WO2017076042A1 - 防抖拍照方法、装置及移动终端 - Google Patents

防抖拍照方法、装置及移动终端 Download PDF

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Publication number
WO2017076042A1
WO2017076042A1 PCT/CN2016/089026 CN2016089026W WO2017076042A1 WO 2017076042 A1 WO2017076042 A1 WO 2017076042A1 CN 2016089026 W CN2016089026 W CN 2016089026W WO 2017076042 A1 WO2017076042 A1 WO 2017076042A1
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photo
steady state
photos
mobile terminal
relative
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PCT/CN2016/089026
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English (en)
French (fr)
Inventor
赵雪峰
王文峰
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乐视控股（北京）有限公司
乐视移动智能信息技术（北京）有限公司
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Publication of WO2017076042A1 publication Critical patent/WO2017076042A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • 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

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  • the embodiments of the present invention relate to the field of mobile terminal technologies, and in particular, to an anti-shake photographing method, device, and mobile terminal.
  • optical image stabilization requires the use of a dedicated motor that supports optical image stabilization, resulting in an increase in the size and cost of the camera module in the digital camera, and a significant increase in power consumption during use.
  • the embodiment of the present application provides an anti-shake photographing method, device, and mobile terminal, so as to reduce the size, cost, and power consumption of the camera module in the digital camera.
  • the embodiment of the present application provides an anti-shake photographing method, comprising: pre-shooting a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter when receiving a photographing instruction; And displaying the first photo with the highest definition in the first photo as an alternative photo; if the relative sharpness of the candidate photo relative to the second photo is greater than a relative sharpness threshold, outputting the candidate a photo; if the relative sharpness of the alternative photo is equal to or less than the relative sharpness threshold, the second photo is output.
  • an embodiment of the present application provides an anti-shake photographing apparatus, including: pre-shooting a module, configured to pre-shoot a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter when receiving a photographing instruction; and a selecting module for selecting a plurality of the first photos to be clear
  • the first photo of the highest degree is used as an alternative photo; the first output module is configured to output the candidate photo if the relative sharpness of the candidate photo relative to the second photo is greater than a relative sharpness threshold
  • a second output module configured to output the second photo if the relative sharpness of the candidate photo is equal to or smaller than the relative sharpness threshold.
  • an embodiment of the present application provides a mobile terminal, including the anti-shake photographing apparatus as described above.
  • an embodiment of the present application provides an anti-shake photographing apparatus, including a memory, one or more processors, and one or more programs, wherein the one or more programs are processed by the one or more
  • the following operations are performed: when receiving the photographing instruction, pre-shooting the first photo under the normal exposure parameter and the second photo under the quick exposure parameter; selecting the plurality of the first photo in the sharpness The highest of the first photos as an alternative photo; if the relative sharpness of the alternate photo relative to the second photo is greater than a relative sharpness threshold, outputting the alternate photo; The relative sharpness is equal to or less than the relative sharpness threshold, and the second photo is output.
  • an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores computer executable instructions, wherein the computer executable instructions cause an anti-shake photographing device to perform an operation in response to execution.
  • the operation includes: pre-shooting a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter when receiving a photographing instruction; selecting the plurality of the highest resolution in the first photo a first photo as an alternative photo; if the relative sharpness of the alternate photo relative to the second photo is greater than a relative sharpness threshold, outputting the alternate photo; if the relative photo of the alternate photo is relatively clear The degree is equal to or less than the relative sharpness threshold, and the second photo is output.
  • the anti-shake photographing method, device and mobile terminal pre-shoot a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter, and according to the plurality of first photos Highest resolution, selective output
  • the first photo or the second photo with the highest definition is based on software to realize the anti-shake camera function, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 1 is a schematic flowchart of an embodiment of an anti-shake photographing method according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of still another embodiment of an anti-shake photographing method according to an embodiment of the present application
  • FIG. 3 is a schematic flow chart of a possible implementation manner of the anti-shake photographing method of the embodiment shown in FIG. 2;
  • FIG. 4 is a schematic structural diagram of an embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of still another embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an embodiment of a mobile terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of an embodiment of a computer program product for anti-shake photographing according to an embodiment of the present application.
  • FIG. 1 is a schematic flowchart diagram of an embodiment of an anti-shake photographing method according to an embodiment of the present application.
  • the anti-shake photographing method of the embodiment of the present application can be applied to various mobile terminals (such as mobile phones, tablet computers, etc.) having a photographing function.
  • the anti-shake photographing method of the embodiment of the present application may specifically include:
  • Exposure parameters include exposure values, exposure time, gain, and the like.
  • the normal exposure parameter is the exposure parameter adjusted in the automatic exposure mode.
  • the quick exposure parameter is the corresponding exposure parameter when the exposure time is reduced based on the normal exposure parameter without changing the exposure value, which can be set manually.
  • the photo with the highest definition is selected from the plurality of first photos taken under the normal exposure parameters as an alternative photo.
  • the relative sharpness threshold is 0.8 and the relative sharpness of the alternative photo relative to the second photo taken under the fast exposure parameter is 0.9, the relative sharpness of the alternative photo relative to the second photo is greater than the relative sharpness.
