WO2021008208A1 - System and method for recommending a media capturing mode - Google Patents

System and method for recommending a media capturing mode Download PDF

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Publication number
WO2021008208A1
WO2021008208A1 PCT/CN2020/089662 CN2020089662W WO2021008208A1 WO 2021008208 A1 WO2021008208 A1 WO 2021008208A1 CN 2020089662 W CN2020089662 W CN 2020089662W WO 2021008208 A1 WO2021008208 A1 WO 2021008208A1
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WIPO (PCT)
Prior art keywords
image
preview frame
camera preview
camera
media
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PCT/CN2020/089662
Other languages
French (fr)
Inventor
Kaushal Prakash SHARMA
Nitin SETIA
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Guangdong Oppo Mobile Telecommunications Corp., Ltd.
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Application filed by Guangdong Oppo Mobile Telecommunications Corp., Ltd. filed Critical Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Publication of WO2021008208A1 publication Critical patent/WO2021008208A1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16Human faces, e.g. facial parts, sketches or expressions
    • G06V40/172Classification, e.g. identification
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/10Image acquisition
    • G06V10/12Details of acquisition arrangements; Constructional details thereof
    • G06V10/14Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/147Details of sensors, e.g. sensor lenses
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00Scenes; Scene-specific elements
    • G06V20/20Scenes; Scene-specific elements in augmented reality scenes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00Scenes; Scene-specific elements
    • G06V20/30Scenes; Scene-specific elements in albums, collections or shared content, e.g. social network photos or video
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V2201/00Indexing scheme relating to image or video recognition or understanding
    • G06V2201/10Recognition assisted with metadata

Definitions

  • the present invention generally relates to the field of image analysis and more particularly to a system and method for recommending at least one media capturing mode based on calculated imaging parameters.
  • Capturing and sharing images, videos, etc. has been established as a form of expression and has become the most used feature in smartphones.
  • capturing images have gained wide popularity not just amongst young people but in people of every age group.
  • captured images are intended to present a flattering image of the person whose image is being clicked. These images may be captured on trips, during activities that are considered interesting or as a group photograph with people of same interest or in any other suitable situation.
  • Images can be captured with a number of variations like, at different angles, positions, in various styles and facial expressions etc. Captured images provide users, the control to present themselves in a better way to the world. With the increased trend of image capturing, various technologies have evolved that help the users take better pictures. For instance, features such as auto focus, auto zoom, exposure compensation, scene detection, multiple shooting modes, adjustable shutter speeds, etc. have been widely adapted in cameras to enhance the quality of photos/images being captured.
  • the present disclosure provides a method and system for recommending at least one media capturing mode.
  • One aspect of the invention relates to a method to recommend at least one media capturing mode comprising, receiving, in real-time, a camera preview frame on at least one camera preview frame unit and performing image analysis of said camera preview frame wherein said image analysis comprises identifying at least one face from said camera preview frame.
  • image analysis comprises identifying at least one face from said camera preview frame.
  • at least one image and at least one metadata associated with said at least one image is retrieved from one of a memory unit, at least one social networking application server unit and a combination thereof.
  • image analysis of the retrieved image is performed.
  • the method includes recommending, in real-time, at least one media capturing mode, based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
  • a system to recommend at least one media capturing mode which comprises a camera unit configured to receive a camera preview frame on at least one camera preview frame unit.
  • the system further comprises a processing unit, connected to said camera unit, the processing unit configured to perform an image analysis of said camera preview frame. This image analysis further comprises identifying at least one face from said camera preview frame and determining at least one imaging parameter of said camera preview frame.
  • the system comprises a transceiver unit connected to said camera unit and said processing unit, the transceiver unit configured to retrieve at least one image and at least one metadata associated with said at least one image, from one of a storage unit, at least one social networking application server unit and a combination thereof, based at least on said identified at least one face.
  • the said processing unit is further configured to perform image analysis of said retrieved at least one image and recommend at least one media capturing mode, based on said image analysis of said camera preview frame and said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
  • FIG. 1 illustrates a general overview of the implementation of the system for recommending at least one media capturing mode, in accordance with exemplary embodiments of the present disclosure.
  • FIG. 2 illustrates a block diagram of the system for recommending at least one media capturing mode, in accordance with exemplary embodiment of the present disclosure.
  • FIG. 3 illustrates an exemplary architecture of a camera unit, in accordance with exemplary embodiments of the present disclosure.
  • FIG. 4 illustrates an exemplary method flow diagram depicting method for recommending a media capturing mode, in accordance with exemplary embodiments of the present disclosure.
  • FIG. 5 (a) illustrates an example of a camera preview frame, in accordance with exemplary embodiments of the present disclosure.
  • FIG. 5 (b) illustrates an example transparent overlay generated in accordance with exemplary embodiments of the present disclosure.
  • FIG. 5 (c) illustrates an example of recommended media capturing mode, in accordance with exemplary embodiments of the present disclosure.
  • the present invention provides a method and system which recommends at least one media capturing mode to assist user capturing the best possible media in the current environment or surroundings.
  • the present invention performs media/image analysis of the camera preview frame to determine, at least one imaging parameter and to identify at least one face associated with at least one said camera preview frame in real time. Based on the identified face or the determined real time imaging parameters or a combination thereof, the invention enables retrieving at least one media from at least one memory unit, at least one social networking server unit and a combination thereof.
  • the present invention further performs media/image analysis to determine at least one imaging parameter associated with the said retrieved image. Thereafter, the identified real time imaging parameters of said camera preview frame are compared with the said identified imaging parameters of the said retrieved image.
  • the present invention further generates a media capturing mode based on this comparison and displays the same as a transparent overlay to the user.
