Information processing device and computer program product

• US 8,885,870 B2
• Filed: 08/11/2011
• Issued: 11/11/2014
• Est. Priority Date: 09/14/2010
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Matsushita, Tatsuyuki, Kogure, Nakaba, Zhao, Fangming, Umesawa, Kentaro, Kambayashi, Toru
• Primary Examiner(s): Fitzpatrick, Atiba O
• Application Number:
  US13/207,572
• Publication Number:
  US 20120063635A1
• Time in Patent Office: 1,188 Days
• Field of Search: None
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0028 Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
• CPC Class Codes: G06T 1/0085 Time domain based watermarking, e.g. watermarks spread over several images
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal

Abstract

According to an embodiment, an information processing device includes: an extracting unit configured to extract a feature quantity of a content; a first detecting unit configured to detect a point in the content where variation of the feature quantity is a first predetermined amount or more; a second detecting unit configured to detect components of watermark information including components corresponding to respective intervals based on the point; a determining unit configured to determine a reliability of the watermark information that is detected; and a selecting unit configured to select a first watermark information from the watermark information based on a result of determination determined by the determining unit.

Claims

1. An information processing device, comprising:

an extracting unit configured to extract a variation of a feature quantity of a content between a previous frame and a next frame at a display time;

a first detecting unit configured to detect a point in the content where the variation of the feature quantity is a first predetermined amount or more, wherein the point is where a watermark information starts to be embedded;

a second detecting unit configured to detect components of the watermark information including components corresponding to respective intervals in the content, based on the point;

a determining unit configured to determine a reliability of the watermark information that is detected; and

a selecting unit configured to select a first watermark information from the watermark information based on a result of determination determined by the determining unit.

2. The device according to claim 1, wherein

the first detecting unit, when no point where the variation of the feature quantity is the first predetermined amount or more is detected in an interval of a first predetermined length in the content, selects a point in the interval of the first predetermined length in the content based on magnitude of the variation of the feature quantity.

3. A computer program product comprising a non-transitory computer-readable medium including programmed instructions for information processing, wherein the instructions, when executed by a computer, cause the computer to perform:

extracting a variation of a feature quantity of a content between a previous frame and a next frame at display time;

first detecting configured to detect a point in the content where the variation of the feature quantity is a first predetermined amount or more, wherein the point is where a watermark information starts to be embedded;

second detecting configured to detect components of the watermark information including components corresponding to respective intervals in the content, based on the point;

determining a reliability of detected watermark information that is detected; and

selecting a first watermark information from the watermark information based on a result at the determining.