US20200125837A1 - System and method for generating a facial representation - Google Patents
System and method for generating a facial representation Download PDFInfo
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- US20200125837A1 US20200125837A1 US16/721,954 US201916721954A US2020125837A1 US 20200125837 A1 US20200125837 A1 US 20200125837A1 US 201916721954 A US201916721954 A US 201916721954A US 2020125837 A1 US2020125837 A1 US 2020125837A1
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Definitions
- the present disclosure relates generally to the analysis of multimedia content, and more specifically to generating facial representations of a user associated with a user device.
- Existing solutions provide several tools to identify users' preferences. Some existing solutions actively require an input from the users to specify their interests. However, profiles generated for users based on their inputs may be inaccurate, as the users tend to provide only their current interests, or otherwise only provide partial information due to privacy concerns. For example, a user submitting a list of musical interests for a social media account may include only recently listened to bands or songs rather than all bands or songs the user enjoys.
- ⁇ олователи offer services allowing users to create customized user profiles.
- Such customized user profiles allow users to express their interests, personalities, and appearances.
- the customized user profiles often allow users to create facial or other image-based representations or avatars.
- Some image-based representations may be made based on user inputs (e.g., selections of body types, body parts, skin color, etc.), while other representations may be automatically created based on images of a user.
- Existing solutions for automatically creating facial or other representations of users face challenges in analyzing and representing combinations of facial features unique to particular users.
- the embodiments disclosed herein include a method for generating a facial representation.
- the method includes identifying, via at least one data source, at least one multimedia content element; generating at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyzing the generated signatures to determine a cluster of signatures of facial concepts; and generating, based on the cluster of facial concept signatures, a facial representation of the user.
- the embodiments disclosed herein also include a non-transitory computer readable medium having stored thereon instructions for causing a processing system to perform a method for generating a facial representation, wherein the instructions cause the processing system to: identify, via at least one data source, at least one multimedia content element; generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyze the generated signatures to determine a cluster of signatures of facial concepts; and generate, based on the cluster of facial concepts, a facial representation.
- the embodiments disclosed herein also include a system for generating a facial representation.
- the system comprises: a processing system; and a memory, wherein the memory contains instructions that, when executed by the processing system, configure the system to: identify, via at least one data source, at least one multimedia content element; generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyze the generated signatures to determine a cluster of signatures of facial concepts; and generate, based on the cluster of facial concepts, a facial.
- FIG. 1 is a network diagram utilized to describe the various embodiments disclosed herein.
- FIG. 2 is a flowchart illustrating a method for generating a user profile including a facial representation of a user according to an embodiment.
- FIG. 3 is a flowchart illustrating a method for analyzing a plurality of multimedia content elements according to an embodiment.
- FIG. 4 is a block diagram depicting the basic flow of information in the signature generator system.
- FIG. 5 is a diagram showing the flow of patches generation, response vector generation, and signature generation in a large-scale speech-to-text system.
- FIG. 6 is a flowchart illustrating a method for determining a context based on multimedia content elements according to an embodiment.
- FIG. 7 is a block diagram of an interest analyzer according to an embodiment.
- the disclosed embodiments include a system and method for generating a representation of a face of a user based on multimedia content elements.
- a plurality of multimedia content elements existing therein may be identified.
- At least one signature is generated for each multimedia content element.
- Each of the generated signatures represents a concept.
- the concepts are correlated with respect to the generated signatures to determine a cluster of facial concepts associated with the user.
- a facial representation of the user is generated based on the correlation.
- the facial representation includes a list of facial features or at least one signature.
- the data source from which each multimedia content element was extracted may be identified.
- metadata associated with each multimedia content element may be identified.
- a user profile including the facial representation may be generated, and the generated user profile may be stored in a data storage unit accessible by a server, the user device, a search engine, a combination thereof, and so on.
- FIG. 1 shows an example network diagram 100 utilized to describe the various disclosed embodiments.
- a network 110 is used to communicate between different parts of the network diagram 100 .
- the network 110 may be the Internet, the world-wide-web (WWW), a local area network (LAN), a wide area network (WAN), a metro area network (MAN), and other networks capable of enabling communication between elements of the network diagram 100 .
- WWW world-wide-web
- LAN local area network
- WAN wide area network
- MAN metro area network
- the user device 120 may be, but is not limited to, a personal computer (PC), a personal digital assistant (PDA), a mobile phone, a smart phone, a tablet computer, an electronic wearable device (e.g., glasses, a watch, etc.), a smart television, or any other wired or mobile device equipped with browsing, viewing, capturing, storing, listening, filtering, and managing capabilities enabled as further discussed herein below.
- PC personal computer
- PDA personal digital assistant
- mobile phone e.g., a smart phone
- tablet computer e.g., a tablet computer
- an electronic wearable device e.g., glasses, a watch, etc.
- smart television e.g., a smart television, or any other wired or mobile device equipped with browsing, viewing, capturing, storing, listening, filtering, and managing capabilities enabled as further discussed herein below.
- the user device 120 may further include an interest analyzer 125 installed thereon.
- the interest analyzer 125 may be a dedicated application, script, or any program code stored in a memory of the user device 120 and is executable, for example, by a processing system (e.g., microprocessor) of the user device 120 .
- the interest analyzer 125 may be pre-installed in the user device 120 .
- the interest analyzer 125 may be downloaded from an application repository (not shown) such as, for example, the AppStore®, Google Play®, or any repositories hosting software applications.
- the interest analyzer 125 may be configured to perform some or all of the processes performed by a server 130 and disclosed herein.
- the interest analyzer 125 may be configured to, e.g., generate facial representations.
- the user device 120 includes a local storage 127 for storing multimedia content elements, concepts, signatures of multimedia content elements, or a combination thereof. It should be noted that only one user device 120 and one interest analyzer 125 are discussed with respect to FIG. 1 merely for the sake of simplicity and without limitation on the disclosure.
- a data warehouse 150 for storing multimedia content elements associated with a user of the user device.
- the data warehouse 150 may be associated with a social networking website or entity utilized by a user of the user device 120 .
- the data warehouse 150 may be a cloud-based storage accessible by the user device 120 .
- either or both of the user device 120 and a server 130 communicates with the data warehouse 150 through the network 110 . Such communication may be subject to an approval to be received from the user device 120 .
- either or both of the user device 120 and the server 130 is further communicatively connected to a signature generator system (SGS) 140 and to a deep-content classification (DCC) system 170 through the network 110 .
- SGS signature generator system
- DCC deep-content classification
- each of the DCC system 170 and the SGS 140 may be embedded in the server 130 or the user device 120 .
- the SGS 140 may further include a plurality of computational cores configured for signature generation, where each computational core is at least partially statistically independent from the other computational cores.
- each of the user device 120 and the server 130 typically includes a processing system (not shown) coupled to a memory (not shown). The memory contains instructions that can be executed by the processing system.
- the server 130 upon receiving access to one or more storage units associated with the user of the user device 120 , the server 130 is configured to identify multimedia content elements stored therein.
- the storage units may be the web sources 160 , the local storage 127 of the user device 120 , both, or any other storage including multimedia content elements associated with a user of the user device 120 .
- a multimedia content element may be, but is not limited to, an image, a graphic, a video stream, a video clip, an audio stream, an audio clip, a video frame, a photograph, an image of signals (e.g., spectrograms, phasograms, scalograms, etc.), a combination thereof, or a portion thereof.
- the server 130 is configured to receive multimedia content elements from the user device 120 accompanied by a request to generate a user profile respective thereof. With this aim, the server 130 sends each received multimedia content element to the SGS 140 , to the DCC system 170 , or to both.
- the decision which is used e.g., by the SGS 140 , the DCC system 170 , or both
- the SGS 140 receives a multimedia content element and returns at least one signature for the received multimedia content element.
- the generated signature(s) may be robust to noise and distortion.
- the SGS 140 may include a plurality of computational cores, where each computational core is at least partially statistically independent of the other computational cores. The process for generating the signatures is discussed in detail herein below.
- the SGS 140 may send the generated signature(s) to the server 130 .
- the server 130 is configured to search for similar multimedia content elements in a data warehouse. The process of matching between multimedia content elements is discussed in detail below with respect to FIGS. 4 and 5 .
- the server 130 is configured to analyze the similar multimedia content elements found during the search with respect to the signatures in order to determine a cluster of facial concepts associated with the user of the user device 120 .
- the analysis may include identification of the source in which each multimedia content element was identified.
- the sources from which the multimedia content elements were identified may be relevant in determining whether each multimedia content element shows the user's face or facial features.
- an image captured by the user device 120 using a camera located in the screen-side of the user device 120 is more likely to include a facial image of the user than an image extracted from a web source associated with a social network in which the user has an account in (such an image may feature, for example, the user's entire body, with only a small portion of the image illustrating the user's face).
