Abstract: This disclosure various schemes for intra mode coding and decoding of video. For example, a method for preforming intra prediction for a current block of a coded video stream is disclosed.

Abstract: A method of and device for controlling multi-line intra prediction using a non-zero reference line. The method includes determining whether an intra prediction mode of a first neighboring block of a current block is an angular mode, determining whether an intra prediction mode of a second neighboring block of the current block is an angular mode, and generating a Most Probable Mode (MPM) list of the current block.

Abstract: There is includes a method and apparatus comprising computer code configured to cause a hardware processor or processors to perform obtaining a block of video data, splitting the block into an L-shaped partition and a second partition, the second partition being one of a rectangular shaped partition and another L-shaped partition, and performing intra prediction of the L-shaped partition by using a reference sample chain, comprising a chain of neighboring reconstructed samples, as reference samples.

Abstract: A method of loop filtering in a video coding process comprises receiving image data; analyzing the image data; flexibility partitioning the image data into loop filtering blocks (LFBs) to allow the size of LFBs in at least one of a first row and a first column in a same frame to be smaller than other LFBs within the same frame; and applying a loop filter to the LFBs.

Abstract: Aspects of the disclosure provide method and apparatus for video coding. In some examples, an apparatus includes processing circuitry. The processing circuitry decodes prediction information of a first block from a coded video bitstream. The prediction information for the first block is indicative of a first intra prediction mode in a first set of intra prediction modes when the first block is a square block. The processing circuitry determines, based on the first intra prediction mode, a second intra prediction mode in a second set of intra prediction modes when the first block is a non-square block. The second set of intra prediction modes includes at least the second intra prediction mode that is not in the first set of intra prediction modes. Further, the processing circuitry reconstructs at least one sample of the first block according to the second intra prediction mode.

Abstract: A method for video encoding includes determining a filter shape of a cross-component filter applied to a chroma coding block (CB), generating a first intermediate CB by applying a loop filter to the chroma CB, and generating a second intermediate CB by applying, to a corresponding luma CB, the cross-component filter applied to the chroma CB and having the determined filter shape. The method further includes determining a filtered chroma CB based on the first intermediate CB and the second intermediate CB by combining the loop filtered chroma CB with the cross-component filtered luma CB, and generating coded information of the chroma CB in a coded video bitstream. Determining the filter shape includes determining the filter shape of the cross-component filter based on the number of the filter coefficients and based on at least one of (i) the chroma subsampling format or (ii) the chroma sample type.

Abstract: Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. In a method, a current block is determined to be a parent node of a local partition tree structure. A tree depth of the local partition tree structure is less than or equal to a threshold. Then the current block is partitioned according to the local partition tree structure. The current block is reconstructed based on a prediction mode of the current block. In another method, chroma samples of the current block are partitioned into sub-blocks. The chroma samples of one sub-block are predicted based on a subset of chroma intra prediction modes including planar, DC, horizontal, vertical, DM, L_CCLM, T_CCLM, and LT_CCLM. Then the current block is reconstructed based on the predicted chroma samples.

Abstract: A method for controlling block intra prediction is provided for a decoder. The method includes: obtaining a coded video bitstream; decoding, prediction information of a current coding unit (CU) in a segment of a current picture from the coded video bitstream; determining, according to the prediction information, a prediction type of a chroma coding block (CB) of the current CU, the prediction type being intra prediction or inter prediction; and reconstructing the chroma CB according to the prediction information, where a width of any reconstructed chroma CB intra-predicted from the coded video bitstream is greater than 2.

Abstract: An adaptive fluid switch for regulating the production rate of a fluid. The adaptive fluid switch includes a fluid control valve having a fluid selector, a swirl chamber and a self-impinging valve element. When the fluid produced through the adaptive fluid switch has a viscosity greater than a first predetermined level, the fluid selector determines the fluid to be a selected fluid such that the fluid swirls in one direction in the swirl chamber and follows a low resistance flow path in the valve element. When the fluid has a viscosity less than a second predetermined level, the fluid selector determines the fluid to be a non-selected fluid such that the fluid swirls in the opposite direction in the swirl chamber and follows a high resistance flow path in the valve element, thereby regulating the production rate of the fluid responsive to changes in the viscosity of the fluid.

Abstract: A method, system, and non-transitory computer readable medium is provided for decoding video data. Video data comprising a chroma component having a first nominal angle and first delta angles and a luma component having a second nominal angle and second delta angles is received, wherein the first delta angles are dependent on the second delta angles. The first delta angle values corresponding to the first delta angles are parsed or derived based at least on second delta values corresponding to the second delta angles, wherein the first delta angle values are derived from one or more nominal angles associated with one or more sample positions corresponding to one or more luma blocks. A prediction mode associated with the chroma component based on a nominal mode of a corresponding luma block is entropy-coded. The video data is decoded based on the first delta angle values corresponding to the first delta angles.

