GB2472650A

GB2472650A - Metadata tagging of moving and still image content

Info

Publication number: GB2472650A
Application number: GB0914300A
Authority: GB
Inventors: David Peto; Stef Lewandowski
Original assignee: ALL IN DATA Ltd; ALL IN TECHNOLOGY Ltd
Current assignee: ALL IN DATA Ltd; ALL IN TECHNOLOGY Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2011-02-16
Also published as: WO2011018634A1; EP2465055A1; GB0914300D0

Abstract

A method and apparatus for tagging image content with metadata which is generated from keyword descriptions of image content spoken by human taggers whilst viewing the content. Voice recognition software is employed to identify the key keywords in an audio stream and the resultant metadata is associated in a synchronous manner with the relevant image content. A control console 430 allows the human tagger to navigate onscreen menus and select different taglines for providing multilevel metadata tagging of the image content. An integrated system provides for the storage of tagged digital image content, with near immediate access to tagged raw footage for viewing and editing, and for easy searching and accessing of finalized footage. A method of serving the tagged content is also provided which allows the content to be streamed over the web at an acceptable image resolution whilst maintaining the associated metatags.

Description

Metadata Tagging of Moving and Still Image Content

Field of the Invention

The present invention relates to the tagging of moving and still image content with metadata, and more particularly to an improved method and system for the metadata input and to the provision of tagged content.

Background to the Invention

The creative industries worldwide are facing a time-bomb that threatens their future profitability. It is data, and more specifically the thousands of terabytes of moving image content being created every day. At the same time they are unable to access and realise the value of the hundreds of thousands of hours of archive content they have already created. This failure to "sweat" their most valuable asset, their content, is the biggest barrier to the success and long term value of all video based creative companies, from broadcasters, to government agencies, independent television production companies, to advertising agencies and beyond. They are already unable to cope with the current volume of data, but with the move to filming on Digital Film cameras, which no longer capture to film or tape, the problem is set to exp'ode.

As a temporary expedient the industry has resorted to stopgap measures, whereby millions of pounds worth of footage is being stored on consumer grade portable hard drives in insecure locations, with no backup. Thus, a library of tapes that can be stored securely for up to 30 years and be catalogued, is being replaced by drives that have an average life span of 5 years, on which the data is degrading every single day, with thousands of video files that cannot be searched.

A piece of footage is considered valueless if it cannot be found within two hours.

As a result, creative companies are losing millions of pounds worth of assets every single year. If unchecked, hundreds of thousands of hours of content will be lost. This will not only affect straight initial revenue, companies also by definition will not be able to reuse it in future productions, be unable to deliver it to the fast growing (4.37 billion by 2012) online video market, and miss the opportunity to market raw footage to other content creators.

Their archives of existing content are also sitting, unexploited, in costly storage facilities. In the UK the BBC has 5.5 miles of shelves of un-digitized archive content. 1MG media has 300,000 tapes stored at a cost of �2 per tape per year.

All such companies are missing out on valuable revenue, with the UK archive market alone valued at �1.5 billion by 2014. These companies are faced with a huge infrastructure and staffing investment in order to rectify this. They simply cannot afford to do it, but nor can they afford not to. The obvious solution is outsourcing and yet, until now, no commercial company has presented a viable alternative.

Video content cannot be found because it cannot be searched. It has no associated words. The key is to add associated words to footage in the form of keywords, known as "metadata". Once "tagged" with such metadata, the tagged content can be searched by a search engine, either an internal engine or else an external engine, such as Google or Yahoo.

Currently, companies are attempting to automate metadata addition to finished video content, by using technologies such as speech to text, which is only 40% accurate, and face recognition. However, neither technique gives the user the actual content of a scene, which is crucial for making it searchable on multiple criteria, and hence valuable to an end user. Moreover, these methods are not reliable and, since they are only currently used on finished content, do not help content producers search their raw footage in order to create quicker, more profitable programming. In addition there is often no money available to create accurate or adequate metadata, as a programme's budget has already been spent.

The only way of adding rich metadata is to get human beings to do it. However, even then, adding metadata with multiple layers by typing it in manually is far too slow a process. For example, content may be tagged with multiple layers relating to Character, Location, Object, Story, Context, and Emotion. Studies on the manual addition of such rich metadata show it taking between 4-8 hours per hour of content.

Within the production community, basic metadata is being added to raw content by teams of untrained assistants who hate doing the job, and hence do it poorly and slowly. "Logging" as this process is called is frequently still done on paper.

However, the logging tools currently in existence do not provide enough fields for rich metadata to be added. As it has to be typed in, the process is too slow.

Moreover, because these are bespoke systems, once the footage leaves the system it instantly loses the associated metadata, rendering it less valuable.

Some metatagging software has been created to facilitate the tagging process, a good example being "Frameline" (see http://www.frameline.tv). However, as it is still involves manual entry by keyboard, it is too slow, and again, it is bespoke.

Since the only viable current solution to adding metadata involves humans and manually typed input, the process is too slow and makes the proposition of adding metadata quickly to large quantities of footage financially unviable. The use of manual typed input is one of the key limiting factors. Even with an automatic spell-check facility, it is slow and inaccurate. It also means that an operator has to concentrate on the keyboard as well as the screen, regardless as to whether they are a touch typist. In conjunction with this, in order to move between different metadata layers in each clip, the operator typically has to move a computer mouse to select to different entry boxes. Whilst doing this, the operator is no longer able to type, which means they that the footage being watched must temporarily be paused, thereby slowing the process yet further.

