Abstract: An image coding method and apparatus and an image decoding method and apparatus are provided by the present invention. The image coding method includes: implementing matching coding for pixels of an input video image to obtain one or more matching relationship parameters, herein the matching relationship parameters are parameters used in a process of constructing predicted values and/or reconstructed values of the pixels in the image; mapping the matching relationship parameters to obtain mapped values of the matching relationship parameters; and performing entropy coding on the mapped values of the matching relationship parameters. The present invention addresses the problem existing in the conventional art which is caused by the direct implementation of entropy coding for matching relationship parameters and achieves a good data compression effect through entropy coding.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding and decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry decodes prediction information of a current block in a current picture from a coded video bitstream. The prediction information indicates an inter prediction mode for reconstructing the current block. The processing circuitry identifies a reference block for the current block where the reference block is one of a plurality of blocks in a motion vector compression unit (MVCU) that is already reconstructed. The processing circuitry further determines current motion information of the current block based on representative motion information for the MVCU and reconstructs at least one sample in the current block based on the current motion information.

Abstract: The quantization parameters (QP) for Chroma are extended up to and more preferably to the same range as Luma QP (e.g., 0 to 51). Previous, values of Chroma QP only extended up to 39. Techniques are provided for determining extended Chroma QP values (e.g., for Cr and Cb) based on the Luma QP and picture level chroma offsets. In one preferred embodiment, slice level offsets are added making the method particularly well-suited for slice level parallel processing. The extension of Chroma QP enhances functionality, flexibility and friendliness of the High Efficiency Video Coding (HEVC) standard for various applications.

Abstract: A video encoding method includes obtaining a current frame of a video input; dividing the obtained current frame into a plurality of blocks; obtaining a residual block for each of the plurality of blocks; performing scan region based coefficient coding (SRCC) to the residual block, wherein a size of a scan region of a current block is predicted based on the sizes of the scan regions of previously coded blocks, such that coding efficiency and compression performance are improved; and coding the current frame to generate a bitstream including the coded residual block for each of the plurality of blocks of the current frame.

Abstract: A system comprises an encoder configured to compress video data. The encoder includes an adaptive bilateral filter that uses look-up tables. The encoder may encode one or more adaptive adjustment factors to be used by a decoder to select or adjust look-up tables used to decode the compressed video data.

Abstract: Devices and methods of intra prediction of a block of a picture are provided. In various embodiments, information indicating an Intra Sub-Partitions (ISP) split type can be obtained. A value of a filter flag can be set based on the ISP split type. For instance, the value of the filter flag can be set to 0 when the ISP split type does not indicate not to split a current block. A set of coefficients of an interpolation filter can then be selected according to the value of the filter flag. For instance, fG coefficients or fC coefficients can be selected based on the value of the filter flag. Still in those embodiment, the selected set of coefficients can be applied to reference samples. In some embodiments, the method removes mode dependency during selection of interpolation filter type. This could increase encoding or decoding efficiency.

Abstract: Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, calculates a correlation between a Luma area block and Chroma area block in the input image in intra prediction, removes high frequency ingredients by low-pass filtering an encoded luma pixel based on the calculated correlation, and generates a prediction block by applying an LM chroma mode, which is an extended chroma mode technique, to the luma pixel removed therefrom the high frequency ingredients.

Abstract: Provided is a control device, an endoscope system, a processing method, and a program which can select a region other than the center region in an image to perform a predetermined process. An endoscope system includes an image generation unit which processes an image signal generated by an imaging unit to generate a display image to be displayed, a display controller which overlaps a plurality of select regions selectable according to an external operation to the display image and outputs the overlapped image to the display device, and an autofocus controller which performs a predetermined process on at least one select region selected according to the external operation.

Abstract: A microscope and method for high resolution scanning microscopy of a sample, having an illumination device, an imaging device for the purpose of scanning at least one point or linear spot across the sample and of imaging the point or linear spot into a diffraction-limited, static single image below a reproduction scale in a detection plane. A detector device is used for detecting the single image in the detection plane for various scan positions, with a location accuracy which, taking into account the reproduction scale in at least one dimension/measurement, is at least twice as high as a full width at half maximum of the diffraction-limited single image.