- Metadata associated with each multimedia content element may by identified by the server 130 .
- the metadata may include, but is not limited to, a time pointer associated with the capture or upload of each multimedia content element, a location pointer associated with the capture or upload of each multimedia content element, one or more tags added to each multimedia content element, a combination thereof, and so on.
- such metadata may be analyzed, and the results of the metadata analysis may be utilized to, e.g., determine whether the multimedia content element descriptive of optimally descriptive of the user's facial features.
- a photo taken at 11:00 PM in an outdoor park may be determined not to be optimally descriptive of a user's face or facial features.
- a photo associated with the tag “self ie” may be determined to be optimally descriptive of the user's facial features.
- the analysis of the received multimedia content element may further be based on a concept structure (hereinafter referred to as “concept”).
- a concept is a collection of signatures representing elements of the unstructured data and metadata describing the concept.
- the concept may be a signature-reduced cluster of related signatures.
- a ‘Superman concept’ is a signature-reduced cluster of signatures describing elements (e.g., multimedia elements) related to, e.g., a Superman cartoon: a set of metadata representing proving textual representation of the Superman concept.
- a query is sent to the DCC system 170 to match the received multimedia content element to at least one concept.
- the identification of a concept matching the received multimedia content element includes matching at least one signature generated for the received multimedia content element (e.g., signatures generated either by the SGS 140 or by the DCC system 170 ) and comparing the element's signatures to signatures representing a concept structure. The matching can be performed across all concept structures maintained by the system DCC 170 .
- a correlation for matching concept structures is performed to generate a facial representation of a user that best describes the user's face.
- the correlation can be achieved by identifying a ratio between signatures' sizes, a spatial location of each signature, using probabilistic models, or a combination thereof.
- the facial representation may be, but is not limited to, a list of features, at least one representative signature representing facial features, and the like.
- the server 130 is configured to generate a facial representation of the user.
- the facial representation may include a cluster of signatures or the list of facial features.
- generating the facial representation may include generating a cluster of signatures representing facial concepts associated with the user of the user device 120 based on the at least one representative signature.
- the facial concepts include concept structures related to facial features such as, but not limited to, eyes, hair, mouth, nose, eyebrows, forehead, ears, cheeks, forehead, facial hair, and the like.
- generating the facial representation may include determining textual representations of facial features of the user and generating a list based thereon.
- the determined textual representations may include textual multimedia content elements associated with any or all of the at least one representative signature.
- the facial representation may be generated based on multimedia content elements that are determined as optimally describing the face of the user.
- the optimally descriptive multimedia content elements may include images of, but not limited to, a nose, hair, eyes, a mouth, facial hair, eyebrows, a forehead, cheeks, a chin, birth marks, and the like.
- the facial representation may be sent for storage in, for example, the data warehouse 150 .
- generating the facial representation may include analyzing the multimedia content elements featuring the face of the user and determining, based on the analysis, the optimally descriptive multimedia content elements.
- the analysis may be based on the analysis of the signatures of the multimedia content elements featuring the face of the user.
- determining whether each multimedia content element is an optimally descriptive multimedia content element may be based on, but not limited to, a size of the face relative to the entire multimedia content, a number of facial features illustrated by the multimedia content element, an angle of the view of the face, whether a portion or all of the face is obstructed or otherwise unclear, a combination thereof, and the like.
- the optimally descriptive multimedia contents may be determined based on one or more thresholds such as, but not limited to, a pixel threshold, a threshold number of facial features, a threshold angle, a combination thereof, and the like.
- determining whether a multimedia content element is optimally descriptive may be further based on metadata associated with the multimedia content element.
- an image in which only the middle portion of a forehead of the user is shown may be determined to not be an optimally descriptive multimedia content element because no entire facial feature is shown.
- a portion of a video showing a close up shot of the front of the user's face including eyes, a nose, a mouth, and a beard may be determined to be an optimally descriptive multimedia content element.
- an image showing a back isometric view of the user's face may be determined as not being an optimally descriptive multimedia content element.
- signatures may be generated by a signature generator (e.g., the signature generator 710 discussed further herein below with respect to FIG. 7 ).
- An example block diagram of an interest analyzer 125 installed on a user device 120 is described further herein below with respect to FIG. 7 .
- the signatures may be generated for multimedia content elements stored in the data sources 150 , in the local storage 127 of the user device 120 , or in a combination thereof.
- FIG. 2 depicts an example flowchart 200 illustrating a method for generating a user profile including a facial representation according to an embodiment.
- the method may be performed by a server (e.g., the server 130 ).
- the method may be performed by an interest analyzer (e.g., the interest analyzer 125 installed on the user device 120 ).
- multimedia content elements are identified through data sources associated with a user of a user device.
- the multimedia content elements may be identified based on a request for creating a user profile.
- the request may indicate, for example, particular multimedia content elements to be identified, data sources in which the multimedia content elements may be identified, metadata tags of multimedia content elements to be identified, combinations thereof, and the like.
- the data sources may include, but are not limited to, web sources (e.g., the web sources 160 ), a local storage (e.g., the local storage 127 of the user device 120 or a local storage associated with the server 130 ), a combination thereof, and the like.
- S 210 may include pre-filtering multimedia content elements that are unrelated to the user's face or to faces generally.
- S 210 may further include analyzing metadata tags associated with multimedia content elements in the data sources to identify multimedia content elements featuring the user's face.
- tags associated with a multimedia content element indicate that the multimedia content element does not show a person or, in particular, does not show the user, the multimedia content element may be pre-filtered out.
- the pre-filtering may reduce subsequent usage of computational resources due to, e.g., signature generation, concept correlation, and the like.
- At S 220 at least one signature is generated for each identified multimedia content element.
- S 220 may include generating a signature for portions of any or all of the multimedia content elements.
- Each signature represents a concept associated with the multimedia content element. For example, a signature generated for a multimedia content element featuring a man in a costume may represent at least a “Batman®” concept.
- the signature(s) are generated by a signature generator (e.g., the SGS 140 or the signature generator 710 ) as described herein below with respect to FIGS. 4 and 5 .
- the identified multimedia content elements are analyzed based on the signatures.
- the analysis includes determining a context of the identified multimedia content elements related to the user's face.
- the analysis includes determining, based on the context, multimedia content elements that optimally describe the user's face and generating a cluster including signatures representing the optimally descriptive multimedia content elements. Determining contexts of multimedia content elements based on signatures is described further herein below with respect to FIG. 3 .
- a facial representation of the user of the user device is generated.
- generating the facial representation may include generating a cluster of signatures including signatures associated with multimedia content elements that optimally describe the face of the user as described further herein above with respect to FIG. 1 .
- generating the facial representation may include filtering out multimedia content elements or portions thereof that are not related to the user's face.
- generating the facial representation may include determining, based on the optimally descriptive multimedia content elements, a list of facial features.
- the list of facial features may include a plurality of textual multimedia content elements associated with any of the optimally descriptive multimedia content elements.
- the facial representation is associated with a user profile of the user of the user device.
- S 250 includes creating a user profile and associating the facial representation with the generated user profile.
- creating the user profile may include analyzing a plurality of multimedia content elements associated with the user to determine information related to the user such as, for example, interests of the user, contacts of the user (e.g., friends, family, and acquaintances), events the user has attended, a profession of the user, and the like.
- An example method and system for creating user profiles based on analysis of multimedia content elements is described further in U.S. patent application Ser. No. 15/206,711, assigned to the common assignee, which is hereby incorporated by reference for all that it contains.
- FIG. 3 depicts an example flowchart S 230 illustrating a method for analyzing a plurality of multimedia content elements and determining contexts of the multimedia content elements according to an embodiment.
- the method is performed using signatures generated for the multimedia content elements by a signature generator system.
- At S 310 at least one concept structure matching the multimedia content elements is identified.
- the concept structure is identified based on the signatures of the multimedia content elements.
- S 310 may include querying a DCC system (e.g., the DCC system 170 ) using the signatures generated for the multimedia content elements.
- the metadata of the matching concept structure is used for correlation between a first multimedia content element and at least a second multimedia content element of the plurality of multimedia content elements.
- a source of each multimedia content element is identified.
- the source of each multimedia content element may be indicative of the content or the context of the multimedia content element.
- S 320 may further include determining, based on the source of each multimedia content element, at least one potential context of the multimedia content element.
- each source may be associated with a plurality of potential contexts of multimedia content elements.
- potential contexts may include, but are not limited to, “basketball,” “the Chicago Bulls®,” “the Golden State Warriors®,” “the Cleveland Cavaliers®,” “NBA,” “WNBA,” “March Madness,” and the like.
- a context of the multimedia content elements is determined.
- the context may be determined based on the correlation between a plurality of concepts related to multimedia content elements.
- the context may be further based on relationships between the multimedia content elements. Determining contexts of multimedia content elements based on concepts is described further herein below with respect to FIG. 6 .