In addition to the issues discussed above, there are a number of other problems which arise when using humans for manual logging. Although straightforward in principle, the repetitive adding of metadata to large quantities of content results in lack of concentration and boredom. As a consequence, greater than a few minutes spent concentrating on a single clip can lead to a rapid decrease in the quality of tagging. Further to this, a major problem is what might be termed "brainfreeze", where an operator simply runs out of things to say and is left unable to add metadata to content quickly enough. This again, means the footage having to be paused, or most likely rewound, demoralising the operator and resulting in further decreases in quality.

As will be appreciated, there is a clear need for an improved method of processing and metatagging image content such as video content, which would in turn facilitate the provision of such metatagged content and alleviate many of the problems outlined above.

Summary of the Invention

According to a first aspect of the present invention, a computer implemented method of tagging image content comprises the steps of: receiving image data comprising digital image content; displaying the digital image content visually; receiving an audio data stream comprising audio content, the audio content comprising spoken keywords describing one or more characteristics associated with the image content being displayed, respective keywords being spoken by a human tagger in response to the image content currently being displayed; identifying the keywords received in the audio content and generating metadata therefrom; and, associating the metadata with the image content as metadata tags synchronously with the occurrence of the respective keywords in the audio data stream.

In this way the invention removes the need of a keyboard for manual data entry of the keywords for the metadata tagging process.

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Preferably, the method further comprises the steps of: receiving an indication of a selected one of a plurality of characteristics associated with the image content currently being displayed; and, identifying a respective metadata tagline corresponding to the selected characteristic, wherein the steps of generating and associating the metadata with the image content are performed in dependence on the respective metadata tagline.

Preferably, the tagline is displayed visually together with the respective keywords describing the selected characteristic associated with the image content currently being displayed.

The selected characteristics could relate to a wide range of different aspects of the image content and for which multiple layers of metadata can be associated with the content to provide for very rich tagging. Such characteristics may comprise one or more of: Character, Location, Story, Object, Background, Emotion, and Action.

In this way, rich metadata may be added to content up to four times faster and significantly more cost effectively than is currently possible.

In some embodiments, the received image data comprises digital image content having a second image resolution and the method further comprises the steps of: storing the metadata in a central database; and, associating the metadata with a stored file comprising the image content having a first image resolution which is greater than the second image resolution.

This allows a lower resolution version of the image content to be transmitted to the local or remote tagging station and to be more readily manipulated by the human tagger during the tagging process, whilst ensuring that the resulting rich metadata tags are associated Typically, the keywords are extracted from the audio data using a digital speech recognition technique. The audio content may be filtered to remove extraneous noise and/or predetermined words.

Although the metadata is associated with the image content near synchronously with the occurrence of the respective keywords in the audio data stream, account may be taken of the length of the respective keywords. Furthermore, allowance may be made for the latency of the human tagger speaking the keywords. In this way, the association of the metadata can take account of various factors affecting the precise synchronisation of the original spoken keywords with the corresponding image content.

In order to keep a given human tagger informed of the activity of other taggers, and to provide a useful accessible "dictionary" of keywords, the method may further comprise the step of displaying tags generated from the spoken input of other human taggers working on the tagging of related image content.

In order to provide incentive and promote competition between taggers, performance data associated with the performance of a given human tagger may be stored and displayed, as may the performance data for other human taggers working on the tagging of related image content.

In preferred applications, the digital image content is digital video content, either wit or without sound. More preferably, the image content is unfinalised "raw" content that can be further manipulated following its tagging with metadata.

Thus, unlike known techniques, the present invention allows the addition metadata to raw content at the most cost effective stage, namely the moment it

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is created. Of course, the invention may equally be applied to still images or a series thereof, as well as finalised video content.

In some preferred embodiments of the present invention, the method further comprises the step of receiving data identifying the physical location where received image content was first generated and also the time at which the received image content was generated and associating the identifying data synchronously with the relevant image content. This allows additional useful identifying information to be provided with the raw (or finalised) content, thereby enhancing its value still further. The identifying data will typically comprise GPS data identifying the physical location and allowing geotagging of the image content.

In such embodiments the method may further comprise the steps of: determining, in dependence on the received identifying data, information about the physical location where the received image content was first generated; and, displaying the information about the physical location synchronously with displaying the image content.

The information displayed may provide useful prompts to the human taggers and the audio content received in the audio data stream may comprise keywords spoken in response to the physical location information currently being displayed. Alternatively, the human tagger may speak a primary descriptive keyword in response to the image currently being viewed and the remaining descriptors for the metatagging may be generated automatically from a database of information about the physical location associated with the geotagged image.

in this way, the client may interface with the invention through an application running on a mobile device and may transmit the time-stamped location data independently of supplying the actual image content or footage being shot at the location. The location data can then be associated with the relevant

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uploaded image content in a time synchronous manner, thereby providing useful information per se or else a source for rich descriptive metatagging to be generated from the input of a human tagger.

Although the geotagging concept has been described in the context of the metadata tagging of image content according to the first aspect of the invention, it should be noted that it is capable of independent utility. As such, the geotagging method described above could be used to add geotags to image content after it has been generated (post-shoot) independently of whether any rich metadata tagging is subsequently performed.

According to a second aspect of the present invention, there is provided a computer program product for causing a computer to execute the method steps of the first aspect of the present invention. Again, the geotagging method steps could be performed independently and a computer program product for causing a computer to execute these method steps is contemplated. In reality this program product would typically be a mobile application for running on a mobile device such as a mobile telephone or PDA.

