Abstract: An image decoding method performed by a decoding device according to the present invention comprises the steps of: acquiring information on inter prediction of a target block through a bit stream; deriving motion information of the target block on the basis of the information on inter prediction; deriving a prediction sample by performing inter prediction for the target block on the basis of the motion information; generating a reconstruction block on the basis of the prediction sample; deriving modified motion information of the target block on the basis of the reconstruction block; and updating the motion information of the target block on the basis of the modified motion information. According to the present invention, modified motion information of the target block can be calculated, and the motion information of the target block can be updated on the basis of the modified motion information, so that the overall coding efficiency can be improved.

Abstract: Systems and methods are described herein for processing video. An encoder implementing the systems and methods described herein may receive video data comprising a plurality of frames and may partition each frame of the plurality of frames into a plurality of coding units. The encoder may then partition a coding unit into two or more prediction units. The encoder may determine, based on one or more coding parameters, a target bit rate, and characteristics of a human visual system (HVS), a coding mode for each of the two or more prediction units to minimize distortion in the encoded bitstream. The encoder may then determine a residual signal comprising a difference between each of the two or more prediction units and each of one or more corresponding prediction areas in a previously encoded frame and then generate an encoded bitstream comprising the residual signal.

Abstract: Provided are a video decoding method and apparatus and a video encoding method and apparatus which determine whether to use a Most Probable Mode (MPM) list, based on encoding information of a current block, obtain, from a bitstream, intra prediction mode index information indicating one of candidate intra prediction modes included in the MPM list, and determine an intra prediction mode of the current block by using the obtained intra prediction mode index information.

Abstract: The present invention provides apparatus, systems, and methods for A stereoscopic display system including an array of Light Emitting Diodes (LEDs) is provided. The system includes a plurality of left LEDs, each left LED comprising a left housing, a left light transmitter arrangement within the left housing, and a left polarizing element positioned with the left housing above the left light transmitter arrangement and a plurality of right LEDs, each right LED comprising a right housing, a right light transmitter arrangement within the right housing, and a right polarizing element positioned with the right housing and above the right light transmitter arrangement. At least one left housing and left polarizing element pair are each irregularly formed and fit together, and at least one right housing and right polarizing element are each irregularly formed in a manner complementary to the at least one left housing and left polarizing element.

Abstract: A video coding device and method are provided to perform video coding by receiving a value indicating a maximum allowed partitioning depth; updating the maximum allowed partitioning depth based on one or more inference rules; determining a partitioning for a coded video block based on the maximum allowed partitioning depth; and reconstructing the video data based on the determined partitioning for the coded video block.

Abstract: A security system can use video analytics and/or other input parameters to identify a theft event. Optionally, the security system can take remedial action in response. For example, the security system can use video analytics to determine that a person has reached into a shelf multiple times at a rate above a threshold, which can indicate that a thief is quickly removing items from the shelf. The security system can also use video analytics to determine that a person has reached into a shelf via a sweeping action, which can indicate that a thief is gathering and removing a large quantity of items from the shelf in one motion. In response, the security system can alert security personnel, cause a speaker to output an audible message in the target area, flag portions of the video relating to the theft event, activate or ready other sensors or systems, and/or the like.

Abstract: Aspects of the subject disclosure may include, for example, obtaining image content over a communication network, determining a predicted viewpoint of a user associated with the image content, and adjusting the image content to equirectangular image content according to the predicted viewpoint. Further aspects can include downscaling the equirectangular image content according to a display capability of a mobile device resulting in a downscaled equirectangular image content, cropping the downscaled equirectangular image content resulting in a cropped equirectangular image content, and providing, over the communication network, the cropped equirectangular image content to the mobile device. Other embodiments are disclosed.

Abstract: A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.

Abstract: Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. In a method, prediction information of a current block of a coding unit tree in a coded bit stream is decoded. The prediction information indicates at least one allowed block partitioning structure for the current block. A sub-block transform (SBT) mode is determined for the current block based on the prediction information indicating that SBT is used for the current block. A partition of the current block based on the SBT mode is different from a partition of the current block based on the at least one allowed block partitioning structure. The current block is reconstructed based on the SBT mode.

Abstract: This disclosure describes gradient-based prediction refinement. A video coder (e.g., video encoder or video decoder) determines one or more prediction blocks for inter-predicting a current block (e.g., based on one or more motion vectors for the current block). In gradient-based prediction refinement, the video coder modifies one or more samples of the prediction block based on various factors such as displacement in a horizontal direction, the horizontal gradient, a displacement in the vertical direction, and a vertical gradient. This disclosure provides for gradient-based prediction refinement where a precision level of the displacement (e.g., at least one of the horizontal or vertical displacement) is unified (e.g., the same) for different prediction modes (e.g., including an affine mode and a bi-directional optical flow (BDOF) mode).

