Patent application number | Description | Published |
20110090955 | Predictive Adaptive Scan Ordering for Video Coding - An apparatus comprising an inter-prediction motion compensation unit, a transform unit coupled to the inter-prediction motion compensation unit, a quantization unit coupled to the transform unit such that the transform unit is positioned between the inter-prediction motion compensation unit and the quantization unit, a scanning unit coupled to the quantization unit such that the quantization unit is positioned between the transform unit and the scanning unit, and an adaptive scan order predictor unit coupled to the inter-prediction motion compensation unit, the quantization unit, and the scanning unit. An apparatus comprising an entropy decoding unit, an inverse scanning unit coupled to the entropy decoding unit, an inverse quantization unit coupled to the inverse scanning unit such that the inverse scanning unit is positioned between the entropy coding unit and the inverse quantization unit, and an adaptive scan order predictor unit coupled to the entropy decoding unit and the inverse scanning unit. | 04-21-2011 |
20110243230 | Multiple Predictor Sets for Intra-Frame Coding - An apparatus comprising a processor configured to receive a current block of an image, select an optimal prediction mode of a plurality of prediction modes for the current block, wherein the selected prediction mode corresponds to a selected one of a plurality of group-numbers and a selected one of a plurality of index-numbers, predict one of the plurality of group-numbers based on a first known group-number and a second known group-number, wherein the predicted group-number is predicted independent from any known index-numbers, clear a first flag when the predicted group-number matches the selected group-number, and set the first flag and encode the selected group-number into a coded data stream when the predicted group-number does not match the selected group-number, wherein the first flag is located in an overhead of the coded data stream. | 10-06-2011 |
20110262050 | Two-Layer Prediction Method for Multiple Predictor-Set Intra Coding - An apparatus comprising a processor configured to receive a current block of an image, determine an optimal prediction mode of a plurality of prediction modes for the current block, wherein the optimal prediction mode corresponds to either a standard predictor set or a non-standard predictor set, predict a predicted predictor set based on a first known predictor set and a second known predictor set, clear a first flag if the predicted predictor set matches the optimal predictor set; and set the first flag if the predicted predictor set does not match the optimal predictor set. | 10-27-2011 |
20120082221 | Multiple Predictor Set For Intra Coding with Intra Mode Prediction - An apparatus comprising a codec configured to predict an intra mode for a considered block based on a plurality of group numbers and a plurality of corresponding group indices for a plurality used modes of a plurality of adjacent blocks to the considered block, wherein a group number corresponding to an actual intra mode for the considered block is coded and sent if the predicted intra mode does not match the actual intra mode. Also disclosed is a network component comprising a processor configured to predict an intra mode for a considered block based on a minimum group number and a minimum group index of two used modes for two adjacent blocks of the considered block, and a transmitter configured to send coded bits of a group number for an actual intra mode for the considered block if the actual intra mode does not match the predicted intra mode. | 04-05-2012 |
20120230403 | Using Multiple Prediction Sets to Encode Extended Unified Directional Intra Mode Numbers for Robustness - An apparatus comprising a codec configured to predict an intra mode for a considered pixel block based on a plurality of coded intra modes for a plurality of adjacent pixel blocks to the considered pixel block, wherein the predicted intra mode and the coded intra modes correspond to a set of intra-frame modes that comprise a plurality of directional intra modes and at least two non-directional intra modes and that are assigned a plurality of corresponding group numbers and group index numbers, and wherein the intra mode is predicted based on the group numbers and group index numbers of the coded intra modes. | 09-13-2012 |
20120320974 | Mode Dependent Intra Smoothing Filter Table Mapping Methods for Non-Square Prediction Units - An apparatus comprising a processor configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU. | 12-20-2012 |
20130003832 | Simplified Bilateral Intra Smoothing Filter - A method comprising receiving a plurality of reference pixels, computing a plurality of filter coefficients based on differences between a reference pixel and neighboring reference pixels in the plurality of reference pixels, and combining the filter coefficients with the reference pixel and the neighboring reference pixels to generate a filtered value, wherein the filtered value is used for intra prediction. | 01-03-2013 |
20130114696 | Angular Table for Improving Intra Prediction - A method of intra prediction comprising computing a prediction block for a luma block, wherein computing the prediction block includes using a plurality of directional intra prediction modes and an angular table (angTable) comprising a plurality of entries, and wherein a value of each entry is determined via a mathematical derivation. An apparatus comprising a memory configured to store an angTable comprising a plurality of entries, wherein a value of each entry is determined via a mathematical derivation, and a processor configured to compute a prediction block for a luma block using a plurality of directional intra prediction modes and the angTable. | 05-09-2013 |
20130188696 | Reduced Look-Up Table for LM Mode Calculation - A video codec comprising a processor configured to generate a prediction block for a chroma block, wherein the prediction block comprises a plurality of predicted chroma samples, wherein each of the plurality of predicted chroma samples is based on a first plurality of reconstructed luma samples located in a corresponding reconstructed luma block, a second plurality of reconstructed luma samples located in neighboring blocks of the corresponding reconstructed luma block, and a look-up table, wherein an index of the look-up table is based on the second plurality of reconstructed luma samples, wherein an index of the look-up table has less than 63 values. | 07-25-2013 |
20130188702 | Simplification of Mode Dependent Intra Smoothing - An apparatus comprising a processor configured to determine whether to apply an intra smoothing filter for a prediction unit (PU) based on a lookup table (LUT), wherein the LUT comprises data indicating the intra smoothing filter should not be applied for any PU with a block size of 8×8 pixels and associated with directional prediction mode. The disclosure also includes a method comprising generating reference samples, determining a size of a PU block, and selecting the reference samples based on PU block size, wherein filtered reference samples are not selected for PU blocks with a size of 8×8 pixels and associated with directional prediction mode. | 07-25-2013 |
20130188703 | Reference Pixel Reduction for Intra LM Prediction - A video codec comprising a processor configured to generate a prediction block for a chroma block, wherein the prediction block comprises a predicted chroma sample, wherein the predicted chroma sample is based on a filtered reconstructed luma sample located in a corresponding reconstructed luma block, a plurality of downsampled filtered reconstructed luma samples located in positions neighboring the corresponding reconstructed luma block, and a plurality of downsampled chroma samples located in positions neighboring the chroma block. | 07-25-2013 |
20130188705 | Simplification of LM Mode - A video codec comprising a processor configured to compute an average of a plurality of reconstructed chroma samples located in neighboring blocks of a chroma block and adjacent to the chroma block, compute an intermediate variable by applying an integer function on the average of the reconstructed chroma samples, and generate a predicted chroma sample for the chroma block based on the intermediate variable. | 07-25-2013 |
20130272396 | LM Mode with Uniform Bit-Width Multipliers - A video codec comprising a processor configured to generate a predicted chroma sample for a chroma block based on a plurality of reconstructed luma samples located in neighboring blocks of a corresponding reconstructed luma block and adjacent to the corresponding reconstructed luma block, and a plurality of reconstructed chroma samples located in neighboring blocks of the chroma block and adjacent to the chroma block, wherein generating the predicted chroma sample comprises computing a plurality of multipliers, wherein each of the plurality of multipliers has a bit width no greater than an input bit depth of the chroma block, and wherein generating the predicted chroma sample does not require any multiplier that has a bit width greater than the input bit depth of the chroma block. | 10-17-2013 |
20140192898 | CODING UNIT BIT NUMBER LIMITATION - Systems, devices and methods related to video coding including a coding unit bit number limitation are described. | 07-10-2014 |