Abstract: A co-located block of a video block to be decoded is determined. The co-located block is either (i) a forward reference block or (ii) a backward reference block. A reference motion vector is selected for the video block. When the co-located block is backward reference block and has a forward reference motion vector and a backward reference motion vector, the forward reference motion vector of the co-located block is selected. When the co-located block is forward reference block and has a forward reference motion vector and a backward reference motion vector, the backward reference motion vector of the co-located block is selected. When the co-located block has only one reference motion vector, the one reference motion vector of the co-located block is selected. When the co-located block has no reference motion vector, a zero-reference motion vector for the video block is selected.

Abstract: A video decoder is configured to determine a first motion vector for a first block of video data; perform motion vector refinement on the first motion vector for the first block to determine a refined motion vector for the first block of video data; determine that a second block of video data is coded in a mode that utilizes a motion vector associated with the first block as a motion vector predictor; in response to determining that the second block of video data is coded in the mode that utilizes the motion vector associated with the first block as a motion vector predictor and in response to performing the motion vector refinement on the first motion vector for the first block, use a different motion vector than the first refined motion vector as the motion vector predictor associated with the first block.

Abstract: A reference frame decoding method includes obtaining a first reference frame, where the first reference frame is a first picture frame on which decoding reconstruction has been performed or a first interpolated picture frame obtained by pixel interpolation on the first picture frame, parsing a bitstream to obtain mapping parameters, determining to-be-determined coefficients of a preset mapping function according to the mapping parameters, obtaining, in the first reference frame according to the mapping function whose to-be-determined coefficients have been determined, a first pixel unit having a mapping relationship with a second pixel unit of a second reference frame, and assigning a pixel value of the first pixel unit to the second pixel unit.

Abstract: The present invention provides low complexity planar mode coding in which a value of a bottom-right pixel in a prediction block is calculated from a value of at least one pixel in at least one of an array of horizontal boundary pixels and an array of vertical boundary pixels. Linear and bi-linear interpolations on the value of the bottom-right pixel and values of at least some of the horizontal and vertical boundary pixels to derive values of remaining pixels in the prediction block. A residual between the prediction block and an original block is signaled to a decoder.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. The processing circuitry decodes prediction information for a current block in a current picture from a coded video bitstream. The prediction information is indicative of a prediction mode that is based on a merge candidate list. The processing circuitry constructs, in response to the prediction mode, the merge candidate list that includes at least a first block vector candidate with a reference picture being the current picture. Then the processing circuitry adds a new merge candidate that is calculated by averaging two candidates in the merge candidate list. Further, the processing circuitry determines, a predictor from the merge candidate list, and reconstructs at least a sample of the current block according to the determined predictor.

Abstract: A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures.

Abstract: The present invention relates to a video decoder and controlling method thereof. Particularly, the present invention is characterized in dividing a block into subblocks of a prescribed unit, selecting prescribed subblocks according to a priority, and decoding the selected prescribed subblocks.

Abstract: A method of video decoding for a video decoder includes receiving a coded video bitstream and obtaining, for a current block from the coded video bitstream, one or more initial motion vectors. The method further includes determining whether a decoder side motion vector refinement process is enabled. In response to determining that the decoder side motion vector refinement process is enabled, the method further includes determining whether the one or more initial motion vectors are included in a latency region that indicates a region of one or more blocks having unrefined motion vectors. In response to determining that the one or more initial motion vectors are not included in the latency region, the method further includes performing the motion vector refinement process using the one or more initial motion vectors to generate a plurality of refined motion vectors.

Abstract: Methods, techniques, and systems for user interface remoting using video streaming techniques are provided. Example embodiments provide User Interface Remoting and Optimization System (“UIROS”), which enables the efficient remoting of pixel-oriented user interfaces on behalf of their guests using generic video streaming techniques, such as H.264, to send compressed user interface image information in the form of video frame encoded bitstreams. In one embodiment, the UIROS comprises server side support including a UI remoting server, a video encoder, and rendering support and client side support including a UI remoting client, a video decoder, and a display. These components cooperate to implement optimized UI remoting that is bandwidth efficient, low latency and CPU efficient.

Abstract: The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.