Abstract: Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. Prediction information for a current block in a current picture that is a part of a coded video sequence is decoded. The prediction information indicates an intra sub-partition (ISP) mode for the current block. The ISP mode indicates that the current block is to be partitioned in one of a vertical mode and a horizontal mode. The current block is partitioned into a plurality of sub-partitions based on the ISP mode. Each sub-partition is associated with at least one different reference sample that is in one of (1) a row above the current block and (2) a column left to the current block. Each sub-partition is reconstructed based on the at least one different reference sample associated with the respective sub-partition. The current block is reconstructed based on the reconstructed plurality of sub-partitions.

Abstract: Techniques are described to unify the motion vectors of sub-blocks of an affine block and the motion vector information that is stored and used as predictors for determining motion vectors for subsequent blocks. A video coder may determine that the motion vector for a sub-block is the same as the motion vector information that is used to determine motion vectors for subsequent blocks.

Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.

Abstract: An image processing method for an image, a data transmission method, an image processing device for an image, a data transmission device, and a storage medium are disclosed. The image is a binarized image, and the binarized image includes a plurality of pixels, among the plurality of pixels, pixels having a first value are first pixels, and pixels having a second value are second pixels, and the image processing method includes: dividing the image to determine N rectangular regions, which include only the first pixels, of the image; and obtaining start coordinates and end coordinates of the N rectangular regions, respectively, thereby obtaining compressed data after compressing the image. N is an integer greater than or equal to 1. The image processing method can improve the compression rate of the image.

Abstract: An example device includes a memory and processing circuitry in communication with the memory. The processing circuitry of a device is configured to form a most probable mode (MPM) candidate list for a chroma block of the video data stored to the memory, such that the MPM candidate list includes one or more derived modes (DMs) associated with a luma block of the video data associated with the chroma block, and a plurality of luma prediction modes that can be used for coding luminance components of the video data. The processing circuitry is further configured to select a mode from the MPM candidate list, and to code the chroma block according to the mode selected from the MPM candidate list.

Abstract: The present disclosure pertains to a method for 3D or multi-viewer projection of images. The method switches back and forth between left and right eye or multi-viewer data at single bit segment or multiple bit segment rates in a single projected image to create high quality 3D stereo or multi-viewer imaging with no motion artifacts.

Abstract: A decoder includes circuitry configured to receive a bitstream, partition a current block via a geometric partitioning mode into three portions, determine a motion vector associated with a portion of the three portions, wherein determining further includes constructing a candidate list, and decode the current block using the determined motion vector.

Abstract: A method by which a decoding device decodes an image includes the steps of: receiving a bitstream including residual information; deriving a residual sample for the current block on the basis of a quantized transform coefficient; and generating a reconstructed picture on the basis of the residual sample for the current block, where the residual information includes a context-based coded context syntax element, where the deriving the quantized transform coefficient decodes the context syntax element based on a context and based on a predetermined maximum value for the context syntax element, and where the maximum value is determined by a unit of a transform block.

Abstract: An image capturing control apparatus including an acquisition unit configured to acquire information about a zoom magnification, a combining unit configured to combine a plurality of images acquired by a series of image capturing operations to generate a combined image wider in angle of view than each acquired image, and a control unit configured to perform control to display, before starting of the series of image capturing operations, an item indicating an angle of view of a combined image which is able to be generated by the combining unit, based on the acquired information.

Abstract: A video encoding method includes deriving entry point information specifying an entry point of a substream for a picture. The entry point information may include a number syntax element representing a number of offset syntax elements in a slice header; an offset syntax element representing an entry point offset between in bytes two entry points; and a length syntax element representing a bits length of the offset syntax element. A value of the length syntax element plus one corresponds to the bits length of the offset syntax element and the length syntax element is signaled when the number of the offset syntax elements is larger than 0. A value of the number syntax element corresponds to the number of offset syntax elements in the slice header, and the offset syntax element is signaled when the number of the offset syntax elements is larger than 0.

Abstract: A video encoding method includes a step of encoding substreams which are rows of largest coding units (LCUs) in parallel with each other; and a step of transmitting a bit stream including the encoded substreams. the substreams are substreams for wavefront parallel processing (WPP).