Abstract: A method of video decoding includes retrieving, from a coded video bitstream for a current block encoded in an intra prediction mode, a reference line index indicating a reference line from a plurality of reference lines that include a zero reference line. The method includes determining whether the current block is encoded in a non-angular intra prediction mode. The method includes, in response to the block being encoded in the non-angular intra prediction mode, determining whether the reference line index indicates a non-zero reference line from the plurality of reference lines. The method includes in response to determining that the reference line index is the non-zero reference line, (i) enabling non-angular intra prediction modes for the non-zero reference line, and (ii) decoding the current block with at least one reference sample from the non-zero reference line.

Abstract: A method, computer program, and computer system is provided for encoding or decoding video data. Video data including a chroma component and a luma component is received. A first coding tree structure associated with the luma component and a second coding tree structure associated with the chroma component are determined, wherein the first coding tree structure and the second coding tree structure share a same top level coding tree structure. The video data is decoded based on the first coding tree structure and the second coding tree structure.

Abstract: A sample three-dimensional image is acquired. The sample three-dimensional image is labeled with actual location information of an actual region of a three-dimensional target. One or more pieces of prediction region information corresponding to one or more sub-images of the sample three-dimensional image are acquired by performing target detection on the sample three-dimensional image using the three-dimensional target detection model. Each piece of the prediction region information includes prediction confidence and prediction location information of a prediction region. A loss value of the three-dimensional target detection model is determined using the actual location information and the one or more pieces of the prediction region information. A parameter of the three-dimensional target detection model is adjusted using the loss value.

Abstract: Thermal field controlled electrical conductivity change devices and applications therefore are provided. In some embodiments, a thermal switch, comprises: a metal-insulator-transition (MIT) material; first and second terminals electrically coupled to the MIT material; and a heater disposed near the MIT material.

Abstract: This disclosure relates to a harmonized design among multiple reference line intra prediction, transform partitioning, and transform kernelsor processing video information. One example method is disclosed. The method includes retrieving a data block of a video frame, the data block having an adjacent reference line and one or more non-adjacent reference lines in the video frame; determining whether one of the one or more non-adjacent reference lines is to be used for intra prediction of the data block. When an adjacent reference line is used for the intra prediction of the data block, selecting a target transform kernel from a first set of transform kernels to transform the data block; and when a non-adjacent reference line is used for the intra prediction of the data block, selecting the target transform kernel from a second set of transform kernels to transform the data block.

Abstract: A method, a non-transitory computer readable medium, and a computer system is provided for encoding or decoding video data. The method may include: receiving video data comprising a chroma component and a luma component; parsing, deriving or selecting a number of presets for the chroma component in one frame, and a number of presets for the luma component in the one frame; and decoding the video data. The method may further comprise: performing a separate Constrained Directional Enhancement Filter (CDEF) process of filtering luma and chroma components independent from each other based on the number of presets for the chroma component in one frame, and the number of presets for the luma component in the one frame.

Abstract: Methods, apparatus, and computer readable storage medium for multiple reference line intra prediction in video decoding. The method includes receiving, by a device, a coded video bitstream for a current block. The device includes a memory storing instructions and a processor in communication with the memory. The method also includes extracting, by the device, a parameter from the coded video bitstream, the parameter indicating a reference line for intra predication in the current block; partitioning, by the device, the current block to obtain a plurality of sub-blocks; and in response to a sub-block in the plurality of sub-blocks being located at a boundary of the current block, using, by the device, a top adjacent reference line as values for all top non-adjacent reference lines for the sub-block.

Abstract: A method and apparatus for partitioning a block to permit the encoding or decoding of a video sequence includes partitioning the block using a split-to-square partition pattern, a horizontal binary tree partition pattern, or a horizontal ternary tree partition pattern to generate a set of sub-blocks, wherein a same priority is allocated to the split-to-square partition pattern, the horizontal binary tree partition pattern, and the horizontal ternary tree partition pattern such that the split-to-square partition pattern may be used before, after, or interleaved with the horizontal binary tree partition pattern and the horizontal ternary tree partition pattern. Encoding or decoding the video sequence is performed based on partitioning the block using the split-to-square partition pattern, the horizontal binary tree partition pattern, or the horizontal ternary tree partition pattern.

Abstract: A method of and an apparatus for controlling intra prediction for decoding of a video sequence are provided. The method may include based on a reference line index signaling a first reference line nearest to a coding unit, among a plurality of reference lines adjacent to the coding unit, applying intra smoothing on one or more first reference lines comprising the first reference line, among the plurality of reference lines, and based on the intra smoothing being applied on the one or more first reference lines, applying a position-dependent intra prediction combination (PDPC) on one or more third reference lines comprising the first reference line, among the plurality of reference lines, while preventing application of the PDPC on one or more fourth reference lines other than the one or more third reference lines, among the plurality of reference lines.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. An apparatus for video decoding includes processing circuitry that decodes prediction information for a current block in a current picture that is a part of a coded video sequence. The prediction information indicates a specific inter prediction mode, a position dependent prediction combination (PDPC) process, and a coded residual for the current block. The processing circuitry determines at least one of (i) a partition of the current block to which a transform process is to be applied and (ii) a transform type of the transform process for the current block based on the prediction information. The processing circuitry performs the transform process on the coded residual to generate a decoded residual. The processing circuitry reconstructs the current block based on the decoded residual.