Abstract: A method of generating super resolution image data includes receiving original image data of a low resolution at an image processing device, performing motion compensation on the original image data using a current frame of image data and at least one previous frame of image data and at least one future frame of image data as reference frames, generating motion vectors, applying noise reduction to the current frame of image data and the reference frames to produce noise reduced, current frame image data, and generating a current frame of super resolution image data using the noise reduced, current frame image data.

Abstract: The invention concerns a device for inserting additional video content (inlays, secondary programs) into a main video program. Said device works in baseband within a single encoding box under the control of a common supervisor. The supervisor is configured to pass metadata associated with the images to the coder, said metadata comprising temporal, spatial and dynamic data relating to the planning of the insertion, and analysis data for the image files, which analysis data have been produced prior to the insertion. The coder receives said metadata and is configured to deduce therefrom optimization strategies for the coding that are implemented by line coding and file coding processes that are capable of being carried out simultaneously or sequentially.

Abstract: Methods and apparatus are described for improving the transmission of information over wireless communication channels. These techniques include determining available communication channels for transmitting information and determining possible physical layer packet sizes of the available channels. An information unit is partitioned into portions wherein the size of the portions are selected so as to match one of the physical layer packet sizes of the available communication channels. Another aspect is partitioning the information into a number of slices that correspond to the number of transmissions that occur during the information unit interval and assigning each partition to a corresponding transmission. The techniques can be used for various types of information, such as multimedia data, variable bit rate data streams, video data, or audio data.

Abstract: Disclosed herein is a system and method for reconstruction video information lost as a result of transmission errors. The system and method have four aspects, including: (1) changing the bit and/or packet rate; (2) inserting redundant information into the video bitstream; (3) providing automatic refresh of certain regions of the video on a periodic basis; and (4) interleaving coded macroblocks into diversity groups for transmission to spatially spread the effect of lost packets. The image reconstruction may then take advantage of these three aspects to provide an enhanced result in the presence of transmission losses.

Abstract: A removal region detection means detects a rectangular non-update region from a circumscribed rectangle of all update blocks. An update region dividing means divides the circumscribed rectangle of all update blocks into two or more rectangular update regions not including the detected non-update region. If the number of update regions after the division does not exceeds a threshold, a division processing control means recursively applies the processing by the removal region detection means on the update regions after the division, and recursively applies the processing by the update region dividing means based on the detected non-update region. The division processing control means terminates repetition of the division processing of the update region on a condition that a new non-update region is not detected any more by the removal region detection means, or that the number of update regions exceeds the threshold, whichever is satisfied earlier.

Abstract: A method or coding image information, according to the present invention, comprises the steps of: binarizing according to different techniques, index values of forward prediction, backward prediction, and bidirectional prediction, depending on whether the bidirectional prediction is applied when inter-predicting a current block; and entropy coding a binarized codeword, wherein whether to apply the bidirectional prediction when inter-predicting the current block can be determined on the basis of the size of the current block. As a result, provided are a method for binarizing an inter-prediction direction of a prediction unit having a specific size, and an apparatus using same.

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 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: An image decoding method includes: obtaining, from a bitstream, a first temporal motion vector prediction flag, which is a temporal motion vector prediction flag indicating whether or not temporal motion vector prediction is to be used, indicating that temporal motion vector prediction is not to be used on a first picture; decoding the first picture without using the temporal motion vector prediction; and decoding a second picture which follows the first picture in decoding order, with referring to a motion vector of a picture preceding the first picture in decoding order being prohibited.

Abstract: In one aspect of this disclosure, rounding adjustments to bi-directional predictive data may be purposely eliminated to provide predictive data that lacks any rounding bias. In this case, rounded and unrounded predictive data may both be considered in a rate-distortion analysis to identify the best data for prediction of a given video block. In another aspect of this disclosure, techniques are described for selecting among default weighted prediction, implicit weighted prediction, and explicit weighted prediction. In this context, techniques are also described for adding offset to prediction data, e.g., using the format of explicit weighted prediction to allow for offsets to predictive data that is otherwise determined by implicit or default weighted prediction.