  • the media capturing mode includes at least one calculated/generated image which is displayed over the camera preview frame. This assists the user in comparing the generated image with the live camera preview frame.
  • the present invention further provides the user the facility, to see the generated image without the need to capture the media and discard it later. Also, the invention allows the user to see the media capturing mode and directly share/use such media capturing mode on a social networking platform and other users, without the need to save the media in the device.
  • the present invention therefore, adds a convenience aspect to capture enhanced and quick media. It also reduces the user’s efforts in adjusting the camera settings and capturing the media, by providing quick operation over camera preview frame without any delay and by providing the best possible, at least one generated image/media to the user.
  • the “camera preview frame” comprises at least one real time preview of an event picked up by the camera sensor unit. Further the said real-time preview of an event comprises the preview of at least one real time imaging parameter.
  • camera preview frame may refer to the preview generated by a camera and can be seen on the display of a user device when the user opens a camera application.
  • media refers to images, videos, animations, etc. and any other type of media that can be captured using a camera, as may be obvious to a person skilled in the art.
  • the “transparent overlay” refers to a transparent layer of media that can be displayed on the user device over an existing display of camera preview frame unit, or a media or anything else displayed on the user device.
  • the transparent overlay is displayed on the user device in a manner such that the underlying preview frame/media, etc. is partly visible.
  • the transparent overlay generated by the invention comprises at least one real time media capturing mode generated with the reference of the camera preview frame.
  • the “imaging parameters” comprises one or more parameters of a scene, an exposure, a face area, an ISO value etc.
  • image/media analysis refers to determination of one or more imaging parameters and/or identification of at least one face.
  • Metadata includes number of likes on the media, number of times media opened, number of time media shared, media marked as favorite, number of comments on the media, types of the comments and the like.
  • metadata of an image stored on a social networking platform server may include the number of likes the image has received on a social networking platform, the number of times the user or his friends have shared the image on a social networking platform, etc.
  • metadata of an image stored on a user device may include whether or not the user has marked that image as favorite, the number of times the user has opened that image, etc.
  • a “processing unit” or “processor” includes one or more processors, wherein processor refers to any logic circuitry for processing instructions.
  • a processor may be a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor, a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits, Field
  • the processor may perform signal coding data processing, input/output processing, and/or any other functionality that enables the working of the system according to the present disclosure. More specifically, the processor or processing unit is a hardware processor.
  • FIG. 1 a general overview of the implementation of the system for recommending a media capturing mode in accordance with exemplary embodiments of the present invention is shown.
  • the systems [108 (1) ] , [108 (2) ] , [108 (3) ] ... [108 (n) ] (Collectively referred to as system [108] ) may be implemented in corresponding user devices [102 (1) ] , [102 (2) ] , [102 (3) ] ... [102 (n) ] (Collectively referred to as user devices [102] ) .
  • the user devices [102 (1) ] , [102 (2) ] , [102 (3) ] ... [102 (n) ] are connected to one or more social networking server units [104 (1) ] , [104 (2) ] , [104 (3) ] ... [104 (n) ] (Collectively referred to as social networking server units [104] ) via at least one network [106] .
  • the one or more user devices [104] may be connected to each other via the network [106] or another network.
  • the one or more social networking server units [104] may be connected to each other via the network [106] or any other network.
  • the network [106] provides a path to send the media retrieval request from the user device [102] to the social network server unit [104] and also provides a path to retrieve and store, the required media from the said social networking server unit [104] on the said user device [102] .
  • the network [106] may be a wired network, a wireless network, or a combination thereof.
  • the network [106] may be a single network or a combination of two or more networks. Further, network [106] may include, but is not limited to, personal area network, local area network, metropolitan area network, wide area network, Internet, or any combination thereof.
  • a network may be a storage area network, virtual private network, enterprise private network or a combination thereof.
  • the user device [102] may be any electrical, electronic, electromechanical and computing device or equipment.
  • the user device [102] may include, but is not limited to, a mobile phone, smart phone, laptop, a general-purpose computer, desktop, personal digital assistant, tablet computer, wearable device or any other computing device in which a camera can be implemented.
  • the user device [102] contains at least one input means configured to receive an input from the user, a processor and a display unit configured to display at least the camera preview frame, media, etc. to the user.
  • the social networking server unit [104] may be a server of one or more social networking applications/platforms.
  • a “social networking platform” refers to a mobile or web application used for the purpose of social networking wherein users can interact with each other by means of text, audio, video or a combination thereof.
  • the social networking application provides many other features such as viewing and sharing content, read news, play games, shop, make payments, and any other features as may be obvious to a person skilled in the art.
  • FIG. 1 Although a limited number of user devices [102] and systems [108] are shown in Fig. 1, however, it will be appreciated by those skilled in the art that the invention encompasses use of multiple such user devices [102] and systems [108] . Further, although a limited number of social networking server units [104] are shown in Fig. 1, the invention encompasses use of multiple such social networking server units [104] .
  • the system [108] comprises, at least one camera unit [202] , at least one processing unit [204] , at least one memory unit [206] , and at least one transceiver unit [208] . All of these components/units are connected to each other, however, the same has not been shown in Fig. 2 for the sake of clarity.
  • the said system [108] is configured to provide at least one media capturing mode with the help of the said interconnection between the said camera unit [202] , the said processing unit [204] , the said memory unit [206] , and the said transceiver unit [208] .
  • the said camera unit [202] is configured to provide the real time data with respect to the current events occurring in the surrounding environment, known as the camera preview frame. An image/video may then be created from this real time data of the camera preview frame.
  • the components and functions of the camera unit [202] is further discussed with reference to Fig. 3.
  • the processing unit [204] is configured to perform an image analysis of the camera preview frame, wherein image analysis includes identification of at least one face, in real time, and determination of values of at least one real time imaging parameters associated with the said camera preview frame.