- a cluster including signatures related to multimedia content elements that optimally describe the user's face is generated.
- S 350 includes matching the generated signatures to a signature representing the determined context. Signatures matching the context signature above a predefined threshold may be determined to represent multimedia content elements that optimally describe the user's face.
- the cluster may be a signature reduced cluster.
- the signatures are based on a single frame, leading to certain simplification of the computational cores generation.
- the Matching System is extensible for signatures generation capturing the dynamics in-between the frames.
- the server 130 is configured with a plurality of computational cores to perform matching between signatures.
- the Signatures' generation process is now described with reference to FIG. 5 .
- the first step in the process of signatures generation from a given speech-segment is to breakdown the speech-segment to K patches 14 of random length P and random position within the speech segment 12 .
- the breakdown is performed by the patch generator component 21 .
- the value of the number of patches K, random length P and random position parameters is determined based on optimization, considering the tradeoff between accuracy rate and the number of fast matches required in the flow process of the server 130 and SGS 140 .
- all the K patches are injected in parallel into all computational Cores 3 to generate K response vectors 22 , which are fed into a signature generator system 23 to produce a database of Robust Signatures and Signatures 4 .
- LTU leaky integrate-to-threshold unit
- ⁇ is a Heaviside step function
- w ij is a coupling node unit (CNU) between node i and image component j (for example, grayscale value of a certain pixel j)
- kj is an image component ‘j’ (for example, grayscale value of a certain pixel j)
- Th X is a constant Threshold value, where ‘x’ is ‘S’ for Signature and ‘RS’ for Robust Signature; and Vi is a Coupling Node Value.
- Threshold values Th X are set differently for Signature generation and for Robust Signature generation. For example, for a certain distribution of Vi values (for the set of nodes), the thresholds for Signature (Th S ) and Robust Signature (Th RS ) are set apart, after optimization, according to at least one of the following criteria:
- a Computational Core generation is a process of definition, selection, and tuning of the parameters of the cores for a certain realization in a specific system and application. The process is based on several design considerations, such as:
- the Cores should be optimally designed for the type of signals, i.e., the Cores should be maximally sensitive to the spatio-temporal structure of the injected signal, for example, and in particular, sensitive to local correlations in time and space.
- a core represents a dynamic system, such as in state space, phase space, edge of chaos, etc., which is uniquely used herein to exploit their maximal computational power.
- the Cores should be optimally designed with regard to invariance to a set of signal distortions, of interest in relevant applications.
- the generated signatures are analyzed to determine a correlation between the signatures of the multimedia content elements or portions thereof.
- S 630 includes determining correlations between concepts of the multimedia content elements.
- the correlations between concepts are determined by identifying a ratio between signatures' sizes, a spatial location of each signature, and so on using probabilistic models.
- Each signature represents a concept and is generated for a multimedia content element.
- identifying, for example, the ratio of signatures' sizes may also indicate the ratio between the size of their respective multimedia elements.
- a context of the plurality of multimedia content elements is determined. In an embodiment, it may further be determined whether the context is a strong context.
- a context is determined as the correlation between a plurality of concepts.
- a strong context is determined when there are multiple concepts, i.e., a plurality of concepts that satisfy the same predefined condition.
- signatures generated for multimedia content elements of a smiling child with a Ferris wheel in the background are analyzed.
- the concept of the signature of the smiling child is “amusement” and the concept of a signature of the Ferris wheel is “amusement park”.
- the relationship between the signatures of the child and of the Ferris wheel may be further analyzed to determine that the Ferris wheel is bigger than the child.
- the relation analysis results in a determination that the Ferris wheel is used to entertain the child. Therefore, the determined context may be “amusement.”
- one or more typically probabilistic models may be utilized to determine the correlation between signatures representing concepts.
- the probabilistic models determine, for example, the probability that a signature may appear in the same orientation and in the same ratio as another signature.
- the analysis may be further based on previously analyzed signatures.
- the context can be determined further based on a ratio of the sizes of the objects in the multimedia content elements and their relative spatial orientations (i.e., position, arrangement, direction, combinations thereof, and the like). For example, based on an image containing multimedia content elements related to bears having different sizes, a context may be determined as “family of bears.” As another example, based on an image containing multimedia content elements of people facing the same direction (toward a camera) and having similar sizes as well as a banner for a school saying “graduation,” a context may be determined as “graduation photograph.”
- the determined context is stored in, e.g., the data warehouse 150 .
- a plurality of multimedia content elements contained in an image is identified.
- multimedia content elements of the singer “Adele”, “red carpet”, and a “Grammy” award are shown in the image.
- Signatures are generated for each of the multimedia content elements.
- the correlation between “Adele”, “red carpet”, and a “Grammy” award is determined with respect to the signatures and the context of the image is determined based on the correlation.
- such a context may be “Adele Winning the Grammy Award”.
- the determined context is stored in a data warehouse.
- multimedia content elements related to objects such as a “glass”, a “cutlery”, and a “plate” are identified.
- Signatures are generated for the glass, cutlery, and plate multimedia content elements.
- the correlation between the concepts represented by the signatures is determined based on previously analyzed signatures of glasses, cutlery, and plates. According to this example, as all of the concepts related to the “glass”, the “cutlery”, and the “plate” satisfy the same predefined condition, a strong context is determined. Based on the correlation among the multimedia content elements and the relative sizes and orientations of the objects illustrated by the multimedia content elements, the context of such concepts is determined to be a “table set”.
- FIG. 7 depicts an example block diagram of an interest analyzer 125 installed on the user device 120 according to an embodiment.
- the interest analyzer 125 may be configured to access an interface of a user device or of a server.
- the interest analyzer 125 is further communicatively connected to a processing system (PS, not shown) such as a processor and to a memory (mem).
- PS processing system
- the memory contains therein instructions that, when executed by the processing system, configures the interest analyzer 125 as further described hereinabove and below.
- the interest analyzer 125 may further be communicatively connected to a storage unit (e.g., the local storage 127 of the user device 120 or a storage of the server 130 ) including a plurality of multimedia content elements.
- a storage unit e.g., the local storage 127 of the user device 120 or a storage of the server 130
- the interest analyzer 125 includes a signature generator (SG) 710 , a data storage (DS) 720 , a recommendations engine 730 , and a facial recognizer (FR) 740 .
- the signature generator 710 may be configured to generate signatures for multimedia content elements.
- the signature generator 710 includes a plurality of computational cores as discussed further herein above, where each computational core is at least partially statistically independent of the other computations cores.
- the data storage 720 may store a plurality of multimedia content elements, a plurality of concepts, signatures for the multimedia content elements, signatures for the concepts, or a combination thereof.
- the data storage 720 may include a limited set of concepts relative to a larger set of known concepts. Such a limited set of concepts may be utilized when, for example, the data storage 720 is included in a device having a relatively low storage capacity such as, e.g., a smartphone or other mobile device.
- the recommendations engine 730 may be configured to generate contextual insights based on multimedia content elements related to the user interest, to query sources of information (including, e.g., the data storage 720 or another data source), and to cause a display of recommendations on the user device 120 .
- the interest analyzer 125 is configured to receive at least one multimedia content element.
- the interest analyzer 125 is configured to initialize a signatures generator (SG) 710 to generate at least one signature for the received at least one multimedia content element.
- SG signatures generator
- the interest analyzer 125 is configured to initialize the facial recognizer 740 to generate a facial representation.
- the facial representation may be generated based on signatures generated for the received at least one multimedia content element.
- the facial recognizer 740 may be configured to analyze the received at least one multimedia content element based on the generated signatures. Based on the analysis, the facial recognizer 740 is configured to determine optimally descriptive multimedia content elements representing facial features as described further herein above. Based on the optimally descriptive multimedia content elements, the facial recognizer 740 is configured to generate the facial representation.
- the facial representation may include a plurality or cluster of signatures associated with the optimally descriptive multimedia content elements.
- the facial representation may include a list of facial features illustrated by the optimally descriptive multimedia content elements.
- the memory further contains instructions to query a user profile of the user stored in a data storage (DS) 720 to determine a user interest.
- the memory further contains instructions to generate a contextual insight based on the user interest and the at least one signature.
- a recommendations engine 730 is initialized to search for one or more content items that match the contextual insight.
- the matching content items may be provided by the recommendations engine 730 to the user as recommendations via the interface.
- Each of the recommendations engine 730 and the signature generator 710 can be implemented with any combination of general-purpose microprocessors, multi-core processors, microcontrollers, digital signal processors (DSPs), field programmable gate array (FPGAs), programmable logic devices (PLDs), controllers, state machines, gated logic, discrete hardware components, dedicated hardware finite state machines, or any other suitable entities that can perform calculations or other manipulations of information.
- DSPs digital signal processors
- FPGAs field programmable gate array
- PLDs programmable logic devices
- controllers state machines, gated logic, discrete hardware components, dedicated hardware finite state machines, or any other suitable entities that can perform calculations or other manipulations of information.