According to a third aspect of the present invention, apparatus for tagging image content comprises: display means for receiving image data comprising digital image content and for displaying the image content visually; means to receive audio content comprising spoken keywords describing one or more characteristics associated with the image content being displayed and to generate an audio data steam therefrom, respective keywords being spoken by a human tagger in response to the image content being currently displayed; and, processing means adapted to process the audio data steam and identify the keywords therein, the processing means being further adapted to generate metadata from the keywords and to associate the metadata with the image content as metadata tags synchronously with the occurrence of the respective keywords in the audio data stream.

The use of an audio reception means allows the keywords from which metadata is to be generated to be spoken by a human tagger whilst simultaneously viewing the image content to be tagged.

Preferably, the apparatus further comprising means to select each of a plurality of characteristics associated with the image content being displayed and to generate a signal representative thereof, wherein the processing means is adapted to identify a respective metadata tagline corresponding to each representative signal and to generate and associate the metadata with the image content in dependence on the respective metadata taglines. This allows for the easy "layering" of metadata and the attendant advantages in terms of the richness of the metadata tagging.

In a preferred embodiment, the selection means comprises a control pad having a plurality of keys or buttons, each of the plurality being assigned to a difterent characteristic. The control pad may also comprise means to navigate an onscreen menu displayed on the display means. Preferably, the control pad comprises means to control the speed of playback of the image content being displayed.

It is preferred that the audio content receiving means comprises a directional microphone. This type of microphone is well suited to capturing words spoken by a human operator and may be part of a headset.

Thus, operators will "talk" in the metadata via a headset microphone. They will simply "say what they see". This has multiple benefits. It takes them away from the keyboard and makes it feel like they are interacting with the content. It is by far the fastest way to describe what is happening on screen. Noise words (the, err, a, swear words etc) can be filtered by the software.

Moreover, the usual combination of mouse and keyboard can be replaced with a single control method nearly all people know, namely the games console joy pad. By assigning the metadata layers to buttons on the pad, the operator will be able to jump between layers instantly, speeding up the process. They will also be able to pause, fast-forward, rewind, jump scenes and generally interact with the content via the shoulder buttons and d-pad. This further immerses them in the content, promoting enjoyment, and hence more accurate tagging.

According to a fourth aspect of the present invention, an image content management system comprises: a plurality of image content tagging apparatus according to the third aspect of the present invention; a central processing system in communication with each of the plurality of image content tagging apparatus, the central processing system comprising a server for serving image content to the plurality of image content tagging apparatus and to one or more clients; and, a data store for storing image data and associated metadata, the data store being in communication with the central processing system.

In this way a centralised system is provided for storing and managing image content and the associated metadata.

Preferably, the image data comprising digital image content having a first image resolution is stored in the data store and image data comprising the digital image content having a second image resolution lower than the first is served to the image content tagging apparatus.

In a similar manner, the tagged image data comprising digital image content having a first image resolution and associated metadata can be stored in the data store, and the tagged image data comprising the digital image content

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having a lower second image resolution and the associated metadata can be served to a client for viewing and/or editing.

In this way, the high resolution version of the content is primarily made available when actually required, and lower resolution versions can be deployed during the tagging or post-tagging editing and review process.

Furthermore, the system may comprise a transcoder for transcoding the tagged image data for streaming to another device, such as a mobile device. In this way the image data can be coded in the appropriate format for a given browsing device.

In some preferred embodiments of the invention, the system is adapted to: receive data identifying the physical location where received image content was first generated and also the time at which the received image content was generated; and, associate the identifying data synchronously with the relevant image content.

Typically, the identifying data comprises GPS data identifying the physical location.

In such embodiments, it is preferred that the system is further adapted to: determine, in dependence on the received identifying data, information about the physical location where the received image content was first generated; and, display, on the relevant tagging apparatus display means, said information about the physical location synchronously with displaying the image content.

The centralised system allows for methods to deal with the boredom and brain freeze issues often associated with human tagging operators. For example,

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content to be tagged may be divided into sections and distributed between different members of a tagging "team". In this way, an hour's worth of content to be tagged may be divided into five sections, for a team of five operators, meaning that each member of the team will only have to work on a maximum twelve minute section. Similarly, as the content is being metatagged in teams of five, with each completing a short section, the system will show each operator the tags being created by the other members of the team, some of whom may be tagging ahead, while others are behind. Whilst not always directly relevant this will aid lateral thinking.

The present invention allows a service to be offered that, for the first time, will provide clients with storage online, and the ability to search and sell the thousands of video assets they create every year. The invention makes the process of adding keywords (or "metadata") to content, so as to make it searchable, up six times faster than current methods, thereby facilitating a financially viable solution to the problem.

According to a fifth aspect of the present invention, a method of serving data comprises the steps of: receiving image data comprising digital image content having a first image resolution; storing the received image data; tagging the stored image data with metadata associated with the image content; and, serving from a server the tagged image data comprising the digital image content having a second image resolution, wherein the second image resolution is lower than the first image resolution.

In some embodiments, the tagged image data comprising the lower resolution image content is served over a web browser.

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Preferably, the lower resolution image content is searchable by reference to the associated metadata. Alternatively or additionally, the lower resolution image content is searchable semantically.