  • the transceiver unit [208] is configured to transmit a media retrieval request to at least one social networking server unit [104] , memory unit or a combination thereof.
  • This media retrieval request is at least based on said at least one identified face, at least one determined said imaging parameter or a combination thereof.
  • the media retrieval request includes a request to retrieve media as well as the metadata associated with the media.
  • the transceiver unit [208] is also configured to receive said requested media and the associated metadata of said requested media from at least one of the memory unit [206] , at least one said social networking server unit [104] or a combination thereof.
  • the memory unit [206] is configured to store the said media retrieved by the transceiver unit [208] .
  • the memory unit [206] is also configured to store one or more other media that may be pre-stored in the user device [102] .
  • the invention encompasses that the memory unit [206] also stores imaging parameters and detected one or more faces for each of the media pre-stored in the user device [102] .
  • the invention encompasses that the memory unit [206] may be a part of the memory of the user device [102] .
  • the memory unit [206] may be partitioned to store the pre-stored media in one part and the retrieved media in another part.
  • the said processing unit [204] is configured to process the retrieved media, to identify at least one face from the said retrieved media and to determine the at least one imaging parameter associated with the said retrieved media.
  • the said processing unit [204] is configured to match, at least, the face identified from the camera preview frame with face identified from the retrieved media; and match the imaging parameters of the camera preview frame with the imaging parameters of retrieved media.
  • processing unit [204] is configured to, calculate/generate at least one media capturing mode based on image analysis of said camera preview frame, image analysis of said retrieved at least one image and said metadata associated with said at least one image. Further, the processing unit [204] is also configured to generate in real time at least one transparent overlay, based on said media capturing mode.
  • FIG. 3 refers to an architecture of camera unit [202] , in accordance with exemplary embodiments of the present invention.
  • the said camera unit [202] comprises, at least on camera sensor unit [302] , at least one camera driver [304] , at least one camera HAL [306] , at least one camera framework [308] and at least one camera preview frame unit [310] .
  • the camera sensor unit [302] is configured to pick up the events in the surrounding of the camera unit [202] as raw real time data.
  • the camera driver [304] is configured to collect the raw real time data from the said camera sensor unit [302] and provide the same to the camera HAL [306] .
  • the camera HAL [306] is configured to process the said collected real time data and provide the same to the camera preview frame unit [310] .
  • the camera preview frame unit [310] configured to provide a graphical user interface to the user to provide a preview of the camera preview frame.
  • the invention encompasses that the camera preview frame unit [310] is configured to display the camera preview frame on the display unit of the electronic device.
  • the camera preview frame unit [310] is further configured to display best media capture icons and at least one media capturing mode.
  • the camera sensor unit [302] also comprises at least one light sensitive processing unit configured to measure and process the imaging parameters of the camera preview frame.
  • the camera framework [310] is configured to, provide a module to interact with the said camera sensor unit [302] , said camera driver [304] , said camera HAL [306] and the said camera preview frame [310] .
  • the said camera framework [308] is further configured to store files for input data, processing and the guiding mechanism.
  • FIG. 4 illustrates an exemplary method flow diagram [400] depicting method for recommendation of a media capturing mode, in accordance with exemplary embodiments of the present disclosure.
  • the invention encompasses that the method begins at step [402] .
  • the method begins when the user selects the smart media capturing icon, wherein the user may select a smart media capturing icon to view at least one media capturing mode over the camera preview frame.
  • the method comprises receiving at least one real time camera preview frame from the camera sensor unit [302] , which is further configured to receive at least one real time “preview of event” picking up by the camera sensor unit [302] .
  • the camera preview frame is associated with at least one imaging parameter including but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters. For instance, if the user opens a camera application on the user device [102] in a selfie mode, the camera preview frame may show the real-time frame of the user as the camera preview frame.
  • the method then proceeds to step [406] , wherein the image analysis of the said camera preview frame is performed.
  • the image analysis comprises the identification of at least one face from the said camera preview frame and determination of at least one imaging parameter such as a scene, an exposure, a face area, an ISO value or the like, related to the said camera preview frame.
  • the identification of at least one face from the said camera preview frame is done using one or more known facial recognition techniques.
  • the imaging parameters of the camera preview frame are determined using one or more known image analysis techniques.
  • the method comprises retrieving at least one image/media and a metadata associated with said at least one image/media, from one of a memory unit [206] , at least one social networking application server unit [102] and a combination thereof, based at least on said identified at least one face from the said camera preview frame [310] , the said determined imaging parameters of the said camera preview frame [310] or a combination thereof.
  • the said retrieved image is also associated with at least one imaging parameter which further includes but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters.
  • the method performs the image/media analysis of at least one said retrieved image.
  • the said image/media analysis of the said retrieved image further comprises identification of at least one face from the said retrieved image and determination of at least one imaging parameter related with the said retrieved image/media.
  • the said at least one imaging parameter further includes but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters of retrieved image/media.
  • step [412] wherein at least one media capturing mode [406] is recommended in real-time at the camera preview frame unit [310] .
  • This recommended media capturing mode is determined based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
  • the media capturing mode comprises at least one generated image/media output.
  • three media capturing modes are recommended in real time to the user, wherein each mode can be viewed by sliding left/right on the display of the user device. The method then terminates at step [414] .
  • the invention comprises the generation of at least one transparent overlay, which further comprises at least one media capturing mode.
  • the generated image/media of the media capturing mode is based on at least the calculated result of, imaging parameters of the said camera preview frame [310] matched with the imaging parameters of the said retrieved image.
  • the invention also encompasses that once the media capturing mode is displayed via the camera preview frame unit [310] , an input may be received from the user at the user device [102] , wherein the input is one of a positive indication and a negative indication.