- the recommendation engine 730 , the signature generator 710 , or both can be implemented using an array of computational cores having properties that are at least partly statistically independent from other cores of the plurality of computational cores.
- the computational cores are further discussed below.
- the processes performed by the recommendation engine 730 , the signature generator 710 , or both can be executed by a processing system of the user device 120 or server 130 .
- processing system may include machine-readable media for storing software.
- Software shall be construed broadly to mean any type of instructions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. Instructions may include code (e.g., in source code format, binary code format, executable code format, or any other suitable format of code). The instructions, when executed by the one or more processors, cause the processing system to perform the various functions described herein.
- FIG. 7 is described with respect to an interest analyzer 125 included in the user device 120
- any or all of the components of the interest analyzer 125 may be included in another system or systems (e.g., the server 130 , the signature generator system 140 , or both) and utilized to perform some or all of the tasks described herein without departing from the scope of the disclosure.
- the interest analyzer 125 operable in the user device 120 may send multimedia content elements to the signature generator system 140 and may receive corresponding signatures therefrom.
- the user device 120 may send signatures to the server 130 and may receive corresponding recommendations or concepts therefrom.
- the interest analyzer 125 may be included in the server 130 and may provide recommendations to the user device 120 based on multimedia content elements identified by or received from the user device 120 .
- a facial representation may be generated for a dog whose ears, mouth, nose, fur, and eyes are shown in one or more pictures or videos.
- a non-transitory computer readable medium is any computer readable medium except for a transitory propagating signal.
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Abstract
A system and method for generating a facial representation. The method includes identifying, via at least one data source, at least one multimedia content element; generating at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyzing the generated signatures to determine a cluster of signatures of facial concepts; and generating, based on the cluster of facial concept signatures, a facial representation.
Description
- This application claims the benefit of U.S. Provisional Patent Application No. 62/289,187 filed on Jan. 30, 2016. This application is also a continuation-in-part (CIP) of U.S. patent application Ser. No. 14/509,558 filed on Oct. 8, 2014, now pending, which is a continuation of U.S. patent application Ser. No. 13/602,858 filed on Sep. 4, 2012, now U.S. Pat. No. 8,868,619. The Ser. No. 13/602,858 application is a continuation of U.S. patent application Ser. No. 12/603,123 filed on Oct. 21, 2009, now U.S. Pat. No. 8,266,185. The Ser. No. 12/603,123 application is a continuation-in-part of:
- (1) U.S. patent application Ser. No. 12/084,150 having a filing date of Apr. 7, 2009, now U.S. Pat. No. 8,655,801, which is the National Stage of International Application No. PCT/IL2006/001235 filed on Oct. 26, 2006, which claims foreign priority from Israeli Application No. 171577 filed on Oct. 26, 2005, and Israeli Application No. 173409 filed on Jan. 29, 2006;
- (2) U.S. patent application Ser. No. 12/195,863, filed Aug. 21, 2008, now U.S. Pat. No. 8,326,775, which claims priority under 35 USC 119 from Israeli Application No. 185414 filed on Aug. 21, 2007, and which is also a continuation-in-part of the above-referenced U.S. patent application Ser. No. 12/084,150;
- (3) U.S. patent application Ser. No. 12/348,888, filed on Jan. 5, 2009, now pending, which is a CIP of the above-referenced U.S. patent application Ser. Nos. 12/084,150 and 12/195,863; and
- (4) U.S. patent application Ser. No. 12/538,495 filed on Aug. 10, 2009, now U.S. Pat. No. 8,312,031, which is a CIP of the above-referenced U.S. patent application Ser. Nos. 12/084,150, 12/195,863, and 12/348,888.
- All of the applications referenced above are herein incorporated by reference for all that they contain.
- The present disclosure relates generally to the analysis of multimedia content, and more specifically to generating facial representations of a user associated with a user device.
- With the abundance of data made available through various means in general and the Internet and world-wide web (WWW) in particular, attracting users to content has become essential for online businesses. To effectively attract users to their content, such online businesses must be capable of recognizing and adapting to user preferences. Accordingly, there is a need to understand the preferences of users.
- Existing solutions provide several tools to identify users' preferences. Some existing solutions actively require an input from the users to specify their interests. However, profiles generated for users based on their inputs may be inaccurate, as the users tend to provide only their current interests, or otherwise only provide partial information due to privacy concerns. For example, a user submitting a list of musical interests for a social media account may include only recently listened to bands or songs rather than all bands or songs the user enjoys.
- Other existing solutions passively track the users' activity through particular web sites such as social networks. The disadvantage with such solutions is that typically limited information regarding the users is revealed, as users tend to provide only partial information due to privacy concerns. For example, users creating an account on Facebook® provide in most cases only the minimum information required for the creation of the account. Additional information about such users may be collected over time, but may take significant amounts of time (i.e., gathered via multiple social media or blog posts over a time period of weeks or months) to be useful for accurate identification of user preferences.
- Further, many entities offer services allowing users to create customized user profiles. Such customized user profiles allow users to express their interests, personalities, and appearances. To this end, the customized user profiles often allow users to create facial or other image-based representations or avatars. Some image-based representations may be made based on user inputs (e.g., selections of body types, body parts, skin color, etc.), while other representations may be automatically created based on images of a user. Existing solutions for automatically creating facial or other representations of users face challenges in analyzing and representing combinations of facial features unique to particular users.
- It would be therefore advantageous to provide a solution that overcomes the deficiencies of the existing solutions.
- A summary of several example embodiments of the disclosure follows. This summary is provided for the convenience of the reader to provide a basic understanding of such embodiments and does not wholly define the breadth of the disclosure. This summary is not an extensive overview of all contemplated embodiments, and is intended to neither identify key or critical elements of all embodiments nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more embodiments in a simplified form as a prelude to the more detailed description that is presented later. For convenience, the term “some embodiments” may be used herein to refer to a single embodiment or multiple embodiments of the disclosure.
- The embodiments disclosed herein include a method for generating a facial representation. The method includes identifying, via at least one data source, at least one multimedia content element; generating at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyzing the generated signatures to determine a cluster of signatures of facial concepts; and generating, based on the cluster of facial concept signatures, a facial representation of the user.
- The embodiments disclosed herein also include a non-transitory computer readable medium having stored thereon instructions for causing a processing system to perform a method for generating a facial representation, wherein the instructions cause the processing system to: identify, via at least one data source, at least one multimedia content element; generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyze the generated signatures to determine a cluster of signatures of facial concepts; and generate, based on the cluster of facial concepts, a facial representation.
- The embodiments disclosed herein also include a system for generating a facial representation. The system comprises: a processing system; and a memory, wherein the memory contains instructions that, when executed by the processing system, configure the system to: identify, via at least one data source, at least one multimedia content element; generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept; analyze the generated signatures to determine a cluster of signatures of facial concepts; and generate, based on the cluster of facial concepts, a facial.
- The subject matter disclosed herein is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other objects, features, and advantages of the disclosed embodiments will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
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FIG. 1 is a network diagram utilized to describe the various embodiments disclosed herein. -
FIG. 2 is a flowchart illustrating a method for generating a user profile including a facial representation of a user according to an embodiment. -
FIG. 3 is a flowchart illustrating a method for analyzing a plurality of multimedia content elements according to an embodiment. -
FIG. 4 is a block diagram depicting the basic flow of information in the signature generator system. -
FIG. 5 is a diagram showing the flow of patches generation, response vector generation, and signature generation in a large-scale speech-to-text system. -
FIG. 6 is a flowchart illustrating a method for determining a context based on multimedia content elements according to an embodiment. -
FIG. 7 is a block diagram of an interest analyzer according to an embodiment. - It is important to note that the embodiments disclosed herein are only examples of the many advantageous uses of the innovative teachings herein. In general, statements made in the specification of the present application do not necessarily limit any of the various claimed embodiments. Moreover, some statements may apply to some features but not to others. In general, unless otherwise indicated, singular elements may be in plural and vice versa with no loss of generality. In the drawings, like numerals refer to like parts through several views.
- The disclosed embodiments include a system and method for generating a representation of a face of a user based on multimedia content elements. Upon receiving access to one or more data sources associated with the user's device, a plurality of multimedia content elements existing therein may be identified. At least one signature is generated for each multimedia content element. Each of the generated signatures represents a concept. The concepts are correlated with respect to the generated signatures to determine a cluster of facial concepts associated with the user. A facial representation of the user is generated based on the correlation. In an embodiment, the facial representation includes a list of facial features or at least one signature.
- According to another embodiment, the data source from which each multimedia content element was extracted may be identified. According to a further embodiment, metadata associated with each multimedia content element may be identified. According to yet another embodiment, a user profile including the facial representation may be generated, and the generated user profile may be stored in a data storage unit accessible by a server, the user device, a search engine, a combination thereof, and so on.
