Color image or video processing

• US 7,693,300 B2
• Filed: 06/24/2008
• Issued: 04/06/2010
• Est. Priority Date: 02/14/2000
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Reed, Alastair M., Rhoads, Geoffrey B.
• Primary Examiner(s): Desire; Gregory M
• Application Number:
  US12/145,277
• Publication Number:
  US 20090003648A1
• Time in Patent Office: 651 Days
• Field of Search: 380/28, 380/37, 380/42, 380/51, 382/100, 382/162, 382/232, 382/251
• US Class Current: 382/100
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 1/0028 Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
• CPC Class Codes: G06T 1/0064 Geometric transfor invariant watermarking, e.g. affine transform invariant
• 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: H04H 20/31 using in-band signals, e.g. subsonic or cue signal
• CPC Class Codes: H04N 1/32154 Transform domain methods H04N1/32309 takes precedence
• CPC Class Codes: H04N 1/32203 Spatial or amplitude domain methods H04N1/32309 takes precedence
• CPC Class Codes: H04N 1/32208 involving changing the magnitude of selected pixels, e.g. overlay of information or super-imposition H04N1/32219, H04N1/32224 take precedence
• CPC Class Codes: H04N 1/32229 with selective or adaptive application of the additional information, e.g. in selected regions of the image H04N1/32213 takes precedence
• CPC Class Codes: H04N 1/32251 in multilevel data, e.g. greyscale or continuous tone data
• CPC Class Codes: H04N 1/32288 Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
• CPC Class Codes: H04N 1/32293 Repeating the additional information in a regular pattern
• CPC Class Codes: H04N 1/32309 in colour image data
• CPC Class Codes: H04N 1/32352 Controlling detectability or arrangements to facilitate detection or retrieval of the embedded information, e.g. using markers for decoding, detection or retrieval operations H04N1/32149 and subgroups take precedence
• CPC Class Codes: H04N 19/467 characterised by the embedded information being invisible, e.g. watermarking
• CPC Class Codes: H04N 19/645 by grouping of coefficients into blocks after the transform
• CPC Class Codes: H04N 21/23892 involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
• CPC Class Codes: H04N 21/44008 involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/4627 : Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/8358 : involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 2201/3233 : of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/327 : which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3284 : for error correction
• CPC Class Codes: H04N 7/163 : by receiver means only

Abstract

The presently claimed invention relates generally to color signal processing. One claim recites a method including: obtaining a measure or value associated with one or more color characteristics of data representing video or imagery; based at least in part on the measure or value, determining for the data those samples that should receiving steganographic encoding; transforming at least some of the data into a transform domain; and utilizing a programmed electronic processor, altering transform domain coefficients of the at least some data that has been transformed to steganographically encode the data. Of course, other claims and combinations are provided.

Claims

1. A method comprising:

obtaining a measure or value associated with one or more color characteristics of data representing video or imagery;

based at least in part on the measure or value, determining for the data those samples that should receive steganographic encoding;

transforming at least some of the data into a transform domain; and

utilizing a programmed electronic processor, altering transform domain coefficients of the at least some data that has been transformed to steganographically encode the data.

2. A computer readable medium on which is stored software or instructions to cause an electronic processor to perform the method of claim 1.

3. A programmed computing device comprising instructions stored in memory, said instructions are executable by said programmed computing device to perform the acts of claim 1.

4. An apparatus comprising:

electronic memory for buffering a measure or value associated with one or more color characteristics of data representing video or imagery;

an electronic processor programmed for;

determining for the data those samples that should receive steganographic encoding, the determining being based at least in part on the measure or value;

transforming at least some of the data into a transform domain; and

altering transform domain coefficients of the at least some data that has been transformed to steganographically encode the data.

5. The apparatus of claim 4 in which said electronic processor is operating to perform at least one of the functions recited therein.