Abstract: Disclosed are a method for encoding/decoding an image and a device therefor. Particularly, a method by which a decoding device decodes an image comprises the steps of: deriving a part mode of a coding block within a predefined part mode set; decoding a motion parameter in a prediction block unit partitioned from the coding block according to the part mode; and generating a predicted block by using the motion parameter decoded in the prediction block unit, wherein the part mode set includes an asymmetric 4-block part mode, the asymmetric 4-block part mode enables four prediction blocks to be partitioned from the coding block, and a horizontal partition and/or a vertical partition can be defined as an asymmetric partition form.

Abstract: An example device for processing video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to determine whether an access unit of the video data includes a temporal motion constrained tile sets (MCTS) supplemental enhancement information (SEI) message; and decode an MCTS extraction information set (MCTS-EIS) SEI message of the access unit only when the access unit includes the temporal MCTS SEI message.

Abstract: The present invention provides a video coding intra-frame prediction method and a video coding intra-frame prediction device, wherein, the method comprises performing a bidirectional prediction of an intra-frame left and upper direction prediction and an intra-frame right and lower direction prediction on the current coding block to obtain a prediction result; weighting the prediction result obtained. Since the distance between the current coding block and the reference prediction pixel is closer, thus the prediction correlation is high, thus it could achieve the high accuracy prediction of the intra-frame prediction during the process of video coding and thus could improve the coding efficiency.

Abstract: A control method includes: estimating, in a first image within an image series, a plurality of sets including candidate regions and indexes according to image feature quantities of the first image, the candidate regions being regions in which presence of an object is estimated within the first image, the indexes being values indicating possibilities of the presence of the object in the candidate regions; obtaining movement information about movement of the object from the image series; correcting the candidate regions and the indexes in the plurality of sets based on the movement information obtained by the second processing; and determining the position of the object in the first image based on the plurality of sets including the corrected candidate regions and the corrected indexes.

Abstract: According to the present invention, an inter prediction method comprises the steps of: generating a merge candidate list for a block to be predicted, wherein the block is to correspond to a current prediction unit; deriving, on the basis of one of a plurality of merge candidates constituting the merge candidate list, motion information on the block to be predicted; and performing, on the basis of the derived motion information, a prediction on the block to be predicted so as to generate a prediction block corresponding to the current prediction unit.

Abstract: A region determination circuit determines, for a first block encoded by referring to a first prediction block generated by applying a bidirectional prediction mode for a first component of a pixel value from among blocks in a coding-target picture included in video data, a partial region to which a unidirectional prediction mode is to be applied for a second component on the basis of a difference value for the first component between corresponding pixels belonging to the first prediction block and the first block. A prediction circuit generates a second prediction block for the second component by applying a unidirectional prediction mode to the partial region and a bidirectional prediction mode to a region that is not the partial region. An encoder calculates a prediction error for the second component between corresponding pixels belonging to the first block and the second prediction block and encodes the prediction error.

Abstract: Systems and methods presented herein provide for video compression and decompression. In one embodiment, a video compression system includes a decimation filter operable to receive a video datastream, and to filter the video datastream to remove spatial data components and temporal data components of the video datastream. The system also includes a video codec operable to compress the filtered video datastream and a comparator operable to compare the video datastream to the filtered-compressed video datastream, and to determine a difference video datastream based on the comparison. The system also includes a generator operable to generate a tool for decompressing the filtered-compressed video datastream based on the difference video datastream.

Abstract: A video packaging and origination service can include one or more encoder components that receive content for encoding and transmitting to requesting entities. During the operation of the encoder components, individual encoders receive input signals for encoding and determine picture data related to the generation of an encoded segment. The encoder components exchange picture data information and individual encoder components select synchronization information based processing the exchanged picture data information. The exchange of picture data and synchronization can continue throughout the streaming process.

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

Abstract: A method and apparatus for searching for merge candidates for inter-prediction coding of a video sequence, including performing a comparison between a size of a current CU and a threshold size, based on a result of the comparison, changing a size of a search grid used to search for the merge candidates in order to construct a merge candidate list.