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FIG. 1 shows an example network diagram 100 utilized to describe the various disclosed embodiments. Anetwork 110 is used to communicate between different parts of the network diagram 100. Thenetwork 110 may be the Internet, the world-wide-web (WWW), a local area network (LAN), a wide area network (WAN), a metro area network (MAN), and other networks capable of enabling communication between elements of the network diagram 100. - Further communicatively connected to the
network 110 is a user device (UD) 120. Theuser device 120 may be, but is not limited to, a personal computer (PC), a personal digital assistant (PDA), a mobile phone, a smart phone, a tablet computer, an electronic wearable device (e.g., glasses, a watch, etc.), a smart television, or any other wired or mobile device equipped with browsing, viewing, capturing, storing, listening, filtering, and managing capabilities enabled as further discussed herein below. - The
user device 120 may further include aninterest analyzer 125 installed thereon. Theinterest analyzer 125 may be a dedicated application, script, or any program code stored in a memory of theuser device 120 and is executable, for example, by a processing system (e.g., microprocessor) of theuser device 120. Theinterest analyzer 125 may be pre-installed in theuser device 120. In a non-limiting embodiment, theinterest analyzer 125 may be downloaded from an application repository (not shown) such as, for example, the AppStore®, Google Play®, or any repositories hosting software applications. Theinterest analyzer 125 may be configured to perform some or all of the processes performed by aserver 130 and disclosed herein. Specifically, in an embodiment, theinterest analyzer 125 may be configured to, e.g., generate facial representations. In an embodiment, theuser device 120 includes alocal storage 127 for storing multimedia content elements, concepts, signatures of multimedia content elements, or a combination thereof. It should be noted that only oneuser device 120 and oneinterest analyzer 125 are discussed with respect toFIG. 1 merely for the sake of simplicity and without limitation on the disclosure. - Optionally communicatively connected to the
network 110 is adata warehouse 150 for storing multimedia content elements associated with a user of the user device. According to an embodiment, thedata warehouse 150 may be associated with a social networking website or entity utilized by a user of theuser device 120. According to another embodiment, thedata warehouse 150 may be a cloud-based storage accessible by theuser device 120. In the embodiment illustrated inFIG. 1 , either or both of theuser device 120 and aserver 130 communicates with thedata warehouse 150 through thenetwork 110. Such communication may be subject to an approval to be received from theuser device 120. - In an embodiment, either or both of the
user device 120 and theserver 130 is further communicatively connected to a signature generator system (SGS) 140 and to a deep-content classification (DCC)system 170 through thenetwork 110. In another embodiment, each of theDCC system 170 and theSGS 140 may be embedded in theserver 130 or theuser device 120. In a further embodiment, theSGS 140 may further include a plurality of computational cores configured for signature generation, where each computational core is at least partially statistically independent from the other computational cores. It should be noted that each of theuser device 120 and theserver 130 typically includes a processing system (not shown) coupled to a memory (not shown). The memory contains instructions that can be executed by the processing system. - According to an embodiment, upon receiving access to one or more storage units associated with the user of the
user device 120, theserver 130 is configured to identify multimedia content elements stored therein. The storage units may be the web sources 160, thelocal storage 127 of theuser device 120, both, or any other storage including multimedia content elements associated with a user of theuser device 120. A multimedia content element may be, but is not limited to, an image, a graphic, a video stream, a video clip, an audio stream, an audio clip, a video frame, a photograph, an image of signals (e.g., spectrograms, phasograms, scalograms, etc.), a combination thereof, or a portion thereof. - Alternatively, according to the disclosed embodiments, the
server 130 is configured to receive multimedia content elements from theuser device 120 accompanied by a request to generate a user profile respective thereof. With this aim, theserver 130 sends each received multimedia content element to theSGS 140, to theDCC system 170, or to both. The decision which is used (e.g., by theSGS 140, theDCC system 170, or both) may be a default configuration or based on the request. - In an embodiment, the
SGS 140 receives a multimedia content element and returns at least one signature for the received multimedia content element. The generated signature(s) may be robust to noise and distortion. To this end, theSGS 140 may include a plurality of computational cores, where each computational core is at least partially statistically independent of the other computational cores. The process for generating the signatures is discussed in detail herein below. - The
SGS 140 may send the generated signature(s) to theserver 130. Based on the generated signature(s), theserver 130 is configured to search for similar multimedia content elements in a data warehouse. The process of matching between multimedia content elements is discussed in detail below with respect toFIGS. 4 and 5 . - The
server 130 is configured to analyze the similar multimedia content elements found during the search with respect to the signatures in order to determine a cluster of facial concepts associated with the user of theuser device 120. The analysis may include identification of the source in which each multimedia content element was identified. The sources from which the multimedia content elements were identified may be relevant in determining whether each multimedia content element shows the user's face or facial features. As an example, an image captured by theuser device 120 using a camera located in the screen-side of theuser device 120 is more likely to include a facial image of the user than an image extracted from a web source associated with a social network in which the user has an account in (such an image may feature, for example, the user's entire body, with only a small portion of the image illustrating the user's face). - According to another embodiment, metadata associated with each multimedia content element may by identified by the
server 130. The metadata may include, but is not limited to, a time pointer associated with the capture or upload of each multimedia content element, a location pointer associated with the capture or upload of each multimedia content element, one or more tags added to each multimedia content element, a combination thereof, and so on. - In a further embodiment, such metadata may be analyzed, and the results of the metadata analysis may be utilized to, e.g., determine whether the multimedia content element descriptive of optimally descriptive of the user's facial features. As an example, a photo taken at 11:00 PM in an outdoor park may be determined not to be optimally descriptive of a user's face or facial features. As another example, a photo associated with the tag “self ie” may be determined to be optimally descriptive of the user's facial features.
- According to another embodiment, the analysis of the received multimedia content element may further be based on a concept structure (hereinafter referred to as “concept”). A concept is a collection of signatures representing elements of the unstructured data and metadata describing the concept. The concept may be a signature-reduced cluster of related signatures. As a non-limiting example, a ‘Superman concept’ is a signature-reduced cluster of signatures describing elements (e.g., multimedia elements) related to, e.g., a Superman cartoon: a set of metadata representing proving textual representation of the Superman concept. Techniques for generating concept structures are also described in the above-referenced U.S. Pat. No. 8,266,185, assigned to the common assignee, which is hereby incorporated by reference for all that it contains.
- According to a further embodiment, a query is sent to the
DCC system 170 to match the received multimedia content element to at least one concept. The identification of a concept matching the received multimedia content element includes matching at least one signature generated for the received multimedia content element (e.g., signatures generated either by theSGS 140 or by the DCC system 170) and comparing the element's signatures to signatures representing a concept structure. The matching can be performed across all concept structures maintained by thesystem DCC 170. - It should be noted that, if the query sent to the
DCC system 170 results in matching multiple concept structures, a correlation for matching concept structures is performed to generate a facial representation of a user that best describes the user's face. The correlation can be achieved by identifying a ratio between signatures' sizes, a spatial location of each signature, using probabilistic models, or a combination thereof. The facial representation may be, but is not limited to, a list of features, at least one representative signature representing facial features, and the like. - Based on the matching concept structures, the
server 130 is configured to generate a facial representation of the user. In an embodiment, the facial representation may include a cluster of signatures or the list of facial features. In an embodiment, generating the facial representation may include generating a cluster of signatures representing facial concepts associated with the user of theuser device 120 based on the at least one representative signature. The facial concepts include concept structures related to facial features such as, but not limited to, eyes, hair, mouth, nose, eyebrows, forehead, ears, cheeks, forehead, facial hair, and the like. - In another embodiment, generating the facial representation may include determining textual representations of facial features of the user and generating a list based thereon. The determined textual representations may include textual multimedia content elements associated with any or all of the at least one representative signature.
- The facial representation may be generated based on multimedia content elements that are determined as optimally describing the face of the user. For example, the optimally descriptive multimedia content elements may include images of, but not limited to, a nose, hair, eyes, a mouth, facial hair, eyebrows, a forehead, cheeks, a chin, birth marks, and the like. The facial representation may be sent for storage in, for example, the
data warehouse 150. - To this end, in an embodiment, generating the facial representation may include analyzing the multimedia content elements featuring the face of the user and determining, based on the analysis, the optimally descriptive multimedia content elements. In a further embodiment, the analysis may be based on the analysis of the signatures of the multimedia content elements featuring the face of the user.
- In an embodiment, determining whether each multimedia content element is an optimally descriptive multimedia content element may be based on, but not limited to, a size of the face relative to the entire multimedia content, a number of facial features illustrated by the multimedia content element, an angle of the view of the face, whether a portion or all of the face is obstructed or otherwise unclear, a combination thereof, and the like. The optimally descriptive multimedia contents may be determined based on one or more thresholds such as, but not limited to, a pixel threshold, a threshold number of facial features, a threshold angle, a combination thereof, and the like. As noted above, in a further embodiment, determining whether a multimedia content element is optimally descriptive may be further based on metadata associated with the multimedia content element.
