Abstract: An apparatus and method for sample adaptive offset (SAO) to restore intensity shift of processed video data are disclosed. In an encoder side, the processed video data corresponding to reconstructed video data, deblocked-reconstructed video data, or adaptive loop filtered and deblocked-reconstructed video data are partitioned into regions smaller than a picture. The region partition information is signaled in a video bitstream located in a position before intensity offset values syntax. At the decoder side, the processed video data is partitioned into regions according to the partition information parsed from the bitstream at a position before intensity offset values syntax. Region-based SAO is applied to each region based on the intensity offset for the category of the region-based SAO type selected.

Abstract: A method and apparatus receives input data for in-loop processing, where the input data corresponds to reconstructed or reconstructed-and-deblocked coding units of the picture. The input data is divided into multiple filter units and each filter unit includes one or more boundary-aligned reconstructed or reconstructed-and-deblocked coding units. A candidate filter is then selected from a candidate filter set for the in-loop processing. The candidate filter set comprises at least two candidate filters the said in-loop processing corresponding to adaptive loop filter (ALF), adaptive offset (AO), or adaptive clipping (AC). The in-loop processing is then applied to one of the filter units to generate a processed filter unit by using the candidate filter selected to all boundary-aligned reconstructed or reconstructed-and-deblocked coding units in said one of the filter units.

Abstract: A method and apparatus for clipping a transform coefficient are disclosed. In one implementation, a method is implemented in a video encoder for clipping a quantization level. The method operates by generating the quantization level for a transform coefficient of a transform unit by quantizing the transform coefficient according to a quantization matrix and quantization parameter, determining a clipping range in the video encoder for one or a combination of a fixed-range clipping condition and a dynamic-range clipping condition, and clipping the quantization level according to the clipping range to generate a clipping-processed quantization level. The quantization level is clipped within a fixed clipping range from -m to m?1 for the fixed-range clipping condition and m corresponds to 128, 32768, or 2147483648.

Abstract: A method and apparatus for deblocking reconstructed video in a video coding system. The method receives reconstructed pixel data, wherein the reconstructed pixel data is configured into LCUs (largest coding units) and each LCU is divided into blocks. The method then identifies horizontal block edges of the blocks in the LCUs, applies first vertical filtering to the reconstructed pixel data corresponding to one or more first lines above a first horizontal block edge in the first edge group, and applies second vertical filtering to the reconstructed pixel data corresponding to one or more second lines above a second horizontal block edge in the second edge group, wherein a first number of said one or more first lines is smaller than a second number of said one or more second lines.

Abstract: A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed.

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) for a motion vector (MV) of a current block of a current picture in Inter, or Merge, or Skip mode. The method selects a co-located block corresponding to a co-located picture and receives one or more reference motion vectors (MVs) of one or more co-located reference blocks associated with the co-located block. The method also determines a search set and determines a search order for the search set, if the search MV corresponding to the given reference list is not available, the search order then searches the search MV corresponding to a reference list different from the given reference list. Finally, the method determines the MVP for the current block based on the search set and the search order and provides the MVP for the current block.

Abstract: A method and apparatus of predictive Intra coding of a block are disclosed. In one embodiment according to the present invention, a set of Intra prediction modes is determined, and predictive Intra coding is applied to a prediction unit (PU) of an image based on one or more neighboring PUs according to a current Intra prediction mode. The current Intra prediction mode is selected from the set of Intra prediction modes and the current Intra prediction mode is predicted using most probable modes (MPMs) and remaining modes. A number of the remaining modes is kept as a power of 2. For example, the 32 remaining modes can be represented using 5-bit fixed length codes.

