Abstract: Methods and apparatuses for processing (e.g., decoding) a current block within a current picture. The processing may include decoding partial motion vector difference (MVD) information from a coded video bitstream. The processing may include determining first and second motion vector predictors (MVPs). The processing may include determining complete MVD information using the partial MVD information and one or more of the first and second MVPs. Determining the complete MVD information may include using the partial MVD information to generate a set of MVD hypothesis pairs, and each of the MVD hypothesis pairs may include a possible first MVD and a possible second MVD. The processing may include determining first and second final prediction blocks of the current block using the complete MVD information and the first and second MVPs.

Abstract: A method and apparatus for decoding and outputting one or more pictures from a bitstream is provided. The method includes obtaining an indication that specifies that the decoder should not output pictures belonging to a temporal layer. The method includes decoding at least one picture from a bitstream wherein picture(s) belong to the temporal layer. The method includes decoding at least one picture from a bitstream wherein picture(s) belong to one temporal layer not equal to. The method includes responsive to receiving the indication, suppressing output of the at least one picture. The method includes outputting the at least one picture.

Abstract: A method, decoder, and apparatus are provided. Responsive to a current block being a MIP predicted block, it is determined whether it has one or multiple transform blocks. A MIP weight matrix to be used to decode the current block is determined based on a MIP prediction mode. Responsive to the MIP predicted block having one transform block, the MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream. Responsive to the MIP predicted block having multiple transform blocks: deriving a first MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream and remaining MIP predicted blocks are derived based further on decoded elements in at least one decoded transform block of the current block. The MIP predicted block(s) are output for subsequent processing.

Abstract: A method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.

Abstract: There is provided a method. The method comprises obtaining a weighting factor. The method comprises obtaining input sample values. The method further comprises determining neural network, NN, filtered sample values by providing the input sample values to a neural network. The method comprises determining revised sample values based on (i) the weighting factor and (ii) the NN filtered sample values.

Abstract: A method and decoder for determining that a decoder conforming to a first profile is capable of decoding a first picture of a video bitstream conforming to a second profile is provided. The method includes obtaining an indicator value, the indicator value indicating conformance to a profile. The method includes determining whether the first picture in the video bitstream is a still picture. The method includes responsive to the indicator value indicating conformance to the second profile and the first picture is determined to be a still picture, determining that the decoder conforming to the first profile is capable of decoding the first picture of the video bitstream.

Abstract: Methods and apparatuses for applying a deblocking to a coding unit in video pictures a provided. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.

Abstract: A method for encoding or decoding an image. The method includes obtaining a CTB having a vertical size (CtbSizeY) and a horizontal size (CtbSizex), the CTB comprising set of sample values comprising a current sample value having a location (x,y) within the CTB. The method also includes selecting a filter strength value for the current sample based on y and filtering the current sample using the selected filter strength value. Selecting a filter strength value for the current sample based on y comprises: i) determining whether the following first condition is true: (y==(CtbSizeY-5) OR y==(CtbSizeY-4)) AND var==1, where var is set equal to 1 as a result of a determination that a second condition is satisfied; and ii) choosing a filter strength value of 10 as a result of determining the first condition is true.

Abstract: A method for encoding or decoding an image is provided. The method comprises obtaining pixel values of pixels included in the image. The method further comprises converting the pixel values into convoluted values using a convolution network that comprises a first convolution layer, wherein the first convolution layer is configured to receive first input values and generate first output values using a convolution operation. The method further comprises obtaining first quality values, and (i) combining the first quality values with the pixel values, thereby generating the first input values or (ii) combining the first quality values with the first output values, thereby generating first combined values.

Abstract: Methods, decoders, and programs are provided. All blocks of an image that has been encoded are decoded. At least one sample of at least one block of the image is filtered by, for each block being filtered: for each sample being filtered: selecting a plurality of neighboring samples. For at least one neighboring sample, a difference is calculated between the neighboring sample and the sample. A modifier value is obtained. A modifier sum is derived based on a sum of the modifier values for the neighboring samples. A correction value is determined based on a conditional addition of at least one shifted version of the modifier sum, each shift having a same number of shift steps in each correction value determination. A filtered sample is derived based on the sample and correction value. The filtered sample is stored. The block and filtered sample is output towards a decoder output.