Preferably, the lower resolution image content of the served image data may be edited whilst still retaining the associated metadata tagging. Modification data relating to the served image data may be received back at the server and automatically linked it to the stored tagged image data comprising the image content having the first resolution. In the case the image content has been edited, the modification data received back at the server may relate to edits of the served image data and may include new image content. In this way the lower resolution image content can be viewed, edited and augmented and modification data identifying the changes or selections is sent back to the server together with any associated metadata and is automatically linked to the high resolution version of the image content stored in a central data storage facility.

Preferably, the tagged image data is served to an end user device in a format compatible with said device and comprising the image content having a resolution compatible with the end user device. The end user device could be a portable device, such as a lap top computer or PDA, including an iPhone or similar device.

According to a sixth aspect of the present invention, a computer program product is provided for causing a computer to execute the method steps the fifth aspect of the present invention.

In the present invention, either via a central upload room or using their own links, client's raw footage will be uploaded to the image content management system, making it instantly secure. This content will then be metatagged, and low-resolution copies created, making it available to the client via a standard web browser. In this way, clients can interact with their footage within hours of filming.

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This possibility alone will change the way clients use their content, but via the web browser they can download it into the professional editing system of their choice, allowing them to create content without having to use a costly post production company. Once finished, the project files (not the data) are uploaded back to the system and re-united with the original footage. From here it can be sent, for example, to a special effects company for further work.

The result is the creative company having total control, for the first time ever, of the creative process, but also for the first time, having an instantly available online, fully metatagged copy of their finished content. From the system, they can then send this worldwide to anyone they choose, create new copies for mobile, the web or international broadcast, and all without tying up their staff with tapes, couriers or post production facilities.

Most significantly, via an online commerce presence, clients can sell their finished content direct to consumers, syndicate it to Internet broadcasters, and crucially, as it is metatagged, generate revenue from targeted advertising around it. Simultaneously, their unused footage, to which they may own the Intellectual property rights, and which currently is effectively valueless, can be sold as stock footage to a worldwide community of producers, realizing valuable extra revenue.

Alongside this, clients archive material can be sent to a Digitizing factory, using robotic systems to upload tapes in extremely large quantities and at low cost.

Since no company or archive can afford to use the teams in the call centre to add metadata, and the timescales will be longer, home based workers, served video via broadband to their web browser, will be used to add metadata, in a similar vein to Wikipedia. Such home based workers may be incentivised by a small micro payment initially, but in order to promote quality tagging, they may be offered a cut of the revenue if a clip sells. This will enable an army of people worldwide, complete with their specialist knowledge, to be utilised.

As will be appreciated by those skilled in the art, the present invention provides a simple yet elegant solution to the problem of tagging image content with rich metadata, which in turn enables its searching. Moreover, an integrated system can be realized, which provides for the storage of tagged digital image content, with near immediate access to tagged raw footage for viewing and editing, and for easy searching and accessing of finalized footage, thereby allowing owners of rights to the footage to realize its commercial potential. The invention is not limited to applications in the shooting of commercial video or film footage, but could also be used for footage shot in non-commercial type environments, such as a hospital operating theatre. The invention could also find application in the tagging of still image content, such as photographs and the like.

Brief Description of the Drawings

Examples of the present invention will now be described in detail with reference to the accompanying drawings, in which: Figure 1 shows a schematic overview of the tagging system and procedure; Figure 2 shows a client side overview of the tagging procedure; Figure 3 illustrates the operation of the mobile Gec-positioning application; Figure 4 shows a flow diagram of the tagging process; Figure 5 shows an example of a tag pad for onscreen navigation and tag line selection; and, Figure 6 shows an example of the tag screen; and, Figure 7 shows an example of the dashboard screen;

Detailed Description

Figure 1 provides a schematic overview of a complete system according to the present invention. At the heart of the system is a Media Asset Management System (MAM) 100, which is in communication with the other component parts and provides for central control of all data and processes. A suitable MAM system is the Artesia system provided by Open Text. The interface and editing

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management may be based on MXF Server provided by Film Partners and the server management might be run by IBM Vmware.

In particular, the MAM is in communication with clients 101 from which it receives high resolution image content 102 and returns the content with synchronized metadata 102. The high resolution image content may be downloaded 102. However, as indicated, the tagged content may be returned as low resolution streaming media 103, making it suitable for local searching and editing, or may be returned as a final high resolution streaming media version 104. The client can interact with the system to obtain a tagged version of the raw video footage at low resolution 103 and perform post processing on it, before returning the finalized high resolution footage 102 for storage whilst maintaining the metadata synchronization. Clients can use any suitable editing system, such as Final Cut Pro provided by Apple, AVID or Adobe systems.

The client may also be in communication with the MAM 100 via a management application running on a mobile device having GPS facility for pinpointing the location of the device. The application will be served for compatibility with the operating system of the mobile device in question. The real-time GPS data and associated time stamp can be then uploaded via the application and associated with the particuJar project. At a later time this identifying data can be reconciled with the footage shot at the location in a time synchronized manner.

The original high resolution footage may be supplied by the client in various formats, which will often not be digital. In this case the footage is sent 105 to an ingest room 106 for digitizing prior to tagging. There will typically be a variety of different client types 101, including those with their own servers and those whose connect directly. Other types may check in and out or may only be concerned with archive material (i.e. prosumer). Provision is made for all types of clients. In a preferred implementation, all image content will be received via the ingest room, 106, 116, whether delivered by courier or uploaded as data, as it provides a fast central repository.