Abstract: As part of a video encoding process or a video decoding process, a video coder may determine a first available disparity motion vector among spatial neighboring blocks of a current block of the video data. Furthermore, the video coder may shift a horizontal component of the first available disparity motion vector to derive a shifted disparity motion vector candidate (DSMV). The video coder may add the DSMV into a merge candidate list.

Abstract: A moving picture coding method for coding a current block derives a first candidate having a first motion vector predictor derived from a first motion vector that has been used to code a first block. It is determined whether a total number of one or more candidates having the first candidate is less than a maximum candidate number, and a second candidate having a second motion vector predictor is derived when the total number of the one or more candidates having the first candidate is less than the maximum candidate number. The second motion vector predictor is a zero vector. A candidate for coding the current block is selected out of the plurality of candidates having the first candidate and the second candidate.

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: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.

Abstract: A moving picture coding apparatus for performing inter-picture predictive coding for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information.

Abstract: Several improvements for use with Bidirectionally Predictive (B) pictures within a video sequence are provided. In certain improvements Direct Mode encoding and/or Motion Vector Prediction are enhanced using spatial prediction techniques. In other improvements Motion Vector prediction includes temporal distance and subblock information, for example, for more accurate prediction. Such improvements and other presented herein significantly improve the performance of any applicable video coding system/logic.

Abstract: There is disclosed a method, device and computer-readable storage medium for decoding video data. The method includes: obtaining a reference sample array of a video block; obtaining a sum of the reference sample array; calculating a threshold by performing arithmetic right shift to the sum, a shift value of the arithmetic right shift being determined according to size information of the video block; and determining the binary partition pattern by comparing the reference sample array with the threshold.

Abstract: Example embodiments are directed toward a method of decoding a multi-view video signal using a video decoding apparatus including using a global motion vector of a non-anchor current picture in a current view to determine a corresponding block. A reference block in the current view is then determined using motion information of the current block that is generated from motion information of the corresponding block. A pixel value of the current block is predicted using the reference block in order to raise efficiency in signal processing of the multi-view video signal.

Abstract: A system includes an encoder and a decoder. The encoder selects a first matched template for un-encoded pixels of a video frame using an algorithm for measuring a similarity between image blocks of the video frame, the algorithm being based on a weighted scheme of reconstructed adjacent pixels, generates at least one residual for the un-encoded pixels of the video frame based on the matched template, and encodes residuals as compressed bits using an asymmetric discrete sine transform (ADST). The decoder decodes the compressed video bits as residuals using the ADST, selects a second matched template using an algorithm for measuring a similarity between image blocks of a video frame associated with the compressed video bits, the algorithm being based on a weighted scheme of reconstructed adjacent pixels, and generates reconstructed pixels of the video frame based on the matched template and the decoded compressed video bits.

Abstract: The disclosure is disclosed an apparatus of processing an image and a method thereof. According to the present invention, the method of transmitting a broadcast signal for 3-dimensional, 3D, service, may include encoding video data for a 3D service into a stream, generating first service information including a first descriptor including first information for specifying that a type of the stream is a video stream and second information for specifying a type of a component included in the video stream is a 3D video component and transmitting a broadcast signal including the encoded stream and the generated service information.

Abstract: Embodiments of systems and methods for signaling chroma information for a picture in a compressed video stream are provided.

Abstract: The present invention provides a picture coding apparatus which can reduce a load in decoding. When a RAU to be coded is an open GOP type RAU, the present invention includes: a motion estimation unit, a motion compensation unit, and the like which codes a picture to be coded to generate a BI-picture; a BI information generation unit which generates a RAU map indicating whether or not the BI-picture is positioned in a display order immediately before a starting I-picture in the RAU of the stream; and a variable length coding unit which writes the RAU map into the RAU of the stream.

Abstract: A moving picture coding apparatus for performing inter-picture predictive coding for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information.

