System and method for coding image frames
First Claim
Patent Images
1. A method comprising:
- before forming images with first and second image frames, modifying at least a first pixel value in a first portion of the first image frame to create a first difference between the first pixel value in the first image frame and a first pixel value in a first portion of the second image frame that, at least in part, represents a first code, including modifying the first pixel value in the first image frame within a range of pixel values that are substantially visually imperceptible to a viewer when the first and second image frames are displayed; and
providing the first image frame, with the modified first pixel value, and the second image frame to a display device for display at different times.
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Abstract
A method including modifying at least a first pixel value in a first portion of a first image frame to create a first difference between the first pixel value in the first image and a first pixel value in a first portion of a second image frame that, at least in part, represents a first code and providing the first image frame and the second image frame to a display device for display at different times is provided.
59 Citations
5 Claims
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1. A method comprising:
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before forming images with first and second image frames, modifying at least a first pixel value in a first portion of the first image frame to create a first difference between the first pixel value in the first image frame and a first pixel value in a first portion of the second image frame that, at least in part, represents a first code, including modifying the first pixel value in the first image frame within a range of pixel values that are substantially visually imperceptible to a viewer when the first and second image frames are displayed; and providing the first image frame, with the modified first pixel value, and the second image frame to a display device for display at different times.
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2. A program product comprising:
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a program executable by a processing system for causing the processing system to; access first and second captured images, the first captured image captured to include at least a portion of a first image that is displayed at a location of a display surface and the second captured image captured to include at least a portion of a second image that is displayed at the location of the display surface; and decode a code from a pixel value in the first captured image corresponding to the location and a pixel value in the second captured image corresponding to the location, the code comprising a difference between the pixel value in the first captured image and the pixel value in the second captured image, wherein the difference is substantially visually imperceptible to a viewer when the first and second images are displayed; and a non-transitory computer-readable medium for storing the program. - View Dependent Claims (3, 4, 5)
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Specification