  • the positive indication includes selection of one of the generated at least one transparent overlay/media capturing mode, and said negative indication includes a rejection of the generated at least one transparent overlay/media capturing mode.
  • the invention also includes, storing the positive indications for future references to provide refined/enhanced recommendation of the media capturing mode based on said stored positive indication.
  • the invention includes receiving the real time camera preview frame and performing image analysis thereof to identify at least one face and determine one or more imaging parameters of the camera preview frame. Thereafter, the invention includes analyzing the media stored at the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. This analysis includes determining one or more imaging parameters associated with each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. The analysis further includes identifying one or more faces in each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device.
  • At least one face identified in the camera preview frame is compared with the one or more faces identified in each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device.
  • a first set of media (having one or more media) is identified wherein the face identified in said first set of media is the same as the face identified in the camera preview frame. For instance, if a user A is identified in the camera preview frame, then the first set of media would include images/videos, etc. of the user A stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device.
  • the imaging parameters of the camera preview frame may be compared with the imaging parameters of each of the media in the identified first media set.
  • a second media set (comprising one or more media) is identified wherein each of the media in the second media set has similar imaging parameters when compared to the imaging parameters of the camera preview frame. For instance, if the camera preview frame contains a beach scene and has EV 4 then second media set would include images, videos, etc. that have a beach scene type and EV 3-4.
  • the metadata associated with each of the media in the second media set is analyzed to identify a third media set (subset of the second media set) , wherein the third media set comprises of one or more media with the most favorable metadata. For instance, the media with most number of likes or most positive comments may be selected.
  • This third media set is then displayed to the user as a transparent overlay above the camera preview frame.
  • FIG. 5 (a) illustrates an exemplary camera preview frame [502] , in accordance with exemplary embodiments of the present disclosure.
  • the camera preview frame as shown in fig. 5 (a) is associated with real time imaging parameters related to the real time event occurring in the surroundings of the said camera sensor unit [302] .
  • the said real time imaging parameters comprises one or more of a scene, an exposure, a face area and an ISO value of the said real time event.
  • the scene type for the camera preview frame shown in Fig. 5 (a) is determined to be indoors
  • face area is determined to be 1.41 FWHR (facial width to height ratio)
  • exposure values is determined to be EV 4.
  • FIG. 5 (b) illustrates an example transparent overlay [504] generated in accordance with exemplary embodiments of the present disclosure.
  • This overlay is generated based on the image analysis of the exemplary camera preview frame [502] , the image analysis of the media retrieved by the processing unit [204] and analysis of the metadata associated therewith. For instance, in this case the processing unit [204] retrieves those images from the memory unit [206] that have scene type indoors, face area in the range of 1.30-1.45 FWHR and exposure value in the range of EV 4-5.
  • FIG. 5 (c) illustrates an example of recommended media capturing mode [506] , in accordance with exemplary embodiments of the present disclosure.
  • the said media capturing mode [506] further comprises at least one generated image output that is displayed as an overlay above the camera preview frame. The user can therefore, view in real-time, the recommended media capturing mode and then decide whether they wish to select or use the recommended media capturing mode.

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Abstract

The present invention relates to methods and systems for recommending a media capturing mode. The method includes recommending at least one media capturing mode comprising, receiving, in real-time, a camera preview frame and performing image analysis of said camera preview frame wherein said image analysis comprises identifying at least one face from said camera preview frame. Thereafter, based on at least the face identified from the camera preview frame, at least one image and metadata therewith, is retrieved from one of a memory unit, at least one social networking application server unit and a combination thereof. Subsequently, image analysis of the retrieved image is performed and at least one media capturing mode is recommended in real-time, based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.

Description

SYSTEM AND METHOD FOR RECOMMENDING A MEDIA CAPTURING MODE TECHNICAL FIELD
The present invention generally relates to the field of image analysis and more particularly to a system and method for recommending at least one media capturing mode based on calculated imaging parameters.
BACKGROUND
This section is intended to provide information relating to field of the invention and thus any approach or functionality described below should not be assumed to be qualified as prior art merely by its inclusion in this section.
Capturing and sharing images, videos, etc. has been established as a form of expression and has become the most used feature in smartphones. In the past few years capturing images have gained wide popularity not just amongst young people but in people of every age group. Often, captured images are intended to present a flattering image of the person whose image is being clicked. These images may be captured on trips, during activities that are considered interesting or as a group photograph with people of same interest or in any other suitable situation.
Images can be captured with a number of variations like, at different angles, positions, in various styles and facial expressions etc. Captured images provide users, the control to present themselves in a better way to the world. With the increased trend of image capturing, various technologies have evolved that help the users take better pictures. For instance, features such as auto focus, auto zoom, exposure compensation, scene detection, multiple shooting modes, adjustable shutter speeds, etc. have been widely adapted in cameras to enhance the quality of photos/images being captured.
More recently, systems for tracking of focal point and suitable position of the light spot have been developed, wherein guided pilot light is used to focus on the subject of the photo to provide a better-quality picture/image. Further, other systems have been developed that use the facial expressions of a user to enable auto timer and help in media capturing according to psychological states of the user. Various other systems/solutions provide for suggestions to adjust camera position with respect to predefined region and subject whose image is to be captured; while there are also solutions for auto positioning of cameras with respect to the surrounding conditions to capture best possible image.
But the major drawbacks of these known technologies for improving the image capturing experience are either the dependency on additional hardware components to assist the user in matching best suitable conditions for capturing images and/or additional user efforts required to adjust the camera parameters in order to match the favorable conditions. Therefore, due to additional hardware configurations and manual inputs, a delay in time for capturing the images is introduced, which ultimately affects the quality of the output photos/images of the solutions.