  • the threshold is 0.8, and the alternate photo is output as the final result photo, and the user can save or delete the output photo as needed.
  • the relative sharpness threshold is 0.8 and the relative sharpness of the alternative photo relative to the second photo taken under the fast exposure parameter is 0.7
  • the relative sharpness of the alternative photo relative to the second photo is less than 0.7.
  • the threshold value is 0.8, and the second photo taken under the quick exposure parameter is output as the final result photo, and the user can save or delete the output photo as needed.
  • the alternative photo is selected as the final result photo output; when the normal exposure parameter is taken When the sharpness of the alternative photo and the sharpness of the second photo taken under the fast exposure parameter are better, the second photo with higher definition is selected as the final result photo output.
  • the second photo may be noise-reduced to avoid noise. Interference and improve accuracy.
  • the above method is used to selectively output an alternative photo or a second photo, so that the output image anti-shake effect is ideal and the resolution is good.
  • the anti-shake photographing method of the embodiment of the present application pre-shoots a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter, and according to the clarity of the highest-definition photos in the plurality of first photos Degree, the first photo or the second photo with the highest output resolution, the anti-shake camera function is realized based on the software, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 2 is a schematic flowchart diagram of still another embodiment of an anti-shake photographing method according to an embodiment of the present application.
  • the anti-shake photographing method of the embodiment of the present application can be applied to various mobile terminals (such as mobile phones, tablet computers, etc.) having a photographing function.
  • the anti-shake photographing method of the embodiment of the present invention is a possible implementation manner of the anti-shake photographing method of the embodiment shown in FIG.
  • steps S201 and S202 add a step of determining the steady state of the mobile terminal based on step S101 in the embodiment shown in FIG. 1.
  • the steady state of the mobile terminal is within the steady state threshold range (the steady state is neither too stable nor too unstable)
  • the pre-shooting operation and the subsequent anti-shake processing are performed.
  • the steady state of the mobile terminal is too stable, for example, when the mobile terminal is fixed by using a tripod, there is almost no jitter, so that anti-shake processing is not required, and normal shooting can be performed, thereby avoiding unnecessary shooting time.
  • the steady state of the mobile terminal is too unstable, for example, when the shaking of the mobile terminal is too large, the jitter is too obvious, which is beyond the range of the anti-shake processing of the embodiment of the present application. Therefore, the anti-shake processing is not required, and the normal shooting can be performed. Avoid the meaningless anti-shake process. At this time, you can also prompt the mobile terminal to shake on the user interface.
  • the method includes: obtaining stable state data of the mobile terminal; calculating a stability value of the mobile terminal according to the stable state data; and determining a steady state of the mobile terminal according to the stability value.
  • the steady state data of the mobile terminal may specifically include accelerometer data acquired from an accelerometer of the mobile terminal and/or gyroscope data acquired from a gyroscope of the mobile terminal.
  • the step S202 may specifically include: if the stability value is within the stability threshold range, pre-shooting the first photo under the plurality of normal exposure parameters and the second photo under the one quick exposure parameter.
  • step S201 before determining the steady state of the mobile terminal, the step of determining the exposure time may be further included, and selecting the light condition suitable for the anti-shake processing of the embodiment of the present application may specifically include: acquiring exposure time data; When the data is within the exposure time threshold, the steady state of the mobile terminal is judged.
  • the exposure time data adjusted in the automatic exposure mode at the current preview when the exposure time data is within the exposure time threshold range (the exposure time is neither too long nor too short, for example, 1/100 second to 1/30 second) For example, when the exposure time is 1/60 second, the operation of judging the steady state of the mobile terminal and the subsequent pre-shooting operation and the anti-shake processing process when the steady state satisfies the condition are performed.
  • the exposure time is too short, for example, when the exposure time is less than 1/100 second, the jitter situation can be neglected, so no anti-shake processing is required, and normal shooting can be performed, thereby avoiding unnecessary shooting time.
  • the exposure time is too long, for example, when the exposure time is greater than 1/30 second, since the range of the anti-shake processing capability of the embodiment of the present application is exceeded, the anti-shake processing is not required, and the normal shooting can be performed, thereby avoiding meaningless prevention. Shake the process.
  • the method before pre-shooting the first photo under the plurality of normal exposure parameters and the second photo under the fast exposure parameter, the method further includes: starting the burst Burst photographing mode; setting the fast exposure parameter (for example, When the normal exposure time is 1/60 second, set the fast exposure time to 1/100 second, and increase the gain while keeping the exposure value unchanged.
  • the fast exposure parameter for example, When the normal exposure time is 1/60 second, set the fast exposure time to 1/100 second, and increase the gain while keeping the exposure value unchanged.
  • a continuous shooting operation is performed, and a plurality of first photos under normal exposure parameters and a second photo under multiple quick exposure parameters are continuously taken, and multiple (for example, three) are selected from the normal ones.
  • the first photo under the exposure parameter and the second photo cache under a quick exposure parameter.
  • Step S102 in the embodiment shown in FIG. 1 may specifically include the following steps S203 and S204:
  • S203 Calculate relative sharpness of the plurality of first photos relative to the second photo, respectively.
