Abstract: A method of video coding, wherein the method comprises inter-prediction processing of a first block, wherein the inter-prediction processing comprises subpixel interpolation filtering of samples of a reference block; intra-prediction processing of a second block, wherein the intra-prediction processing comprises subpixel interpolation filtering of reference samples; wherein the method further comprises selecting interpolation filter coefficients for the subpixel interpolation filtering based on a subpixel offset between integer reference sample positions and fractional reference samples' positions, wherein for the same subpixel offsets the same interpolation filter coefficients are selected for intra-prediction processing and inter-prediction processing.

Abstract: At least a method and an apparatus are provided for efficiently encoding or decoding a video frame to smooth out or reduce visual distortions such as mosquito noise between different video subsections encoded with different compression methods within a video frame. For example, a plurality of surrounding neighboring video subsections of the video frame are compressed using a first compression method (e.g., inter coding), with an associated first compression parameter set. The center video subsection of the video frame is twice compressed, first with the same first compression method, then with a different, second compression method (e.g., intra coding). Therefore, the mosquito noise or visual artifact is reduced between the video subsections encoded with the different compression methods.

Abstract: Disclosed is an image decoding method using the correlation between color components to perform into prediction of chrominance components. Here, the image decoding method using the correlation between color components to perform intra prediction of chrominance components comprises the steps of: checking image data and a prediction mode in a bitstream; generating a prediction block according to a reconstructed prediction mode; determining compensation settings according to the size of a current block and the reconstructed prediction mode; compensating the prediction block according to the determined compensation settings; and reconstructing the current block by adding reconstructed image data to the prediction block.

Abstract: At least one of the present embodiments generally relates to a method and an apparatus for video encoding and decoding, and more particularly, to a method and an apparatus for low-complexity bi-directional intra prediction. For example, a subset of a plurality of directional intra prediction modes is selected based on a shape of a current block of a picture being encoded or decoded. For a selected intra prediction mode in this subset, a sample value is bi-directionally intra predicted by using two predictors. The two predictors are substantially on a line based on a direction corresponding to the selected directional intra prediction mode. The bi-directional intra prediction may be only applied to large luma blocks, but not chroma blocks in order to reduce the computational complexity. When bi-directional intra prediction is used, the smoothing filtering may be omitted in intra prediction to further reduce the complexity.

Abstract: Provided are projectors, each including a light source configured to emit laser light, a substrate spaced apart from the light source, a pattern mask including a pattern disposed on a first surface of the substrate, the first surface facing the light source, and a meta-lens including a plurality of first nanostructures formed on a second surface of the substrate, the second surface opposite the first surface, the nanostructures having a dimension of a sub-wavelength that is less than a wavelength of light emitted from the light source.

Abstract: A method for encoding a picture of a video sequence in a bit stream that constrains tile processing overhead is provided. The method includes computing a maximum tile rate for the video sequence, computing a maximum number of tiles for the picture based on the maximum tile rate, and encoding the picture wherein a number of tiles used to encode the picture is enforced to be no more than the maximum number of tiles.

Abstract: An alternative design is presented and analyzed for providing a just in time video such that even though multiple variants are advertised to a client, the bit streams need not be present. Instead, the videos are generated just in time when a client requests them. At a given time instant, only that video stream is generated which corresponds to the bit rate requested by the client and streams with other bit rates advertised in the manifest file are not generated. This saves storage cost and/or lowers the numbers of transcoders needed to generate full manifest file all the time. Two different architectures are presented and analyzed. Analysis of impacts of the encoding/transcoding speed on the behavior of such a system is presented and used in designing an optimal solution based on desired price and performance points.

Abstract: The multi sample prediction method of the present invention comprises the steps of: determining a sample group consisting of a plurality of samples inside a decoding target block; determining a representative position corresponding to the sample group, inside the decoding target block; determining a representative prediction value for the sample group, on the basis of the determined representative position; and determining the determined representative prediction value as the final prediction value for each of the plurality of samples making up the sample group. The present invention enhances efficiency in encoding/decoding and reduces complexity thereof.

Abstract: Systems and methods for implementing temporal filtering are provided. A method includes: applying a temporal filter to a current picture and encoding the current picture after the temporal filter is applied. The applying includes obtaining an exponential function, that includes an exponent with a numerator with at least one first factor and a denominator with at least one second factor, by computing the exponent of the exponential function as fixed-point values or by using at least one lookup table; obtaining a weight of at least one neighboring picture by multiplying a scaling function with the exponential function; obtaining a filtered sample value of the current picture based on a sample value of the current picture and the weight of the at least one neighboring picture; and replacing the sample value of the current picture with the filtered sample value.

Abstract: An imaging condition set in a first region of a three-dimensional model of a subject and an imaging condition set in a second region of the three-dimensional model are different from each other. A processor of an observation device determines whether or not the imaging condition that has been set in the first region or the second region including a position on the three-dimensional model is satisfied. The position is identified on the basis of a position of an imaging device and a posture of the imaging device. The processor displays observation information on a display on the basis of a result of determination. The observation information represents whether or not the first region or the second region including the position on the three-dimensional model has been observed.