Also, another limitation of the known solutions is that although the solutions provide certain suggestions to improve image capturing (such as tilt the camera by 15 degrees) , however, the user would still have to apply such suggested settings and check whether the desired output is achieved or if they like the changes suggested by the known solutions.
Therefore, the present techniques and solutions for improving image capturing are unable to suggest and capture the best possible images of the user without significant manual intervention. In view of these and other existing limitations, there is an imperative need to provide a more efficient method and system for suggesting best possible captured images/videos, etc.
SUMMARY
This section is intended to introduce certain objects and aspects of the disclosed method and system in a simplified form and is not intended to identify the key advantages or features of the present disclosure. In order to overcome the existing limitations of the known solutions, it is an object of the present invention to provide a system and method to provide an improved way to suggest or recommend enhanced media (images, videos, etc. ) to the user. It is another object of the present invention to provide a system and method to reduce user’s efforts in selecting personalized settings for capturing media in a particular environment. It is also an object of the present invention to provide a system and method to allow users to preview suggested media without the need to capture the media and discard it later. It is yet another object of the present invention to provide a system and method, to provide an overlay over camera preview to assist the user in comparing the resultant media from the current settings.
In order to achieve the afore-mentioned objectives, the present disclosure provides a method and system for recommending at least one media capturing mode. One aspect of the invention relates to a method to recommend at least one media capturing mode comprising, receiving, in real-time, a camera preview frame on at least one camera preview frame unit and performing image analysis of said camera preview frame wherein said image analysis comprises identifying at least one face from said camera preview frame. Thereafter, based on at least the face identified from the camera preview frame, at least one image and at least one metadata associated with said at least one image, is retrieved from one of a memory unit, at least one social networking application server unit and a combination thereof. Subsequently, image analysis of the retrieved image is performed. Lastly, the method includes recommending, in real-time, at least one media capturing mode, based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
Further, another aspect of the invention relates to a system to recommend at least one media capturing mode which comprises a camera unit configured to receive a camera preview frame on at least one camera preview frame unit. The system further comprises a processing unit, connected to said camera unit, the processing unit configured to perform an image analysis of said camera preview frame. This image analysis further comprises identifying at least one face from said camera preview frame and determining at least one imaging parameter of said camera preview frame. Further, the system comprises a transceiver unit connected to said camera unit and said processing unit, the transceiver unit configured to retrieve at least one image and at least one metadata associated with said at least one image, from one of a storage unit, at least one social networking application server unit and a combination thereof, based at least on said identified at least one face. The said processing unit is further configured to perform image analysis of said retrieved at least one image and recommend at least one media capturing mode, based on said image analysis of said camera preview frame and said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components, electronic components or circuitry commonly used to implement such components.
FIG. 1 illustrates a general overview of the implementation of the system for recommending at least one media capturing mode, in accordance with exemplary embodiments of the present disclosure.
FIG. 2 illustrates a block diagram of the system for recommending at least one media capturing mode, in accordance with exemplary embodiment of the present disclosure.
FIG. 3 illustrates an exemplary architecture of a camera unit, in accordance with exemplary embodiments of the present disclosure.
FIG. 4 illustrates an exemplary method flow diagram depicting method for recommending a media capturing mode, in accordance with exemplary embodiments of the present disclosure.
FIG. 5 (a) illustrates an example of a camera preview frame, in accordance with exemplary embodiments of the present disclosure.
FIG. 5 (b) illustrates an example transparent overlay generated in accordance with exemplary embodiments of the present disclosure.
FIG. 5 (c) illustrates an example of recommended media capturing mode, in accordance with exemplary embodiments of the present disclosure.
The foregoing shall be more apparent from the following more detailed description of the disclosure.
DETAILED DESCRIPTION
In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent, however, that embodiments of the present invention may be practiced without these specific details. Several features described hereafter can each be used independently of one another or with any combination of other features. An individual feature may not address any of the problems discussed above or might address only some of the problems discussed above.
Some of the problems discussed above might not be fully addressed by any of the features described herein.
The present invention provides a method and system which recommends at least one media capturing mode to assist user capturing the best possible media in the current environment or surroundings. To enable this, the present invention performs media/image analysis of the camera preview frame to determine, at least one imaging parameter and to identify at least one face associated with at least one said camera preview frame in real time. Based on the identified face or the determined real time imaging parameters or a combination thereof, the invention enables retrieving at least one media from at least one memory unit, at least one social networking server unit and a combination thereof. The present invention further performs media/image analysis to determine at least one imaging parameter associated with the said retrieved image. Thereafter, the identified real time imaging parameters of said camera preview frame are compared with the said identified imaging parameters of the said retrieved image. The present invention further generates a media capturing mode based on this comparison and displays the same as a transparent overlay to the user. The media capturing mode includes at least one calculated/generated image which is displayed over the camera preview frame. This assists the user in comparing the generated image with the live camera preview frame. The present invention further provides the user the facility, to see the generated image without the need to capture the media and discard it later. Also, the invention allows the user to see the media capturing mode and directly share/use such media capturing mode on a social networking platform and other users, without the need to save the media in the device. The present invention, therefore, adds a convenience aspect to capture enhanced and quick media. It also reduces the user’s efforts in adjusting the camera settings and capturing the media, by providing quick operation over camera preview frame without any delay and by providing the best possible, at least one generated image/media to the user.
As used herein, the “camera preview frame” comprises at least one real time preview of an event picked up by the camera sensor unit. Further the said real-time preview of an event comprises the preview of at least one real time imaging parameter. For instance, camera preview frame may refer to the preview generated by a camera and can be seen on the display of a user device when  the user opens a camera application.