  • the first photo with a relative sharpness of 0.9 is taken as an alternative photo.
  • step S103 For details, refer to the related description in step S103 in the embodiment shown in FIG. 1 , and details are not described herein again.
  • step S104 For details, refer to the related description in step S104 in the embodiment shown in FIG. 1 , and details are not described herein again.
  • FIG. 3 is a flow chart showing a feasible implementation manner of the anti-shake photographing method of the embodiment shown in FIG. As shown in Figure 3, it includes:
  • step S304 Determine whether the exposure time data is less than the threshold 1. If yes, go to step S305; if no, go to step S306.
  • the threshold 1 may be specifically 1/100 second.
  • step S306. Determine whether the exposure time data is less than the threshold 2. If yes, go to step S308; if no, go to step S307.
  • the threshold 2 is greater than the threshold 1, and may be 1/30 second.
  • step S309 Determine a steady state of the mobile terminal. If the steady state is good, perform the steps. S305; if the steady state is poor, step S307 is performed; if the steady state is within the steady state threshold range, step S310 is performed.
  • step S315. Determine whether the relative sharpness of the candidate photo is greater than a relative sharpness threshold. If yes, go to step S316; if no, go to step S317.
  • the relative sharpness threshold may be 0.8.
  • the anti-shake photographing method of the embodiment of the present application pre-shoots a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter, and according to the clarity of the highest-definition photos in the plurality of first photos Degree, the first photo or the second photo with the highest output resolution, the anti-shake camera function is realized based on the software, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 4 is a schematic structural diagram of an embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • the anti-shake photographing apparatus of the embodiment of the present application can be disposed in various mobile terminals (such as mobile phones, tablet computers, etc.) having a photographing function, and the anti-shake photographing method of the embodiment shown in FIG. 1 is performed.
  • the anti-shake photographing apparatus of the embodiment of the present application may specifically include a pre-shooting module 41, a selection module 42, a first output module 43, and a second output module 44. among them:
  • the pre-shooting module 41 is configured to pre-shoot a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter when receiving the photographing instruction.
  • the selecting module 42 is configured to select the first photo with the highest definition among the plurality of first photos as the alternative photo.
  • the first output module 43 is configured to output an alternate photo if the relative sharpness of the candidate photo relative to the second photo is greater than the relative sharpness threshold.
  • the second output module 44 is configured to output the second photo if the relative resolution of the candidate photo is equal to or less than the relative sharpness threshold.
  • the anti-shake photographing device of the embodiment of the present application pre-shoots a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter, and according to the clarity of the highest-definition photos in the plurality of first photos Degree, the first photo or the second photo with the highest output resolution, the anti-shake camera function is realized based on the software, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 5 is a schematic structural diagram of still another embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • the anti-shake photographing apparatus of the embodiment of the present application can be disposed in various mobile terminals (such as mobile phones, tablet computers, etc.) having a photographing function, and the anti-shake photographing method of the embodiment shown in FIG. 2 is executed.
  • the anti-shake photographing device of the embodiment of the present invention is based on the embodiment shown in FIG. 4, and the pre-shooting module 41 may specifically include a judging sub-module 51 and a pre-shooting sub-module 52.
  • the determining sub-module 51 is configured to determine a steady state of the mobile terminal when receiving the photographing instruction.
  • the pre-shooting sub-module 52 is configured to pre-shoot a plurality of first photos and a second photo if the steady state is within a steady state threshold range.
  • the determining sub-module 51 may specifically include: an acquiring unit, configured to acquire steady state data of the mobile terminal when receiving the photographing instruction; and a calculating unit, configured to calculate a stability value of the mobile terminal according to the steady state data; And used to judge the steady state of the mobile terminal according to the stability value.
  • the pre-shooting sub-module 52 is specifically configured to pre-take a plurality of first photos and a second photo if the stability value is within a stability threshold range.
  • the steady state data includes accelerometer data and/or gyroscope data.
  • the determining sub-module 51 may specifically include: an exposure time acquiring unit, configured to acquire exposure time data when receiving the photographing instruction; and a steady state determining unit, configured to determine, if the exposure time data is within the exposure time threshold range, The steady state of the mobile terminal.
  • the pre-shooting module 41 can also be used to pre-shoot a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter: start a burst Burst photographing mode; set a quick exposure parameter.
  • the selection module 42 may specifically include a calculation sub-module 53 and a selection sub-module 54.
  • the calculation sub-module 53 is configured to calculate the relative sharpness of the plurality of first photos with respect to the second photo, respectively.
  • the sub-module 54 is selected for selecting the first photo with the highest relative definition as the alternative photo.
  • the second output module 44 is further configured to: perform noise reduction processing on the second photo before outputting the second photo.
  • the anti-shake photographing device of the embodiment of the present application pre-shoots a plurality of first photos under normal exposure parameters and a second photo under a quick exposure parameter, and according to the clarity of the highest-definition photos in the plurality of first photos Degree, the first photo or the second photo with the highest output resolution, the anti-shake camera function is realized based on the software, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 6 is a schematic structural diagram of an embodiment of a mobile terminal according to an embodiment of the present disclosure.