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Any basic metadata already associated with the content is recorded under control of the MAM 100. The digitized footage is stored in a primary data centre 110, which is mirrored by one 120 or more 130 back-up data centres. These centres typically comprise a tape and/or disc storage system 111, 121, a redundant MAM 112, 122, and a transcoding engine 113, 123. A similar procedure can be used to digitize and store archive footage supplied by clients, and which can then be tagged as and when appropriate. The archive footage is supplied to a digitizing factory 116 for digitizing, after which the high resolution digitized footage 118 can be downloaded for storage in the data centre 120. The original tapes can be stored in a long term storage facility 117.

The MAM also mediates the delivery of tagged content 141, 143 to end content customers 140 who may wish to search and obtain high resolution copies 143 of footage stored by the system. The Typically, the requested content is streamed at low resolution 141 via the web and can be searched with the aid of semantic assistance tools 144, before the customer 140 requests and obtains a high resolution version 143 of particular footage. The provision of the low resolution footage may be via a sales front end 142, which allows the customer 140 to browse and purchase media. The web portal will typically be implemented using a platform from either Microsoft or IBM web services. A separate payments system 145 manages the associated payments transactions, including processing payments received from the content customers 140 and passing on remuneration to the (client) owners of the footage with a suitable fee deduction for providing the service.

A key component of the overall process is the army of human taggers 150, who provide the input for the rich metadata tagging of the image content. The taggers 150 may be based locally in a more centralized tagging facility or may be distributed home workers. They may work individually on a given project or may be part of a team tagging a particular piece of footage. The MAM 100 is in communication with the tagging stations 150 via a tagging factory 151, which supplies low resolution copies of digital image content 152 to the taggers 150 via their respective tagging station and receives back tags 153 for association with the content. The tagging factory 151 then adds the tags as metadata to the content, the metadata being synchronized with the content. The data is stored on a database, which will typically be a variant of SQL.

Figure 2 provides a schematic overview of the process from the perspective of a client 201, starting with the initial interactions before any footage is shot 200 through the after shoot processing 210, including tagging, and the post tagging editing process 220, and on to the in post finalization of the tagged footage 230 and its provision to end content consumers 240. Typically, before filming, the client 201 (for example a production manager) visits a website, signs up for the service and downloads and installs the management application 202. After logging in, the client adds production details, such as title, number of hours of footage, characters, script and any associated media. In doing so, project file is set up 203. Barcodes and/or QR codes may be generated for association with the project and materials 204, and which may be printed out from the website 206.

Once a project file has been set up, the client goes "on set" to an actual shoot, subsequent to which all the raw image (e.g. video) footage shot during the shoot is delivered 207 to the ingest room 212 of a central processing facility via courier, where it is processed. The client receives notification of which tapes have been received 213 at the ingest facility. Subsequent to this, the client can request a review 214 if a tape is missing or if the information supplied is incorrect.

Depending on the format in which the image content has been shot, the footage may then be digitized at the ingest facility 212 in an automated process. Media with machine readable codes 211 may also be inputted. The client 201 can log in to the web application 215 to view the progress of the digitising process for each individual media unit. The client is then notified that all of the media has

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been digitised 216 and can request a review 214 ii something is not correct. The review can be performed online. The client chooses which files to start downloading and the Sync Manager 205 launches and begins downloading the selected files. The digitized footage is passed to the Tag Pipeline 217 and a tag team accepts the project. At some point the client receives a notification 218 of the scheduled start time of the metatagging process, after which the tagging process begins and metadata is generated and associated with the raw video content. The web application 215 may give an indication of time remaining until such time as the tagging is completed and notified as such 219.

In order to view and edit the digitzed content, the client 221 opens their editing suite application 223 and creates a new edit project. The relevant file then appears in the client's virtual drive' 224 under that project name. At this point the client can pull clips into their edit and can also browse and edit the metadata that has been generated until such time as they complete the review/edit. The client builds edits using low resolution proxy files locally 225. The Sync Manager 222 monitors the status of the edit project, synchronising updates on demand or automatically with the central server 226. The client is able to view the full edit online, in a streaming mode, via the application 227 and can send the edit to others 229 to view. A notification 228 of the status of the project can be sent to multiple people for approval.

Once satisfied with the edited raw footage, the client can pass the edit onto a Post house for finishing 230. The Post house team member 231 interacts with the MAM 232 and downloads high resolution files 234 through their connection, again using a download manager 233. Post production software may be used for graphics and finishing work 235 after which the edits to the high resolution footage 234 and materials are synchronized 236. The footage and edit is checked out and checked back in once the post production process is completed. The client receives an email once the Post House has completed their edit and has access to a full resolution, metatagged copy of the image content via the web application 237 for downloading and distribution. A notification 238 of the status of the project may be sent to multiple people for approval 239.

At this point the client will typically decide how the finalised footage is to be commercialised. The client can choose to deliver it to a broadcaster 241 and/or syndicate via the web 242 or alternatives means. The client can also choose what they want to archive of the footage they have on the production servers.

The client simply chooses the files they want to archive via a web interface and the selected files are backed up and stored on the long term Archive Storage 245. Finally, the client receives a bill for the project and a payment is taken via direct debit 246.