As used herein, “media” refers to images, videos, animations, etc. and any other type of media that can be captured using a camera, as may be obvious to a person skilled in the art.
As used herein, the “transparent overlay” refers to a transparent layer of media that can be displayed on the user device over an existing display of camera preview frame unit, or a media or anything else displayed on the user device. The transparent overlay is displayed on the user device in a manner such that the underlying preview frame/media, etc. is partly visible. The transparent overlay generated by the invention comprises at least one real time media capturing mode generated with the reference of the camera preview frame.
As used herein, the “imaging parameters” comprises one or more parameters of a scene, an exposure, a face area, an ISO value etc. As used herein, the “image/media analysis” refers to determination of one or more imaging parameters and/or identification of at least one face.
As used herein, “metadata” includes number of likes on the media, number of times media opened, number of time media shared, media marked as favorite, number of comments on the media, types of the comments and the like. For instance, metadata of an image stored on a social networking platform server, may include the number of likes the image has received on a social networking platform, the number of times the user or his friends have shared the image on a social networking platform, etc. Similarly, metadata of an image stored on a user device may include whether or not the user has marked that image as favorite, the number of times the user has opened that image, etc.
As used herein, a “processing unit” or “processor” includes one or more processors, wherein processor refers to any logic circuitry for processing instructions. A processor may be a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor, a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits, Field
Programmable Gate Array circuits, any other type of integrated circuits, etc. The processor may perform signal coding data processing, input/output processing, and/or any other functionality that enables the working of the system according to the present disclosure. More specifically, the processor or processing unit is a hardware processor.
Referring to FIG. 1, a general overview of the implementation of the system for recommending a media capturing mode in accordance with exemplary embodiments of the present invention is shown. As shown in Fig. 1, the systems [108 (1) ] , [108 (2) ] , [108 (3) ] … [108 (n) ] (Collectively referred to as system [108] ) may be implemented in corresponding user devices [102 (1) ] , [102 (2) ] , [102 (3) ] … [102 (n) ] (Collectively referred to as user devices [102] ) . The user devices [102 (1) ] , [102 (2) ] , [102 (3) ] … [102 (n) ] are connected to one or more social networking server units [104 (1) ] , [104 (2) ] , [104 (3) ] … [104 (n) ] (Collectively referred to as social networking server units [104] ) via at least one network [106] . Further, the one or more user devices [104] may be connected to each other via the network [106] or another network. Also, the one or more social networking server units [104] may be connected to each other via the network [106] or any other network. The network [106] , provides a path to send the media retrieval request from the user device [102] to the social network server unit [104] and also provides a path to retrieve and store, the required media from the said social networking server unit [104] on the said user device [102] .
The network [106] may be a wired network, a wireless network, or a combination thereof. The network [106] may be a single network or a combination of two or more networks. Further, network [106] may include, but is not limited to, personal area network, local area network, metropolitan area network, wide area network, Internet, or any combination thereof. A network may be a storage area network, virtual private network, enterprise private network or a combination thereof.
The user device [102] may be any electrical, electronic, electromechanical and computing device or equipment. The user device [102] may include, but is not limited to, a mobile phone, smart  phone, laptop, a general-purpose computer, desktop, personal digital assistant, tablet computer, wearable device or any other computing device in which a camera can be implemented. The user device [102] contains at least one input means configured to receive an input from the user, a processor and a display unit configured to display at least the camera preview frame, media, etc. to the user.
The social networking server unit [104] may be a server of one or more social networking applications/platforms. As used herein, a “social networking platform” refers to a mobile or web application used for the purpose of social networking wherein users can interact with each other by means of text, audio, video or a combination thereof. The social networking application provides many other features such as viewing and sharing content, read news, play games, shop, make payments, and any other features as may be obvious to a person skilled in the art.
Although a limited number of user devices [102] and systems [108] are shown in Fig. 1, however, it will be appreciated by those skilled in the art that the invention encompasses use of multiple such user devices [102] and systems [108] . Further, although a limited number of social networking server units [104] are shown in Fig. 1, the invention encompasses use of multiple such social networking server units [104] .
Referring to FIG. 2 an architecture of system [108] , is shown in accordance with exemplary embodiments of the present invention. The system [108] comprises, at least one camera unit [202] , at least one processing unit [204] , at least one memory unit [206] , and at least one transceiver unit [208] . All of these components/units are connected to each other, however, the same has not been shown in Fig. 2 for the sake of clarity.
The said system [108] , is configured to provide at least one media capturing mode with the help of the said interconnection between the said camera unit [202] , the said processing unit [204] , the said memory unit [206] , and the said transceiver unit [208] .
The said camera unit [202] is configured to provide the real time data with respect to the current events occurring in the surrounding environment, known as the camera preview frame. An image/video may then be created from this real time data of the camera preview frame. The components and functions of the camera unit [202] is further discussed with reference to Fig. 3.
The processing unit [204] is configured to perform an image analysis of the camera preview frame, wherein image analysis includes identification of at least one face, in real time, and determination of values of at least one real time imaging parameters associated with the said camera preview frame.
The transceiver unit [208] , is configured to transmit a media retrieval request to at least one social networking server unit [104] , memory unit or a combination thereof. This media retrieval request is at least based on said at least one identified face, at least one determined said imaging parameter or a combination thereof. The media retrieval request includes a request to retrieve media as well as the metadata associated with the media. Further, the transceiver unit [208] , is also configured to receive said requested media and the associated metadata of said requested media from at least one of the memory unit [206] , at least one said social networking server unit [104] or a combination thereof.