- As a non-limiting example for determining optimally descriptive multimedia content elements, an image in which only the middle portion of a forehead of the user is shown may be determined to not be an optimally descriptive multimedia content element because no entire facial feature is shown. As another non-limiting example, a portion of a video showing a close up shot of the front of the user's face including eyes, a nose, a mouth, and a beard may be determined to be an optimally descriptive multimedia content element. As yet another non-limiting example, an image showing a back isometric view of the user's face may be determined as not being an optimally descriptive multimedia content element.
- It should be noted that certain tasks performed by the
server 130, theSGS 140, and theDCC system 170 may be carried out, alternatively or collectively, by theuser device 120 and theinterest analyzer 125. Specifically, in an embodiment, signatures may be generated by a signature generator (e.g., thesignature generator 710 discussed further herein below with respect toFIG. 7 ). An example block diagram of aninterest analyzer 125 installed on auser device 120 is described further herein below with respect toFIG. 7 . - It should also be noted that the signatures may be generated for multimedia content elements stored in the
data sources 150, in thelocal storage 127 of theuser device 120, or in a combination thereof. -
FIG. 2 depicts anexample flowchart 200 illustrating a method for generating a user profile including a facial representation according to an embodiment. In an embodiment, the method may be performed by a server (e.g., the server 130). In another embodiment, the method may be performed by an interest analyzer (e.g., theinterest analyzer 125 installed on the user device 120). - At S210, multimedia content elements are identified through data sources associated with a user of a user device. The multimedia content elements may be identified based on a request for creating a user profile. The request may indicate, for example, particular multimedia content elements to be identified, data sources in which the multimedia content elements may be identified, metadata tags of multimedia content elements to be identified, combinations thereof, and the like. The data sources may include, but are not limited to, web sources (e.g., the web sources 160), a local storage (e.g., the
local storage 127 of theuser device 120 or a local storage associated with the server 130), a combination thereof, and the like. - In a further embodiment, S210 may include pre-filtering multimedia content elements that are unrelated to the user's face or to faces generally. To this end, S210 may further include analyzing metadata tags associated with multimedia content elements in the data sources to identify multimedia content elements featuring the user's face. As a non-limiting example, if tags associated with a multimedia content element indicate that the multimedia content element does not show a person or, in particular, does not show the user, the multimedia content element may be pre-filtered out. The pre-filtering may reduce subsequent usage of computational resources due to, e.g., signature generation, concept correlation, and the like.
- At S220, at least one signature is generated for each identified multimedia content element. In an embodiment, S220 may include generating a signature for portions of any or all of the multimedia content elements. Each signature represents a concept associated with the multimedia content element. For example, a signature generated for a multimedia content element featuring a man in a costume may represent at least a “Batman®” concept. The signature(s) are generated by a signature generator (e.g., the
SGS 140 or the signature generator 710) as described herein below with respect toFIGS. 4 and 5 . - At S230, the identified multimedia content elements are analyzed based on the signatures. In an embodiment, the analysis includes determining a context of the identified multimedia content elements related to the user's face. In a further embodiment, the analysis includes determining, based on the context, multimedia content elements that optimally describe the user's face and generating a cluster including signatures representing the optimally descriptive multimedia content elements. Determining contexts of multimedia content elements based on signatures is described further herein below with respect to
FIG. 3 . - At S240, based on the analysis of the multimedia content elements, a facial representation of the user of the user device is generated. In an embodiment, generating the facial representation may include generating a cluster of signatures including signatures associated with multimedia content elements that optimally describe the face of the user as described further herein above with respect to
FIG. 1 . - In another embodiment, generating the facial representation may include filtering out multimedia content elements or portions thereof that are not related to the user's face. In yet another embodiment, generating the facial representation may include determining, based on the optimally descriptive multimedia content elements, a list of facial features. The list of facial features may include a plurality of textual multimedia content elements associated with any of the optimally descriptive multimedia content elements.
- At S250, the facial representation is associated with a user profile of the user of the user device. In an embodiment, S250 includes creating a user profile and associating the facial representation with the generated user profile. In a further embodiment, creating the user profile may include analyzing a plurality of multimedia content elements associated with the user to determine information related to the user such as, for example, interests of the user, contacts of the user (e.g., friends, family, and acquaintances), events the user has attended, a profession of the user, and the like. An example method and system for creating user profiles based on analysis of multimedia content elements is described further in U.S. patent application Ser. No. 15/206,711, assigned to the common assignee, which is hereby incorporated by reference for all that it contains.
- At S260, the generated user profile is sent for storage in a storage such as, for example, the
data warehouse 150. -
FIG. 3 depicts an example flowchart S230 illustrating a method for analyzing a plurality of multimedia content elements and determining contexts of the multimedia content elements according to an embodiment. In an embodiment, the method is performed using signatures generated for the multimedia content elements by a signature generator system. - At S310, at least one concept structure matching the multimedia content elements is identified. In an embodiment, the concept structure is identified based on the signatures of the multimedia content elements. In a further embodiment, S310 may include querying a DCC system (e.g., the DCC system 170) using the signatures generated for the multimedia content elements. The metadata of the matching concept structure is used for correlation between a first multimedia content element and at least a second multimedia content element of the plurality of multimedia content elements.
- At optional S320, a source of each multimedia content element is identified. As further described hereinabove, the source of each multimedia content element may be indicative of the content or the context of the multimedia content element. In an embodiment, S320 may further include determining, based on the source of each multimedia content element, at least one potential context of the multimedia content element. In a further embodiment, each source may be associated with a plurality of potential contexts of multimedia content elements. As a non-limiting example, for a multimedia content stored in a source including video clips of basketball games, potential contexts may include, but are not limited to, “basketball,” “the Chicago Bulls®,” “the Golden State Warriors®,” “the Cleveland Cavaliers®,” “NBA,” “WNBA,” “March Madness,” and the like.
- At optional S330, metadata associated with each multimedia content element is identified. The metadata may include, for example, a time pointer associated with the capture or upload of each multimedia content element, a location pointer associated the capture or upload of each multimedia content element, one or more tags added to each multimedia content element, a combination thereof, and so on.
- At S340, a context of the multimedia content elements is determined. In an embodiment, the context may be determined based on the correlation between a plurality of concepts related to multimedia content elements. The context may be further based on relationships between the multimedia content elements. Determining contexts of multimedia content elements based on concepts is described further herein below with respect to
FIG. 6 . - At S350, based on the determined context, a cluster including signatures related to multimedia content elements that optimally describe the user's face is generated. In an embodiment, S350 includes matching the generated signatures to a signature representing the determined context. Signatures matching the context signature above a predefined threshold may be determined to represent multimedia content elements that optimally describe the user's face. In a further embodiment, the cluster may be a signature reduced cluster.
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FIGS. 4 and 5 illustrate the generation of signatures for the multimedia content elements by theSGS 140 according to one embodiment. An example high-level description of the process for large scale matching is depicted inFIG. 4 . In this example, the matching is for a video content. -
Video content segments 2 from a Master database (DB) 6 and a Target DB 1 are processed in parallel by a large number of independent computational Cores 3 that constitute an architecture for generating the Signatures (hereinafter the “Architecture”). Further details on the computational Cores generation are provided below. The independent Cores 3 generate a database of Robust Signatures andSignatures 4 for Target content-segments 5 and a database of Robust Signatures and Signatures 7 for Master content-segments 8. An example process of signature generation for an audio component is shown in detail inFIG. 4 . Finally, Target Robust Signatures and/or Signatures are effectively matched, by amatching algorithm 9, to Master Robust Signatures and/or Signatures database to find all matches between the two databases. - To demonstrate an example of the signature generation process, it is assumed, merely for the sake of simplicity and without limitation on the generality of the disclosed embodiments, that the signatures are based on a single frame, leading to certain simplification of the computational cores generation. The Matching System is extensible for signatures generation capturing the dynamics in-between the frames. In an embodiment the
server 130 is configured with a plurality of computational cores to perform matching between signatures. - The Signatures' generation process is now described with reference to
FIG. 5 . The first step in the process of signatures generation from a given speech-segment is to breakdown the speech-segment to K patches 14 of random length P and random position within thespeech segment 12. The breakdown is performed by thepatch generator component 21. The value of the number of patches K, random length P and random position parameters is determined based on optimization, considering the tradeoff between accuracy rate and the number of fast matches required in the flow process of theserver 130 andSGS 140. Thereafter, all the K patches are injected in parallel into all computational Cores 3 to generateK response vectors 22, which are fed into asignature generator system 23 to produce a database of Robust Signatures andSignatures 4. - In order to generate Robust Signatures, i.e., Signatures that are robust to additive noise L (where L is an integer equal to or greater than 1) by the Computational Cores 3 a frame ‘i’ is injected into all the Cores 3. Then, Cores 3 generate two binary response vectors: {right arrow over (S)} which is a Signature vector, and {right arrow over (RS)} which is a Robust Signature vector.