Abstract: A method and apparatus for improved intra prediction mode coding are disclosed. Intra prediction exploits the spatial correlation within a picture or within a picture region. In High-Efficiency Video Coding (HEVC), a coding scheme for the intra luma prediction mode is considered, where the intra prediction mode of a current block is compared with the minimum of two intra luma prediction modes corresponding to two neighboring blocks. If the intra prediction mode of the current block is the same as the minimum of the two neighboring intra luma prediction modes, a single bit is transmitted to indicate the case. Otherwise, information for the current intra prediction mode is transmitted in fixed-length codeword. The present invention provides multiple intra prediction mode candidates based on neighboring intra prediction modes so that there is a better chance for predictor hit. Accordingly, improved coding efficiency is achieved.

Abstract: A method for decoding of a video bitstream including receiving coded data for a 2N×2N coding unit (CU) from the video bitstream, selecting one or more first codewords according to whether asymmetric motion partition is disabled or enabled, selecting one or more second codewords when a size of the 2N×2N CU is equal to a smallest CU size, wherein none of the second codewords corresponds to INTER N×N partition when N is 4, determining a CU structure for the 2N×2N CU from the video bitstream using the first codewords or the second codewords, and decoding the video bitstream using the CU structure. A corresponding method for encoding a 2N×2N coding unit of video data is also disclosed.

Abstract: A portable electronic device including an ultrasound transmitter, an ultrasound receiver, and a processing unit is provided. The ultrasound transmitter sends ultrasonic signals, while the ultrasound receiver receives reflected ultrasonic signals from an object. The ultrasound transmitter and the ultrasound receiver are disposed to form a reference axis. The processing unit processes the reflected ultrasonic signals to obtain a time-frequency distribution thereof, and determines a 1D gesture corresponding to projection loci of movements of the object on the reference axis according to the time-frequency distribution.

Abstract: A method and apparatus for Sample Adaptive Offset (SAO) processing of video data in a video decoder are disclosed. In an embodiment, the method includes receiving a block of processed-reconstructed pixels associated with a picture from a media or a processor, wherein the block of processed-reconstructed pixels are decoded from a video bitstream; determining a SAO type index from the video bitstream, wherein the SAO type index is decoded according to truncated unary binarization, the SAO type index is decoded using CABAC (context-based adaptive binary arithmetic coding) with one context, or the SAO type index is decoded by CABAC using a context mode for a first bin associated with the SAO type index and using a bypass mode for any remaining bin associated with the SAO type index; and applying SAO processing to the block of processed-reconstructed pixels based on SAO information including the SAO type index.

Abstract: An electronic device controlling method and a user registration method are provided. In the electronic device controlling method, when a target device receives a first and a second control commands which are identical, but performed by different users simultaneously or separately, the target device performs a first predetermined operation based on an identity of the user performing the first control command, and performs a second predetermined operation based on an identity of the user performing the second control command. In the user registration method, a user registered identity model corresponding to a user to be registered is established according to identity information of the user, and is mapped to a user profile comprising a relationship between the control commands and the predetermined operations. By acquiring the registered information, the target device is able to perform the user dependent operations.

Abstract: A method and apparatus for clipping a transform coefficient are disclosed. In one implementation, a method is implemented in a video encoder for clipping a quantization level. The method operates by generating the quantization level for a transform coefficient of a transform unit by quantizing the transform coefficient according to a quantization matrix and quantization parameter, determining a clipping condition in the video encoder based on video source bit-depth, and clipping the quantization level according to the clipping condition to generate a clipping-processed quantization level.

Abstract: A method and apparatus for chroma intra prediction for a current chroma block with reduced line memory requirement are disclosed. The chroma intra predictor is derived from reconstructed luma pixels of a current luma block using a model with parameters. In various embodiments according to the present invention, the derivation of the parameters relies on a reconstructed luma pixel set corresponding to neighboring reconstructed luma pixels from causal luma neighboring areas of the current luma block, wherein said causal luma neighboring areas include a first area corresponding to reconstructed luma pixels above a horizontal luma block boundary on a top side of the current luma block, and wherein the reconstructed luma pixels from the first area that are included in the reconstructed luma pixel set are from a luma pixel line immediately above the horizontal luma block boundary.