The memory unit [206] is configured to store the said media retrieved by the transceiver unit [208] . The memory unit [206] is also configured to store one or more other media that may be pre-stored in the user device [102] . The invention encompasses that the memory unit [206] also stores imaging parameters and detected one or more faces for each of the media pre-stored in the user device [102] . The invention encompasses that the memory unit [206] may be a part of the memory of the user device [102] . The memory unit [206] may be partitioned to store the pre-stored media in one part and the retrieved media in another part.
Further, the said processing unit [204] is configured to process the retrieved media, to identify at least one face from the said retrieved media and to determine the at least one imaging parameter associated with the said retrieved media. In an embodiment, the said processing unit [204] is configured to match, at least, the face identified from the camera preview frame with face  identified from the retrieved media; and match the imaging parameters of the camera preview frame with the imaging parameters of retrieved media.
Further, the processing unit [204] is configured to, calculate/generate at least one media capturing mode based on image analysis of said camera preview frame, image analysis of said retrieved at least one image and said metadata associated with said at least one image. Further, the processing unit [204] is also configured to generate in real time at least one transparent overlay, based on said media capturing mode.
FIG. 3 refers to an architecture of camera unit [202] , in accordance with exemplary embodiments of the present invention. The said camera unit [202] comprises, at least on camera sensor unit [302] , at least one camera driver [304] , at least one camera HAL [306] , at least one camera framework [308] and at least one camera preview frame unit [310] .
The camera sensor unit [302] is configured to pick up the events in the surrounding of the camera unit [202] as raw real time data. The camera driver [304] is configured to collect the raw real time data from the said camera sensor unit [302] and provide the same to the camera HAL [306] . The camera HAL [306] is configured to process the said collected real time data and provide the same to the camera preview frame unit [310] . The camera preview frame unit [310] configured to provide a graphical user interface to the user to provide a preview of the camera preview frame. The invention encompasses that the camera preview frame unit [310] is configured to display the camera preview frame on the display unit of the electronic device. The camera preview frame unit [310] is further configured to display best media capture icons and at least one media capturing mode.
The camera sensor unit [302] also comprises at least one light sensitive processing unit configured to measure and process the imaging parameters of the camera preview frame.
Further, the camera framework [310] is configured to, provide a module to interact with the said camera sensor unit [302] , said camera driver [304] , said camera HAL [306] and the said camera preview frame [310] . The said camera framework [308] is further configured to store files for input data, processing and the guiding mechanism.
FIG. 4 illustrates an exemplary method flow diagram [400] depicting method for recommendation of a media capturing mode, in accordance with exemplary embodiments of the present disclosure. The invention encompasses that the method begins at step [402] . In an embodiment, the method begins when the user selects the smart media capturing icon, wherein the user may select a smart media capturing icon to view at least one media capturing mode over the camera preview frame.
At step [404] , the method comprises receiving at least one real time camera preview frame from the camera sensor unit [302] , which is further configured to receive at least one real time “preview of event” picking up by the camera sensor unit [302] . The camera preview frame is associated with at least one imaging parameter including but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters. For instance, if the user opens a camera application on the user device [102] in a selfie mode, the camera preview frame may show the real-time frame of the user as the camera preview frame.
The method then proceeds to step [406] , wherein the image analysis of the said camera preview frame is performed. The image analysis comprises the identification of at least one face from the said camera preview frame and determination of at least one imaging parameter such as a scene, an exposure, a face area, an ISO value or the like, related to the said camera preview frame. The identification of at least one face from the said camera preview frame is done using one or more known facial recognition techniques. Further, the imaging parameters of the camera preview frame are determined using one or more known image analysis techniques.
Further at step [408] , the method comprises retrieving at least one image/media and a metadata associated with said at least one image/media, from one of a memory unit [206] , at least one social networking application server unit [102] and a combination thereof, based at least on said identified at least one face from the said camera preview frame [310] , the said determined  imaging parameters of the said camera preview frame [310] or a combination thereof. The said retrieved image is also associated with at least one imaging parameter which further includes but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters.
At step [410] , the method performs the image/media analysis of at least one said retrieved image. The said image/media analysis of the said retrieved image further comprises identification of at least one face from the said retrieved image and determination of at least one imaging parameter related with the said retrieved image/media. The said at least one imaging parameter further includes but not limited to one or more of a scene, an exposure, a face area, an ISO value or the like associated parameters of retrieved image/media.
The method further proceeds to step [412] , wherein at least one media capturing mode [406] is recommended in real-time at the camera preview frame unit [310] . This recommended media capturing mode is determined based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image. The media capturing mode comprises at least one generated image/media output. In an embodiment, three media capturing modes are recommended in real time to the user, wherein each mode can be viewed by sliding left/right on the display of the user device. The method then terminates at step [414] .
Further, the invention comprises the generation of at least one transparent overlay, which further comprises at least one media capturing mode. The generated image/media of the media capturing mode is based on at least the calculated result of, imaging parameters of the said camera preview frame [310] matched with the imaging parameters of the said retrieved image.
The invention also encompasses that once the media capturing mode is displayed via the camera preview frame unit [310] , an input may be received from the user at the user device [102] , wherein the input is one of a positive indication and a negative indication. The positive indication includes selection of one of the generated at least one transparent overlay/media capturing mode, and said negative indication includes a rejection of the generated at least one transparent overlay/media capturing mode. The invention also includes, storing the positive indications for future references to provide refined/enhanced recommendation of the media capturing mode based on said stored positive indication.
In an embodiment, the invention includes receiving the real time camera preview frame and performing image analysis thereof to identify at least one face and determine one or more imaging parameters of the camera preview frame. Thereafter, the invention includes analyzing the media stored at the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. This analysis includes determining one or more imaging parameters associated with each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. The analysis further includes identifying one or more faces in each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. Subsequently, at least one face identified in the camera preview frame is compared with the one or more faces identified in each of the media stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device. As a result of this comparison, a first set of media (having one or more media) is identified wherein the face identified in said first set of media is the same as the face identified in the camera preview frame. For instance, if a user A is identified in the camera preview frame, then the first set of media would include images/videos, etc. of the user A stored in the social networking server units [104] and/or the memory unit [206] and/or the memory of the user device.