  • the mobile terminal of the embodiment of the present application may specifically be a mobile terminal having a camera function (such as a mobile phone, a tablet computer, etc.), and may perform the anti-shake camera of the embodiment shown in FIG. 1 or FIG. 2 . law.
  • the mobile terminal 61 of the embodiment of the present application includes the anti-shake photographing device 62 of the embodiment shown in FIG. 4 or FIG.
  • the mobile terminal of the embodiment of the present application pre-shoots a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter, and according to the definition of the highest-definition photo in the plurality of first photos, The first photo or the second photo with the highest output resolution is selected, and the anti-shake photographing function is implemented based on the software, which reduces the size of the camera module in the digital camera, reduces the cost, and consumes power during use.
  • FIG. 7 is a schematic structural diagram of still another embodiment of an anti-shake photographing apparatus according to an embodiment of the present application.
  • the anti-shake photographing apparatus of the embodiment of the present application includes a memory 71, one or more processors 72, and one or more programs 73.
  • the one or more programs 73 when executed by one or more processors 72, perform any of the above-described embodiments.
  • the anti-shake photographing device pre-shoots a plurality of first photos under normal exposure parameters and a second photo under a fast exposure parameter, and according to the highest-definition photos in the plurality of first photos
  • the first photo or the second photo with the highest resolution and selective output resolution, the anti-shake camera function is realized based on the software, which reduces the size of the camera module in the digital camera, reduces the cost and power consumption during use.
  • FIG. 8 is a schematic structural diagram of an embodiment of a computer program product for anti-shake photographing according to an embodiment of the present application.
  • the computer program product 81 for anti-shake photographing of the embodiment of the present application may include a signal bearing medium 82.
  • Signal bearing medium 82 may include one or more instructions 83 that, when executed by, for example, a processor, may provide the functionality described above with respect to Figures 1-6.
  • the instruction 83 can be packaged Included: one or more instructions for pre-shooting a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter when receiving a photo instruction; for selecting a plurality of the first The first photo of the highest resolution in the photo as one or more instructions of the alternate photo; for outputting if the relative sharpness of the alternate photo relative to the second photo is greater than a relative sharpness threshold One or more instructions of the alternate photo; and for outputting the second photo if the relative sharpness of the alternate photo is equal to or less than the relative sharpness threshold.
  • the anti-shake camera device can perform one or more of the steps shown in FIG. 1 in response to the instruction 83.
  • signal bearing medium 82 can include computer readable media 84 such as, but not limited to, a hard disk drive, a compact disk (CD), a digital versatile disk (DVD), a digital tape, a memory, and the like.
  • the signal bearing medium 82 can include a recordable medium 85 such as, but not limited to, a memory, a read/write (R/W) CD, an R/W DVD, and the like.
  • the signal bearing medium 82 can include a communication medium 86 such as, but not limited to, a digital and/or analog communication medium (eg, fiber optic cable, waveguide, wired communication link, wireless communication link, etc.).
  • the computer program product 81 can be transmitted by the RF signal bearing medium 82 to one or more modules of the identification device of the multi-finger swipe gesture, wherein the signal bearing medium 82 is comprised of a wireless communication medium (eg, wireless compliant with the IEEE 802.11 standard) Communication medium) transmission.
  • a wireless communication medium eg, wireless compliant with the IEEE 802.11 standard
  • the computer program product of the embodiment of the present application pre-shoots a first photo under a plurality of normal exposure parameters and a second photo under a quick exposure parameter, and according to the definition of the highest-definition photo in the plurality of first photos
  • the first photo or the second photo with the highest output resolution is selectively output, and the anti-shake photographing function is implemented based on the software, which reduces the size of the camera module in the digital camera, reduces the cost, and consumes power during use.

