(d3,d4) 曝光时间23+实际感光度ISO3
表二
当移动终端获取到当前的拍摄环境参数时，移动终端在第二对应关系中查询与该拍摄环境参数对应的第二拍摄参数。
同样的，本实施例对第二对应关系的构成形式不加以限定，第二对应关系也可以采用其它形式或算法实现。
在步骤204中，根据第一拍摄参数和第二拍摄参数确定出本次拍摄的拍摄参数。
移动终端根据预设条件从第一拍摄参数和第二拍摄参数中选择出一组拍摄参数作为本次拍摄的拍摄参数。当第一拍摄参数包括第一曝光时间T1，第二拍摄参数包括第二曝光时间T2和实际感光度时，该预设条件可以包括：
将第一曝光时间T1和第二曝光时间T2中，较短的一个曝光时间确定为本次拍摄的曝光时间。曝光时间短可以避免或减轻拖影现象的发生。
可选地，该预设条件还可以包括：保证本次拍摄的曝光量是与拍摄环境参数所对应的曝光量。在光圈恒定时，曝光量＝α*第二拍摄参数中的曝光时间*第二拍摄参数中的实际感光度，α为预设常量。与拍摄环境参数所对应的曝光量可以保证成像质量。
作为一种可能的实现方式，本步骤包括如下步骤：
第一，移动终端检测第一曝光时间T1和第二曝光时间T2的大小关系。
第二，在第一曝光时间T1大于等于第二曝光时间T2时，移动终端将第二曝光时间T2确定为本次拍摄的曝光时间，将实际感光度确定为本次拍摄的感光度。
第三在第一曝光时间T1小于第二曝光时间T2时，移动终端将第一曝光时间T1确定为本次拍摄的曝光时间，将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
本实施例对补偿感光度的计算方式不做限定，只要能够保证本次拍摄的曝光量是与拍摄环境参数所对应的曝光量即可。
在步骤205中，根据该本次拍摄的拍摄参数拍摄图像。
移动终端根据本次拍摄的拍摄参数拍摄图像。也即，移动终端根据本次拍摄的曝光时间和本次拍摄的感光度来拍摄图像。
移动终端可以在用户按压快门后自行完成上述步骤，不需要用户的其它手动操作。
综上所述，本实施例提供的图像拍摄方法，通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
本实施例提供的图像拍摄方法，还通过选择第一曝光时间T1和第二曝光时间T2中较短的一个曝光时间作为本次拍摄的曝光时间，能够避免或减轻拖影现象的发生。
本实施例提供的图像拍摄方法，还通过在选择第一曝光时间T1时增加补偿感光度，从而保证曝光量是与拍摄环境参数所对应的曝光量，保证了移动终端处于运动状态时的成像质量。
图3是根据一示例性实施例示出的一种图像拍摄方法的流程图，本实施例以该图像拍摄方法应用于具有图像拍摄能力的移动终端中来举例说明。该图像拍摄方法可以包括如下几个步骤。
在步骤301中，获取移动终端的运动参数。
移动终端中通常设置有内置传感器，比如重力加速度传感器、陀螺仪传感器和电子罗盘传感器。
在拍摄照片的过程中，移动终端通过内置传感器获取自身的运动参数。该运动参数包括加速度、线速度和角速度中的至少一种。该运动参数用于表征移动终端的运动特性。
在步骤302中，在第一对应关系中查询与运动参数对应的第一拍摄参数，第一拍摄参数包括第一曝光时间T1。
该第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。表一示例性地示出了一种第一对应关系。
当移动终端获取到当前的运动参数时，移动终端在第一对应关系中查询与该运动参数对应的第一拍摄参数。该第一拍摄参数包括第一曝光时间T1。
在步骤303中，获取拍摄环境参数，拍摄环境参数是移动终端所处环境的环境参数。
拍摄环境参数可以包括：拍摄时间、拍摄地点、光强值和白平衡参数中的至少一种。移动终端可以通过内部时钟获取拍摄时间，通过内置的定位模块获取拍摄地点， 通过光强传感器获取光强值，通过白平衡感测器获取白平衡参数。为了简化描述，本实施例以拍摄环境参数是光强值来举例说明。
在步骤304中，在第二对应关系中查询与拍摄环境参数对应的第二拍摄参数，第二拍摄参数包括第二曝光时间T2和实际感光度。
第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。表二示例性地示出了一种第二对应关系。
当移动终端获取到当前的拍摄环境参数时，移动终端在第二对应关系中查询与该拍摄环境参数对应的第二拍摄参数，第二拍摄参数包括第二曝光时间T2和实际感光度。
