Method for embedding spatially variant metadata in imagery

• US 20040223626A1
• Filed: 05/09/2003
• Published: 11/11/2004
• Est. Priority Date: 05/09/2003
• Status: Abandoned Application

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Velazquez, Belimar, Honsinger, Chris W., Parada, Robert J. Jr., Burns, Peter D.
• Application Number:
  US10/434,780
• Publication Number:
  US 20040223626A1
• Time in Patent Office: Days
• 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 1/005 Robust watermarking, e.g. average attack or collusion attack resistant
• CPC Class Codes: G06T 2201/0051 Embedding of the watermark in the spatial domain
• CPC Class Codes: G06T 2201/0061 Embedding of the watermark in each block of the image, e.g. segmented watermarking

Abstract

A method of steganographic encoding data into an image which encoded data is related to image processing functions that may be used to process the image, the method comprises the steps of providing a dispersed message dimension; providing a grid spacing value; providing an array of object identifiers and associated object locations based on the grid spacing value; embedding an object identifer at a first location into the image; embedding a second object identifier at a second location, wherein the the second location is an integer, non-zero multiple of the grid spacing value.

Claims

1. A method of steganographic encoding data into an image which encoded data is related to image processing functions that may be used to process the image, the method comprising the steps of:

a) providing a dispersed message dimension;

b) providing a grid spacing value;

c) providing an array of object identifiers and associated object locations based on the grid spacing value;

d) embedding an object identifer at a first location into the image; and

e) embedding a second object identifier at a second location, wherein the the second location is an integer, non-zero multiple of the grid spacing value.

2. The method as in claim 1, wherein the grid spacing value is less than the dispersed message dimension.

5. The method as in claim 3 further comprising the step of rendering an image on a device in accordance with claim 1.

3. A method of displaying an image having steganographic encoded data which encoded data is related to image processing functions that may be used to process the image, the method comprising the steps of:

a) extracting a first object identifer at a first location from the image;

b) extracting a second object identifier at a second location from the image;

c) performing an image processng function at the first location in accordance with the first object indentifier; and

d) performing an image processng function at the second location in accordance with the second object identifier.

4. The method as in claim 3 further comprising the step of providing the first location and second location on a grid and the extractions are performed using a dispersed message whose dimension is greater than the grid spacing value.

6. A system for processing a digital image, the system comprising:

a) a mechanism for steganographically embedding spatially varying metadata;

b) a mechanism extracting the steganographically embedded spatially varying metadata; and

c) a mechanism for using the extracted spatially varying metadata to determine one or more digital image processing steps.

7. The system as in claim 6 further comprising the steps of applying one or more of the determined processing steps to the digital image.

8. The system as in claim 7 wherein the applying step includes applying either indiviually or in any combination scene balance, tone scale manipulation, sharp adjustment, noise reduction, and defect correction.