Abstract: Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. In a method, prediction information of a current block of a current picture in a coded bitstream is decoded. The prediction information indicates a geometric partitioning mode (GPM) for the current block. The current block is partitioned into two partitions in the GPM mode. Each of the partitions is associated with a respective predictor. A weighting index for a sample of the current block is determined based on a position of the sample. A weighting factor is calculated based on the weighting index of the sample according to an equation that converts the weighting index to the weighting factor. The sample is reconstructed based on the weighting factor and the predictor corresponding to the sample.

Abstract: A padding processing section replaces, by using an input image which is a two-dimensional image in which plural fisheye images configuring a predetermined azimuth range are provided side by side, an image to be used in a prediction process outside a valid region of a fisheye image with an image at a corresponding position in a valid region of another fisheye image based on continuity of the plural fisheye images to reduce prediction errors. The padding processing section calculates the position in the valid region of the other fisheye image corresponding to the position outside the valid region based on fisheye image information indicative, for each fisheye image, of a center position, a fisheye radius, or a state of reversal or rotation of the fisheye image in the two-dimensional image. A reversible encoding section includes the fisheye image information into an encoded stream of the two-dimensional image.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry receives coded information of a current coding tree unit (CTU) from a coded video bitstream, and determines a context model for a split flag associated with a current block within the current CTU at least partially based on split information of a corresponding block in a reference CTU for the current CTU. Then, the processing circuitry determines the split flag based on the context model, and decodes the current block based on the split flag that is determined based on the context model.

Abstract: Pointers are added to a 3D volumetric dataset to help the user visualize the direction of blood flow. A 3D volume containing at least one blood vessel is created. Next, the direction of the blood flow is determined. Next, at least pointer is placed into the 3D volume in an aligned fashion with the direction of blood flow such that the 3D volume is modified. Next, the modified 3D volume is displayed on a head display unit, such as an augmented reality or virtual reality display. Next, at least one pointer is advanced to a new position for additional modification of the 3D imaging volume.

Abstract: A stereoscopic display system including an array of Light Emitting Diodes (LEDs) is provided. The system includes a plurality of left LEDs, each left LED comprising a left housing, a left light transmitter arrangement within the left housing, and a left polarizing element positioned with the left housing above the left light transmitter arrangement and a plurality of right LEDs, each right LED comprising a right housing, a right light transmitter arrangement within the right housing, and a right polarizing element positioned with the right housing and above the right light transmitter arrangement. At least one left housing and left polarizing element pair are each irregularly formed and fit together, and at least one right housing and right polarizing element are each irregularly formed in a manner complementary to the at least one left housing and left polarizing element.

Abstract: A 3D virtual hand is generated and is geo-registered to a tangible object. When the tangible object changes in position, so too does the 3D virtual hand. When the tangible object changes in orientation, so too does the 3D virtual hand. The 3D virtual hand is displayed on an extended reality head display unit. Applications include, but are not limited to, teaching music lessons.

Abstract: Techniques for video processing are described. One example method includes determining an indication that indicates a maximum number of candidates allowed in a candidate list for at least one video block in a video, the maximum number of candidates allowed in the candidate list corresponding to at least one of a maximum number of candidates in a geometry partition mode (GEO) based merge candidate list, a maximum number of base candidates in a merge with motion vector difference (MMVD) merge candidate list, a maximum number of base candidates in a sub-block based MMVD merge candidate list, and a maximum number of candidates in a geometry partition mode based affine merge candidate list; and performing video processing on the at least one video block based on the indication.

Abstract: An encoding/decoding device according to the present invention derives a residual coefficient of a residual block from a bitstream, calculates a quantization parameter for the residual block, performs inverse quantization on the residual coefficient by using the quantization parameter, and performs inverse conversion on the inversely quantized residual coefficient, thereby enabling restoration of a residual sample of the residual block.

Abstract: A method of decoding a bitstream by an electronic device is provided. An image frame of the bitstream is received, and a block unit having a block width and a block height is determined from the received image frame. The electronic device determines whether a geometric partitioning mode is disabled for the block unit based on a comparison between the block width and the block height. The block unit is divided to generate a plurality of sub-blocks predicted by different merge candidates of the block unit when the geometric partitioning mode is applied on the block unit. The predicted block is generated by predicting block unit based on a prediction mode different from the geometric partitioning mode when the geometric partitioning mode is disabled for the block unit. The block unit is reconstructed based on the predicted block.

Abstract: Pointers are added to a 3D volumetric dataset to help the user visualize the direction of blood flow. A 3D volume containing at least one blood vessel is created. Next, the direction of the blood flow is determined. Next, at least pointer is placed into the 3D volume in an aligned fashion with the direction of blood flow such that the 3D volume is modified. Next, the modified 3D volume is displayed on a head display unit, such as an augmented reality or virtual reality display. Next, at least one pointer is advanced to a new position for additional modification of the 3D imaging volume.