Thereafter, the imaging parameters of the camera preview frame may be compared with the imaging parameters of each of the media in the identified first media set. As a result of this comparison, a second media set (comprising one or more media) is identified wherein each of the media in the second media set has similar imaging parameters when compared to the imaging  parameters of the camera preview frame. For instance, if the camera preview frame contains a beach scene and has EV 4 then second media set would include images, videos, etc. that have a beach scene type and EV 3-4.
Subsequently, the metadata associated with each of the media in the second media set is analyzed to identify a third media set (subset of the second media set) , wherein the third media set comprises of one or more media with the most favorable metadata. For instance, the media with most number of likes or most positive comments may be selected. This third media set is then displayed to the user as a transparent overlay above the camera preview frame.
FIG. 5 (a) illustrates an exemplary camera preview frame [502] , in accordance with exemplary embodiments of the present disclosure. The camera preview frame as shown in fig. 5 (a) is associated with real time imaging parameters related to the real time event occurring in the surroundings of the said camera sensor unit [302] . The said real time imaging parameters comprises one or more of a scene, an exposure, a face area and an ISO value of the said real time event. For instance, the scene type for the camera preview frame shown in Fig. 5 (a) is determined to be indoors, face area is determined to be 1.41 FWHR (facial width to height ratio) and exposure values is determined to be EV 4.
FIG. 5 (b) illustrates an example transparent overlay [504] generated in accordance with exemplary embodiments of the present disclosure. This overlay is generated based on the image analysis of the exemplary camera preview frame [502] , the image analysis of the media retrieved by the processing unit [204] and analysis of the metadata associated therewith. For instance, in this case the processing unit [204] retrieves those images from the memory unit [206] that have scene type indoors, face area in the range of 1.30-1.45 FWHR and exposure value in the range of EV 4-5.
FIG. 5 (c) illustrates an example of recommended media capturing mode [506] , in accordance with exemplary embodiments of the present disclosure. The said media capturing mode [506] further comprises at least one generated image output that is displayed as an overlay above the camera preview frame. The user can therefore, view in real-time, the recommended media capturing mode and then decide whether they wish to select or use the recommended media capturing mode.
While considerable emphasis has been placed herein on the disclosed embodiments, it will be appreciated that many embodiments can be made and that many changes can be made to the embodiments without departing from the principles of the present invention. These and other changes in the embodiments of the present invention will be apparent to those skilled in the art, whereby it is to be understood that the foregoing descriptive matter to be implemented is illustrative and non-limiting.

Claims (10)

  1. A method for recommending at least one media capturing mode, the method comprising:
    - Receiving, in real-time, a camera preview frame at a camera unit [202] ;
    - Performing, by a processing unit [204] , an image analysis of said camera preview frame, wherein said image analysis comprises identifying at least one face from said camera preview;
    - Retrieving, by a transceiver unit [208] , at least one image and at least one metadata associated with said at least one image, from one of a memory unit, at least one social networking application server unit and a combination thereof, based at least on said identified at least one face;
    - Performing, by the processing unit [204] , an image analysis of said retrieved at least one image; and
    - Recommending, in real-time, by the processing unit [204] , at least one media capturing mode, based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
  2. The method as claimed in claim 1, wherein performing the image analysis of said camera preview frame further comprises determining at least one imaging parameter of said camera preview frame.
  3. The method as claimed in claim 2, wherein said at least one imaging parameter comprises one or more of a scene, an exposure, a face area and an ISO value of said camera preview frame.
  4. The method as claimed in claim 1, wherein performing the image analysis of said retrieved at least one image further comprises determining at least one imaging parameter of said retrieved at least one image.
  5. The method as claimed in claim 4, wherein said at least one imaging parameter comprises one or more of a scene, an exposure, a face area and an ISO value of said at least one image.
  6. The method as claimed in claim 1, further comprising:
    - generating at least one transparent overlay comprising said at least one media capturing mode; and
    - displaying said generated transparent overlay on said camera preview frame.
  7. The method as claimed in claim 6, further comprising receiving an input, wherein said input comprises one of a positive indication and a negative indication, wherein said positive indication includes selection of one of the generated at least one overlay and said negative indication includes a rejection of the generated at least one overlay.
  8. The method as claimed in claim 7 further comprising:
    - refining the recommendation based on the positive indication.
  9. A system for recommending at least one media capturing mode, the system comprising:
    - a camera unit [202] configured to receive a camera preview frame;
    - a processing unit [204] , connected to said camera unit [202] , the processing unit [204] configured to:
    Perform an image analysis of said camera preview frame, wherein said image analysis further comprises identifying at least one face from said camera preview frame; and
    - a transceiver unit [208] connected to said camera unit [202] and said processing unit [204] , the transceiver unit [208] configured to retrieve at least one image and at least one metadata associated with said at least one image from one of a memory unit [206] , at least one social networking application server unit [104] and a combination thereof, based at least on said identified at least one face,
    wherein said processing unit [204] is further configured to:
    perform image analysis of said retrieved at least one image, and
    recommend at least one media capturing mode, based on said image analysis of said camera preview frame, said image analysis of said retrieved at least one image and said metadata associated with said at least one image.
  10. The system as claimed in claim 9, wherein performing the image analysis of said camera preview frame further comprises determining at least one imaging parameter of said camera preview frame.
PCT/CN2020/089662 2019-07-17 2020-05-11 System and method for recommending a media capturing mode WO2021008208A1 (en)

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