Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.

Abstract: The present invention relates to an image encoding/decoding method and device, and the image encoding method or device according to an embodiment of the present invention may encode a position of a reference coefficient within a current transform block to be encoded, and encoding skip region information of a skip region selected on the basis of the position of the reference coefficient. The skip region information may represent whether or not coefficients within the skip region have an identical coefficient value.

Abstract: A method for decoding/encoding an image signal with the decoding/encoding apparatus according to the present invention may comprise the steps of obtaining a first prediction sample of a current block by performing inter prediction on the current block, determining one or more weight prediction parameter candidates for the current block, determining a weight prediction parameter of the current block from the one or more weight prediction parameter candidates, and obtaining a second prediction sample of the current block by applying the weight prediction parameter to the first prediction sample. Herein, a number of the one or more weight prediction parameter candidates is variably determined based on a size of the current block.

Abstract: Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.

Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.

Abstract: Disclosed herein are a method and apparatus for managing log information in a machine-to-machine (M2M) system, and a method for operating an M2M device in an M2M system may include receiving a first message for requesting to create a log management rule, creating storage for storing the log management rule and log information to be generated according to the log management rule, and setting a reference relationship between the log management rule and the storage.

Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.

Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.

Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.

Abstract: There are provided a multi-chip based ray tracing device and a method using frame partitioning. The multi-chip based ray tracing device includes a system memory storing geometry data and an acceleration structure (AS) for scene generation; a plurality of ray tracing cores performing independent ray tracing for individual frames based on the geometry data and the acceleration structure; and a central processing unit executing and managing a ray tracing application and a scene manager and delivering the geometry data and the acceleration structure to the plurality of ray tracing cores.

Abstract: A method for decoding an image signal according to the present invention may comprise the steps of: determining whether there is a brightness change between a current image including a current block and a reference image of the current image; if it is determined that there is a brightness change between the current image and the reference image, determining weight prediction parameter candidates for the current block; determining a weight prediction parameter for the current block on the basis of index information which specifies any one of the weight prediction parameter candidates; and performing a prediction on the current block on the basis of the weight prediction parameter.

Abstract: A subscription service including a number of subscriptions possessed by a device is managed in a machine-to-machine (M2M) system. A method for operating a first device may include: transmitting, to a second device, a first message for requesting a new subscription that uses a first resource for managing subscription; receiving, from the second device, a second message for notifying an update of a second resource associated with the new subscription; and identifying a content of the second resource, wherein the first resource may include at least one of a first attribute indicating a number of subscriptions possessed by the first device, a second attribute indicating, among resources to which the first device is subscribing, a number of resources which are updated but not yet retrieved, or a third attribute indicating an access address of a subscribed resource.

Abstract: There is provided a ray tracing device with improved performance. The ray tracing device includes a tree build unit (TBU) building a spatial partitioning structure; a ray tracing unit (RTU) performing ray tracing based on the spatial partitioning structure; and a controller controlling the balance between operating performances of the tree build unit and the ray tracing unit adaptively by monitoring load conditions of the corresponding units.

Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.

Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise acquiring transform coefficients distribution information of a neighboring block from a bitstream; direction-adaptively determining an intra prediction mode of a current block to be decoded, according to the transform coefficients distribution information of the neighboring block; and reconstructing the current block, based on the determined intra prediction mode, wherein the direction-adaptively determining includes determining similarity flag information corresponding to the neighboring block, based on the transform coefficients distribution information of the neighboring block.

Abstract: The present invention relates to a method and apparatus for encoding and decoding a video image based on transform. The method for decoding a video includes: determining a transform mode of a current block; inverse-transforming residual data of the current block according to the transform mode of the current block; and rearranging the inverse-transformed residual data of the current block according to the transform mode of the current block, wherein the transform mode includes at least one of SDST (Shuffling Discrete Sine Transform), SDCT (Shuffling Discrete cosine Transform), DST (Discrete Sine Transform) or DCT (Discrete Cosine Transform).

Abstract: Disclosed herein are an image encoding method and an image decoding method. The image decoding method of the present disclosure may include reconstructing reference pixel line information, selecting, based on the reference pixel line information, at least one reference pixel line among a plurality of reference pixel lines, and generating a prediction block for a current block by performing intra prediction for the current block based on the selected reference pixel line.

Abstract: Disclosed are a cathode material for a lithium secondary battery and a method of manufacturing the same. For instance, the lithium secondary battery may have a high energy density by using only a single cathode material. Particularly, the cathode material for a lithium secondary battery includes a Li—[Mn—Ti]—Al—O-based cathode active material; and a carbon nanotube (CNT) attached to the surface of the cathode active material in an acid-treated state to be formed as a composite.