During the actual shoot, the client may run the management application or some component thereof on a mobile device having GPS facility for pinpointing the location of the device. As illustrated in Figure 3, before the shoot 300 the client 301 accesses the web application to set up a new project 302 and enters the details of the new shoot 303. The client may then download a particular mobile application 304 for interacting with the system. The mobile application will be served for compatibility with the operating system of the mobile device in question, whether it is an iPhone or an Android or MS Windows based mobile phone, or else some other type of mobile communication device, It is important to synchronise data/time settings on the camera(s) used for the shoot with the mobile device used for GPS tracking. The mobile application may generate a reminder for the user to do this, for example when the application is launched on the mobile device or a project selected for a new shoot.

During the shoot 310, the mobile application is launched 314 by the client team member 311, the shoot project is selected 313, and the application can run in the background or data can be checked in manually 312. As the mobile device 305 moves from location to location with the shoot, the onboard GPS system monitors the position of the device until the application is deactivated 306. The real-time GPS data and associated time stamp is broadcast or uploaded 307 via the application and associated with the particular specified project and stored 308.

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After the shoot 320 the high resolution footage 321 is delivered to the ingest room 322 for digitizing. At a later time the MAM 323 communicates with the location data store 308, sending the footage shoot ID and time 324, and receiving back the relevant stored Geo Data 325. This identifying data can be reconciled with the footage shot at the location in a time synchronized manner to provide a geo-tagged version 326 of the image content. As a consequence, the client can search their footage by Street name, town and postcode immediately on it arriving into the system and being reserved to them.

We now consider the actual tagging process in a little more detail with reference to Figures 4 to 7. Figure 4 provides a schematic overview of the tagging process and workflow, which is centred on the human tagger at their tagging station. Figure 5 illustrates a tag pad (or console) for onscreen navigation and tag line selection by the human tagger. Figures 6 and 7, respectively, show an example of the Tag screen and an example of the Dashboard screen, as displayed to the human tagger.

As shown in Figure 4, initially a project of videos is uploaded into a web application and appears in the Tag Pipeline 401 on the Dashboard. Team leaders 402 from each available Tag Team bid on who can achieve the best results with the footage. The projects are allocated 402 and the clips are added into the Clip Queues for each winning team. Each Tag Team Tagger 420 is located in front of a computer display wearing a headset with directional microphone and holding a games console type controller. An example of the latter is shown in Figure 5.

The Tagger logs into the Tagging software and is taken to the Dashboard 421, shown in more detail in Figure 7. A variety of information useful to the Tagger is displayed on this screen. In particular, a visual display of the Tagline for the current user 702 is presented, including the last clip completed 701, the next clip 702 awaiting tagging by the Tagger and subsequent clips 703, 704 to be tagged.

The Tagger can also see a list of team members with graphic avatars 705, what

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his/her team is due to tag, the scores of other teams and of his/her team-mates 706 and more detailed statistics relating to his/her performance and the performance of the team 707. Such information can act as incentive and motivator to the Tagger.

To begin tagging, the Tagger is presented with the first clip 423 in the Tagger's Clip Queue in the Tagging Window, which is viewed as a video stream from the Media Asset Management (MAM) System 422. The application software sets up several empty Metadata Taglines 424, and displays them on the screen next to the Tag Window. Example Taglines include: Character, Location, Story, Object, Background, Emotion, and Action. The snap shot of the Tag screen illustrated in Figure 6 shows some typical Taglines 624.

The Tagger controls the playback of the video via the control pad 430 with functions which mimic standard video playback commands, such as fast forward, rewind, pause, play and a jog-wheel. Figure 5 shows a games joy pad type console adapted for use with the invention. Navigation of the on-screen menu options 501 and jog control 502 is performed using the joystick type controllers.

Certain buttons are programmed as shortcuts for certain onscreen functions or operations, such as pause 503, dashboard 504, confirm 505, undo 506, tag reference 507 and "mark as unknown" 508. The remaining buttons 509 can be assigned to the different taglines a Tagger may typically be working with. The Tagger switches between Metadata Taglines by pressing the appropriate buttons 509 on the control pad. Whilst a Tagline is selected, the Tagger 431 speaks into the microphone to describe what he/she sees at the current point of piayback of the currently playing movie 423.

If the image content is raw footage that has been geotagged in the manner described above with reference to Figure 3, then not only wiU the location and time data be available from the GPS location system, but that data can then be referenced against and linked to a resource such as Google Maps Enterprise.

This allows the Tagger to see the location details of the image currently be

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viewed on a map on the tagging screen. Thus, for example, when the tagger sees a church on screen, the system can pick up the true name of the church using the location data. For example, the Tagger says church", and the system interrogates the map data and notes that there is only one church within 100 metres of location, named "St Matthews", and tags the church as "St Matthews".

Voice Recognition Software 432 takes the audio stream of her recorded voice as an input, converting it into text or flagging it for disambiguation in the later quality assurance process. The Voice Recognition Software also removes extraneous sounds and optional words from a list stored in the Software Settings. If the Tagger is unable to recognise a given location, character or object he/she can assign a Tag Placeholder 425, for instance "Character A", which can then be corrected in the quality assurance process. The Tagger is also able to switch to the Tag Reference screen, thereby pausing the current playback and allowing the Tagger to browse stills from other Taggers' work 426 to find a definition for the item he/she is currently trying to tag. For example, characters will be displayed in a grid with their names below them based on having been successfully tagged by others.