在步骤305中，检测第一曝光时间T1是否大于第二曝光时间T2。
如果T1大于等于T2，则进入步骤306；如果T1小于T2，则进入步骤307。
在步骤306中，在第一曝光时间T1大于等于第二曝光时间T2时，将第二曝光时间T2确定为本次拍摄的曝光时间，将实际感光度确定为本次拍摄的感光度。
在步骤307中，在第一曝光时间T1小于第二曝光时间T2时，将第一曝光时间T1确定为本次拍摄的曝光时间，同时检测实际感光度和补偿感光度之和是否大于移动终端的最大感光度。
也即，在第一曝光时间T1小于第二曝光时间T2时，一方面，移动终端将第一曝光时间T1确定为本次拍摄的曝光时间。
另一方面，由于实际感光度是根据当前环境参数和第二曝光时间T2确定的，在选取第一曝光时间T1作为本次拍摄的曝光时间时，移动终端可以计算一补偿感光度来对实际感光度进行补偿。本实施例对补偿感光度的计算方式不做限定。
由于移动终端中的摄像头所支持的感光度存在上限值。在计算出补偿感光度之后，移动终端还检测实际感光度和补偿感光度之和是否大于移动终端所支持的最大感光度。
如果实际感光度和补偿感光度之和大于最大感光度，则进入步骤308。
如果实际感光度和补偿感光度之和大于最大感光度，则进入步骤309。
在步骤308中，若实际感光度和补偿感光度之和大于移动终端的最大感光度，则将最大感光度确定为本次拍摄的感光度；
在步骤309中，若实际感光度和补偿感光度之和小于移动终端的最大感光度，则将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
在步骤310中，根据本次拍摄的拍摄参数拍摄图像。
移动终端根据本次拍摄的拍摄参数拍摄图像。也即，移动终端根据本次拍摄的曝 光时间和本次拍摄的感光度来拍摄图像。
移动终端可以在用户按压快门后自行完成上述步骤，不需要用户的其它手动操作。
综上所述，本实施例提供的图像拍摄方法，通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
本实施例提供的图像拍摄方法，还通过选择第一曝光时间T1和第二曝光时间T2中较短的一个曝光时间作为本次拍摄的曝光时间，能够避免或减轻拖影现象的发生。
本实施例提供的图像拍摄方法，还通过在选择第一曝光时间T1时，采用最大感光度或者实际感光度和补偿感光度之和作为本次拍摄的感光度，保证了移动终端处于运动状态时的成像质量。
需要补充说明的是，虽然图2所示实施例和图3所示实施例均不限定补偿感光度的计算方式。但图2所示实施例和图3所示实施例中的补偿感光度可以由第一曝光时间T1和第二曝光时间T2之间的差值确定。
作为一种可能的实现方式，移动终端可以预先设置一个“差值-补偿感光度”表。在使用第一曝光时间T1作为本次拍摄的曝光时间时，移动终端通过查找该表的方式来得到补偿感光度。
作为另一种可能的实现方式，移动终端可以实时计算补偿感光度。可选地，补偿感光度＝T2*实际感光度/T1-实际感光度。换句话说，曝光量＝α*T2*实际感光度＝α*T1*(实际感光度+补偿感光度)。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图4是根据一示例性实施例示出的一种图像拍摄装置的框图，该文件执行装置可以通过软件、硬件或者两者的结合实现成为移动终端的部分或者全部。该图像拍摄装置可以包括：
获取模块420，被配置为获取移动终端的运动参数；
确定模块440，被配置为根据运动参数确定本次拍摄的拍摄参数；
拍摄模块460，被配置为根据本次拍摄的拍摄参数拍摄图像。
综上所述，本实施例提供的图像拍摄装置，通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导 致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
图5是根据另一示例性实施例示出的一种图像拍摄装置的框图，该文件执行装置可以通过软件、硬件或者两者的结合实现成为移动终端的部分或者全部。该图像拍摄装置可以包括：
获取模块420，被配置为获取移动终端的运动参数。
确定模块440，被配置为根据运动参数确定本次拍摄的拍摄参数。
拍摄模块460，被配置为根据本次拍摄的拍摄参数拍摄图像。
