Patent ID: 11968344
Assignee: GOOGLE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. One or more non-transitory computer-readable media having instructions stored thereon that, when executed by one or more processors of a first system, cause the one or more processors to perform operations comprising:
receiving, from a client device, a request for an electronic document;
obtaining a watermark image (i) corresponding to a source image for display at the client device and (ii) comprising a set of encoded pixels distributed among a set of blank pixels of the watermark image such that each encoded pixel neighbors one or more blank pixels in the watermark image, wherein the encoded pixels encode a data item comprising information about a source of the source image;
sending, to the client device, (i) the electronic document, (ii) the watermark image, and (iii) data that instructs the client device to render the watermark image over a particular location within the electronic document at which the source image is designated to be displayed upon receipt of the source image from a second system different from the first system;
receiving, from the client device, an encoded source image generated by blending the watermark image with the source image at the client device;
decoding the data item from the encoded source image; and
identifying the source of the source image from the decoded data item.