WO2018000299A1 - Procédé d'assistance à l'acquisition d'images par un dispositif - Google Patents

Procédé d'assistance à l'acquisition d'images par un dispositif Download PDF

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Publication number
WO2018000299A1
WO2018000299A1 PCT/CN2016/087841 CN2016087841W WO2018000299A1 WO 2018000299 A1 WO2018000299 A1 WO 2018000299A1 CN 2016087841 W CN2016087841 W CN 2016087841W WO 2018000299 A1 WO2018000299 A1 WO 2018000299A1
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WO
WIPO (PCT)
Prior art keywords
target picture
outline
picture
display
preview
Prior art date
Application number
PCT/CN2016/087841
Other languages
English (en)
Inventor
Nan Ye
Liang Han
Xin Wang
Original Assignee
Orange
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 Orange filed Critical Orange
Priority to PCT/CN2016/087841 priority Critical patent/WO2018000299A1/fr
Publication of WO2018000299A1 publication Critical patent/WO2018000299A1/fr

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Classifications

    • 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
    • H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
    • 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
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
    • 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
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders

Definitions

  • the field of this invention is that of photography.
  • the invention relates to a method for assisting the acquisition of a picture by an electronic device.
  • Document US 2010266269 discloses an imaging equipment storing a plurality of pieces of photographic settings information suitable (and actually performed) for photography at various locations.
  • the present invention provides a method for assisting the acquisition of a picture by a device comprising a processing unit, a display and a camera, the device being configured to output on said display a preview of a scene visible from the camera, the method comprising performing by the processing unit steps of:
  • the device further comprises a locating unit providing location data associated to the device, step (b) comprising comparing location data associated to the device and location data associated with the target picture;
  • ⁇ step (b) comprises outputting a signal indicating when location data associated to the device match location data associated with the target picture
  • the method further comprises a step (c) of acquiring a picture when the outline provided as an overlay to said preview outputted on said display matches an outline of a depiction of the reference object in said preview;
  • ⁇ step (c) comprises outputting a signal indicating when the outline provided as an overlay to said preview outputted on said display matches an outline of a depiction of the reference object in said preview;
  • the method further comprises a previous step (a0) of selecting at an equipment the target picture, and processing the target picture by a processing unit of the equipment so as to determine said reference data;
  • ⁇ processing the target picture by a processing unit of the equipment comprises identifying said at least one reference object in the target picture, and extracting the outline of each identified reference object;
  • the equipment is connected to a database of famous reference objects, identifying said at least one reference object in the target picture comprising searching the target picture for famous reference objects of said database;
  • the device acts as the equipment
  • the device is a smartphone
  • step (a) comprising transmitting said reference data from the equipment to the device;
  • the device and the equipment are connected through a network.
  • the invention provides an electronic device comprising a processing unit, a display and a camera, the processing unit being configured to implement:
  • reference data associated to a target picture depicting at least one reference object, said reference data comprising at least location data and an outline of said reference object;
  • the invention provides a computer program product, comprising code instructions for executing a method according to the first aspect for assisting the acquisition of a picture by a device; and a computer-readable medium, on which is stored a computer program product comprising code instructions for executing a method according to the first aspect for assisting the acquisition of a picture by a device.
  • FIG. 1 illustrates an example of architecture in which the method according to the invention is performed
  • figure 2a represents an example of target image and figure 2b represents the associated outline extracted.
  • the present invention relates to a method for assisting the acquisition of a picture by a device 1, as represented by figure 1. More precisely, the present method aims at easily enabling a user to reproduce a target picture, i.e. acquiring a picture of the same scene, i.e. from the same point and with a same orientation, but with a different foreground if wished (for example with other people) .
  • the target picture shall depict at least one reference object, i.e. a visible point of interest such as a famous monument (for example the Eiffel Tower, the Tower of Pisa) , a natural curiosity (for example the Mount Fuji, Uluru) , etc. It can be assumed that any photograph that was taken at a famous place and that people wants to reproduce depicts at least one reference object.
  • Figure 2a represents an example of target picture with the Eiffel Tower within the background.
  • the method is performed at a device 1 comprising at least a processing unit 11 (typically a processor) , a display 13 (typically a screen, possibly touch sensitive) and a camera 14, i.e. optical means for acquiring a picture of scene in front of the device 1.
  • the device 1 is being configured to output on said display 13 a preview of a scene visible from the camera 14.
  • the camera 14 is advantageously on a front face of the device 1, wherein the display 13 is on a rear face of the device.
  • the device 1 may comprise a secondary camera on the rear face (which is for example the case for smartphones, see below) or have the display 13 articulated, so as to allow taking selfies.
  • preview it is meant a low quality depiction (which is not further kept) of a picture that would have been acquired at this moment if the user had triggered the camera 14.
  • Such preview allows the users to visualize the picture they are about to take so as to change their position or the settings if they are not satisfied.
  • the device 1 preferably further comprises a memory 12, possibly removable (i.e. a memory card for example of SD type) , for storing the acquired pictures, a location unit 14 for providing location data representative of the position of the device 1 (using for example GPS, network triangulation, etc. ) , and/or a communication unit 16 for connecting (in particular wirelessly) the device 1 to a network 20 (for example WiFi, Bluetooth, and preferably a mobile network, in particular a GSM/UMTS/LTE network, see below) .
  • a network 20 for example WiFi, Bluetooth, and preferably a mobile network, in particular a GSM/UMTS/LTE network, see below.
  • the device 1 may be any digital camera or even a more complex device such as a smartphone, a tablet computer, etc.
  • Another equipment 2 may be connected to the device 1, either continuously (though a cable, through the network 20, etc. ) or intermittently (for example by swapping memory cards) so as to allow transfer of pictures and/or data.
  • the equipment 2 is for example a personal computer with its own processing unit 21 and its memory 22 (for example a hard drive) .