Abstract: Provided are image encoding and decoding methods and apparatuses using weighted bi-prediction. The image decoding method and apparatus according to one embodiment obtain one or more prefixes including a first counter value indicating the number of additional syntax elements subsequent to main syntax elements from a received bitstream, obtain the additional syntax elements including weight information and information about whether to perform weighted bi-prediction on prediction units separated for predicting a current block, based on the one or more prefixes, and generate a prediction block including a prediction value, based on the main syntax elements and the additional syntax elements.

Abstract: An image encoding and decoding apparatus and method, the image encoding and decoding apparatus includes: an encoding unit adjusting at least one weight value adaptively to the number of bits expressing each pixel of a current image, predicting a pixel value of a block of interest by performing an operation on a pixel value of at least one block having a pixel value similar to the pixel value of the block of interest among blocks included in a previous image and the at least one adjusted weight value, and encoding the pixel value of the block of interest using the predicted pixel value of the block of interest; and a decoding unit adjusting the at least one weight value adaptively to the number of bits, restoring the predicted pixel value of the block of interest by performing an operation on the pixel value of the at least one block having the pixel value similar to the pixel value of the block of interest among blocks included in the restored previous image and the at least one adjusted weight value, and dec

Abstract: An image decoding method and apparatus derive: a first candidate having a first motion vector; a second candidate having a second motion vector and a first reference picture index value that identifies a first reference picture corresponding to the second motion vector; and a third candidate having a third motion vector and a second reference picture index value that identifies a second reference picture corresponding to the third motion vector. The second and third motion vectors are first and second zero vectors. The first and second reference picture index values are different. A coded index attached to the bitstream is decoded using a maximum number of candidates including the first, second, and third candidates. The coded index indicates one candidate of the candidates. The candidate is selected based on the coded index and is used for decoding a current block.

Abstract: A video decoding method performed by a decoding apparatus includes the steps of: deriving control points (CP) for a current block; acquiring movement vectors for the CPs; deriving a sample unit movement vector in the current block on the basis of the acquired movement vectors; and deriving a prediction sample for the current block on the basis of the sample unit movement vector. According to the present invention, it is possible to effectively perform, through sample unit motion vectors, inter-prediction not only in a case where an image in the current block is plane-shifted but also in a case where there are various image distortions.

Abstract: Provided are an inter prediction method and a motion compensation method. The inter prediction method includes: performing inter prediction on a current image by using a long-term reference image stored in a decoded picture buffer; determining residual data and a motion vector of the current image generated via the inter prediction; and determining least significant bit (LSB) information as a long-term reference index indicating the long-term reference image by dividing picture order count (POC) information of the long-term reference image into most significant bit (MSB) information and the LSB information.

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.

Abstract: A method of signaling of coding mode including an IntraBC mode (Intra-block copy mode) and inter prediction mode for a picture, wherein the picture is divided into multiple coding units, the method includes receiving input data associated with a current prediction unit in a current picture, and responsive to the IntraBC mode being selected for the current prediction unit: encoding or decoding the current prediction unit using an IntraBC predictor derived based on an IntraBC reference picture selected from a reference picture list, wherein the reference picture list includes the IntraBC reference picture containing one or more reconstructed IntraBC blocks and one or more Inter reference pictures corresponding to one or more reconstructed Inter-coded pictures; generating a first reconstructed current block after said encoding or decoding the current prediction unit; and updating the IntraBC reference picture according to the first reconstructed current block.

Abstract: An apparatus configured to decode video information includes a memory and a processor in communication with the memory. The memory is configured to a memory configured to store video information associated with bitstream. The apparatus further includes a processor in communication with the memory, the processor configured to determine that a reference layer is not included in the bitstream and to receive, from an external source, a decoded base layer picture. The processor is further configured to receive, from the external source, a first indication that the picture is an intra random access point (IRAP) picture. The processor is also configured to receive a second indication whether the picture is one of an instantaneous decoder refresh (IDR) picture, a clean random access (CRA) picture, or a broken link access (BLA) picture; and to decode the video information based at least in part on the first and second indications.

Abstract: There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments information on bit-depth of a reference block of an image on a first layer and bit-depth of a current block of an image on a second layer is obtained. The obtained information is used to select one or more resampling filter parameters for filtering at least a part of a reference layer image to be used in inter-layer prediction. There are also disclosed corresponding methods, apparatuses and computer program products for video encoding and decoding.