Abstract: An intra-frame decoding method is provided. The method includes: obtaining, from a video code stream, prediction mode information of a first signal component of a current block; determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

Abstract: An image coding method for coding a current block derives a first candidate having a first motion vector that has been used to code a first block. It is determined whether a total number of one or more candidates having the first candidate is less than a maximum candidate number, and a second candidate is derived when the total number of the one or more candidates is less than the maximum candidate number. The second candidate has a second motion vector and is different from the first candidate. A candidate for coding the current block is selected from the candidates having the first candidate and the second candidate.

Abstract: Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.

Abstract: Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.

Abstract: A video decoding apparatus using an inter-prediction is disclosed. The apparatus includes at least: a decoder configured to reconstruct a flag and quantized transform coefficients by decoding a bitstream, the flag indicating one among a plurality of modes for determining the motion vector of the current block; a predictor configured to determine a motion vector of a current block to be decoded in a current picture, and predict pixels in current block using the motion vector of the current block; an inverse quantizer and inverse transformer configured to inversely quantize and then inversely transform the quantized transform coefficients to thereby reconstruct residual signals; and an adder configured to add the predicted pixels to the reconstructed residual signals which correspond to the predicted pixels.

Abstract: Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.

Abstract: The subject matter herein generally relates to transcoding content, typically audio/video files though not limited to such, from one version to another in preparation for online streaming or other delivery to end users. Such transcoding may involve converting from one format to another (e.g., changing codecs or container formats), or creating multiple versions of an original source file in different bitrates, frame-sizes, or otherwise. A transcoding platform is described herein that, in certain embodiments, leverages distributed computing techniques to transcode content in parallel across a platform of machines that are preferably idle or low-utilization resources of a content delivery network. The transcoding system also utilizes, in certain embodiments, improved techniques for segmenting the original source file so as to enable different segments to be sent to different machines for parallel transcodes.

Abstract: A method is provided. The method includes: determining one or more first candidate reference blocks that correspond to a current block in a first reference frame according to known motion information related to the current block; determining one or more second candidate reference blocks in a second reference frame; calculating a sum of differences between pixels of each of the one or more first candidate reference blocks and pixels of a second candidate reference block that is of the one or more second candidate reference blocks and that corresponds to the first candidate reference block; selecting a first candidate reference block and a second candidate reference block with a minimum sum of differences as a first reference block and a second reference block of the current block; and obtaining motion information of the current block according to motion information determined by the first reference block and the second reference block.

Abstract: Provided is a method that generates a prediction block of a current prediction unit, and generates a residual block of the current prediction unit. To generate the prediction block, a reference picture index and motion vector difference of the current prediction unit are obtained from a received bit stream, spatial and temporal motion vector candidates are derived to construct a motion vector candidate list. A motion vector predictor is selected and a motion vector of the current prediction unit is restored to generate the prediction block. Therefore, the motion vector encoded effectively using spatial and temporal candidates is correctly recovered and the complexity of a decoder is reduced.

Abstract: A video decoding apparatus using an inter-prediction is disclosed. The apparatus includes at least: a decoder configured to reconstruct a flag and quantized transform coefficients by decoding a bitstream, the flag indicating one among a plurality of modes for determining the motion vector of the current block; a predictor configured to determine a motion vector of a current block to be decoded in a current picture, and predict pixels in current block using the motion vector of the current block; an inverse quantizer and inverse transformer configured to inversely quantize and then inversely transform the quantized transform coefficients to thereby reconstruct residual signals; and an adder configured to add the predicted pixels to the reconstructed residual signals which correspond to the predicted pixels.

Abstract: According to one embodiment, an encoding apparatus includes a prediction unit, a classifying unit, a first transformer, a second transformer, an order controller, and an entropy coder. The prediction unit obtains a predictive residual signal to be encoded, by using a mode selected from intra-prediction modes. The first transformer obtains first transformation coefficients by subjecting the signal to an orthogonal transformation by use of a first transformation basis if the selected mode is classified into a mode having a prediction direction. The first transformation basis is preset so that a coefficient density after the orthogonal transformation is higher than a coefficient density.