可选地，该确定模块440，包括：
第一计算子模块442，被配置为根据运动参数计算出第一拍摄参数。
第二计算子模块444，被配置为根据拍摄环境参数计算出第二拍摄参数，拍摄环境参数是移动终端所处环境的环境参数。
本次确定子模块446，被配置为根据第一拍摄参数和第二拍摄参数确定出本次拍摄的拍摄参数。
可选地，第一拍摄参数包括第一曝光时间T1，第二拍摄参数包括第二曝光时间T2和实际感光度；
本次确定子模块446，还被配置为根据预设条件从第一拍摄参数和第二拍摄参数中选择出一组拍摄参数作为本次拍摄的拍摄参数。该预设条件包括：将第一曝光时间T1和第二曝光时间T2中，较短的一个曝光时间确定为本次拍摄的曝光时间。该预设条件还可选包括：保证本次拍摄的曝光量是与拍摄环境参数所对应的曝光量。在光圈恒定时，曝光量＝α*第二拍摄参数中的曝光时间*第二拍摄参数中的实际感光度，α为预设常量。
本次确定子模块446，还被配置为在第一曝光时间T1大于等于第二曝光时间T2时，将第二曝光时间T2确定为本次拍摄的曝光时间，将实际感光度确定为本次拍摄的感光度；在第一曝光时间T1小于第二曝光时间T2时，将第一曝光时间T1确定为本次拍摄的曝光时间，将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
可选地，补偿感光度由第一曝光时间T1和第二曝光时间T2之间的差值确定。可选地，补偿感光度＝T2*实际感光度/T1-实际感光度。换句话说，与拍摄环境参数对应的曝光量＝α*T2*实际感光度＝α*T1*(实际感光度+补偿感光度)。
可选地，该装置，还包括：
最大检测模块441，被配置为检测实际感光度和补偿感光度之和是否大于移动终端 的最大感光度；
最大确定模块443，被配置为当最大检测模块441检测出实际感光度和补偿感光度之和大于移动终端的最大感光度时，将最大感光度确定为本次拍摄的感光度；
本次确定子模块446，被配置为当最大检测模块441检测出实际感光度和补偿感光度之和小于移动终端的最大感光度时，将实际感光度和补偿感光度之和确定为本次拍摄的感光度。
可选地，第一计算子模块442，被配置为在第一对应关系中查询与运动参数对应的第一拍摄参数，第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。
可选地，第二计算子模块444，被配置为在第二对应关系中查询与拍摄环境参数对应的第二拍摄参数，第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。
综上所述，本实施例提供的图像拍摄装置，通过根据移动终端的运动参数确定本次拍摄的拍摄参数，根据本次拍摄的拍摄参数拍摄图像；解决了移动终端的运动会导致拍摄的照片产生明显的拖影的问题；达到了本次拍摄的拍摄参数根据移动终端的运动参数设定，拍摄的照片没有拖影或减少拖影的效果。
本实施例提供的图像拍摄装置，还通过选择第一曝光时间T1和第二曝光时间T2中较短的一个曝光时间作为本次拍摄的曝光时间，能够避免或减轻拖影现象的发生。
本实施例提供的图像拍摄装置，还通过在选择第一曝光时间T1时，采用最大感光度或者实际感光度和补偿感光度之和作为本次拍摄的感光度，保证了移动终端处于运动状态时的成像质量。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图6是根据一示例性实施例示出的一种图像拍摄装置600的框图。例如，装置600可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图6，装置600可以包括以下一个或多个组件：处理组件602，存储器604，电源组件606，多媒体组件608，音频组件610，输入/输出(I/O)的接口612，传感器组件614，以及通信组件616。
处理组件602通常控制装置600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件602可以包括一个或多个处理器620来 执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件602可以包括一个或多个模块，便于处理组件602和其他组件之间的交互。例如，处理组件602可以包括多媒体模块，以方便多媒体组件608和处理组件602之间的交互。