The Tagging Software takes the text versions of what has been said from the Voice Recognition Software and inserts them as Metadata Tags into the currently selected Metadata Tagline for the current clip at the point 427 that the word occurred in the audio stream, with adjustment for word length and the Tagger's latency', which is a setting that can be adjusted in the Software Settings. The tags are stored in a local database 433. Each Tag is broadcast 434 to all of the other Taggers in the Tagger's team, as well as to any other user working on the project, including which Tagline it relates to, the position on that Tagline and its context within other Tags. As Tags are broadcast to other Taggers, the Software will recommend Tags 635 to each Tagger based on analysis of the tags that the Tagger has already added, tags that other Tag Team Members are using, and also recommendations based on dictionary or thesaurus look-ups and semantic analysis. The suggestions may be mediated by a Tag suggestion agent 435. The tagging information is also sent to the Media Asset Management System (MAM) which stores each Tag in an SQL database and assigns it to the high resolution file.

Once the Tagger has completed tagging the current clip, the next is automatically loaded from the Clip Queue and the process continues. The process is overseen by a Quality Controller 440 for the team who is logged in to the Admin Dashboard 441. Once a given amount of video content has been tagged, the Quality Controller 440 is alerted and checks and corrects the content for errors. The Quality Controller uses Administration tools to approve tags 442, request a rerun 443 and for disambiguation 444. The Quality Controller signs off on the team's work, and the tags are committed to the main Media Asset Management System 445, and also injected into the High Resolution media files.

Once a piece of footage has been completed, a range of information relating to the tagging process is stored in the Tagging Software. Examples of such information include the accuracy of the Tagger's work, the density of keywords per minute, any unusual keywords used, and an indication if a given Tagger is the first to tag certain characters, objects and locations correctly. Other data about the Tagger and the Tag Team's performance may be stored in the Tagging Software, including scores 446 assigned to the Tag team members 447.

The Tagger can view his/her performance ranked against other team-mates and other teams in a High Score Table type display 448 on the Dashboard, and the system offers hints, tips and encouragement to the Taggers.

As indicated above, the software used to implement the invention will typically be coded as a web application, since it will be used both in the metatagging factory and also for remote, home based workers. The latter can be served video over broadband at lower resolution for archive footage tagging purposes. A variety of incentives can be supplied for remote workers including remuneration based on the quality of their tagging and the subsequent provision of the tagged content to paying end customers.

The present invention provides an innovative method of tagging image content with rich metadata and serving the tagged data to clients and end consumers.

The apparatus and system employs a number of readily available components, but also integrated in an innovative manner with proprietary interfaces. As will be appreciated by those skilled in the art, aspects of the invention can be implemented in a variety of different ways and the invention itself can be applied to a wide range of scenarios where image content can be usefully enhanced by the addition of metadata tags and the serving of the tagged content in searchable and editable form. The invention enables image content to be stored in a safe and readily accessible form and at a cost that is not prohibitive to the owners of the content. Moreover, the invention allows the creators or owners of the image content to edit and finalize raw content with increased functionality and also leverage the commercial worth of the finalized content through its enhanced searchability and provision when served over the web.