- For generation of signatures robust to additive noise, such as White-Gaussian-Noise, scratch, etc., but not robust to distortions, such as crop, shift and rotation, etc., a core Ci={ni} (1≤i≤L) may consist of a single leaky integrate-to-threshold unit (LTU) node or more nodes. The node ni equations are:
-
- where, θ is a Heaviside step function; wij is a coupling node unit (CNU) between node i and image component j (for example, grayscale value of a certain pixel j); kj is an image component ‘j’ (for example, grayscale value of a certain pixel j); ThX is a constant Threshold value, where ‘x’ is ‘S’ for Signature and ‘RS’ for Robust Signature; and Vi is a Coupling Node Value.
- The Threshold values ThX are set differently for Signature generation and for Robust Signature generation. For example, for a certain distribution of Vi values (for the set of nodes), the thresholds for Signature (ThS) and Robust Signature (ThRS) are set apart, after optimization, according to at least one of the following criteria:
- 1: For: Vi>ThRS
- 1−p(V>ThS)−1−(1−ε)l>>1
- i.e., given that l nodes (cores) constitute a Robust Signature of a certain image I, the probability that not all of these I nodes will belong to the Signature of same, but noisy image, Ĩ is sufficiently low (according to a system's specified accuracy).
- 2: p(Vi>ThRS)≈l/L
- i.e., approximately l out of the total L nodes can be found to generate a Robust Signature according to the above definition.
- 3: Both Robust Signature and Signature are generated for certain frame i.
- It should be understood that the generation of a signature is unidirectional, and typically yields lossless compression, where the characteristics of the compressed data are maintained but the uncompressed data cannot be reconstructed. Therefore, a signature can be used for the purpose of comparison to another signature without the need of comparison to the original data. The detailed description of the Signature generation can be found in U.S. Pat. Nos. 8,326,775 and 8,312,031, assigned to the common assignee, which are hereby incorporated by reference for all that they contain.
- A Computational Core generation is a process of definition, selection, and tuning of the parameters of the cores for a certain realization in a specific system and application. The process is based on several design considerations, such as:
- (a) The Cores should be designed so as to obtain maximal independence, i.e., the projection from a signal space should generate a maximal pair-wise distance between any two cores' projections into a high-dimensional space.
- (b) The Cores should be optimally designed for the type of signals, i.e., the Cores should be maximally sensitive to the spatio-temporal structure of the injected signal, for example, and in particular, sensitive to local correlations in time and space. Thus, in some cases a core represents a dynamic system, such as in state space, phase space, edge of chaos, etc., which is uniquely used herein to exploit their maximal computational power.
- (c) The Cores should be optimally designed with regard to invariance to a set of signal distortions, of interest in relevant applications.
- A detailed description of the Computational Core generation and the process for configuring such cores is discussed in more detail in the above-noted U.S. patent application Ser. No. 12/084,150.
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FIG. 6 is an example flowchart S340 illustrating a method for determining a context of a plurality of multimedia content elements based on concepts according to an embodiment. - At S610, a plurality of multimedia content elements is identified. The identified multimedia content elements may be received from, e.g., a user device, or retrieved from, e.g., a data warehouse.
- At S620, at least one signature is identified for each of the multimedia content elements. In an embodiment, each signature may be generated as described further herein above with respect to
FIGS. 4 and 5 . It should also be noted that any of the signatures may be generated based on a portion of a multimedia content element. - At S630, the generated signatures are analyzed to determine a correlation between the signatures of the multimedia content elements or portions thereof. In an embodiment, S630 includes determining correlations between concepts of the multimedia content elements. In a further embodiment, the correlations between concepts are determined by identifying a ratio between signatures' sizes, a spatial location of each signature, and so on using probabilistic models. Each signature represents a concept and is generated for a multimedia content element. Thus, identifying, for example, the ratio of signatures' sizes may also indicate the ratio between the size of their respective multimedia elements.
- At S640, based on the analysis of the generated signatures, a context of the plurality of multimedia content elements is determined. In an embodiment, it may further be determined whether the context is a strong context.
- A context is determined as the correlation between a plurality of concepts. A strong context is determined when there are multiple concepts, i.e., a plurality of concepts that satisfy the same predefined condition. As an example, signatures generated for multimedia content elements of a smiling child with a Ferris wheel in the background are analyzed. The concept of the signature of the smiling child is “amusement” and the concept of a signature of the Ferris wheel is “amusement park”. The relationship between the signatures of the child and of the Ferris wheel may be further analyzed to determine that the Ferris wheel is bigger than the child. The relation analysis results in a determination that the Ferris wheel is used to entertain the child. Therefore, the determined context may be “amusement.”
- According to an embodiment, one or more typically probabilistic models may be utilized to determine the correlation between signatures representing concepts. The probabilistic models determine, for example, the probability that a signature may appear in the same orientation and in the same ratio as another signature. The analysis may be further based on previously analyzed signatures.
- In another embodiment, the context can be determined further based on a ratio of the sizes of the objects in the multimedia content elements and their relative spatial orientations (i.e., position, arrangement, direction, combinations thereof, and the like). For example, based on an image containing multimedia content elements related to bears having different sizes, a context may be determined as “family of bears.” As another example, based on an image containing multimedia content elements of people facing the same direction (toward a camera) and having similar sizes as well as a banner for a school saying “graduation,” a context may be determined as “graduation photograph.”
- At S650, the determined context is stored in, e.g., the
data warehouse 150. - As a non-limiting example, a plurality of multimedia content elements contained in an image is identified. According to this example, multimedia content elements of the singer “Adele”, “red carpet”, and a “Grammy” award are shown in the image. Signatures are generated for each of the multimedia content elements. The correlation between “Adele”, “red carpet”, and a “Grammy” award is determined with respect to the signatures and the context of the image is determined based on the correlation. According to this example, such a context may be “Adele Winning the Grammy Award”. The determined context is stored in a data warehouse.
- As another non-limiting example, multimedia content elements related to objects such as a “glass”, a “cutlery”, and a “plate” are identified. Signatures are generated for the glass, cutlery, and plate multimedia content elements. The correlation between the concepts represented by the signatures is determined based on previously analyzed signatures of glasses, cutlery, and plates. According to this example, as all of the concepts related to the “glass”, the “cutlery”, and the “plate” satisfy the same predefined condition, a strong context is determined. Based on the correlation among the multimedia content elements and the relative sizes and orientations of the objects illustrated by the multimedia content elements, the context of such concepts is determined to be a “table set”.