  • the device 1 also acts as the equipment 2, i.e. the device 1 and the equipment 2 are a single entity having both roles.
  • the processing unit 11 and the processing unit 21 are confused, and the memory 21 and the memory 22 are confused.
  • the present method starts with a step (a) of obtaining by the processing unit 11 of the device 1 reference data associated to a target picture depicting at least one reference object, said reference data comprising at least location data and an outline of said reference object.
  • figure 2b represents the outline of the Eiffel Tower as visible in the target picture of figure 2a.
  • a database of target pictures and associated reference data might be available, but advantageously the method comprises a previous step (a0) of selecting at the equipment 2 the target picture, and processing the target picture by the processing unit 21 of the equipment 2 so as to determine said reference data. It allows using any picture that the user likes as a target picture.
  • the user selects the target picture (it can be either stored on the memory 22 of the equipment 2, or accessible through the network 20, for example if the target picture is published on a social network and encountered by the user) and requests (for example through a dedicated application or a plugin of a browser) to process it.
  • the location is generally available as a metadata of the picture (devices like smartphones comprise a locating unit and they automatically embed location data such a coordinates or an address of the current place when acquiring a pictures) , or might be indicated by the user having taken this target picture.
  • Processing the target picture further comprises identifying said at least one reference object in the target picture, and extracting the outline of each identified reference object.
  • the equipment 2 may be connected to a database of “famous” reference objects (it can be either stored on the memory 22, or online and accessible through the network 20) such as moments, as already explained.
  • Each famous reference object is associated in the database to at least one thumbnail depicting it (preferably a plurality according to several points of view) . Therefore, identifying said at least one reference object in the target picture comprises searching the target picture for famous reference objects of said database (algorithms comparing two images are well known) , and a reference object may be considered as identified when matching a thumbnail (asimilarity score may be calculated) .
  • the user can manually select the reference object in the target picture by clicking it.
  • reference objects other than the famous ones may be used (the selected reference object might be further transmitting so as to enrich the database of famous reference objects) .
  • edge detection algorithms identify points in the image at which the image brightness has discontinuities (i.e. changes sharply) .
  • step (a) comprises transmitting said reference data from the equipment 2 to the device 1.
  • step (b) when a location of the device 1 matches said location data associated with the target picture, the outline (more preferably the outlines of all the reference objects of the target picture) is provided as an overlay to said preview outputted on said display 13 so as to allow reproducing said target picture.
  • the user has the outline of each reference object of the target picture appearing on the display 13. All he has to do is to have the reference objects as visible in the preview on said display 13 fit into the outlines added to the preview, and then to trigger the camera 14.
  • the matching between the location of the device 1 and said location data associated with the target picture is either manually submitted by the user, or automatically ascertained.
  • the user is simply provided the location data through the display 13, he goes to the place defined by the location data, and when he assumes having reaching it, he requests the device 1 to provide the outline as an overlay to said preview outputted on said display 13.
  • step (b) advantageously comprises comparing location data associated to the device 1 and location data associated with the target picture.
  • the user is also provided with the location data through the display 13, he goes to the place defined by the location data while the location unit 15 periodically acquire location data associated to the device 1, and when the processing unit 11 determines that the location data match (i.e. when the distance between the position corresponding to the location data associated to the device 1 and the location data associated to the target picture is below a given threshold) , it provides the outline as an overlay to said preview outputted on said display 13.
  • step (b) comprises outputting a signal indicating that location data associated to the device 1 match location data associated with the target picture.
  • a signal may be an audio signal (a bip) or a visual signal on the display 13 (for example blinking) , so that the user stops moving and starts fitting the reference objects into the outlines.
  • the user may be automatically suggested to reproduce one of the potential target images if he is close to the reference location associated to this target image (in such an embodiment, the user does not have to select a target image, and is not provided with location data through the display 13) .
  • the method advantageously further comprises a step (c) of acquiring a picture (thus reproducing the target picture) when the outline provided as an overlay to said preview outputted on said display 13 matches the outline of a depiction of the reference object in said preview.
  • Said acquisition may be performed either manually when the user estimates having the right orientation (or simply when he likes the scene) , or automatically by the processing unit 11 (when it detects that the outline provided as an overlay to said preview outputted on said display 13 matches an outline of a depiction of the reference object in said preview) so as to get the closest picture to the target picture.
  • step (c) advantageously comprises outputting a signal indicating when the outline provided as an overlay to said preview outputted on said display 13 matches an outline of a depiction of the reference object in said preview.
  • a signal may also be an audio signal (abip) or a visual signal on the display 13 (for example change in the color of the outline) , so that the user knows that he can triggers the camera 14.
  • the present invention concerns an electronic device 1 comprising a processing unit 11, a display 13 and a camera 14, adapted for carrying out the method for assisting the acquisition of a picture as previously described.
  • the device 1 may also comprise a memory 12, a locating unit 15, and/or a communication unit 16.
  • Said processing unit 11 is configured to implement:
  • reference data associated to a target picture depicting at least one reference object, said reference data comprising at least location data and an outline of said reference object;
  • the device 1 may further act as an equipment 2 for selecting at an the target picture, and processing the target picture so as to determine said reference data, or may be connected to such an equipment 2.
  • the invention further proposes a computer program product, comprising code instructions for executing (in particular with a processing unit 11 of the device 1) a method according to the method for assisting the acquisition of a picture by a device 1; and a computer-readable medium (in particular a memory 12 of the device 1) , on which is stored a computer program product comprising code instructions for executing said method.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Processing Or Creating Images (AREA)