Claims

ICLAIMS1. A computer implemented method of tagging image content comprising the steps of: receiving image data comprising digital image content; displaying the digital image content visually; receiving an audio data stream comprising audio content, the audio content comprising spoken keywords describing one or more characteristics associated with the image content being displayed, respective keywords being spoken by a human tagger in response to the image content currently being displayed; identifying the keywords received in the audio content and generating metadata therefrom; and, associating the metadata with the image content as metadata tags synchronously with the occurrence of the respective keywords in the audio data stream.
2. A method according to claim 1, wherein the method further comprises the steps of: receiving an indication of a selected one of a plurality of characteristics associated with the image content currently being displayed; and, identifying a respective metadata tagline corresponding to the selected characteristic, wherein the steps of generating and associating the metadata with the image content are performed in dependence on the respective metadata tagline.
3. A method according to claim 2, wherein the method further comprises the step of displaying the tagline visually together with the respective keywords describing the selected characteristic associated with the image content currently being displayed.S
4. A method according to any preceding claim, wherein the received image data comprises digital image content having a second image resolution and wherein the method further comprises the steps of: storing the metadata in a central database; and, associating the metadata with a stored file comprising the image content having a first image resolution which is greater than the second image resolution.
5. A method according to any preceding claim, wherein the keywords are extracted from the audio data using a digital speech recognition technique.
6. A method according to any preceding claim, the method further comprising the step of filtering the audio content to remove extraneous noise and/or predetermined words.
7. A method according to any preceding claim, wherein the step of synchronously associating the metadata with the image content is performed in dependence on the length of the respective keywords
8. A method according to any preceding claim, wherein the step of synchronously associating the metadata with the image content is performed in dependence a predetermined latency for the human tagger speaking the keywords.
9. A method according to any preceding claim, wherein the characteristics associated with the image content being displayed comprises one or more of: Character, Location, Story, Object, Background, Emotion, and Action.
10. A method according to any preceding claim, the method further comprising the step of displaying tags generated from the spoken input of other human taggers working on the tagging of related image content.
11. A method according to any preceding claim, the method further comprising the step of storing performance data associated with the performance of the human tagger.
12. A method according to claim 11, the method further comprising the step of displaying the performance data of the human tagger and of other human taggers working on the tagging of related image content.
13. A method according to any preceding claim, wherein the digital image content is digital video content.
14. A method according to any preceding claim, the method further comprising the steps of: receiving data identifying the physical location where received image content was first generated and also the time at which the received image content was generated; and, associating the identifying data synchronously with the relevant image content.
15. A method according to claim 14, the method further comprising the steps of: determining, in dependence on the received identifying data, information about the physical location where the received image content was first generated; and, displaying the information about the physical location synchronously with displaying the image content.
16. A method according to claim 15, wherein the audio content received in the audio data stream comprise keywords spoken in response to the physical location information currently being displayed.
17. A method according to any of claims 14 to 16, wherein the identifying data comprises GPS data identifying the physical location.
18. A computer program product for causing a computer to execute the method steps of any preceding claim.
19. Apparatus for tagging image content, the apparatus comprising: display means for receiving image data comprising digital image content and for displaying the image content visually; means to receive audio content comprising spoken keywords describing one or more characteristics associated with the image content being displayed and to generate an audio data steam therefrom, respective keywords being spoken by a human tagger in response to the image content currently being displayed; and, processing means adapted to process the audio data steam and identify the keywords therein, the processing means being further adapted to generate metadata from the keywords and to associate the metadata with the image content as metadata tags synchronously with the occurrence of the respective keywords in the audio data stream.
20. Apparatus according to claim 19, the apparatus further comprising means to select each of a plurality of characteristics associated with the image content being displayed and to generate a signal representative thereof, wherein the processing means is adapted to identify a respective metadata tagline corresponding to each representative signal and to generate and associate the metadata with the image content in dependence on the respective metadata taglines.
21. Apparatus according to claim 20, wherein one or more of the taglines are displayed on the display means together with the keywords describing the corresponding characteristic associated with the image content currently being displayed.
22. Apparatus according to claim 20 or claim 21, wherein the selection means comprises a control pad having a plurality of keys or buttons, each of the plurality being assigned to a different characteristic.
23. Apparatus according to claim 22, wherein the control pad comprises means to navigate an onscreen menu displayed on the display means.
24. Apparatus according to claim 22 or claim 23, wherein the control pad comprises means to control the speed of playback of the image content being displayed.
25. Apparatus according to any of claims 19 to 24, wherein the audio content receiving means comprises a directional microphone.
26. Apparatus according to any of claims 19 to 25, wherein the processing means is further adapted to filter the audio signal to remove extraneous noise and/or predetermined words.
27. Apparatus according to any of claims 19 to 26, wherein the processing means is adapted to associate the metadata with the image content synchronously in dependence on the length of the respective keywords and/or in dependence a predetermined latency for the human tagger speaking the keywords.
28. Apparatus according to any of claims 19 to 27, wherein the digital image content is digital video content.
29. Apparatus according to any of claims 19 to 28, wherein the image date is raw image data.
30. An image content management system comprising: a plurality of image content tagging apparatus according to any one of claimsl9to29; a central processing system in communication with each of the plurality of image content tagging apparatus, the central processing system comprising a server for serving image content to the plurality of image content tagging apparatus and to one or more clients; and, a data store for storing image data and associated metadata, the data store being in communication with the central processing system.
31. A system according to claim 30, wherein image data comprising digital image content having a first image resolution is stored in the data store, and wherein image data comprising the digital image content having a second image resolution is served to the image content tagging apparatus, wherein the second image resolution is lower than the first image resolution.
32. A system according to claim 30 or claim 31, wherein tagged image data comprising digital image content having a first image resolution and associated metadata is stored in the data store, and wherein tagged image data comprising the digital image content having a second image resolution and the associated metadata is served to a client, wherein the second image resolution is lower than the first image resolution.
33. A system according to any one of claims 30 to 32, wherein the system further comprises a transcoder for transcoding the tagged image data.
34. A system according to any one of claims 30 to 28, wherein the system is adapted to: receive data identifying the physical location where received image content was first generated and also the time at which the received image content was generated; and, associate the identifying data synchronously with the relevant image content.
35. A system according to claims 31, wherein the system is further adapted to: determine, in dependence on the received identifying data, information about the physical location where the received image content was first generated; and, display, on the relevant tagging apparatus display means, said information about the physical location synchronously with displaying the image content.
36. A method according to claim 33 or claim 34, wherein the identifying data comprises GPS data identifying the physical location.
37. A method of serving data comprising the steps of: receiving image data comprising digital image content having a first image resolution; storing the received image data; tagging the stored image data with metadata associated with the image content; and, serving from a server the tagged image data comprising the digital image content having a second image resolution, wherein the second image resolution is lower than the first image resolution.
38. A method according to claim 37, wherein the image date is raw image data.
39. A method according to claim 37 or claim 38, wherein the digital image content is video content.
40. A method according to any of claims 37 to 39, wherein the tagged image data comprising the lower resolution image content is served over a web browser.
41. A method according to any of claims 37 to 40, wherein the lower resolution image content is searchable by reference to the associated metadata.
42. A method according to any of claims 37 to 41, wherein the lower resolution image content is searchable semantically.
43. A method according to any of claims 37 to 42, wherein the lower resolution image content of the served image data is editable while retaining the associated metadata tagging.
44. A method according to any of claims 37 to 43, further comprising the step of receiving at the server modification data relating to the served image data and automatically linking it to the stored tagged image data comprising the image content having the first resolution.
45. A method according to claim 44 when dependent on claim 43, wherein the modification data received back at the server relates to edits of the served image data.
46. A method according to claim 45, wherein the modification data received back at the server includes new image content
47. A method according to claims 37 to 46, wherein the tagged image data is served to a portable device in a format compatible with the portable device and comprising the image content having a resolution compatible with the portable device.
48. A computer program product for causing a computer to execute the method steps of any of claims 37 to 47.