New pending patent applications are published on Thursdays by the PTO. Both of today's Spotlight Applications concern aspects of digital watermarking and both involve assignees new to these pages. Assigned to Centre National De La Recherche Scientifique-CNRS (FR), the first application discloses techniques for inserting a watermark in an image and corresponding method for detecting a watermark in an image to be analyzed. Assigned to Gilbarco, the second application discloses techniques for cryptographic watermarking of content in fuel dispensing environments.
20150125026, "Method for Inserting a Watermark in an Image and Corresponding Method for Detecting a Watermark in an Image to be Analyzed," assigned to Centre National De La Recherche Scientifique-CNRS (FR).
A method is provided for inserting a digital watermark in an image by an insertion device. Inserting includes: applying a Fourier transform to the image, delivering a 2D Fourier spectrum; inserting the watermark in the Fourier spectrum delivering a modified Fourier spectrum; and applying an inverse Fourier transform to the modified Fourier spectrum delivering a watermarked image. The watermark includes a set of watermarking coefficients each associated with a distinct determined position of a given quadrant among the quadrants of the Fourier domain, the spectral coordinates u and v of which, measured along the two axes of coordinates of the given quadrant and starting from the continuous component and expressed in percentage of the dimensions U and V of the given quadrant, are such that: u>66%.times.U and v>66%.times.V. The set of positions associated with the watermarking coefficients defines a convex pattern in the given quadrant.
20150121082, "Cryptographic watermarking of content in fuel dispensing environments," assigned to Gilbarco, Inc.
Systems and methods for watermarking content and authenticating watermarked content are provided. Content is rendered on a display while watermarking information embedded in portions of the content are obtained. The watermarking information is verified to authenticate the content. If the content is not authentic, or is not authenticated within a period of time, the content can be terminated or otherwise blocked from rendering on the display.