Patent ID: 7936899
Filing Date: 2011-05-03
Classification: G06T,H04N

Abstract:
1. A watermarking apparatus using elemental images of an integrated image having three-dimensional information as a watermark, the watermarking apparatus comprising: a pickup configured to computationally pick up an elemental image watermark by three-dimensionally placing an object; a first processor configured to embed the elemental image watermark into a two-dimensional image; a second processor configured to extract the embedded elemental image watermark from the two-dimensional image; and a third processor configured to computationally reconstruct the extracted elemental image watermark to a distance-based image; wherein the first processor comprises: a random sequence generator configured to generate a random sequence for the elemental image watermark and rearrange the elemental image watermark; a discrete wavelet transform (DWT) unit configured to perform DWT function on a two-dimensional image; a quantizer configured to quantize an output of the DWT unit; and an inverse DWT (IDWT) unit configured to i) receive the rearranged elemental image watermark and the quantized value, ii) perform IDWT function on the received data, and iii) output a watermarked two dimensional image.