Method of embedding watermark into digital image
AssigneeLG Electronics Inc.
InventorsA. Mayboroda, S. Smolentsev, M. Sall, V. Redkov, A. Tikhotsky
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Abstract
Methods of embedding and detecting a watermark into-from a digital image are disclosed. A method of embedding a watermark in accordance with an embodiment of the present invention into a digital image, the method comprising: generating a difference from an original image; segmenting said difference image into sub-regions; and calculating a watermark block into each sub-region by adding said watermark block with pixel values of each sub-region.
Claims8
A method of embedding a watermark into a digital image, the method comprising:
- generating a difference from an original image;
- segmenting said difference image into sub-regions;
- and
- calculating a watermark block into each sub-region by adding said watermark block with pixel values of each sub-region.
A method of detecting a watermark of a digital image, the method comprising:
- generating a difference image from an original image, wherein a watermark sequence is embedded into said original image;
- segmenting said difference image into sub-regions;
- calculating a convolution set of a pseudo random sequence and at least one pixel of each sub-region;
- and
- estimating a watermark data bit corresponding to each sub-region by using said convolution set.
Dependencies are inferred from the claim text.