Abstract: Various methods, systems, and apparatuses can be used to perform burst efficient fast program acquisition. In some implementations, a burst efficient fast program acquisition system can operate to remove unused B-frame thereby reducing the bandwidth required for a fast burst. In other implementations, the burst efficient fast program acquisition system can decode the fast burst, identify the video frames needed for reassembly, and encode a truncated group of frames for fast burst transmission. A burst efficient fast program acquisition system can also use pre-calculated streamlined burst fast burst in conjunction with program prediction methods such as adjacent program and frequently viewed program thereby further reducing the latency associated with IPTV program acquisitions.

Abstract: A method and apparatus for performing object-based intra-prediction encoding and decoding is disclosed. Implementations of object-based intra-prediction encoding and decoding include segmenting a current block into a first portion and at least a second portion; generating, for at least some of a plurality of pixels in the first portion, corresponding predicted values according to at least a first intra-prediction mode; generating, for at least some of a plurality of pixels in the second portion, corresponding predicted values according to at least a second intra-prediction mode; and encoding the current block using the predicted values of the first portion and the predicted values of the second portion.

Abstract: A video system includes an encoder for generating a compressed bit stream in response to a received video signal. The encoder includes a mode decision processor that is arranged to determine whether the mode of a first pixel block in a first row is an “intra-mode” or an “inter-mode.” The encoder also includes a mode estimation processor that is arranged to estimate the mode of a left pixel block in a second row that is received after the first row in response to the determined mode of the first pixel block in the first row. The encoder also includes a pixel block processor that is arranged to process a pixel block in the second row that is to the right of the left pixel block in response to the estimated mode of the left pixel block.

Abstract: An example method to perform rate control in a parallel encoding system including a plurality of parallel encoders is disclosed. The method may comprise determining a quantization parameter for one of the plurality of parallel encoders based on a measure of parallelism of the plurality of parallel encoders. The method may further comprise providing the quantization parameter to the one of the plurality of parallel encoders to encode a chunk of a video sequence to generate an encoded chunk based on the quantization parameter.

Abstract: Techniques for low-delay buffering in a video coding process are disclosed. Video decoding techniques may include receiving a first decoded picture buffer (DPB) output delay and a second DPB output delay for a decoded picture, determining, for the decoded picture, a first DPB output time using the first DPB output delay in the case a hypothetical reference decoder (HRD) setting for a video decoder indicates operation at a picture level, and determining, for the decoded picture, a second DPB output time using the second DPB output delay in the case that the HRD setting for the video decoder indicates operation at a sub-picture level.

Abstract: A video decoding method using an inter-prediction is disclosed. The method includes at least: determining a motion vector of a current block to be decoded in a current picture; predicting pixels in current block using the motion vector of the current block; extracting quantized transform coefficients by decoding a bitstream; reconstructing residual signals by inversely quantizing and then inversely transform the quantized transform coefficients; and adding the predicted pixels and the reconstructed residual signals which correspond to the predicted pixels, wherein the determination of the motion vector of the current block comprises: obtaining a flag by decoding a bitstream, the flag indicating one among a plurality of modes for determining the motion vector of the current block.

Abstract: Methods and apparatus are provided for adaptive transform selection for video encoding and decoding. An apparatus includes a video encoder for encoding at least a block in a picture using a transform. The transform used to encode the block is selected from a plurality of transforms. The plurality of transforms is adaptively updated during the encoding of the picture.

Abstract: A video decoding method and apparatus and a video encoding method and apparatus based on a scanning order of hierarchical data units are provided. The decoding method includes: receiving and parsing a bitstream of an encoded video; extracting from the bitstream information about a size of a maximum coding unit for decoding a picture of the encoded video, and encoding information about a coded depth and an encoding mode for coding units of the picture, wherein the size of the maximum coding unit is a maximum size of a coding unit which is a data unit for decoding the picture; and determining a hierarchical structure of the maximum coding unit and the coding units into which the picture is divided according to depths, and decoding the picture based on the coding units, by using the information about the size of the maximum coding unit and the encoding information about the coded depth and the encoded mode.

