Image management system and methods using digital watermarks

• US 6,664,976 B2
• Filed: 03/13/2002
• Issued: 12/16/2003
• Est. Priority Date: 04/18/2001
• Status: Expired due to Term

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Lofgren, Neil E., Rhoads, Geoffrey B.
• Primary Examiner(s): Bella, Matthew C.
• Assistant Examiner(s): BLACKMAN, ANTHONY J
• Application Number:
  US10/100,233
• Publication Number:
  US 20020154144A1
• Time in Patent Office: 643 Days
• Field of Search: 380/51, 380/54, 382/100, 382/232, 713/176
• US Class Current: 345/634
• CPC Class Codes: G06F 16/583 using metadata automatically derived from the content
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: G06T 2201/0051 Embedding of the watermark in the spatial domain
• CPC Class Codes: G06T 2201/0052 Embedding of the watermark in the frequency domain
• CPC Class Codes: G06T 2201/0065 Extraction of an embedded watermark; Reliable detection
• CPC Class Codes: H04N 1/2179 Interfaces allowing access to a plurality of users, e.g. connection to electronic image libraries
• CPC Class Codes: H04N 1/32144 embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 1/32283 Hashing
• CPC Class Codes: H04N 2201/3215 of a time or duration
• CPC Class Codes: H04N 2201/3226 of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
• CPC Class Codes: H04N 2201/3233 of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/3236 Details of authentication information generation
• CPC Class Codes: H04N 2201/3246 of data relating to permitted access or usage, e.g. level of access or usage parameters for digital rights management [DRM] related to still images
• CPC Class Codes: H04N 2201/3247 Data linking a set of images to one another, e.g. sequence, burst or continuous capture mode
• CPC Class Codes: H04N 2201/3253 Position information, e.g. geographical position at time of capture, GPS data
• CPC Class Codes: H04N 2201/3274 Storage or retrieval of prestored additional information

Abstract

Digital watermarking technology is used in an image management system. Images are identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers. In the preferred embodiment, related images are grouped into a set of images through a common watermark identifier. A particular image within the set of images is identified through a hash of the particular image.

Claims

1. A method of managing images in a database, wherein a first image includes a first identifier steganographically embedded therein, said method comprising the steps of:

providing a first hash of the first image;

uniquely identifying the first image in the database with the first hash of the first image, wherein a second image includes the first identifier steganographically embedded therein; and

in the database, associating the second image with the first image via the first identifier.

2. The method according to claim 1, further comprising the steps of:

providing a first hash of the second image; and

in the database uniquely identifying the second image with the first hash of the second image.

3. The method according to claim 2, wherein the second image comprises a derivative of the first image.

4. A method according to claim 3, wherein related information is associated with at least the first image by the first hash of the first image.

5. The method according to claim 4, wherein the related information comprises at least one of user usage, creation time, transmission, printing, analyst notes, an audit trail, depicted geographic location, image capture time and image checkout.

6. The method according to claim 4, wherein the database comprises a plurality of databases.

7. The method according to claim 4, wherein the related information comprises at least one of metadata, location, date, permission level, security access levels, analyst comments, an audit trail, notes, files, and past usage information.

8. A method of managing a set of images, the set of images including a first image comprising a first identifier steganographically embedded therein in the form of a digital watermark and a second image comprising the first identifier steganographically embedded therein in the form of a digital watermark, said method comprising the steps of:

associating the first image with the set of images by the first identifier;

uniquely identifying the first image within the set of images with a hash of the first image;

associating the second image with the set of images by the first identifier; and

uniquely identifying the second image within the set of images with a hash of the second image.

9. The method according to claim 8, wherein the second image is a derivative of the first image.

10. The method according to claim 9, further comprising the step of storing information related to the first image in the database, wherein the information related to the first image is stored according to the hash of the first image.

11. The method according to claim 10, wherein the information related to the first image comprises at least one of metadata, location, date, permission level, security access levels, an audit trail, analyst comments, notes, files and past usage information.

12. The method according to claim 10, further comprising the step of storing information related to the second image in the database.

13. The method according to claim 12, wherein the information related to the second image is stored according to the hash of the second image.

14. The method according to claim 13, wherein the information related to the first image comprises at least one of metadata, location, date, permission level, security access levels, an audit trail, analyst comments, notes, files and past usage information.

15. A method of managing images, the images including a first image comprising a first identifier steganographically embedded therein in the form of a digital watermark and a second image comprising the first identifier steganographically embedded therein in the form of a digital watermark, said method comprising the steps of:

in a database registry, associating a first hash of the first image with a first data record associated with the first image;

in the database registry, associating a first hash of the second image with a second data record associated with the second image; and

linking the first data record and the second data record with the first digital watermark identifier.

16. A method of indexing a database managed according to the method of claim 15, said method comprising the step of:

interrogating the database registry with the first hash of the first image to locate the first data record.

17. The method of claim 16, further comprising the step of accessing the second data record through the first digital watermark identifier.

18. The method of claim 16, wherein the first data record and the second data record each respectively comprises the first image and the second image.

19. The method of claim 16, wherein the second image is a derivative of the first image.