Encoding auxiliary data in an image frame
A method of encoding auxiliary data in an image frame comprises dividing the image frame into one or more rectangular blocks, for at least one block within the image frame: transforming the block from the pixel to the frequency domain, defining a rectangular window within the transformed block, rece...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method of encoding auxiliary data in an image frame comprises dividing the image frame into one or more rectangular blocks, for at least one block within the image frame: transforming the block from the pixel to the frequency domain, defining a rectangular window within the transformed block, receiving auxiliary data, mapping a component of the auxiliary data to a position in the window, and inserting a luminance value in the mapped position. |
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