Ammu
Satyaghosh Ammu, Hampshire GB
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20110080525 | DETECTING REPETITION IN DIGITAL VIDEO - There is provided a method of detecting repeated pictures in a sequence of video picture data, each picture of said video picture data comprising a plurality of macroblocks, the method comprising performing hierarchical motion estimation on the video picture data to provide best motion vectors for each macroblock, best motion vector sum of absolute difference values for each macro block and zero motion vector sum of absolute difference values for each macroblock, wherein the hierarchical motion estimation includes a plurality of levels, and said best motion vectors, best motion vector sum of absolute difference values and zero motion vector sum of absolute difference values for each macroblock are provided for at least a top level, providing a noise threshold value based upon the zero motion vector sum of absolute difference values from the top level of the hierarchical motion estimation, accumulating the best motion vector sum of absolute difference values for macroblocks having best motion vector sum of absolute difference values greater than the noise threshold value to provide a distortion value for the picture, and setting a repeat flag dependent upon the distortion value. An apparatus adapted to carry out the method, and a computer readable medium carrying instructions which, when executed by a computer, cause the computer to carry out the method are also provided. | 04-07-2011 |
Satya Ghosh Ammu, Alton Hampshire GB
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20110069757 | CONTENT ADAPTIVE VIDEO ENCODER AND CODING METHOD - A method of pre-processing a sequence of video picture data comprising I pictures, P pictures and B pictures, where the pictures are arranged as a plurality of Group Of Pictures (GOP) and each of the Group Of Pictures has a first picture and a plurality of Sub Group of Pictures (Sub-GOP). The method uses an analysis of the sequence of video picture data to determine a position of a scene change relative to a position of a start of a new GOP within the sequence of video picture data and then moves the start of the new GOP to coincide with the scene change by extending or decreasing a current GOP length according to whether the scene change and the start of a new GOP are within a predetermined number of pictures of each other. An apparatus for carrying out the method is also provided. | 03-24-2011 |
Satya Ghosh Ammu, Hampshire GB
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20100239019 | POST PROCESSING OF MOTION VECTORS USING SAD FOR LOW BIT RATE VIDEO COMPRESSION - A method and system for detecting and replacing spurious motion vectors in video signal compression includes determining whether a motion vector of a current macroblock is spurious by comparing the motion vector with motion vectors of motion vectors of neighbouring macroblocks; and replacing the motion vector as spurious if the difference exceeds a predetermined threshold. In particular, the method and system seeks to determine ( | 09-23-2010 |
20110182356 | A METHOD FOR THE ESTIMATION OF SPATIO-TEMPORAL HOMOGENEITY IN VIDEO SEQUENCES - There is provided a method of encoding video data, comprising estimating the spatio-temporal homogeneity of at least one portion of the video data, providing spatio-temporal homogeneity flags dependent upon the estimated spatio-temporal homogeneity of the at least one portion of the video data, and guiding the encoding process dependent on the spatio-temporal homogeneity flags. There is also provided an apparatus for carrying out the method, and a computer readable product carrying instructions which when executed carry out the method. | 07-28-2011 |
Srikanth Ammu, Morrisville, NC US
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20140083869 | Detection Of Endotoxins - A complex comprises a polyene macrolide antibiotic and an endotoxin. Methods and devices detect the complex. A polymeric material functionalized with a polyene macrolide antibiotic is employed in the devices. | 03-27-2014 |
Udaya Kiran Ammu, Santa Clara, CA US
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20140157008 | BACKUP POWER ARCHITECTURE FOR RACK SYSTEM - A computing device is associated with a circuit for sharing and distributing backup power. During normal operating conditions, a main bus bar provides power to each computing device in a rack via a main power bus of the corresponding circuit. In the event of an AC power outage, the main power bus is deactivated and a backup power path of the circuit is activated. Backup power is provided to the device from a battery of the circuit via the backup power path. A shared power path is also activated in the circuit such that backup power may be provided from the battery to the main bus bar. By providing backup power to the main bus bar, the other computing devices in the rack that do not have sufficient backup power may receive backup power from the main bus bar until AC power is restored. | 06-05-2014 |