Abstract: There is provided a method for encoding or decoding an image. The method comprises obtaining a first luma sample value, L1, associated with the image. The method comprises obtaining a second luma sample value, L2, associated with the image. The method further comprises obtaining a first luma delta value, ?L1, wherein ?L1=L2?L1. The method comprises obtaining a first product, P1, using ?L1 and a first coefficient value, C1, wherein P1=(C1)(?L1). The method comprises calculating a first residual correction value, ?I1 using P1 and a set of other products. The method comprises filtering an unfiltered chroma value, RC, associated with the image using the first residual correction value, ?I1, thereby producing a filtered chroma value RFC associated with the image.

Abstract: A method and apparatus for decoding and outputting one or more pictures from a bitstream is provided. The method includes obtaining an indication that specifies that the decoder should not output pictures belonging to a temporal layer. The method includes decoding at least one picture from a bitstream wherein picture(s) belong to the temporal layer. The method includes decoding at least one picture from a bitstream wherein picture(s) belong to one temporal layer not equal to. The method includes responsive to receiving the indication, suppressing output of the at least one picture. The method includes outputting the at least one picture.

Abstract: In one aspect there is disclosed a method of applying deblocking on implicit vertical TU boundaries when the CU width is larger than the maximum TU width and applying deblocking on implicit horizontal TU boundaries when the CU height is larger than the maximum TU height. Some exemplary embodiments include HEVC deblocking and deblocking using longer filters.

Abstract: Methods, decoders, and programs are provided. All blocks of an image that has been encoded are decoded. At least one sample of at least one block of the image is filtered by, for each block being filtered: for each sample being filtered: selecting a plurality of neighboring samples. For at least one neighboring sample, a difference is calculated between the neighboring sample and the sample. A modifier value is obtained. A modifier sum is derived based on a sum of the modifier values for the neighboring samples. A correction value is determined based on a conditional addition of at least one shifted version of the modifier sum, each shift having a same number of shift steps in each correction value determination. A filtered sample is derived based on the sample and correction value. The filtered sample is stored. The block and filtered sample is output towards a decoder output.

Abstract: There is provided a method. The method comprises obtaining an input video frame data associated with an input video frame. The method comprises performing a deblocking filtering operation on one or more samples included in the input video frame, thereby generating one or more deblocked samples. The method further comprises performing a machine-learning (ML)-based filtering operation and/or adaptive loop filtering operation on one or more samples included in the input video frame, thereby generating one or more filtered samples. The method comprises, using said one or more deblocked samples and/or said one or more filtered samples, producing encoded or decoded video frame data including an encoded or decoded video frame.

Abstract: A method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.

Abstract: A method (400) for thinning a video comprising a sequence of pictures. The method includes the deciding whether or not to perform a video thinning process on a picture of the video. The method also includes performing a video thinning process on the picture of the video as a result of deciding to perform a video thinning process. The method also includes deciding whether or not to perform a video thinning process on another picture of the video. The method also includes, after deciding not to perform a video thinning process on the another picture, encoding the another picture to produce an encoded picture. The method further includes adding the encoded picture to a bitstream.

Abstract: There is provided a method for decoding a video frame. The method comprises receiving an encoded video frame sequence data associated with a video frame sequence, wherein the video frame sequence includes the video frame. The method comprises deriving from the received encoded video frame sequence data (i) sample value information of one or more blocks and/or (ii) block information about said one or more blocks. The method further comprises, based on (i) the derived sample value information and/or (ii) the derived block information, selecting from a set of machine learning, ML, models at least one ML model to use for decoding the video frame. The method comprises decoding the video frame using the selected at least one ML model.

Abstract: A method by a control system includes receiving at least one of an image, a video frame, or a point cloud frame. Responsive to detecting an object of a group of classes of a predefined group of classes in the at least one of the image, the video frame, or the point cloud frame, setting a target bit rate of an encoder to a specific value based on the object. Responsive to not detecting any object that belongs to any of the predefined group of classes in the at least one of the image, the video frame, or the point cloud frame, setting the target bit rate to one of a default bit rate and a current bit rate. The method includes sending an instruction to the encoder of a bit rate to use based on whether an object is detected.

Abstract: A method for decoding a picture from a bitstream. The method includes decoding a tile partition structure from one or more syntax elements in the bitstream. The method includes determining a number of tiles N in the picture. The method includes decoding a number of partitions in the picture, wherein each partition comprises an integer number of tiles. The method includes deriving a size and/or location for a current partition, wherein deriving the size and/or location for the current partition comprises: decoding one or more location syntax elements for the current partition from the bitstream, deriving a top-left position of the current partition as a location of a first tile in raster scan order that is not included in one or more previously derived partition, and deriving the size and/or the location of the current partition from a value of the one or more location syntax element together with a size and/or location of the one or more previously derived partition.