Patent application number | Description | Published |
20130107947 | Method and System for Video Coding System with Loop Filtering | 05-02-2013 |
20140092969 | Method and Apparatus for Data Reduction of Intermediate Data Buffer in Video Coding System - A method and apparatus of data reduction of search range buffer for motion estimation or motion compensation are disclosed. The method and apparatus use local memory to store reference data associated with search region to reduce system bandwidth requirement and use data reduction to reduce required local memory. The data reduction technique is also applied to intermediate data in a video coding system to reduce storage requirement associated with intermediate data. The data reduction technique is further applied to reference frames to reduce storage requirement for coding system incorporating picture enhancement processing to the reconstructed video. | 04-03-2014 |
20140092986 | Method and Apparatus for Data Compression Using Error Plane Coding - A method and apparatus of image data compression and decompression are disclosed. According to an embodiment of the present invention, the compression method partitions the image data into access units and encodes each access unit into a bitstream according to a target bit budget. Each access unit is encoded using first data compression to generate a first bitstream and the residual data is further encoded using second data compression to generate a second bitstream if the first bitstream is smaller than the target bit budget. In one example, the second data compression comprises bit plane coding applied to bit plane-ordered data, wherein the bit plane-ordered data is generated by scanning from a most significant bit to a least significant bit of the residual data in a bit plane-wise order. The decompression method comprises steps to recover reconstructed data from the first and second bitstreams. | 04-03-2014 |
20140133574 | Method and Apparatus for Sign Data Hiding of Video and Image Data - A method and apparatus for processing transform coefficients for a video coder or encoder is disclosed in the present invention. Embodiments according to the present invention reduce the storage requirement for sign bit hiding (SBH), improve the parallelism of SBH processing or simplify parity checking. Partial quantized transform coefficients (QTCs) of a transform block may be processed before all QTCs of the transform block are received. Zero and non-zero QTCs of a scan block may be processed concurrently and the QTCs of multiple scan blocks in a transform block may also be processed concurrently when computing cost function for SBH compensation. The range for searching for a value-modification QTC may be less than the scan block to be processed. Parity checking on QTCs may be based on least significant bits (LSBs) of all QTCs or all non-zero QTCs of a scan block. | 05-15-2014 |
20140334724 | Method and Apparatus for Residue Transform - A method and apparatus for a multiple-channel image/video coding system are disclosed. A residue generation process is applied to the image/video data to generate residue data. A set of integer operations is applied to the residue data across the input channels to generate residue transformed data having multiple output channels. In one embodiment, the residue transformed data associated with a first output channel is related to the difference between a first residue data associated with a first input channel and a second residue data associated with a second input channel. In another embodiment, the residue transformed data associated with a second output channel is related to the second difference between a threshold and a third residue data associated with a third input channel, and wherein the threshold corresponds to the first truncated or rounded average of the first residue data and the second residue data. | 11-13-2014 |
20150055697 | Method and Apparatus of Transform Process for Video Coding - A method for transform processing in video coding is disclosed. Embodiments according to the present invention reduce the computational complexity of determining transform size for a processing block corresponding to a prediction block or a coding block. The transform size determination is based on encoder information or external information without comparing costs associated with different transform sizes. The encoder information can be the size of the processing block or the prediction information. The external information may correspond to the system bandwidth, the network bandwidth, the system power, the remaining energy of the battery in a mobile device, the timing budget related to performing transform for a given transform size. In another embodiment, the transform for each prediction block is performed only during cost evaluation or only during video data reconstruction. | 02-26-2015 |