Abstract: The present application discloses a coding/decoding method and device, and a storage medium thereof, and belongs to the field of image processing technologies. The method includes: performing context-based adaptive binary arithmetic coding or context-based adaptive binary arithmetic decoding on first ISP indication information based on a context model in response to determining to code or decode the first ISP indication information, wherein the first ISP indication information is configured to indicate whether to enable an intra sub-block prediction mode; and performing bypass binary arithmetic coding or decoding on second ISP instruction information in response to determining to code or decode the second ISP indication information, wherein the second ISP indication information is configured to indicate a fashion of sub-block partition of the intra sub-block prediction mode.

Abstract: A method of video encoding a sequence of pictures, the method being implemented in an encoding device and comprising: obtaining an intra prediction picture comprising at least two sub-units; obtaining a first encoded other picture, wherein the intra prediction picture and the first encoded other picture have the same Picture Order Count, POC, value; obtaining encoded other pictures different from the intra prediction picture and the first encoded other picture; and distributing the at least two sub-units of the intra prediction picture over one or more sub-units of the encoded other pictures and/or over one or more sub-units of the first encoded other picture.

Abstract: Disclosed herein is an image encoding/decoding method. The image decoding method includes a step of comparing block vector information included in a history-based candidate list with a block vector of a neighboring block used as an intra block copy (IBC) block vector candidate for IBC prediction of a current block, and a step of adding the block vector information included in the history-based candidate list to an IBC block vector candidate list based on the comparing. The step of comparing is performed only with respect to a candidate lastly included in the history-based candidate list.

Abstract: Reference picture management scheme is provided in the context of video coding. A method of decoding an encoded video sequence, comprising obtaining a value of a reference picture list (RPL) syntax element from a bitstream of the encoded video sequence, the RPL syntax element specifying whether syntax elements related to reference picture lists are present in the bitstream, when the RPL syntax element specifies that the syntax elements related to the reference picture lists are present in the bitstream, obtaining, from the bitstream, values of the syntax elements related to the reference picture lists; and constructing at least one reference picture list for inter prediction using the obtained values of the syntax elements related to the reference picture lists.

Abstract: This disclosure relates to video coding and more particularly to techniques for performing deblocking of reconstructed video data. According to an aspect of an invention, reconstructed video data having a 4:2:2 chroma format is received and for a four line decision segment corresponding to a vertical deblocking boundary for a chroma component of the video data, a gradient value is computed using samples included in the first and fourth lines.

Abstract: Techniques are described to perform point cloud data processing. An example method of point cloud data processing includes determining one or more spatial region descriptors that describe one or more three-dimensional (3D) spatial regions of a point cloud data and one or more preselection elements that describe point cloud components associated with the point cloud data, and transmitting a media presentation description (MPD) file that includes the one or more spatial region descriptors and the one or more preselection elements.

Abstract: Disclosed herein are an image encoding and decoding method and apparatus for signaling information on a subpicture and picture header, and a method of transmitting a bitstream. The image decoding method according to the present disclosure may include acquiring a first flag specifying whether information on a subpicture is present in a bitstream, acquiring a second flag specifying whether picture header information is present in a slice header, and decoding the bitstream based on the first flag and the second flag. When the first flag specifies that the information on the subpicture is present in the bitstream, the second flag may have a value specifying that the picture header information is not present in the slice header.

Abstract: Embodiments feature families of rate allocation and rate control methods that utilize advanced processing of past and future frame/field picture statistics and are designed to operate with one or more coding passes. At least two method families include: a family of methods for a rate allocation with picture look-ahead; and a family of methods for average bit rate (ABR) control methods. At least two other methods for each method family are described. For the first family of methods, some methods may involve intra rate control. For the second family of methods, some methods may involve high complexity ABR control and/or low complexity ABR control. These and other embodiments can involve any of the following: spatial coding parameter adaptation, coding prediction, complexity processing, complexity estimation, complexity filtering, bit rate considerations, quality considerations, coding parameter allocation, and/or hierarchical prediction structures, among others.

Abstract: A method of filtering reconstructed video data is disclosed. The method comprising: inputting reconstructed luma component sample values; deriving a filtered sample value by using cross component filter coefficients and the reconstructed luma component sample values prior to an adaptive loop filtering process; deriving a refinement value for chroma components by using the filtered sample value; and deriving a refined chroma sample value by using a sum of a sample value of chroma components and the refinement value for chroma components.

Abstract: A video file is detected by a computer system. The video file that is to be provided to one or more client devices. The video file contains a video stream that includes a plurality of video images. A first video image of the plurality of video images is reconstructed based on a first machine learning technique. The first machine learning technique is based on one or more video images that occur temporally before the first video image in the video stream. A reconstruction status of the first video image of the plurality of video images is identified based on the video file and based on a second machine learning technique. An altered video file is generated in response to the reconstruction status and based on the video file.

Abstract: A first projection device includes a first laser projector and a first measurement system. A second projection device includes a second laser projector and a second measurement system. The first projection device and the second projection device is interconnected with a controller. The controller is programmed with computer aided design data representative of a large scale work area and coordinates electronic interaction between the first projection device and the second projection device. The first projection device projects a first indicia that is detectable by the second measurement system and the second projection device projects a second indicia that is detectable by the first measurement system. The controller is adapted for determining relative position within three-dimensional coordinate system of the first projection device to the second projection device from the first indicia detected by the second measurement system and the second indicia detected by the first measurement system.