Abstract: A moving picture coding apparatus for performing inter-picture predictive coding for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information.

Abstract: The present invention is directed to an image information decoding apparatus adapted for performing intra-image decoding based on resolution of color components and color space of an input image signal. An intra prediction unit serves to adaptively change block size in generating a prediction image based on a chroma format signal indicating whether resolution of color components is one of 4:2:0 format, 4:2:2 format, and 4:4:4 format, and a color space signal indicating whether color space is one of YCbCr, RGB, and XYZ. An inverse orthogonal transform unit and an inverse quantization unit serve to also change orthogonal transform technique and quantization technique in accordance with the chroma format signal and the color space signal. A decoding unit decodes the chroma format signal and the color space signal to generate a prediction image corresponding to the chroma format signal and the color space signal.

Abstract: A moving picture coding apparatus for performing inter-picture predictive coding for pictures constituting a moving picture is provided with a coding unit for performing predictive error coding for image data; a decoding unit for performing predictive error decoding for an output from the coding unit; a reference picture memory for holding output data from the decoding unit; and a motion vector detection unit for detecting motion vectors on the basis of the decoded image data stored in the memory. When coding a B picture as a target picture, information indicating whether or not the target picture should be used as a reference picture when coding another picture is added as header information. Therefore, in a decoding apparatus for decoding a bit stream Bs outputted from the moving picture coding apparatus, management of a memory for holding the reference picture can be facilitated on the basis of the header information.

Abstract: A video decoding method and apparatus and a video encoding method and apparatus based on a scanning order of hierarchical data units are provided. The decoding method includes: receiving and parsing a bitstream of an encoded video; extracting from the bitstream information about a size of a maximum coding unit for decoding a picture of the encoded video, and encoding information about a coded depth and an encoding mode for coding units of the picture, wherein the size of the maximum coding unit is a maximum size of a coding unit which is a data unit for decoding the picture; and determining a hierarchical structure of the maximum coding unit and the coding units into which the picture is divided according to depths, and decoding the picture based on the coding units, by using the information about the size of the maximum coding unit and the encoding information about the coded depth and the encoded mode.

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) are disclosed. The MVP is selected from spatial MVP and temporal MVP candidates. The method uses a flag to indicate whether temporal MVP candidates are disabled. If the flag indicates that the temporal MVP candidates are disabled, the MVP is derived from the spatial MVP candidates only. Otherwise, the MVP is derived from the spatial and temporal MVP candidates. The method may further skip spatial redundant MVP removal by comparing MV values. Furthermore, the parsing error robustness scheme determines a forced temporal MVP when a temporal MVP is not available and the temporal MVP candidates are allowed as indicated by the flag. The flag may be incorporated in sequence, picture, slice level, or a combination of these levels.

Abstract: Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.

Abstract: According to one embodiment, an encoding apparatus includes a prediction unit, a classifying unit, a first transformer, a second transformer, an order controller, and an entropy coder. The prediction unit obtains a predictive residual signal to be encoded, by using a mode selected from intra-prediction modes. The first transformer obtains first transformation coefficients by subjecting the signal to an orthogonal transformation by use of a first transformation basis if the selected mode is classified into a mode having a prediction direction. The first transformation basis is preset so that a coefficient density after the orthogonal transformation is higher than a coefficient density.

Abstract: A video encoding apparatus includes: a reference vector deriving unit to derive as a reference vector a vector used when encoding a block that is near a block to be encoded and is included in a region where a field picture to be encoded is subjected to encode; a scaling unit to scale the reference vector based on a temporal distance between the field picture and a first encoded field picture specified by the reference vector and a temporal distance between the field picture and a second encoded field picture specified by a reference index and referenced by the block to be encoded in the field picture to generate a motion prediction vector; and a motion prediction vector correction unit to correct the motion prediction vector using a parity of the field picture, a parity of the first encoded field picture, and a parity of the second encoded field picture.