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Abstract

本申请实施例提供了一种防抖拍照方法、装置及移动终端。该方法包括：当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；选择多张第一照片中清晰度最高的第一照片作为备选照片；若备选照片相对于第二照片的相对清晰度大于相对清晰度阈值，则输出备选照片；若备选照片的相对清晰度等于或者小于相对清晰度阈值，则输出第二照片。本申请实施例提供的防抖拍照方法、装置及移动终端，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。

Description

防抖拍照方法、装置及移动终端
本专利申请要求申请日为2015年11月6日、申请号为2015107581397的中国专利申请的优先权，并将上述专利申请以引用的方式全文引入本文中。
技术领域
本申请实施例涉及移动终端技术领域，尤其涉及一种防抖拍照方法、装置及移动终端。
背景技术
随着手机、平板电脑等智能移动终端的普及率越来越高，移动终端中的拍照功能得到广泛应用。拍照过程中的防抖处理直接影响到拍摄的照片的效果。
目前，针对移动终端上的数码相机的防抖技术有多种，主要包括光学防抖等。但光学防抖需要使用专门的支持光学防抖功能的马达，导致数码相机中的摄像头模组体积增大、成本增加，且使用时的功耗也大幅增加。
发明内容
本申请实施例提供一种防抖拍照方法、装置及移动终端，以减小数码相机中摄像头模组的体积、降低成本和使用时的功耗。
为达到上述目的，本申请实施例采用如下技术方案：
一方面，本申请实施例提供一种防抖拍照方法，包括：当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
另一方面，本申请实施例提供一种防抖拍照装置，包括：预拍摄 模块，用于当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；选择模块，用于选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；第一输出模块，用于若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；第二输出模块，用于若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
另一方面，本申请实施例提供一种移动终端，包括如上所述的防抖拍照装置。
另一方面，本申请实施例提供一种防抖拍照装置，包括存储器、一个或多个处理器以及一个或多个程序，其中，所述一个或多个程序在由所述一个或多个处理器执行时执行下述操作：当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
另一方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机可执行指令，所述计算机可执行指令响应于执行使得防抖拍照装置执行操作，所述操作包括：当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
本申请实施例提供的防抖拍照方法、装置及移动终端，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出 清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
附图说明
图1为本申请实施例提供的防抖拍照方法一个实施例的流程示意图；
图2为本申请实施例提供的防抖拍照方法又一个实施例的流程示意图；
图3为图2所示实施例的防抖拍照方法一种可行实施方式的流程示意图；
图4为本申请实施例提供的防抖拍照装置一个实施例的结构示意图；
图5为本申请实施例提供的防抖拍照装置又一个实施例的结构示意图；
图6为本申请实施例提供的移动终端一个实施例的结构示意图；
图7为本申请实施例提供的防抖拍照装置的又一个实施例的结构示意图；
图8为本申请实施例提供的用于防抖拍照的计算机程序产品一个实施例的结构示意图。
具体实施方式
下面结合附图对本申请实施例的防抖拍照方法、装置及移动终端进行详细描述。
实施例一
图1为本申请实施例提供的防抖拍照方法一个实施例的流程示意图。本申请实施例的防抖拍照方法可应用于各种具有拍照功能的移动终端(例如手机、平板电脑等)中。如图1所示，本申请实施例的防抖拍照方法具体可包括：
S101，当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片。
具体的，当相机应用开启后，拍照开始，用户按下快门，锁定自动曝光/自动对焦后发出拍照指令。曝光参数包括曝光值、曝光时间和增益等。正常曝光参数即自动曝光模式下调整的曝光参数，快速曝光参数即基于正常曝光参数在曝光值不变的情况下减小曝光时间时对应的曝光参数，可人为设置。
S102，选择多张第一照片中清晰度最高的第一照片作为备选照片。
具体的，从正常曝光参数下拍摄的多张第一照片中选择出清晰度最高的那张照片作为备选照片。
S103，若备选照片相对于第二照片的相对清晰度大于相对清晰度阈值，则输出备选照片。
具体的，假设相对清晰度阈值为0.8，备选照片相对于快速曝光参数下拍摄的第二照片的相对清晰度为0.9，则备选照片相对于第二照片的相对清晰度0.9大于相对清晰度阈值0.8，将备选照片作为最后的成果照片输出，用户可根据需要保存或删除输出的照片。
S104，若备选照片的相对清晰度等于或者小于相对清晰度阈值，则输出第二照片。
具体的，假设相对清晰度阈值为0.8，备选照片相对于快速曝光参数下拍摄的第二照片的相对清晰度为0.7，则备选照片相对于第二照片的相对清晰度0.7小于相对清晰度阈值0.8，将快速曝光参数下拍摄的第二照片作为最后的成果照片输出，用户可根据需要保存或删除输出的照片。
