Method and system for embedding an image into two other images

Abstract

A method and system embeds an image into two images by performing a digital halftoning process on a Cartesian product of color spaces.

1 . A method of embedding an image into two images, comprising:
 performing a digital halftoning process on a Cartesian product of color spaces to embed the image into the two images.   
   
   
       2 . The method of  claim 1 , wherein the digital halftoning process comprises a vector error diffusion method. 
   
   
       3 . The method of  claim 1 , wherein the digital halftoning process comprises a modified error diffusion method. 
   
   
       4 . The method of  claim 1 , wherein the digital halftoning process comprises an iterative isotropic halftoning process. 
   
   
       5 . The method of  claim 1 , wherein one of said two images is a rotated version of the other of said two images. 
   
   
       6 . The method of  claim 1 , wherein more than one image is embedded into said two images. 
   
   
       7 . The method of  claim 1 , wherein said image is embedded into more than said two images. 
   
   
       8 . The method of  claim 1 , wherein said images comprise color images. 
   
   
       9 . The method of  claim 1 , wherein said images comprise black and white images. 
   
   
       10 . The method of  claim 1 , wherein said images comprise multi-bit images. 
   
   
       11 . A method of deploying computing infrastructure, comprising integrating computer-readable code into a computing system, wherein the code in combination with the computing system is capable of performing the method of  claim 1 . 
   
   
       12 . A method of extracting an image from two images, comprising:
 extracting the image from the two images using a binary operation on each pair of pixels from the two images.   
   
   
       13 . The method of  claim 12 , wherein extracting the image from the two images comprises extracting the image from more than two images. 
   
   
       14 . The method of  claim 12 , wherein extracting the image comprises extracting more than one image from the two images. 
   
   
       15 . A method of embedding a color image into two color images comprising:
 decomposing the color images into separate images in their color planes;   for each color plane, performing a digital halftoning process on a Cartesian product of pixel value spaces to embed the image into the two images; and   combining the halftone images of the color planes into a single color image.   
   
   
       16 . A method of embedding a multi-bit image into two multi-bit images, comprising:
 performing a digital halftoning process on a Cartesian product of pixel value spaces to embed the image into the two images.   
   
   
       17 . A signal-bearing medium tangibly embodying a program of machine-readable instructions executable by a digital processor, the program comprising:
 instructions for performing a digital halftoning process on a Cartesian product of color spaces to embed the image into the two images.   
   
   
       18 . A system for embedding an image into two images comprising:
 means for providing said image to be embedded into said two images; and   means for performing a digital halftoning process on the Cartesian product of color spaces to embed the image into the two images.   
   
   
       19 . A system for embedding an image into two images comprising:
 an image input device; and   a digital halftoning device that performs a digital halftoning process on a Cartesian product of color spaces to embed the image received by the image input device into the two images.   
   
   
       20 . The system of  claim 19 , further comprising a gamut mapping device that performs gamut mapping on the image received by the image input device.