存储器604被配置为存储各种类型的数据以支持在装置600的操作。这些数据的示例包括用于在装置600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件606为装置600的各种组件提供电力。电源组件606可以包括电源管理系统，一个或多个电源，及其他与为装置600生成、管理和分配电力相关联的组件。
多媒体组件608包括在所述装置600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件608包括一个前置摄像头和/或后置摄像头。当装置600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件610被配置为输出和/或输入音频信号。例如，音频组件610包括一个麦克风(MIC)，当装置600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器604或经由通信组件616发送。在一些实施例中，音频组件610还包括一个扬声器，用于输出音频信号。
I/O接口612为处理组件602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件614包括一个或多个传感器，用于为装置600提供各个方面的状态评估。例如，传感器组件614可以检测到装置600的打开/关闭状态，组件的相对定位，例如所述组件为装置600的显示器和小键盘，传感器组件614还可以检测装置600或装置600一个组件的位置改变，用户与装置600接触的存在或不存在，装置600方位 或加速/减速和装置600的温度变化。传感器组件614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件614还可以包括加速度传感器，陀螺仪传感器，光强传感器、白平衡感测器、磁传感器，压力传感器或温度传感器。
通信组件616被配置为便于装置600和其他设备之间有线或无线方式的通信。装置600可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件616还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置600可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述图像拍摄方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器604，上述指令可由装置600的处理器620执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
一种非临时性计算机可读存储介质，当所述存储介质中的指令由装置600的处理器执行时，使得装置600能够执行一种图像拍摄方法。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种图像拍摄方法，其特征在于，所述方法包括：
    获取移动终端的运动参数；
    根据所述运动参数确定本次拍摄的拍摄参数；
    根据所述本次拍摄的拍摄参数拍摄图像。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述运动参数确定本次拍摄的拍摄参数，包括：
    根据所述运动参数计算出第一拍摄参数；
    根据拍摄环境参数计算出第二拍摄参数，所述拍摄环境参数是所述移动终端所处环境的环境参数；
    根据所述第一拍摄参数和所述第二拍摄参数确定出所述本次拍摄的拍摄参数。
  3. 根据权利要求2所述的方法，其特征在于，所述第一拍摄参数包括第一曝光时间T1，所述第二拍摄参数包括第二曝光时间T2和实际感光度；
    所述根据所述第一拍摄参数和所述第二拍摄参数确定出所述本次拍摄的拍摄参数，包括：
    在所述第一曝光时间T1大于等于所述第二曝光时间T2时，将所述第二曝光时间T2确定为所述本次拍摄的曝光时间，将所述实际感光度确定为所述本次拍摄的感光度；
    在所述第一曝光时间T1小于所述第二曝光时间T2时，将所述第一曝光时间T1确定为所述本次拍摄的曝光时间，将所述实际感光度和补偿感光度之和确定为所述本次拍摄的感光度。