由于同样的抖动条件下，曝光时间越短防抖效果越好，清晰度越好，但拍摄过程中的噪声干扰越大，准确性越低，因此当正常曝光参数下拍摄的备选照片的清晰度较为接近防抖效果更好的快速曝光参数下拍摄的第二照片的清晰度时，为避免噪声干扰，提高准确性，选择备选照片作为最后的成果照片输出；当正常曝光参数下拍摄的备选照片的清晰度与防抖效果更好的快速曝光参数下拍摄的第二照片的清晰度相差较大时，选择清晰度更高的第二照片作为最后的成果照片输出。可选的，输出第二照片之前，可对第二照片进行降噪处理，避免噪声 干扰，提高准确性。采用上述方法选择性输出备选照片或第二照片，使得输出的照片防抖效果较为理想，清晰度较好。
本申请实施例的防抖拍照方法，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例二
图2为本申请实施例提供的防抖拍照方法又一个实施例的流程示意图。本申请实施例的防抖拍照方法可应用于各种具有拍照功能的移动终端(例如手机、平板电脑等)中。如图2所示，本申请实施例的防抖拍照方法为图1所示实施例的防抖拍照方法的一种可行实施方式，具体可包括：
S201，当接收到拍照指令时，判断移动终端的稳定状态。
S202，若稳定状态处于稳定状态阈值范围内，则预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片。
具体的，步骤S201和S202在图1所示实施例中的步骤S101的基础上增加了对移动终端的稳定状态进行判断的步骤。通过判断移动终端的稳定状态，当移动终端的稳定状态处于稳定状态阈值范围内(稳定状态既不过于稳定也不过于不稳定)时，执行预拍摄操作以及后续的防抖处理过程。当移动终端的稳定状态过于稳定时，例如使用三脚架固定移动终端时，几乎不存在抖动情形，因此无需防抖处理，直接正常拍摄即可，避免增加不必要的拍摄时间。当移动终端的稳定状态过于不稳定时，例如移动终端晃动过大时，由于抖动过于明显，超出了本申请实施例防抖处理的能力范围，因此也无需防抖处理，直接正常拍摄即可，避免进行无意义的防抖处理过程，此时还可以在用户界面上提示移动终端晃动。
进一步的，步骤S201中判断移动终端的稳定状态的具体过程可包 括：获取移动终端的稳定状态数据；根据稳定状态数据计算移动终端的稳定性数值；根据稳定性数值判断移动终端的稳定状态。其中，移动终端的稳定状态数据具体可包括从移动终端的加速度计获取到的加速度计数据和/或从移动终端的陀螺仪获取到的陀螺仪数据。
进一步的，步骤S202具体可包括：若稳定性数值处于稳定性阈值范围内，则预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片。
进一步的，步骤S201中，在判断移动终端的稳定状态之前，还可以包括曝光时间的判断步骤，选择适合本申请实施例防抖处理的光线条件，具体可包括：获取曝光时间数据；若曝光时间数据处于曝光时间阈值范围内，则判断移动终端的稳定状态。
具体的，通过获取当前预览时自动曝光模式下调整的曝光时间数据，当曝光时间数据处于曝光时间阈值范围内(曝光时间既不过长也不过短，例如1/100秒～1/30秒)时，例如曝光时间为1/60秒时，执行判断移动终端的稳定状态的操作以及稳定状态满足条件时后续的预拍摄操作和防抖处理过程。当曝光时间过短时，例如曝光时间小于1/100秒时，抖动情形可以忽略不计，因此无需防抖处理，直接正常拍摄即可，避免增加不必要的拍摄时间。当曝光时间过长时，例如曝光时间大于1/30秒时，由于超出了本申请实施例防抖处理的能力范围，因此也无需防抖处理，直接正常拍摄即可，避免进行无意义的防抖处理过程。
进一步的，步骤S202中，在预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片之前，还可以包括：启动迸发Burst拍照模式；设置快速曝光参数(例如在正常曝光时间为1/60秒时，设置快速曝光时间为1/100秒，同时增大增益，保持曝光值不变)。
具体的，启动迸发Burst拍照模式后，会进行连拍操作，连续拍摄多张正常曝光参数下的第一照片和多张快速曝光参数下的第二照片，从中选择多张(例如3张)正常曝光参数下的第一照片和一张快速曝光参数下的第二照片缓存。
图1所示实施例中的步骤S102具体可包括以下步骤S203和S204：
S203，分别计算多张第一照片相对于第二照片的相对清晰度。
S204，选择相对清晰度最高的第一照片作为备选照片。
具体的，假设3张第一照片相对于第二照片的相对清晰度分别为0.5、0.6和0.9，则将相对清晰度为0.9的第一照片作为备选照片。
S205，若备选照片相对于第二照片的相对清晰度大于相对清晰度阈值，则输出备选照片。
具体的，步骤S205的具体过程可参见图1所示实施例中步骤S103中的相关描述，此处不再赘述。
S206，若备选照片的相对清晰度等于或者小于相对清晰度阈值，则输出第二照片。
具体的，步骤S206的具体过程可参见图1所示实施例中步骤S104中的相关描述，此处不再赘述。
为清楚说明本申请实施例的防抖拍照方法的具体过程，图3给出了图2所示实施例的防抖拍照方法一种可行实施方式的流程示意图。如图3所示，包括：
S301，用户按下快门。
S302，锁定自动曝光/自动对焦。
S303，获取曝光时间数据。
S304，判断曝光时间数据是否小于阈值1。若是，则执行步骤S305；若否，则执行步骤S306。
其中，阈值1具体可以为1/100秒。
S305，无需防抖处理，直接正常拍照，拍照结束。
S306，判断曝光时间数据是否小于阈值2。若是，则执行步骤S308；若否，则执行步骤S307。
其中，阈值2大于阈值1，具体可以为1/30秒。
S307，超出防抖处理能力范围，直接正常拍照，拍照结束。
S308，读取加速度计和陀螺仪数据。
S309，判断移动终端的稳定状态。若稳定状态很好，则执行步骤 S305；若稳定状态很差，则执行步骤S307；若稳定状态处于稳定状态阈值范围内，则执行步骤S310。
S310，启动迸发Burst拍照模式。
S311，设置快速曝光参数。
S312，预拍摄3张正常曝光参数下的第一照片和1张快速曝光参数下的第二照片。
S313，分别计算3张第一照片相对于第二照片的相对清晰度。
S314，选择相对清晰度最高的第一照片作为备选照片。
S315，判断备选照片的相对清晰度是否大于相对清晰度阈值。若是，则执行步骤S316；若否，则执行步骤S317。
其中，相对清晰度阈值可以为0.8。
S316，输出并保存备选照片，拍照结束。
S317，输出并保存降噪处理后的第二照片，拍照结束。
