Browse Prior Art Database

Multiple Area DataHiding Method

IP.com Disclosure Number: IPCOM000013463D
Original Publication Date: 2001-Oct-22
Included in the Prior Art Database: 2003-Jun-18

Publishing Venue

IBM

Abstract

Disclosed is the technique of the Watermarking technology that allows users to embedded/retrieved multiple information to/from a single piece of digital contents. The technique consists of two parts. (1) Embedding multiple watermarks, that are not interfere to each other, into a single digital content and (2) Retrieving any but only one watermark data from the specified region in the digital content, which shows the strongest watermark signal in that specified region. The technical feasibility of this technique is confirmed by using IBM DataHiding technology for still images, but it is also applicable to audio files as well as motion pictures. DataHiding Technology This technique uses “Invisible and robust” watermarking technology, that is robust against image editing such as Trimming, Compression, Rotation, etcþ. Watermark information is in embedding image area itself, thus, it can retrieve watermark information from editing embedding image, not need additional area information file such as frame information. DataHiding key