-
FIG. 7 depicts an example block diagram of aninterest analyzer 125 installed on theuser device 120 according to an embodiment. Theinterest analyzer 125 may be configured to access an interface of a user device or of a server. Theinterest analyzer 125 is further communicatively connected to a processing system (PS, not shown) such as a processor and to a memory (mem). The memory contains therein instructions that, when executed by the processing system, configures theinterest analyzer 125 as further described hereinabove and below. Theinterest analyzer 125 may further be communicatively connected to a storage unit (e.g., thelocal storage 127 of theuser device 120 or a storage of the server 130) including a plurality of multimedia content elements. - In an embodiment, the
interest analyzer 125 includes a signature generator (SG) 710, a data storage (DS) 720, arecommendations engine 730, and a facial recognizer (FR) 740. Thesignature generator 710 may be configured to generate signatures for multimedia content elements. In a further embodiment, thesignature generator 710 includes a plurality of computational cores as discussed further herein above, where each computational core is at least partially statistically independent of the other computations cores. - The
data storage 720 may store a plurality of multimedia content elements, a plurality of concepts, signatures for the multimedia content elements, signatures for the concepts, or a combination thereof. In a further embodiment, thedata storage 720 may include a limited set of concepts relative to a larger set of known concepts. Such a limited set of concepts may be utilized when, for example, thedata storage 720 is included in a device having a relatively low storage capacity such as, e.g., a smartphone or other mobile device. - The
recommendations engine 730 may be configured to generate contextual insights based on multimedia content elements related to the user interest, to query sources of information (including, e.g., thedata storage 720 or another data source), and to cause a display of recommendations on theuser device 120. - According to an embodiment, the
interest analyzer 125 is configured to receive at least one multimedia content element. Theinterest analyzer 125 is configured to initialize a signatures generator (SG) 710 to generate at least one signature for the received at least one multimedia content element. - In an embodiment, the
interest analyzer 125 is configured to initialize thefacial recognizer 740 to generate a facial representation. The facial representation may be generated based on signatures generated for the received at least one multimedia content element. To this end, thefacial recognizer 740 may be configured to analyze the received at least one multimedia content element based on the generated signatures. Based on the analysis, thefacial recognizer 740 is configured to determine optimally descriptive multimedia content elements representing facial features as described further herein above. Based on the optimally descriptive multimedia content elements, thefacial recognizer 740 is configured to generate the facial representation. In an embodiment, the facial representation may include a plurality or cluster of signatures associated with the optimally descriptive multimedia content elements. In another embodiment, the facial representation may include a list of facial features illustrated by the optimally descriptive multimedia content elements. - In an embodiment, the memory further contains instructions to query a user profile of the user stored in a data storage (DS) 720 to determine a user interest. The memory further contains instructions to generate a contextual insight based on the user interest and the at least one signature. Based on the contextual insight, a
recommendations engine 730 is initialized to search for one or more content items that match the contextual insight. The matching content items may be provided by therecommendations engine 730 to the user as recommendations via the interface. - Each of the
recommendations engine 730 and thesignature generator 710 can be implemented with any combination of general-purpose microprocessors, multi-core processors, microcontrollers, digital signal processors (DSPs), field programmable gate array (FPGAs), programmable logic devices (PLDs), controllers, state machines, gated logic, discrete hardware components, dedicated hardware finite state machines, or any other suitable entities that can perform calculations or other manipulations of information. - In certain implementations, the
recommendation engine 730, thesignature generator 710, or both can be implemented using an array of computational cores having properties that are at least partly statistically independent from other cores of the plurality of computational cores. The computational cores are further discussed below. - According to another implementation the processes performed by the
recommendation engine 730, thesignature generator 710, or both can be executed by a processing system of theuser device 120 orserver 130. Such processing system may include machine-readable media for storing software. Software shall be construed broadly to mean any type of instructions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. Instructions may include code (e.g., in source code format, binary code format, executable code format, or any other suitable format of code). The instructions, when executed by the one or more processors, cause the processing system to perform the various functions described herein. - It should be noted that, although
FIG. 7 is described with respect to aninterest analyzer 125 included in theuser device 120, any or all of the components of theinterest analyzer 125 may be included in another system or systems (e.g., theserver 130, thesignature generator system 140, or both) and utilized to perform some or all of the tasks described herein without departing from the scope of the disclosure. As an example, theinterest analyzer 125 operable in theuser device 120 may send multimedia content elements to thesignature generator system 140 and may receive corresponding signatures therefrom. As another example, theuser device 120 may send signatures to theserver 130 and may receive corresponding recommendations or concepts therefrom. As yet another example, theinterest analyzer 125 may be included in theserver 130 and may provide recommendations to theuser device 120 based on multimedia content elements identified by or received from theuser device 120. - It should be noted that various embodiments described herein above are discussed with respect to a user and, in particular, a user of a user device, merely for simplicity purposes and without limitation on the disclosed embodiments. The embodiments described herein are equally applicable to any entity (e.g., humans, animals, toys, etc.) having distinguishing facial characteristics that may be illustrated by multimedia content elements regardless of whether such entity is the owner or otherwise a user of a user device. For example, a facial representation may be generated for a dog whose ears, mouth, nose, fur, and eyes are shown in one or more pictures or videos.
- The various embodiments disclosed herein can be implemented as hardware, firmware, software, or any combination thereof. Moreover, the software is preferably implemented as an application program tangibly embodied on a program storage unit or computer readable medium consisting of parts, or of certain devices and/or a combination of devices. The application program may be uploaded to, and executed by, a machine comprising any suitable architecture. Preferably, the machine is implemented on a computer platform having hardware such as one or more central processing units (“CPUs”), a memory, and input/output interfaces. The computer platform may also include an operating system and microinstruction code. The various processes and functions described herein may be either part of the microinstruction code or part of the application program, or any combination thereof, which may be executed by a CPU, whether or not such a computer or processor is explicitly shown. In addition, various other peripheral units may be connected to the computer platform such as an additional data storage unit and a printing unit. Furthermore, a non-transitory computer readable medium is any computer readable medium except for a transitory propagating signal.
- All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the disclosed embodiments and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. Moreover, all statements herein reciting principles, aspects, and embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future, i.e., any elements developed that perform the same function, regardless of structure.
Claims (23)
1. A method for creating a facial representation, comprising:
identifying, via at least one data source, at least one multimedia content element;
generating at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept;
analyzing the generated signatures to determine a cluster of signatures of facial concepts; and
generating, based on the cluster of facial concept signatures, a facial representation.
2. The method of claim 1 , wherein the facial representation includes the determined cluster of signatures.
3. The method of claim 1 , wherein the facial representation includes a list of facial features.
4. The method of claim 1 , further comprising:
identifying a source of each multimedia content element; and
determining, based on each identified source, a context of each of the at least one multimedia content element, wherein the analysis of the generated signatures is further based on the determined contexts.
5. The method of claim 1 , further comprising:
identifying metadata associated with each multimedia content element, wherein the analysis of the generated signatures is further based on the identified metadata.
6. The method of claim 5 , wherein the metadata associated with each multimedia content element includes at least one of: a time pointer associated with a capture of the multimedia content element, a time pointer associated with an upload of the multimedia content element, a location pointer associated with a capture of the multimedia content element, a location pointer associated with an upload of the multimedia content element, and a tag added to the multimedia content element.
7. The method of claim 1 , wherein each multimedia content element is at least one of: an image, graphics, a video stream, a video clip, an audio stream, an audio clip, a video frame, a photograph, and an image of signals.
8. The method of claim 1 , further comprising:
associating the facial representation with a user profile.
9. The method of claim 1 , further comprising:
querying a deep-content-classification system to find a match between at least one concept structure and the identified at least one multimedia content element.
10. The method of claim 1 , wherein each signature is generated by a signature generator system, wherein the signature generator system includes a plurality of computational cores configured to receive a plurality of unstructured data elements, each computational core of the plurality of computational cores having properties that are at least partly statistically independent of other of the computational cores, the properties are set independently of each other core.
11. The method of claim 1 , wherein each facial concept is a collection of signatures representing at least one conceptually related multimedia content element and metadata describing the concept, wherein the collection of signatures is a signature reduced cluster generated by inter-matching signatures generated for the at least one multimedia content element.
12. A non-transitory computer readable medium having stored thereon instructions for causing a processing system to perform a method for generating a facial representation, wherein the instructions cause the processing system to:
identify, via at least one data source, at least one multimedia content element;
generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept;
analyze the generated signatures to determine a cluster of signatures of facial concepts; and
generate, based on the cluster of facial concept signatures, a facial representation.
13. A system for generating a facial representation, comprising:
a processing system; and
a memory, wherein the memory contains instructions that, when executed by the processing system, configure the system to:
identify, via at least one data source, at least one multimedia content element;
generate at least one signature for at least a portion of each identified multimedia content element, wherein each generated signature represents at least one facial concept;
analyze the generated signatures to determine a cluster of signatures of facial concepts; and
generate, based on the cluster of facial concept signatures, a facial representation.
14. The system of claim 13 , wherein the facial representation includes the determined cluster of signatures.
15. The system of claim 13 , wherein the facial representation includes a list of facial features.
16. The system of claim 13 , wherein the system is further configured to:
identify a source of each multimedia content element; and
determine, based on each identified source, a context of each of the at least one multimedia content element, wherein the analysis of the generated signatures is further based on the determined contexts.
17. The system of claim 13 , wherein the system is further configured to:
identify metadata associated with each multimedia content element, wherein the analysis of the generated signatures is further based on the identified metadata.
18. The system of claim 17 , wherein the metadata associated with each multimedia content element includes at least one of: a time pointer associated with a capture of the multimedia content element, a time pointer associated with an upload of the multimedia content element, a location pointer associated with a capture of the multimedia content element, a location pointer associated with an upload of the multimedia content element, and a tag added to the multimedia content element.
19. The system of claim 13 , wherein each multimedia content element is at least one of: an image, graphics, a video stream, a video clip, an audio stream, an audio clip, a video frame, a photograph, and an image of signals.
20. The system of claim 13 , wherein the system is further configured to:
associate the facial representation with a user profile.
21. The system of claim 13 , wherein the system is further configured to:
query a deep-content-classification system to find a match between at least one concept structure and the identified at least one multimedia content element.
22. The system of claim 13 , further comprising:
a signature generator system for generating the at least one signature, wherein the signature generator system includes a plurality of computational cores configured to receive a plurality of unstructured data elements, each computational core of the plurality of computational cores having properties that are at least partly statistically independent of other of the computational cores, the properties are set independently of each other core.
23. The system of claim 13 , wherein each facial concept is a collection of signatures representing at least one conceptually related multimedia content element and metadata describing the concept, wherein the collection of signatures is a signature reduced cluster generated by inter-matching signatures generated for the at least one multimedia content element.
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