Lg Electronics Inc.

Viktor Vikrorovich Redkov

Mikhail Anatolyevich Sall

Alexander Leonidovich Mayboroda

Anatoli I Tikhotsky

Sergey Viktorovich Smolentsev

Anatoly Igorevich Tikhotsky

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.

Method of embedding watermark into digital image

A method of introducing a non-perceptional signal (watermark) to a digital media data is disclosed. The method is based on the representation of source digital data using a special matrix, insertion of a digital watermark into the special matrix to receive the watermarked matrix, and generation of the watermarked data using the source data and the watermarked matrix. In addition, watermark detection of the watermarked data is performed by calculating the special matrix from the watermarked data.

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St. Petersburg, Russia

Viktor Vikrorovich Redkov