Abstract: According to the disclosure of the present document, a linear reshaper is used for LMCS and a single chroma residual scaling factor, which is directly signaled during chroma scaling of the LMCS, can be used. In addition, the number of flexible bins can be used for luma mapping so that the resource/cost (of software or hardware) required for an LMCS procedure is minimized, and the latency of coding is removed so that the LMCS procedure can be efficiently performed.

Abstract: A moving image decoding method is provided for decoding encoded data of a tile group generated by splitting a picture into one or more rectangular regions. The tile group includes one or more segments. The moving image decoding method includes decoding a wavefront parallel processing (WPP) enabled flag indicating whether a rectangular tile or a coding tree unit (CTU) row having a height of one CTU exists in a segment in an object tile group; and decoding an end bit of the segment. When the WPP enabled flag is 1, after decoding a CTU at a right end of the CTU row, an end bit of a first segment having a first fixed value is decoded. When the WPP enabled flag is 0, after decoding a CTU at a bottom right of a tile, an end bit of a second segment having a second fixed value is decoded.

Abstract: Four or more bitstream versions of a same content are encoded and divided into segments of independently coded tile sets representing multiple spatial regions. First and second bitstreams include independently coded tile sets encoded at a first quality. Third and fourth bitstreams include independently coded tile sets encoded at a second quality. First and third bitstreams have first random access picture interval. Second and fourth bitstreams have second random access picture interval. Independently coded tile sets are grouped into multiple groups of collocated sub-picture tracks, only one of said tile sets per group is intended to be received and/or decoded per any segment. Instruction(s) are generated for merging tile sets of different spatial locations into coded picture(s), causing a tile set originating from a random access picture to be decoded as a tile set originating from a non-random-access picture when merged with a tile set originating from a non-random-access picture.

Abstract: This disclosure relates to video coding and more particularly to techniques for performing a position-dependent intra prediction sample filtering process. In one example, a method of coding video data comprises: deriving an intra prediction angle parameter, deriving an inverse angle parameter based on the intra prediction angle parameter: for a prediction mode included in a defined set of prediction modes, setting a value of a scale variable based on the derived inverse angle: and performing a position-dependent intra prediction sample filtering process using the value of a scale variable.

Abstract: Systems and methods are provided for generating alignment parameters for processing data associated with a vehicle. In one embodiment, a method includes: receiving image data associated with an environment of the vehicle; receiving lidar data associated with the environment of the vehicle; processing, by a processor, the image data to determine data points associated with at least one pole identified within image data; processing, by the processor, the lidar data to determine data points associated with at least one pole identified within the lidar data; selectively storing the data points as data point pairs in a data buffer; iteratively processing, by the processor, the data point pairs with a plurality of perturbations to determine a transformation matrix; generating, by the processor, alignment data based on the transformation matrix; and processing future data based on the alignment parameters.

Abstract: A vehicular trailer beam estimation system includes a camera disposed at a rear portion of a vehicle equipped with a trailer hitch. With a trailer hitched at the trailer hitch of the vehicle, the camera views at least a portion of the trailer hitched to the vehicle. The system, responsive at least in part to processing by an image processor of image data captured by the camera, determines a trailer angle of the trailer relative to the vehicle. During a driving maneuver, the system tracks trailering parameters, which include (i) the trailer angle, (ii) steering angle of the vehicle and (iii) speed of the vehicle. The system determines beam length of the trailer based at least in part on (i) the trailering parameters, (ii) the vehicle's wheelbase and (iii) hitch length of the trailer hitch of the vehicle.

Abstract: An example device for encoding high dynamic range (HDR) video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: calculate a histogram for an image of the video data, the image being expressed in a linear light format; encode values for the histogram of the image expressed in the linear light format; and encode the image. Data for the histogram may be expressed in an array of variables having a size of 210×18 bits. The device may encode codewords representing values for bins of the histogram, where the codewords may be selected from a set of codewords for a PQ10 format for HDR images. The bins of the histogram may represent non-equal width ranges.

Abstract: A transmission apparatus, a transmission method, and a program that can reduce the number of times that useless transmission of image data is performed due to a failure in reception of image data indicating a reference destination. A transmission failure likelihood data management section checks the likelihood of a failure in transmission of first image data. Second image is an image rendered in a frame buffer for the first time after a timing when a predetermined time has elapsed since the transmission of the first image data. An encoding processing section controls whether or not to generate second image data requiring no reference destination, depending on the likelihood of the failure in the transmission of the first image data at a timing of encoding the second image.

Abstract: According to the disclosure of the present document, for LMCS, a linear reshaper may be used, LMCS codewords (or ranges thereof) may be restricted, and in the chroma scaling of the LMCS, a single chroma residual scaling factor may be used. Accordingly, the resources/cost (of software or hardware) necessary for an LMCS procedure may be minimized, and latency in coding may be eliminated, thus enabling the LMCS procedure to be efficiently performed.