Closed form non-iterative watermark embedding

摘要

The present disclosure relates generally digital watermarking and data hiding. One claim recites: receiving data representing imagery; and then, using one or more processors: transforming the data into a multi-channel color space; determining an impact of adding a color channel watermark signal image to a color direction of the received data; determining a color space direction for watermark detection; determining weighting factors based on a determined impact; weighting the color channel watermark signal with signal embedding weighting factors to yield a modified color channel watermark signal; embedding the modified color channel watermark signal in the data representing imagery with consideration of the color direction. Of course, other claims and combination are provided as well.

主权项

1. A method comprising:
obtaining data representing imagery; and then, using one or more processors:
transforming the data representing imagery into a multi-channel color space;determining an impact of adding a color channel watermark signal to a color direction of the data representing imagery, in which said determining utilizes a relationship of local distortion introduced by the color channel watermark signal to local image data in the data representing imagery, processed by a Human Visual System (HVS) response;determining a color direction for watermark detection;determining weighting factors based on a determined impact;weighting the color channel watermark signal with determined signal embedding weighting factors to yield a modified color channel watermark signal;embedding the modified color channel watermark signal in the data representing imagery with consideration of a determined color direction.