Abstract: Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

Abstract: An image capturing device, image capturing system, and image processing method, each of which: obtains a video image of an object; converts a wide-angle video image to generate a low-definition, wide-angle image; applies projection transformation to a part of the wide-angle video image to generate a high-definition, narrow-angle video image in different projection; combines each frame of the low-definition, wide-angle video image and a corresponding frame of the high-definition, narrow-angle video image, into one frame data while reducing a resolution of each video image, to generate a combined video image; transmits the combined video image for display at a communication terminal; in response to a request from the communication terminal, applies projection transformation to a part of a frame of the wide-angle video image to generate an ultra-high-definition, narrow-angle still image in different projection; and transmits the ultra-high-definition, narrow-angle still image for display at the communication ter

Abstract: There is disclosed a deployable surveillance, security and/or enforcement unit, comprising: a container configured for deployment from a vehicle or by air at a surveillance, security and/or enforcement location; and two or more removable modules having equipment for performing surveillance, security and/or enforcement operations, wherein the container has a housing with at least one opening for receiving the two or more modules into the container. The unit may be comprised as part of a vehicle. The advantage of this arrangement is that it is flexible and can be deployed to meet temporary requirements, changing requirements, and can be easily equipped to meet differing roles. The deployable surveillance, security and/or enforcement unit may comprise removable modules including: a command module; a reconnaissance module; a sampling and diagnostic laboratory module; a decontamination module; and/or a utilities module.

Abstract: In one embodiment, a method comprising receiving at a single encoding engine an input video stream according to a first version of a video characteristics, such as frame rate, profile and level, and coding standard, and generating by the single encoding engine, in parallel, a plurality of streams comprising a first encoded stream according to a first version of the video characteristic and a second encoded stream according to a second version of the video characteristic, the second encoded stream generated based on video coding information used to generate the first encoded stream.

Abstract: The disclosure describes generating a prediction block for matrix intra prediction (MIP) tool. A video coder (e.g., video encode or video decoder) may generate intra prediction samples based on reference samples, where the intra prediction samples are a subsampled set of samples of the prediction block. The video coder may clip the intra prediction samples, and after clipping the intra prediction samples, generate one or more remaining samples of the prediction block.

Abstract: Systems, apparatuses, and methods for reducing latency when consuming an encoded video bitstream in real-time are disclosed. A video encoder encodes a video bitstream and writes chunks of the encoded bitstream to a bitstream buffer. Prior to the encoder completing the encoding of an entire frame, or an entire slice of a frame, a consumer module consumes encoded chunks of the bitstream. In one implementation, to enable pipelining of the consumption with the encoding, the encoder updates a buffer write pointer with an indication of the amount of data that has been written to the bitstream buffer. The consumer module retrieves encoded data from the bitstream buffer up to the location indicated by the buffer write pointer. In this way, the consumer module is able to access and consume encoded video data prior to the encoder finishing encoding an entire frame or an entire slice of the frame.

Abstract: Disclosed is a deblocking filter level decision method applicable to an image encoder and used for determining deblocking filter levels of N image frames. The method includes: determining whether a current quantization parameter of a current frame of the N image frames is the same as a previous quantization parameter of any previous frame of the N image frames; if the current quantization parameter is different from the previous quantization parameter, looking up M current deblocking filter reference levels in an established table according to the current quantization parameter and then determining M current deblocking filter levels of the current frame according to the M current deblocking filter reference levels, respectively; and if the current quantization parameter is the same as the previous quantization parameter, determining the M current deblocking filter levels of the current frame according to M previous deblocking filter levels of the previous frame, respectively.

Abstract: An encoder which encodes a video including a plurality of pictures includes circuitry and memory. Using the memory, the circuitry performs: encoding a first picture among the plurality of pictures; and performing (i) a first operation for encoding a parameter set for a second picture which follows the first picture in coding order among the plurality of pictures after encoding the first picture, and encoding the second picture after encoding the parameter set, or (ii) a second operation for encoding the second picture without encoding the parameter set after encoding the first picture. The circuitry performs the first operation when the second picture is a determined picture, in the performing of the first operation or the second operation.

Abstract: A decoding method includes: parsing a data stream, and if partitioning an image block with a size of 2N×2N using a quadtree partition pattern is allowed, processing a 2N×N first subimage block and a 2N×N second subimage block or an N×2N first subimage block and an N×2N second subimage block in a constraint subimage processing mode, wherein an image block partition pattern obtained for the partitioned second subimage block and the partitioned first subimage block is different from an image block partition pattern obtained after the 2N×2N image block is partitioned using the quadtree partition pattern, where the 2N×N first subimage block and the 2N×N second subimage block or the N×2N first subimage block and the N×2N second subimage block are obtained by partitioning the image block with the size of 2N×2N.

Abstract: A first encoder divides an encoding target image included in a video into a plurality of blocks, and encodes each of the plurality of blocks by performing a prediction coding by use of filtering processing. A second encoder encodes a parameter that represents a direction of a line of pixels in the filtering processing. Here, when an encoding target block that is one of the plurality of blocks has a rectangular shape, the second encoder changes, according to a direction of a long side of the rectangular shape, a process of encoding the parameter.