  4. 根据权利要求3所述的方法，其特征在于，所述方法，还包括：
    检测所述实际感光度和所述补偿感光度之和是否大于所述移动终端的最大感光度；
    若所述实际感光度和所述补偿感光度之和大于所述移动终端的最大感光度，则将所述最大感光度确定为所述本次拍摄的感光度；
    若所述实际感光度和所述补偿感光度之和小于所述移动终端的最大感光度，则执行所述将所述实际感光度和补偿感光度之和确定为所述本次拍摄的感光度的步骤。
  5. 根据权利要求2至4任一所述的方法，其特征在于，所述根据所述运动参数计算出第一拍摄参数，包括：
    在第一对应关系中查询与所述运动参数对应的第一拍摄参数，所述第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。
  6. 根据权利要求2至4任一所述的方法，其特征在于，所述根据拍摄环境参数计算出第二拍摄参数，包括：
    在第二对应关系中查询与所述拍摄环境参数对应的第二拍摄参数，所述第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。
  7. 一种图像拍摄装置，其特征在于，所述装置包括：
    获取模块，被配置为获取移动终端的运动参数；
    确定模块，被配置为根据所述运动参数确定本次拍摄的拍摄参数；
    拍摄模块，被配置为根据所述本次拍摄的拍摄参数拍摄图像。
  8. 根据权利要求7所述的装置，其特征在于，所述确定模块，包括：
    第一计算子模块，被配置为根据所述运动参数计算出第一拍摄参数；
    第二计算子模块，被配置为根据拍摄环境参数计算出第二拍摄参数，所述拍摄环境参数是所述移动终端所处环境的环境参数；
    本次确定子模块，被配置为根据所述第一拍摄参数和所述第二拍摄参数确定出所述本次拍摄的拍摄参数。
  9. 根据权利要求8所述的装置，其特征在于，所述第一拍摄参数包括第一曝光时间T1，所述第二拍摄参数包括第二曝光时间T2和实际感光度；
    所述本次确定子模块，被配置为在所述第一曝光时间T1大于等于所述第二曝光时间T2时，将所述第二曝光时间T2确定为所述本次拍摄的曝光时间，将所述实际感光度确定为所述本次拍摄的感光度；在所述第一曝光时间T1小于所述第二曝光时间T2时，将所述第一曝光时间T1确定为所述本次拍摄的曝光时间，将所述实际感光度和补偿感光度之和确定为所述本次拍摄的感光度。
  10. 根据权利要求9所述的装置，其特征在于，所述装置，还包括：
    最大检测模块，被配置为检测所述实际感光度和所述补偿感光度之和是否大于所 述移动终端的最大感光度；
    最大确定模块，被配置为当所述最大检测模块检测出所述实际感光度和所述补偿感光度之和大于所述移动终端的最大感光度时，将所述最大感光度确定为所述本次拍摄的感光度；
    所述本次确定子模块，被配置为当所述最大检测模块检测出所述实际感光度和所述补偿感光度之和小于所述移动终端的最大感光度时，将所述实际感光度和补偿感光度之和确定为所述本次拍摄的感光度。
  11. 根据权利要求8至10任一所述的装置，其特征在于，所述第一计算子模块，被配置为在第一对应关系中查询与所述运动参数对应的第一拍摄参数，所述第一对应关系包括至少一组运动参数和与每组运动参数所对应的第一拍摄参数。
  12. 根据权利要求8至10任一所述的装置，其特征在于，所述第二计算子模块，被配置为在第二对应关系中查询与所述拍摄环境参数对应的第二拍摄参数，所述第二对应关系包括至少一组拍摄环境参数和与每组拍摄环境参数所对应的第二拍摄参数。
  13. 一种图像拍摄装置，其特征在于，包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    获取移动终端的运动参数；
    根据所述运动参数确定本次拍摄的拍摄参数；
    根据所述本次拍摄的拍摄参数拍摄图像。
PCT/CN2015/078104 2014-12-09 2015-04-30 图像拍摄方法及装置 WO2016090829A1 (zh)

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