Abstract: A method and apparatus for luma-based chroma intra prediction for a current chroma block are disclosed. The chroma intra predictor is derived from reconstructed luma pixels of a current luma block according to the chroma sampling format. Depending on the chroma sampling format, either sub-sampling, down-sampling or no processing is applied to the reconstructed luma pixels in horizontal or vertical direction. The information associated with the chroma sampling format can be incorporated in the sequence parameter set (SPS), the picture parameter set (PPS), the adaptation parameter set (APS) or the slice header of a video bitstream.

Abstract: A method and apparatus for deblocking of reconstructed video are disclosed. In one embodiment, the method divides a block boundary into two sub-boundaries and separates lines or column across the sub-boundaries into two groups. The deblocking filter decision for each group is determined based on the lines or columns in the respective group. In another embodiment, the method divides block edges of blocks in the LCUs into two edge groups, where the first edge group corresponds to horizontal block edges between two LCUs and the second edge group corresponds to remaining block edges not included in the first edge group. The number of lines processed by a vertical filter in the first edge group is less than the number of lines processed by a vertical filter in the second edge group. Accordingly, a system embodying the present invention has reduced storage requirement.

Abstract: An apparatus and method for video coding having intra-slice deblocking, intra-slice adaptive loop filter, and intra-slice adaptive offset are disclosed. In a video coding system, a picture is often divided into slices and each slice is independently processed so that errors or missing data from one slice cannot propagate to any other slice within the picture. In the recent high efficiency video coding (HEVC) development, deblock filtering (DF), adaptive loop filter (ALF) and adaptive offset (AO) may be applied to reconstructed slices. When the processing is applied across slice boundaries, it may rely on pixels outside the current slice and cause dependency of the current slice on other slice(s). Consequently, the DF/ALF/AO processing on a reconstructed slice may have to wait until the reconstructed slices that it is dependent from complete the DF/ALF/AO processing. To overcome the slice boundary issue, intra-slice DF/ALF/AO is developed that does not rely on any pixel outside the currently slice.

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) are disclosed. The MVP is selected from spatial MVP and temporalone or more MVP candidates. The method determines a value of a flag in a video bitstream, where the flag is utilized for selectively disabling use of one or more temporal MVP candidates for motion vector prediction. The method selects, based on an index derived from the video bitstream, the MVP from one or more non-temporal MVP candidates responsive to the flag indicating that said one or more temporal MVP candidates are not to be utilized for motion vector prediction. Further, the method provides the MVP for the current block.

Abstract: In HEVC (High Efficiency Video Coding), a 2N×2N coding unit can be partitioned into various partition types hierarchically. The coding system uses a criterion to determine the best partition, where RD-rate is often used as the criterion. N×N partition at level k becomes redundant if 2N×2N at level k+1 will be evaluated. In order to eliminate the above redundancy, the allowable partition sizes are constrained according to a method previously disclosed. In the current invention, the complexity is further reduced. According to one embodiment, N×N partition is not allowed for any INTER mode regardless of the coding unit size. Furthermore, flexibility is provided so that either the method and apparatus with further complexity reduction can be selected or an alternative method and apparatus can be selected. Syntaxes to support embodiments according to the present invention are also disclosed.

Abstract: A method for three-dimensional video encoding or decoding includes receiving first data associated with a current block of a current frame corresponding to a current view; determining a derived disparity vector for disparity-vector based motion-compensated-prediction (DV-MCP) of the current block, wherein the derived disparity vector is derived from a constrained neighboring block set of the current block, and the constrained neighboring block set corresponds to one or more spatial neighboring blocks on left side of the current block, one or more collocated blocks of the current block, or both said one or more spatial neighboring blocks on the left side and said one or more collocated blocks of the current block; and applying inter-view predictive encoding or decoding to the first data based on the derived disparity vector.