本申请实施例的防抖拍照方法，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例三
图4为本申请实施例提供的防抖拍照装置一个实施例的结构示意图。本申请实施例的防抖拍照装置可设置在各种具有拍照功能的移动终端(例如手机、平板电脑等)中，执行图1所示实施例的防抖拍照方法。如图4所示，本申请实施例的防抖拍照装置具体可包括预拍摄模块41、选择模块42、第一输出模块43和第二输出模块44。其中：
预拍摄模块41，用于当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片。
选择模块42，用于选择多张第一照片中清晰度最高的第一照片作为备选照片。
第一输出模块43，用于若备选照片相对于第二照片的相对清晰度大于相对清晰度阈值，则输出备选照片。
第二输出模块44，用于若备选照片的相对清晰度等于或者小于相对清晰度阈值，则输出第二照片。
具体的，本申请实施例的防抖拍照装置中各模块实现其功能的具体过程可参见图1所示方法实施例中的相关描述，此处不再赘述。
本申请实施例的防抖拍照装置，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例四
图5为本申请实施例提供的防抖拍照装置又一个实施例的结构示意图。本申请实施例的防抖拍照装置可设置在各种具有拍照功能的移动终端(例如手机、平板电脑等)中，执行图2所示实施例的防抖拍照方法。如图5所示，本申请实施例的防抖拍照装置在图4所示实施例的基础上，预拍摄模块41具体可包括判断子模块51和预拍摄子模块52。
判断子模块51，用于当接收到拍照指令时，判断移动终端的稳定状态。
预拍摄子模块52，用于若稳定状态处于稳定状态阈值范围内，则预拍摄多张第一照片和一张第二照片。
进一步的，判断子模块51具体可包括：获取单元，用于当接收到拍照指令时，获取移动终端的稳定状态数据；计算单元，用于根据稳定状态数据计算移动终端的稳定性数值；判断单元，用于根据稳定性数值判断移动终端的稳定状态。
相应的，预拍摄子模块52具体可用于：若稳定性数值处于稳定性阈值范围内，则预拍摄多张第一照片和一张第二照片。
进一步的，稳定状态数据包括加速度计数据和/或陀螺仪数据。
进一步的，判断子模块51具体可包括：曝光时间获取单元，用于当接收到拍照指令时，获取曝光时间数据；稳定状态判断单元，用于若曝光时间数据处于曝光时间阈值范围内，则判断移动终端的稳定状态。
进一步的，预拍摄模块41还可用于在预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片之前：启动迸发Burst拍照模式；设置快速曝光参数。
进一步的，选择模块42具体可包括计算子模块53和选择子模块54。
计算子模块53，用于分别计算多张第一照片相对于第二照片的相对清晰度。
选择子模块54，用于选择相对清晰度最高的第一照片作为备选照片。
进一步的，第二输出模块44还可用于：在输出第二照片之前，对第二照片进行降噪处理。
具体的，本申请实施例的防抖拍照装置中各模块或单元实现其功能的具体过程可参见图2所示方法实施例中的相关描述，此处不再赘述。
本申请实施例的防抖拍照装置，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例五
图6为本申请实施例提供的移动终端一个实施例的结构示意图。本申请实施例的移动终端具体可为各种具有拍照功能的移动终端(例如手机、平板电脑等)，可执行图1或图2所示实施例的防抖拍照方 法。如图6所示，本申请实施例的移动终端61包括上述图4或图5所示实施例的防抖拍照装置62。
具体的，本申请实施例的移动终端61中的防抖拍照装置62实现其功能的具体过程可参见图1或图2所示实施例中的相关描述，此处不再赘述。
本申请实施例的移动终端，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例六
图7为本申请实施例提供的防抖拍照装置的又一个实施例的结构示意图。如图7所示，本申请实施例的防抖拍照装置包括：存储器71、一个或多个处理器72以及一个或多个程序73。
其中，所述一个或多个程序73在由一个或多个处理器72执行时执行上述实施例中的任意一种方法。
本申请实施例提供的防抖拍照装置，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
实施例七
图8为本申请实施例提供的用于防抖拍照的计算机程序产品一个实施例的结构示意图。如图8所示，本申请实施例的用于防抖拍照的计算机程序产品81，可以包括信号承载介质82。信号承载介质82可以包括一个或更多个指令83，该指令83在由例如处理器执行时，处理器可以提供以上针对图1-6描述的功能。例如，指令83可以包 括：用于当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片的一个或多个指令；用于选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片的一个或多个指令；用于若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片的一个或多个指令；以及用于若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。因此，例如，参照图4，防抖拍照装置可以响应于指令83来进行图1中所示的步骤中的一个或更多个。
在一些实现中，信号承载介质82可以包括计算机可读介质84，诸如但不限于硬盘驱动器、压缩盘(CD)、数字通用盘(DVD)、数字带、存储器等。在一些实现中，信号承载介质82可以包括可记录介质85，诸如但不限于存储器、读/写(R/W)CD、R/W DVD等。在一些实现中，信号承载介质82可以包括通信介质86，诸如但不限于数字和/或模拟通信介质(例如，光纤线缆、波导、有线通信链路、无线通信链路等)。因此，例如，计算机程序产品81可以通过RF信号承载介质82传送给多指滑动手势的识别装置的一个或多个模块，其中，信号承载介质82由无线通信介质(例如，符合IEEE 802.11标准的无线通信介质)传送。