Abstract

Un procédé d'assistance à l'acquisition d'une image par un dispositif (1) comprend une unité de traitement (11), un afficheur (13) et une caméra (14), le dispositif (1) étant configuré pour délivrer sur ledit afficheur (13) une prévisualisation d'une scène visible à partir de la caméra (14). Le procédé comprend la réalisation par l'unité de traitement (11) des étapes suivantes : (a) obtenir des données de référence associées à une image cible décrivant au moins un objet de référence, lesdites données de référence comprenant au moins des données de localisation et un contour dudit objet de référence; (b) fournir, lorsqu'un emplacement du dispositif (1) correspond auxdites données de localisation associées à l'image cible, le contour en tant que recouvrement à ladite prévisualisation émise sur ledit afficheur (13) de manière à permettre la reproduction de ladite image cible.
PCT/CN2016/087841 2016-06-30 2016-06-30 Procédé d'assistance à l'acquisition d'images par un dispositif WO2018000299A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/087841 WO2018000299A1 (fr) 2016-06-30 2016-06-30 Procédé d'assistance à l'acquisition d'images par un dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/087841 WO2018000299A1 (fr) 2016-06-30 2016-06-30 Procédé d'assistance à l'acquisition d'images par un dispositif

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111466112A (zh) * 2018-08-10 2020-07-28 华为技术有限公司 一种图像拍摄方法及电子设备
CN111611415A (zh) * 2020-05-21 2020-09-01 百度在线网络技术（北京）有限公司 图片展示方法、服务器、电子设备及存储介质
EP3764633A1 (fr) * 2019-07-12 2021-01-13 Beijing Xiaomi Mobile Software Co., Ltd. Procédé et dispositif de photographie, support d'enregistrement et programme informatique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103297697A (zh) * 2013-05-30 2013-09-11 北京小米科技有限责任公司 在拍照过程中显示模板照片的方法及装置
CN104135609A (zh) * 2014-06-27 2014-11-05 小米科技有限责任公司 辅助拍照方法、装置及终端
CN104298965A (zh) * 2014-09-12 2015-01-21 东北大学 一种面向移动终端的旅游景点及景物智能识别系统及方法
CN105139337A (zh) * 2015-09-10 2015-12-09 北京金山安全软件有限公司 一种图片生成方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103297697A (zh) * 2013-05-30 2013-09-11 北京小米科技有限责任公司 在拍照过程中显示模板照片的方法及装置
CN104135609A (zh) * 2014-06-27 2014-11-05 小米科技有限责任公司 辅助拍照方法、装置及终端
CN104298965A (zh) * 2014-09-12 2015-01-21 东北大学 一种面向移动终端的旅游景点及景物智能识别系统及方法
CN105139337A (zh) * 2015-09-10 2015-12-09 北京金山安全软件有限公司 一种图片生成方法及装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111466112A (zh) * 2018-08-10 2020-07-28 华为技术有限公司 一种图像拍摄方法及电子设备
EP3764633A1 (fr) * 2019-07-12 2021-01-13 Beijing Xiaomi Mobile Software Co., Ltd. Procédé et dispositif de photographie, support d'enregistrement et programme informatique
CN111611415A (zh) * 2020-05-21 2020-09-01 百度在线网络技术（北京）有限公司 图片展示方法、服务器、电子设备及存储介质
CN111611415B (zh) * 2020-05-21 2023-08-08 百度在线网络技术（北京）有限公司 图片展示方法、服务器、电子设备及存储介质

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