Abstract: The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.

Abstract: Methods and systems for parallel rate-constrained motion estimation in a video encoder are provided. Embodiments of the present invention provide a solution for the problem of the reliance upon spatial dependencies when processing parallel RCME on a frame. In order to solve this problem, embodiments of the present invention determine a list of at least two Motion Vector Predictor Candidates (MVPC), determine, in parallel for at least two of said at least two MVPCs, corresponding Motion Vector Candidates (MVC) using Rate-Constrained Motion Estimation (RCME) and determine the optimal Motion Vector (MV) among the determined MVCs based on rate distortion optimization.

Abstract: The image decoding method according to the present invention comprises the steps of: determining the availability of a block adjacent to a current block; configuring a merge candidate list for the current block on the basis of the result of the determined availability; and performing motion compensation for the current block on the basis of the merge candidate list, wherein the step of determining availability comprises the steps of inducing block availability information on the adjacent block and inducing the availability of motion information on the adjacent block, and the step of determining the availability of the adjacent block is such that when there is more than one adjacent block, the availability of adjacent blocks can be determined in accordance with a predetermined order restriction.

Abstract: The invention relates to a method (100) for coding a depth lookup table, DLT, (201, 211), the depth lookup table comprising depth value information of at least a part of a 3D picture, the method (100) comprising: selecting (101) a reference depth lookup table (203, 213); determining (103) a difference depth lookup table (205, 215) based on a comparison between depth value information of the depth lookup table to be coded (201, 211) and depth value information of the reference depth lookup table (203, 213); and coding (105) depth value information of the difference depth lookup table (205, 215) according to a predetermined coding rule.

Abstract: An apparatus includes at least one processor provided with at least one memory that includes computer program code. The memory and the computer program code are configured, when working with the at least one processor, to cause the apparatus to decode, from a bitstream, quantized transform coefficient data for 16×16 transform unit, and an 8×8 quantization matrix and to inversely quantize the quantized transform coefficient data for 16×16 transform unit using a 16×16 quantization matrix. The 16×16 quantization matrix is set by duplicating at least one of two elements adjacent to each other in the decoded 8×8 quantization matrix.

Abstract: An image coding method bitstream includes: determining a maximum number of a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of a current block; deriving a first merging candidate; determining whether or not a total number of the first merging candidate is smaller than the maximum number; deriving a second merging candidate when it is determined that the total number of the first merging candidate is smaller than the maximum number; selecting a merging candidate for use in the coding of the current block from the first merging candidate and the second merging candidate; and coding, using the maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

Abstract: A method of coding is provided. The method includes comparing a cost between a bilateral reference block and each of a plurality of first and second reference block candidates in the first and second reference pictures to determine first and second refined motion vectors. The first and second reference block candidates are determined based on a step size selected from a plurality of available step sizes. The method also includes selecting a first refined reference block in the first reference picture based on the first refined motion vector and a second refined reference block in the second reference picture based on the second refined motion vector, determining a prediction block based on the first refined reference block and the second refined reference block, and displaying an image generated using the prediction block.

Abstract: In this disclosure, a hybrid digital-analog video coding scheme is described. For a video including at least two associated sequences of frames such as a stereo video, some of the frames are digitally encoded, while the others are encoded in an analog way with reference to the digital frames. For an analog frame, a previous frame in the same sequence/view and a temporally consistent frame in another sequence/view will be encoded as digital frames. These two digital frames are used to provide side information in encoding the analog frame. At decoding side, inverse operations are performed. Such “zigzag” hybrid coding significantly improves the coding efficiency while providing robustness and good visual quality.

Abstract: Provided is a motion picture encoding device that is capable of processing a large number of tasks in a parallel manner without reducing encoding efficiency. A motion picture encoding device 10 is provided with a motion vector determining unit 11 that determines the motion vector of a block to be encoded used for a motion compensation prediction from the motion vectors of adjacent blocks contained in a reference region among blocks adjacent to the block to be encoded contained in the reference region that constructs an image.