本申请实施例的计算机程序产品，通过预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片，并根据多张第一照片中清晰度最高的照片的清晰度，选择性输出清晰度最高的第一照片或第二照片，基于软件实现了防抖拍照功能，减小了数码相机中摄像头模组的体积、降低了成本和使用时的功耗。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件。基于这样的理解，上述技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个 人计算机，服务器，或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (17)

  1. 一种防抖拍照方法，其特征在于，包括：
    当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；
    选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；
    若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；
    若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
  2. 根据权利要求1所述的方法，其特征在于，所述当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片包括：
    当接收到所述拍照指令时，判断移动终端的稳定状态；
    若所述稳定状态处于稳定状态阈值范围内，则预拍摄多张所述第一照片和一张所述第二照片。
  3. 根据权利要求2所述的方法，其特征在于，所述当接收到所述拍照指令时，判断移动终端的稳定状态包括：
    当接收到所述拍照指令时，获取所述移动终端的稳定状态数据；
    根据所述稳定状态数据计算所述移动终端的稳定性数值；
    根据所述稳定性数值判断所述移动终端的所述稳定状态；
    所述若所述稳定状态处于稳定状态阈值范围内，则预拍摄多张所述第一照片和一张所述第二照片包括：
    若所述稳定性数值处于稳定性阈值范围内，则预拍摄多张所述第一照片和一张所述第二照片。
  4. 根据权利要求3所述的方法，其特征在于，所述稳定状态数据包括加速度计数据和/或陀螺仪数据。
  5. 根据权利要求2所述的方法，其特征在于，所述当接收到所述拍照指令时，判断移动终端的稳定状态包括：
    当接收到所述拍照指令时，获取曝光时间数据；
    若所述曝光时间数据处于曝光时间阈值范围内，则判断所述移动终端的所述稳定状态。
  6. 根据权利要求1所述的方法，其特征在于，所述预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片之前，还包括：
    启动迸发Burst拍照模式；
    设置所述快速曝光参数。
  7. 根据权利要求1所述的方法，其特征在于，所述选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片包括：
    分别计算多张所述第一照片相对于所述第二照片的所述相对清晰度；
    选择所述相对清晰度最高的所述第一照片作为所述备选照片。
  8. 根据权利要求1所述的方法，其特征在于，所述输出所述第二照片之前，还包括：
    对所述第二照片进行降噪处理。
  9. 一种防抖拍照装置，其特征在于，包括：
    预拍摄模块，用于当接收到拍照指令时，预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片；
    选择模块，用于选择多张所述第一照片中清晰度最高的所述第一照片作为备选照片；
    第一输出模块，用于若所述备选照片相对于所述第二照片的相对清晰度大于相对清晰度阈值，则输出所述备选照片；
    第二输出模块，用于若所述备选照片的所述相对清晰度等于或者小于所述相对清晰度阈值，则输出所述第二照片。
  10. 根据权利要求9所述的装置，其特征在于，所述预拍摄模块包括：
    判断子模块，用于当接收到所述拍照指令时，判断移动终端的稳定状态；
    预拍摄子模块，用于若所述稳定状态处于稳定状态阈值范围内，则预拍摄多张所述第一照片和一张所述第二照片。
  11. 根据权利要求10所述的装置，其特征在于，所述判断子模块包括：
    获取单元，用于当接收到所述拍照指令时，获取所述移动终端的稳定状态数据；
    计算单元，用于根据所述稳定状态数据计算所述移动终端的稳定性数值；
    判断单元，用于根据所述稳定性数值判断所述移动终端的所述稳定状态；
    所述预拍摄子模块具体用于：
    若所述稳定性数值处于稳定性阈值范围内，则预拍摄多张所述第一照片和一张所述第二照片。
  12. 根据权利要求11所述的装置，其特征在于，所述稳定状态数据包括加速度计数据和/或陀螺仪数据。
  13. 根据权利要求10所述的装置，其特征在于，所述判断子模块包括：
    曝光时间获取单元，用于当接收到所述拍照指令时，获取曝光时间数据；
    稳定状态判断单元，用于若所述曝光时间数据处于曝光时间阈值范围内，则判断所述移动终端的所述稳定状态。
  14. 根据权利要求9所述的装置，其特征在于，所述预拍摄模块还用于在所述预拍摄多张正常曝光参数下的第一照片和一张快速曝光参数下的第二照片之前：
    启动迸发Burst拍照模式；
    设置所述快速曝光参数。
  15. 根据权利要求9所述的装置，其特征在于，所述选择模块包括：
    计算子模块，用于分别计算多张所述第一照片相对于所述第二照 片的所述相对清晰度；
    选择子模块，用于选择所述相对清晰度最高的所述第一照片作为所述备选照片。
  16. 根据权利要求9所述的装置，其特征在于，所述第二输出模块还用于：
    在所述输出所述第二照片之前，对所述第二照片进行降噪处理。
  17. 一种移动终端，其特征在于，包括如权利要求9-16任一项所述的防抖拍照装置。
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