USER TERMINAL DEVICE, SERVER DEVICE, SYSTEM AND METHOD FOR ASSESSING QUALITY OF MEDIA DATA

• US 20140140612A1
• Filed: 06/21/2011
• Published: 05/22/2014
• Est. Priority Date: 06/21/2011
• Status: Active Grant

• Current Assignee: Thomson Licensing (Vantiva SA)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Xie, Kai, Gu, Xiao Dong, Chen, Zhibo
• Granted Patent: US 9,202,269 B2
• Time in Patent Office: Days
• US Class Current: 382/159
• CPC Class Codes: G06Q 30/0278 Product appraisal
• CPC Class Codes: G06T 7/0002 Inspection of images, e.g. flaw detection
• CPC Class Codes: G06V 10/40 Extraction of image or video features
• CPC Class Codes: H04L 41/5067 Customer-centric QoS measurements
• CPC Class Codes: H04N 17/004 for digital television systems
• CPC Class Codes: H04N 21/23418 involving operations for analysing video streams, e.g. detecting features or characteristics television picture signal circuitry for scene change detection H04N5/147; filtering for image enhancement G06T5/00; methods or arrangements for recognising scenes G06V20/00; arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/251 Learning process for intelligent management, e.g. learning user preferences for recommending movies details of learning user preferences for the retrieval of video data in a video database G06F16/739; computer systems using learning methods G06N3/08
• CPC Class Codes: H04N 21/475 End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
• CPC Class Codes: H04N 21/6582 Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number arrangements where receivers interact with the broadcast H04H20/38

Abstract

A user terminal device, a server device, a system and a method for assessing quality of media data are described. The user terminal device is used for extracting artefact features from the media data and for communicating the features to the server device which is then used for determining a quality score using the artefacts and an artefact/quality score database accessible by the server device. The score, transmitted to the user terminal device, is presented to a user from which a subjective quality score and a request for re-determination are received which the user terminal device communicates to the server device. This in turn is used for re-determining the quality score and for transmitting back the re-determined quality score wherein the quality score is re-determined using the received artefacts, the received subjective quality score and the artefact/quality score database.

Claims

1. A user terminal device comprising

means for extracting artefact features from media data,

Means for transmitting the extracted features to a server device,

Means for receiving quality scores for the media data from the server device,

Means for presenting a received quality score to a user, and

Means for receiving, from the user, a subjective quality score and a request for re-determining the quality score wherein

the means for transmitting is adapted for communicating the request for re-determining the quality score and the subjective quality score to the server device.

5. System comprising a user terminal device according to claim 1 and a server device.

2. A server device comprising means for receiving, from a user terminal device, artefact features extracted from media data,

Means for determining a quality score for the media data using the received artefacts,

Means for transmitting the determined quality score to the user terminal device, and

Means for receiving, from the user terminal device, a request for re-determining of the quality score and a subjective quality score wherein

The means for determining a quality score is adapted for re-determining the quality score for the media data further using the received subjective quality score.

3. Device according to claim 2, wherein said means for determining a quality score is trained using an artefact/quality score database and wherein the device is further adapted for using at least the received artefacts and the received subjective score for re-training the means for determining a quality score.

4. Device according to claim 3, further using the artefact/quality score database for re-training said means for determining a quality score.

6. Method for assessing quality of media data, comprising the steps of

Using a user terminal device for extracting artefact features from the media data and for communicating the extracted features to a serving device,

Using the server device for determining a quality score for the media data, wherein the quality score for the media data is determined using the received artefacts,

Using the server device for transmitting the determined quality score to the user terminal device,

Using the user terminal device for presenting the received quality score to a user and for receiving, from the user, a subjective quality score and a request for re-determining the quality score,

Using the user terminal device communicating the request for re-determining the quality score and the subjective quality score to the server device,

Using the server device for re-determining the quality score for the media data, wherein the quality score for the media data is re-determined further using the received subjective quality score, and

Using the server device for transmitting the re-determined quality score to the user terminal device.

7. Method according to claim 6, wherein said server device is trained using an artefact/quality score database, said method further comprising using at least the received artefacts and the received subjective score for re-training the server device.

8. Method according to claim 7, further comprising further using the artefact/quality score database for re-training.