Abstract: When a coding mode selected by an encoding controlling part 1 is an intra prediction mode, an intra prediction part 4 carries out an intra-frame prediction process using pixels adjacent to a partition Pin which is generated through a division by a block dividing part 2 or pixels adjacent to a higher layer partition Pin?1 to which the partition Pin belongs to generate a prediction image (Pin).

Abstract: Groups of video frames can be compressed using reversed ordering. For a group of a video sequence having a display order, a determination is made as to whether to arrange the group in a reversed display order before a prediction process of an encoder for the group. Responsive thereto, the group is arranged in the reversed display order as an input order to the prediction process. Otherwise, the group is provided to the prediction process in the display order as the input order. In performing the prediction process, the group, received in the input order, is arranged in a coding order using a group coding structure that defines at least one backward reference frame for inclusion within a set of candidate reference frames. Multiple backward reference frames may also be defined. The group is predicted in the coding order using the set of candidate reference frames.

Abstract: In aspects of the present disclosure, a software encoder augments a hardware encoder by implementing portions of a video encoding task that are not supported by the hardware encoder while the hardware encoder implements other portions of the encoding task. The use of a software encoder to augment a hardware encoder in this manner can extend the useful life of a hardware encoder, allow the system to adapt to changes in video coding standards, and in some cases improve performance of encoding implemented by hardware or software alone. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: Techniques are described for synchronizing encoding processes between encoders. Timestamps are compared between encoders such that offsets can be determined and used by encoders to encode fragments for the same segments of media content.

Abstract: A method of decoding JVET video includes receiving a bitstream that includes encoded video data that includes encoded video data. From the encoded data, a horizontal predictor and a vertical predictor for a pixel in the current coding block may be interpolated. A coding block size may be identified to determine whether to use equal weight or unequal weights to apply to each of the horizontal and vertical predictors for calculating a final planar prediction value P(x,y) by comparing the coding block size to a coding block size threshold.

Abstract: A method and system for detection of artifacts in a video after application of an error concealment strategy by a decoder is disclosed. An absolute difference image is determined by subtraction of a current image and a previously decoded image. A threshold marked buffer is determined to replace the pixel values of the absolute difference image with a first pixel value or a second pixel value, based on comparison of pixel values with a first predefined threshold. A candidate region is determined by determining a pair of edges of the threshold marked buffer having length above a second predefined threshold, distance between them above a third predefined threshold, and pixel values between them in the absolute difference image, less than a fourth predefined threshold. Validation of candidate region is based on comparison of characteristics of the candidate region with characteristics of the current image and/or previously decoded images.

Abstract: Since time hierarchically encoded video data needs to include video data of a basic hierarchical layer, and video data cannot be generated in which a frame belonging to an upper hierarchical layer is only encoded, even in a case in which only a part of frames is processed, a basic hierarchical layer frame is needed to be included, and thus, there has been a problem that video data in which only the frame belonging to the upper hierarchical layer is encoded cannot be separately processed. In the present invention, a variable length encoding unit is disposed which encodes, for each sequence, a basic hierarchical layer existence flag showing whether or not a basic hierarchical layer is included in the sequence.

Abstract: A method and apparatus of deriving a temporal derived motion vector in a second direction based on a given motion vector in a first direction for motion vector prediction are disclosed. According to the present invention, a given motion vector for a current block is determined, where the given motion vector points from the current block in a first direction. A reference motion vector associated with a first reference block in a first reference frame is identified. Then, based on the reference motion vector and the given motion vector, a temporal derived motion vector is derived. The temporal derived motion vector points from the current block to a second reference block in a second reference frame in a second direction different from the first direction. The temporal derived motion vector is then used as one predictor for encoding or decoding of the motion vector of the current block.

Abstract: A method and apparatus for overlapped block motion compensation (OBMC) for video coding are provided. A current prediction block and a plurality of adjacent prediction blocks including an above prediction block, a below prediction block, a left prediction block, and a right prediction block are received and blended to generate a blended prediction block. Weighted samples of the current prediction block are combined with corresponding weighted samples of the above and below prediction blocks to generate an intermediate prediction block. Weighted samples of the intermediate prediction block are combined with corresponding weighted samples of the left and right prediction blocks to generate the blended prediction block.