International Business Machines Corporation

Masaaki Taniguchi

Kohichi Kamijoh

Shuhichi Shimizu

Harunobu Kubo

Seiji Nagata

Shuhichi Shimuzu

Ryoh Sugihara

A method and system is provided for assigning programs in a workflow to one or more nodes for execution. Prior to the assignment, a priority of execution of each program is calculated in relation to its dependency upon data received and transmitted data. Based upon the calculated priority and the state of each of the nodes, the programs in the workflow are dynamically assigned to one or more nodes for execution. In addition to the node assignment based upon priority, preemptive execution of the programs in the workflow is determined so that the programs in the workflow may not preemptively be executed at a selected node in response to the determination.

Dynamic scheduling in a distributed environment

To provide lossless embedding of a visible watermark in compressed motion picture data. The present invention includes a quantization/dequantization operation partfor dequantizing motion picture data that has been subjected to compression including frequency transformation and quantization, and a watermark embedding/removing operation partfor generating and embedding a pattern of a visible watermark corresponding to a motion compensated prediction in motion picture data dequantized by the quantization/dequantization operation part. The quantization/dequantization operation partquantizes motion picture data with a watermark embedded by the watermark embedding/removing operation part

Motion picture data processing device, method, and program

Watermark data that indicate additional information, such as copyright information, are optimized in accordance with the contents of object data, and the watermark data is embedded in image data. An image dividerdivides image data Vi into image blocks Iij, and corresponds a selected basic pattern Phij with each of the image blocks Iij. Orthogonal transformation unitsandgenerate DFT coefficients I'ij and P&#x2032;hij, and power element calculatorsandgenerate power elements I&#x2033;ij and P&#x2033;ij. A basic pattern adjustment unitadjusts the coefficient of P&#x2032;hij to generate P&#x2032;hijto P&#x2032;hijn. A watermark pattern generatorcalculates variations before and after P&#x2032;hijto P&#x2032;hijn are embedded in I&#x2033;ij, and selects, from P&#x2032;hijto P&#x2032;hijn, P&#x2032;&#x2033;hijto P&#x2032;&#x2033;hijthat provide variations equal to or smaller than the threshold value e. Then, the watermark pattern generatorselects, as a watermark pattern P&#x2032;ij, the pattern that is most easily detectable, and a pattern embedding unitthat adds P&#x2032;ij to I&#x2032;ij.

Data processing apparatus, image processing apparatus, and method therefor

The present invention provides methods, apparatus and systems for embedding and detecting an electronic watermark without requiring signals for geometric compensation. A particular embodiment uses a periodic pattern with repetition as an embedded pattern itself, which has information embedded as an electronic watermark, and observes the change of its period upon detection to calculate the scaling factor. When detecting the electronic watermark, the scaling factor of images is calculated from digital data that underwent the scaling processing, and then the processing to detect the electronic watermark is performed based on the obtained scaling factor.

Growing community of inventors

Yamato, Japan

Masaaki Taniguchi